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HP 8642A, Operating Manual

The HP 8642A is a versatile and reliable device that meets all your electrical testing needs. With our user-friendly manual, you can effortlessly operate and optimize this equipment for maximum performance. Download the free manual from our website for detailed instructions and unleash the full potential of your HP 8642A.

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Summary of Contents for 8642A

Page 1: ...apply to your instrument rev 30APR86 For additional important information about serial numbers refer to INSTRUMENTS COVERED BY THIS MANUAL in Section I HEWLETT PACKARD COMPANY 1985 EAST 24001 MISSION AVENUE TAF C 34 SPOKANE WASHINGTON U S A 99220 Operation Calibration Manual Part Number 08642 90224 Service Manual 08642 90226 Microfiche Operating and Service Manual Part Number 08642 90109 Printed A...

Page 2: ...akes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Agilent Technologies Inc is not liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material or data ...

Page 3: ...hat its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument HP does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance b...

Page 4: ...result in dam age to or destruction of part or all of the product Do not proceed beyond a CAUTION sign until the indi cated conditions are fully understood and met Any interruption of the protective ground ing conductor inside or outside the instru ment or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury Ground ing one conductor o...

Page 5: ... 5 Mating Connectors 2 5 Operating Environment 2 5 Rack Mounting 2 5 Storage and Shipment 2 6 Environment 2 6 Packaging 2 6 Section III OPERATION Introduction to Section III 3 1 Operating Information 3 3 HP IB Table of Contents 3 5 HP IB Remote Operation 3 7 HP IB Address 3 8 HP IB Capabilities 3 9 Data Input 3 11 Data Output 3 15 Clear 3 24 Remote Local 3 25 Local Lockout Set Local 3 26 Service R...

Page 6: ... Internal Modulation Oscillator Tests 4 27 SWR 4 30 Spurious Test 4 35 Third Order Intermodulation 4 37 SSB Phase Noise Test 4 39 SSB Phase Noise Test Optional 4 42 Extended Pulse Tests 4 46 Optional Residual FM Test 4 49 Internal Time Base Aging Rate Test 4 51 SECTION 5 ADJUSTMENTS Adjustments 5 2 Auto Adjust Routines 5 2 Description 5 2 How All Auto Adjust Procedures Begin 5 3 Correction Data Sp...

Page 7: ...mportant information about serial numbers refer to INSTRUMENTS COVERED BY THIS MANUAL in Section I HEWLETT RACKARD COMPANY 1985 EAST 24001 MISSION AVENUE TAF C 34 SPOKANE WASHINGTON U S A 99220 Operation Calibration Manual Part No 08642 90224 Other Documents Available Microfiche Operation Calibration Manual Part Number Volume 1 08642 90225 Service Manual Part Number Volume 2 3 4 08642 90226 Microf...

Page 8: ...nd detailed operating information for either the beginning or experienced user A glossary and index are provided at the end of Section III Volumes II Through IV Service Manual Section IV Performance Tests Performance Tests enable you to check the performance of the instrument against the specifications listed in Table 1 1 Section V Adjustments The adjustment procedures that are normally found in t...

Page 9: ...andard 48 8 and the identical ANSI Standard MC1 1 Refer to the HP IB portion of Section III for more complete details Selecting the HP IB Address The Signal Generator s HP IB address is set to 19 at the factory in both internal memory and an internal switch located inside the instrument The decimal equivalent of the 5 bit address code can be displayed on and changed from the front panel Refer to H...

Page 10: ...d top view of the inside of the instrument as well as a table of cable connections Built in Test Features A voltmeter and a power meter are built into the instrument Unique service tools are stored inside the HP 8642A B cabinet Firmware Features All RF modules are connected to a diagnostic bus which allows the controller to monitor critical operating test points within the module Critical message ...

Page 11: ...luding band 10 Mechanical Options Option 907 Front Handle Kit Front handles are provided when Option 907 is ordered Order a Front Handle Kit as HP part number 5061 0089 Option 908 Rack Flange Kit Rack flanges are provided for the Signal Generator when Option 908 is ordered When rack mounting the Signal Generator ensure the instrument is supported properly by using the system cabinet s support rail...

Page 12: ...ge 1 17 for a com plete parts listing of the On Site Service Kit Although two part numbers are listed for modules in the On Site Service Kit only the new or the restored module will be included in the kit Bench Service Kit This kit in conjunction with the HP 8642A B Service Manual is directed at component level repair and module calibration of the HP 8642A B The kit contains special tools and trou...

Page 13: ... serial prefix es as those listed at the beginning of Volume I Manual Updates An instrument manufactured after the printing of this manual may have a serial prefix that is not listed at the beginning of Volume I An unlisted serial prefix number indicates that the instrument differs in some way from those documented in this manual A MANUAL UPDATES packet is shipped with the manual when necessary to...

Page 14: ...00 MHz 1 Hz 0 1 Hz with Special Function 240 or 241 Same as reference oscillator See Supplemental Characteristics 109 day SSB Phase SSB Phase Noise 20 kHz Noise Floor offset from 200 kHz offset carrier from carrier 125 dBc Hz 134 dBc Hz 134 dBc Hz 143 dBc Hz 137 dBc Hz 144 dBc Hz 141 dBc Hz 144 dBc Hz 144 dBc Hz 145 dBc Hz 145 dBc Hz 145 dBc Hz 146 dBc Hz 147 dBc Hz 147 dBc Hz 148 dBc Hz 148 dBc H...

Page 15: ...c3 94 dBc From Maximum Level Available to 140 dBm 0 023 teV into 50 ohms 20 dBm 2 24V 19 dBm 2 00V 18 dBm 1 78V 17 dBm 1 59V 16 dBm 1 41V 0 1 dB 1 dB 0 75 dB 50 ohms nominal 1 5 1 2 0 1 50W 25 Vdc 8642A 25W 50 Vdc 8642B 50 dBc at 10 dBm Typically decreases 10 dB for every 5 dB of combined level decrease dBm V mV vM dB V EMFV EMF mV EMF V dB EMF MV REL ZERO or REF SET can be used to obtain settings...

Page 16: ...r of 3 MHz or f X 2160 1 5 MHz or f X 1080 750 kHz or f X 540 375 kHz or f X 270 187 5 kHz or f X 1358 93 75 kHz or fmod X 67 58 46 875 kHz or f X 33 758 23 437 kHz or f X 16 8756 11 718 kHz or f X 8 43756 93 75 kHz or f X 67 58 1 5 MHz or X 1080 0 7 of setting or 0 0004 of maximum deviation whichever is larger 5 of setting 10 Hz 4 2 0 4 dc to 200 kHz 20 Hz to 200 kHz 20 Hz to 100 kHz shown for th...

Page 17: ...5625 radians7 0 78125 radians7 6 25 radians7 100 radians 0 7 of setting or 0 0004 of maximum deviation whichever is larger 5 of setting 0 09 radians 0 4 20 Hz to 15 kHz dc to 15 kHz 2509A to 2550A 30dB 45 dB 3 5 MS 50 kHz 6 MS 1 5V 2551A and above 40dB 80dB 400 ns 100 kHz 2 MS 1 5V 20 Hz to 100 kHz 1 of setting 2 of setting 0 to 3 3 Vpk 4mV 0 02 0 15 4 15 mV 600 ohms 10 Conditions 20 kHz peak devi...

Page 18: ...ithin the standards set by FTZ 1115 Also RF leakage of 0 5 V is in duced in a two turn loop 2 5 cm in diameter held 2 5 cm away from any surface for output levels 0dBm Features Sweeps between two selected end points in a linear step wise manner End points can be anywhere within the frequency range of the instrument In AUTO sweep mode sweep must stay within the range of bands 2 through 9 or band 1 ...

Page 19: ...also dependent on end point separation and fre quency band selected 0 to 10 Vdc 10 TTL positive true for crt display blanking during retrace Hewlett Packard Interface Bus HP IB HP IB is Hewlett Packard s imple mentation of IEEE Standard 488 1978 All functions controlled from the front panel with the exception of the power switch and the knob are programmable with the same accuracy and resolution a...

Page 20: ...sources Mixed Modulation Types Any two modulation types can be simultaneously selected except for FM M and AM pulse modulation FREQUENCY MODULATION Carrier Stability in FM Mode AC FM Same as CW DC FM 4 kHz hour 8642A B bands 1 9 HET 8 kHz hour 8642B band 10 FM Stereo Separation Ext de Coupled HET Band Special Function 8 50 dB 1 kHz rate 75 kHz deviation Low Distortion FM M Special Function 5 or 11...

Page 21: ...pplications INTERNAL REFERENCE OSCILLATOR EXTERNAL REFERENCE Characteristic Aging rate Temperature Line voltage Standard 2 ppm year 4 ppm 0 to 55 C 0 1 ppm 5 1 0 High Stability opt 001 See Table 1 1 7 X 10 9 0 to 55 C 3 X 10 9 5 1 0 Output rear panel Frequency 10 MHz Level 1 4 Vp p into 50 ohms Impedance 75 ohms Input rear panel Frequency 1 2 5 or 10 MHz 25 ppm Level 0 5 Vp p Impedance 500 ohms 1 ...

Page 22: ...ency Range 2 5 MHz to 1300 MHz Power Range 0 dBm to 127 dBm Accuracy 0 5 dB Frequency Resolution 10 Hz Audio Distortion Typical Residual 60 dB Frequency 0 2 to 500 MHz Type Double Balanced Frequency 500 to 2115 MHz Type Double Balanced Vertical Sensitivity 10 mV division Bandwidth 100 MHz Required for servicing and troubleshooting See Table 1 5 for parts listing and description Frequency 1 to 2115...

Page 23: ...r _ Q o UTPUT _ fl500pF i 3 3 0 T1 6 0 PF T1 5 0 PF Figure 1 1 1 MHz Low Pass Filter Table 1 4 Alternative Test Equipment Instrument Digital Voltmeter DVM Signal Generator Oscilloscope Feedthrough Termina tion BNC Recommended Model HP 3456A HP 8642B HP 1980B HP 19860A HP 11095A Suggested Alternative HP 3455A HP 8340A HP 8341A HP 8663A HP 8662A HP 1740A HP 0757 1100 Advantage of Alternative Satisfi...

Page 24: ...Loop Module SAWR Loop Module Restored IF Loop Module IF Loop Module Restored Reference Loop Module Reference Loop Module Restored Sum Loop Divider Module Sum Loop Divider Module Restored Output Filters ALC Module Output Filters ALC Module Restored Heterodyne Module Heterodyne Module Restored Attenuator Module 8642A Only Attenuator Module Restored 8642A Only Power Supply Regulators Attenuator Drive...

Page 25: ...0 Description Case Large Case Small Connector Ribbon Cable 34 Pin Connector Ribbon Cable 26 Pin Connector Ribbon Cable 16 Pin Connector Ribbon Cable 14 Pin Extender Post Foam Top and Bottom for large case Foam Top and Bottom for small case Fuse Puller Grounding Strap Anti Static Lamp Incand 5 Vdc 115 mA T 1 Bulb On Site Service Manual Storage Box Plastic 1 Compartment Storage Box Plastic 10 Compar...

Page 26: ...ption 8 1 6 4 7 4 9 8 2 1 6 8 5 4 7 2 1 3 7 8 2 6 5 0 5 5 9 4 6 7 5 1 2 1 7 3 4 Adapter Coax STR Female BNC to Female SMC Adapter Coax STR Male SMC to Male SMC Adapter SMA to BNC Adapter Tee Female Male Male SMC Alignment Tool Screwdriver 08 Alignment Tool Screwdriver 075 Alignment Tool Square 030 Bit Torx T10 Bit TorxT15 Bit Torx T5 Board Assembly Latch Extender Board Assembly Processor Extender ...

Page 27: ...nts of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically Procedures for checking electrical performance are given in Section IV Performance Tests If the contents are incomplete if there is mechanical damage or defect or if the instrument does not pass the electrical performance test notify the nearest Hewlett Packard office If the shi...

Page 28: ...on from 100 120 220 or 240 Vac The number visible in the window located on the module indicates the nominal line voltage to which the instrument must be connected Verify that the line voltage selection card and the fuse are matched to the power source Refer to Figure 2 1 Line Voltage and Fuse Selection Two fuses are supplied with each instrument One fuse has the proper rating for 110 120 Vac line ...

Page 29: ...earth terminal of the instrument must be connected to the protective conductor of the mains power cord The mains plug shall only be inserted in a socket outlet provided with a protective earth contact The protective action must not be negated by the use of an extension cord power cable without a protective conductor grounding Grounding one conductor of a two conductor outlet is not sufficient prot...

Page 30: ...ed in many nations 125V 8120 8120 8120 8120 8120 8120 1378 1398 1754 1378 1521 1676 Straight NEMA5 15P 90 Straight NEMA5 15P Straight NEMA5 15P 90 Straight NEMA5 15P 80 80 36 80 80 36 Black Black Black Jade Gray Jade Gray Jade Gray United States Canada Japan 100V or 200V Mexico Phillipines Taiwan 250V zT 8120 2104 Straight SEV1011 1959 24507 Type 12 79 Gray Switzerland 250V 8120 0698 Straight NEMA...

Page 31: ...ector is shown in Figure 2 2 Note that the two securing screws are metric Coaxial Connectors Coaxial mating connectors used with the Signal Generator should be either the 50 ohm BNC male connectors or 50 ohm Type N male connectors that are compatible with those specified in US MIL C 39012 Operating Environment The operating environment should be within the following limitations Temperature 0 C to ...

Page 32: ...to 7 5 C Humidity 5 to 95 maximum wet bulb temperature 40 C Altitude 1 5 300 meters 50 000 feet Packaging Original Packaging Containers and materials identical to those used in factory packaging are available through Hewlett Packard offices If the instrument is being returned to Hewlett Packard for servicing attach a tag indicating the type of service required return address model number and full ...

Page 33: ...us logic levels are TTL compatible i e the true 1 state is 0 0 Vdc to 0 4 Vdc and the false 0 state is 2 5 Vdc to 5 Vdc Programming and Output Data Format Refer to Section III Operation Mating Connector HP 1251 0293 Amphenol 57 30240 Mating Cables Available HP 10631A 1 metre 3 3 ft HP 10631B 2 metres 6 6 ft HP 10631C 4 metres 13 2 ft HP 10631D 0 5 metres 1 6 ft Cabling Restrictions 1 A Hewlett Pac...

Page 34: ...ilar diagrams that show more specific functions and their associated keys are available on pages 3 34 3 38 3 68 3 96 3 136 3 156 3 166 and 3 17 8 Figure 3 2 on page 3 4 shows rear panel features The major functions of this section are grouped as follows Operating Information HP IB Remote Operation Detailed Operating Instructions RF Frequency Amplitude Modulation Setting Modifications Recall Regist...

Page 35: ...key function by first pressing the blue 1 SHIFT key which causes the display to show SHIFT and then the key under the blue label In these instructions we show the shift key function s blue label in capital letters for example REF SET followed by the actual key you need to press to access that function That is we would show REF SET SHIFT I I FREQ 1 Special Functions You can turn on a special functi...

Page 36: ...ons labeled in blue E D0 0 0 0E 0 0 0 0 0 0 0 0 0 0 0 0 0 These keys are used to set the values of the Signal Generator functions 0 0 The Knob usually modifies a specific digit in the display The keys select which digit will be modified The keys can also select Knob Hold or Knob Increment 0 0 The Step keys enable you to step a function by the value that was set using the S E T key X J The Off On k...

Page 37: ...nector is used to connect the Signal Generator to an external controller for remote operation Z AXIS output provides a blanking pulse for oscilloscope display blanking during retrace Optional rear panel outputs and inputs Option 002 The line fuse 10 MHz OUT is locked to the reference oscillator in use Back up instrument calibration data is stored in a circuit board located in this housing Figure 3...

Page 38: ... 6 Error Code and Message Recovery Example Program 3 23 CLEAR 3 24 Overview 3 24 REMOTE LOCAL 3 25 Local to Remote Transition 3 25 LOCAL 3 25 Remote to Local Transition 3 25 LOCAL LOCKOUT SET LOCAL 3 2 6 Local Lockout 3 26 Clear Lockout Set Local 3 26 SERVICE REQUEST 3 27 Overview 3 27 RQS MASK 3 27 Clearing the Service Request Message 3 27 Figure 3 4 The Status Byte and RQS Mask 3 28 STATUS BYTE ...

Page 39: ...n about HP IB refer to one or all of the following documents IEEE Standard 488 1978 ANSI Standard MC 1 1 Improving Measurements in Engineering and Manufacturing HP part number 5952 0058 the Hewlett Packard catalog of Electronic Systems and Instruments or Tutorial Description of the Hewlett Packard Interface Bus HP part number 5952 0156 All front panel functions are programmable over HP IB except K...

Page 40: ...ess setting the HP IB control lines should be left open circuited IFC ATN REN SRQ and EOI Refer to Figure 2 2 on page 2 7 for HP IB connector pin numbers for these lines To Display the Current Address From the front panel select ENT ADRS fSRTFTI rTO CAT ENT ADRS To Change the Address From the front panel select ENT ADRS rSHIFTI T OCALn followed by a data entry from 00 to 31 and rT lZ TJV or any te...

Page 41: ...d state of the Signal Generator whether addressed to listen or to talk it stops talking and responds to DCL by clearing any uncompleted entries or messages Refer to page 3 24 Local When addressed to listen with REN true the Signal Generator stops talking and responds to the Local command by returning from remote control to local control Refer to page 3 25 Local Lockout Regardless of the addressed ...

Page 42: ...er or the POWER switch can return the Signal Generator to local Generator returns to local and Local Lockout is no longer true when the REN bus lines goes false The Signal Generator cannot pass or take control of HP IB However it does have limited control capability that is intended for servicing the instrument This con trol capability is accessed with Service Special Functions The Signal Generato...

Page 43: ... program codes These program codes are summarized in HP IB Codes Summary in Table 3 8 Signal Generator Function to HP IB Code page 3 32 and Table 3 9 Signal Generator HP IB Code to Function page 3 33 In addition most HP IB codes are printed on the instrument s front panel in light gray print near the code s associated key Input Syntax Input data information consists of one or more bytes sent over ...

Page 44: ... could be changed first to achieve the setting but setting AM first would not always be successful For example if you were changing back to the first example to an amplitude of 14 dBm and AM depth of 99 setting the AM first would not set the requested AM setting To eliminate this sequence dependency problem when setting AM or amplitude first turn off AM then set the amplitude then set the AM depth...

Page 45: ...SIRE FM ON X SELECT FM MODULATION SOURCE 1 YES N0 DESIRE SP87 V i SP8 OESIRE SP6 X i I YES IS FM DESIRED WITH un MODULATION SOURCE OF u FMNT FMBA OR SP112 I YES MF DATA UNITS FR DATA UNITS T DESIRE FM ON V IYES FM DATA UNITS FINISHED PM PMOF FR PM Source2 C S T R T 1 PMOF DESIRE PM ON YES SELMT PM MODULATION SOURCE 2 FR DATA UNITS DESIRE PM ON YES PM DATA UNITS FINISHED NO V 1 FM Modulation Source...

Page 46: ...at is in the band that allows the desired FM or M setting 8 Select the desired FM or t M deviation setting 9 Select either the stop or start frequency setting whichever of thes which was not set in step 7 Valid Character Entry When entering data over HP IB the data entry can take the form of Implicit point notation for example 100 MZ or Fixed point notation for example 100 0 MZ or Exponential nota...

Page 47: ... Signal Generator can output the following messages and display information normally viewed on the front panel display using HP IB codes that do not have equivalent front panel k ys the HP IB codes are in parenthesis after each message listed below Output Messages Hardware Errors OH Execution Errors OE Parameters Changed Messages OC Output Active Function OA Output HI I O Status OL Output Display ...

Page 48: ...nctions so the Signal Generator will automatically adjust or turn off the functions that are preventing the new setting For example AM is turned off when pulse modulation is selected the Output Parameters Changed Message is AM TURNED OFF C11 Refer to Messages page 3 177 for more information about these messages each message code is prefixed with the letter C in that listing The presence of this me...

Page 49: ...one program line 10 above will reset the appropriate status bit unless RQS is true in which case the Status Byte must be read again to clear the status bit Note that you should not execute an instrument function between setting up the instrument for data output and reading the data from the Signal Generator To illustrate this consideration refer to the OE example above If you were to insert a line...

Page 50: ...s That Could Be Output 200 indicates the function is off 201 indicates RF OFF for amplitude only 202 indicates reverse power is tripped for amplitude only A space character is placed before and after the numeric portion of the string Output String Formats Table 3 4 Output Active Function String Formats on the following page lists the output format for each active function string The meanings of sy...

Page 51: ...tart Frequency Stop Frequency Start Amplitude in dBm in volts or EMF volts Stop Amplitude in dBm in volts or EMF volts Sweep Time Leading zero digits greater than th String Format FR sdddddddddd O HZ AP sddd d DM AP sddd d DB AP d ddddddddd VL AM dd d PC FM ddddddd O HZ PM ddd dddddd RD MF dddddd d HZ ML d dddd VL FA dddddddddd O HZ FB dddddddddd O HZ AA sddd d DM AA d ddddddddd VL AB sddd d DM AB...

Page 52: ...as a string that represents the HI and LO annunciators Annunciator HI LO neither HI nor LO Numeric Value Representation 1 1 0 String Representation HI LO OK Following is a programming example in BASIC for outputting HI LO status OL Output from the Signal Generator address 19 the status of its HI LO annunciators for an external ac coupled AM signal To output the numeric value 10 OUTPUT 719 AMOL 20 ...

Page 53: ...e when the Signal Generator is further addressed to talk Following is a programming example in BASIC for outputting display information Output the current display of the Signal Generator address 19 including the cursor position and annunciators Assuming a function was executed to enable you to get the display you want 10 DIM AS 74 20 ENTER 719 A 30 ENTER 719 C 40 ENTER 719 N Define string big enou...

Page 54: ... 048 4 096 8 192 16 384 32 768 65 536 131 072 262 144 524 288 1 048 576 2 097 152 4 194 304 8 388 608 Example With a display of I0 0 0 00000CTZ I W 0 0 DII FHEQ AMPTD Alphanumeric characters output will be 100 000000MZ 140 0DM Cursor value output 4th cursor from the left will be 24 16 Annunciator value output for FREQ and AMPTD will be 2 5 2 2 0 3 2 1 0 4 8 5 7 6 1 0 4 8 608 Outputting the display...

Page 55: ...L Execution CALL Change CALL Hardware IMAGE EXECUTION ERROR CODE K ENTER Gen Mssg 1 74 PRINT Mssg 1 74 SUBEND SUB Change COM Gen addr Gen OUTPUT Gen OC ENTER Gen Mssg_code PRINT USING 560 Mssg_c IMAGE CHANGE CODE ENTER Gen Mssg 1 74 PRINT Mssg 1 74 SUBEND I Hardware SUB Hardware COM Gen addr Gen OUTPUT Gen OH ENTER Gen Mssg_code ode K IF Mssg_code 0 THEN 690 ENTER Gen Mssg_code PRINT NO HARDWARE M...

Page 56: ...e cleared because no units terminator has been specified Also with the Clear command Clear Status Byte occurs possibly clearing up to 6 status bits The Clear command does not affect instrument settings However selecting Instrument Preset IP Partial Preset PP or turning the Power from Standby to On will reset instrument settings as described in the Detailed Operating Instruction Instrument Preset P...

Page 57: ...leared LOCAL Remote to Local Transition The Local message is the way the controller sends the Go To Local GTL bus command The Signal Generator returns to local control when it receives the Local or Clear Lockout Set Local message The Signal Generator also returns to the local mode when the front panel LOCAL I key is pressed provided Local Lockout is not in effect If the instrument is not in local ...

Page 58: ... the transition from remote to local When in local lockout the Signal Generator can be returned to local only by the controller using the Local or Clear Lockout Set Local messages or by setting the Power switch to Standby and back to on or by removing the bus cable NOTE Return to local while in local lockout can be accomplished by switching the fPOWER I from STBY to ON Returning to local control i...

Page 59: ...IFT INT the decimal equivalent of the binary 8 bit byte and any terminator such as HZ UVn Example Enable status bits 0 End of Sweep 1 Hardware Error and 7 Parameters Changed to cause a service request SRQ bus line true by unmasking those bits that is set the Signal Generator s RQS mask to binary 1000001 1 decimal 131 Set the mask value to Local operation Remote operation binary 10000011 decimal 13...

Page 60: ...11 SRO ERROR READY LOCAL REMOTE EXECUTION ERROR ii ii ii ii 5 32 4 16 3 B 2 4 ii n ii II 0 1 0 s 1 0 1 0 1 0 0 0 0 1 1 1 1 I HARDWARE ERROR 1 2 0 BIT 6 OF THE ROS MASK DOES NOT ENABLE ANY C THUS IT CAN BE TRUE OR FALSE AND NOT AFFECT TURN ON DEFAULT VALUE FOR THE MASK IS BINARY DECIMAL 0 END OF SWEEP 1 0 1 0 s 1 0 ONDITION ROS 00000000 Figure 3 4 The Status Byte and RQS Mask 3 28 ...

Page 61: ...or example Program Statement in BASIC 10 S SPOLL 719 If the RQS bit is not set the Status Byte will reflect the current status of the instrument If the RQS bit is set the Status Byte will reflect the status of the instrument when the RQS bit was first set or when the Status Byte was last read with RQS set To actually get the current status of the instrument the Status Byte should be read again Not...

Page 62: ... with each address to talk The Detailed Operating Instruction Messages lists the error codes with their respective messages To properly retrieve all Hardware Error information re fer to the example program in Data Output in this HP IB information section Reset with an Output Execution error message to the 8642A B HP IB program code OE 1 2 Error code that caused bit to be set can be determined by r...

Page 63: ...e Service Manual for a detailed description of these routines Display Control Via HP IB Selecting the SHIFT I key twice when in the local mode will display the instrument settings last selected In the remote mode you can send SHSH to achieve this same effect This may be useful when outputting display information Remote Indicators The Signal Generator displays HP IB annunciators to indicate its cur...

Page 64: ...er Units Cont d radian second millisecond Sweep Sweep Time Auto Sweep Manual Sweep Single Sweep Relative Reference Set Relative Zero Relative Off Other Instrument Preset Partial Preset Special Function Message Output Hardware Error Output Execution Error Output Parameters Changed Output Active Function Write Service Request Mask Output HI LO Annunciator Status Clear Status Byte Step Up Step Down I...

Page 65: ... 49 3 49 3 105 3 39 3 167 3 167 3 138 3 149 3 143 3 142 3 141 3 141 3 131 3 179 3 131 3 52 3 85 Code NT2 OA2 OC OE OF2 ON2 OH OL2 PC PLON PLOF PM1 PP R0 R1 RC RD RF2 RM RS2 RZ2 SA2 SC SG2 SM2 SP SQ SS ST1 SV UP23 UV VL XA2 XD2 0 9 on code For example internal modulat ceded by an active function code for e Parameter Internal Output Active Function Output Parameters Changed Output Execution Error Of...

Page 66: ... S E E D This function enables you to view or set the HP IB address from the front panel This key enables you to return to local from remote 0 I MODULATION SOURCE I You can view or set the RQS mask from the front panel by selecting the keys SHIFT INT j Figure 3 5 HP IB Related Front Panel Keys 3 34 ...

Page 67: ... numeric characters ASCII ASCII is an abraviation for American Standard Code for Information Interchange pronounced ask ee RQS RQS request service is from the Signal Generator s point of view The request service RQS bit is in the 8642A B Status Byte This bit affects when the service request SRQ line is pulled on the HP IB interface Refer to page 3 27 SRQ SRQ is from the HP IB controller s point of...

Page 68: ...ce to the Signal Generator s Last Selected Reference 3 46 How to Display the Current Frequency Reference 3 46 REL OFF 3 47 How to Turn Off the Frequency Relative Mode 3 47 HP IB Codes 3 47 Comments 3 47 RF FREQUENCY SWEEP 3 49 Table 3 12 RF Frequency Sweep Operating Characteristics 3 49 How to Select Stepped Frequency Sweep 3 50 SPCL 123 3 50 How to Select Phase Continuous Frequency Sweep Special ...

Page 69: ...ta keys the Knob Step keys or the Off On key CD CD CDCD These functions enable relative RF frequency settings These keys enable an RF frequency sweep The sweep modes available are auto manual or single rz a CD CD El CD CD CD CD CD C D CD These terminator keys enable you to complete a data entry Figure 3 6 RF Frequency Related Functions 3 38 ...

Page 70: ...ut level drops rapidly Conditions 8642A 8642B To within 100 Hz of final frequency The divide bands divide from the fundamental band divide band 9 as shown in Table 3 11 below Although the heterodyne band Het Band covers a frequency range that is included in divide bands 1 through 6 0 100000 to 132 187 500 MHz the heterodyne conversion technique allows improved modulation characteristics and wider ...

Page 71: ...s each time the special function is selected For example selecting SPCL SHIFT I 1 I F2 4 J m increments output frequency by 0 1 Hz The Signal Generator cannot directly display this RF frequency increase or decrease in its normal frequency display so it indicates the change with a lighted MSSG annunciator Scrolling through the message list using the MSSG J key will then display the amount of freque...

Page 72: ...t RF frequencies as offsets from that reference Refer to RF Frequency Sweep page 3 49 for information on selecting a frequency sweep Refer to Knob page 3 141 and Step Increment Set page 3 149 for information on using these to modify settings Refer to Operating Messages page 3 177 if the instrument displays a message you want clarified Refer to Special Functions page 3 165 for information about the...

Page 73: ...t frequency entries are displayed as relative frequencies in terms of MHz above or below the frequency reference This condition exists until the Relative Frequency mode is turned off The output frequency is equal to the displayed frequency plus the reference frequency Procedures Note Put the instrument in its initialized state by selecting INSTR PRESET REL ZERO How to Set the Current Output Freque...

Page 74: ...cy output of 100 MHz configure the front panel to allow entry and display of all frequency setting values as an offset from a 1 MHz frequency reference First select 1NSTR PRESET Then perform the following steps LOCAL keys program codes ENTRY F R E O SHIFT ENTRY REF SET DATA I H I MHz I U I V I FRRS 1 MZ Display Q Q r a r a r a r a r a r a 13 Zj fcj IU kj tu u iu i u r m TI m I 1 KJ fcJ JJ Ml FREQ ...

Page 75: ...with Other Instrument Settings Some settings are limited by the interaction of coupled functions for example FM deviation and RF frequency Refer to the appropriate Detailed Operating Instruction for setting limitations and be aware that any restrictions are due to the absolute output frequency not the relative frequency setting Relative RF Frequency Sweep It is not possible to set an RF frequency ...

Page 76: ...0 000 kHz 100 000 kHz 50 000 kHz2 25 000 kHz2 12 500 kHz2 6 250 kHz2 3 125 kHz2 25 000 kHz2 400 000 kHz 5 ms minimum 999s maximum Maximum and minimum sweep times are also dependent on the sweep span and carrier frequency 0 to 10 Vdc TTL Positive True 1 In AUTO sweep mode it is not possible to set start and stop end points if one with a second end point greater than 132 187500 MHz band 6 Also it is...

Page 77: ...nal Generator to begin sweeping immediately after end points are set The SWPNG annunciator indicates that a sweep is occurring If Phase Continuous Frequency Sweep is desired but Stepped Frequency Sweep is on one of the start or stop frequencies must be turned off using a procedure from How to Stop the Sweep below before Phase Continuous Frequency Sweep Special Function 123 can be selected START FR...

Page 78: ...than 132 187500 MHz Frequency Band 6 For more information about frequency bands refer to RF Frequency page 3 39 0 Setting a sweep across 1057 5 MHz 8642B only Setting FM or M Manual Sweep Selecting manual sweep does not start a sweep but enables the Knob or the Step keys to control a frequency sweep MANUAL I SHIFT I fSTUP FREQ I HP IB code FASM Turn the Knob or select the Step keys to sweep betwee...

Page 79: ...ining portion of How to Set Sweep Time is comprised of two parts The first part which starts on page 3 53 develops some calculations for Stepped Frequency Sweep that will enable you to determine 1 the number of steps automatically selected 2 the frequency step size automatically selected 3 the required sweep time that will select a desired number of frequency steps and 4 the required sweep time th...

Page 80: ... that will select a desired number of frequency steps page 3 54 and 4 the required sweep time that will select a desired step size page 3 57 However these calculations do not directly apply to situations when the start end point is equal to the stop end point zero span Refer to Zero Span for Stepped Frequency Sweep on page 3 64 for information about X axis steps in zero span The minimum frequency ...

Page 81: ...te a sweep time that could be selected for a desired number of steps 3a First you must ensure that the desired number of steps is between the maximum and minimum number of steps possible The maximum number of frequency steps is equal to the minimum of 1023 or Start Frequency in Hz Stop Frequency in Hz _ _ The minimum number of frequency steps equals the minimum of INTEGER OF 275 ms Min Dwell Time ...

Page 82: ... 19 Disable Settling selected First select Special Function 1 19 SPCL rsHim rn r n TO m Calculate the required sweep time setting for the 100 frequency steps using calculation 3 Maximum number of steps is equal to the minimum of 1023 or 1100 000 000 Hz 500 000 000 Hz 1 Hz 400 000 000 Since 1023 is less than 400 000 000 the maximum number of steps is 1023 Minimum number of steps is equal to the min...

Page 83: ... f STOP I FREQ DATA I s I L_J M I y l DATA SEES FASA ST 8 1 SC FA 100 MZ FB 500 MZ These codes are not independent and might need to follow a specific sequence for entry Refer to the discussion about Sequence Dependency which begins on page 3 12 in the HP IB portion of this Section III Display IBC ECOCSCCTZ 5 8 0 0 0008BCTZ The display usually shows the start frequency and the stop frequency setti...

Page 84: ...275 ms Min Dwell Time in ms The minimum step size is equal to the maximum of 1 Hz or Start Frequency in Hz Stop Frequency in Hz 1023 4b When the sweep step size equals the minimum use a sweep time setting in ms equal to or greater than the result of the following calculation Start Frequency in Hz Stop Frequency in Hz Step Size in Hz 1 X Min Dwell Time in ms When the sweep step size is greater than...

Page 85: ...an of 400 MHz is divided by the step size of 8 MHz 400 MHz 8 MHz 50 Maximum step size is equal to the maximum of 1 Hz or 1100 000 000 Hz 500 000 000 Hz INTEGER OF 275 135 400 000 000 Hz or 400 MHz Since 400 MHz is greater than 1 Hz the maximum step size is 400 MHz Minimum step size is equal to the maximum of 1 Hz or 1100 000 000 Hz 500 000 000 Hz 1023 391 006 Hz or 0 391006 MHz Since 0 391006 MHz ...

Page 86: ...nd mighl need to follow a specific sequence for entry Refer to the discussion about Sequence Dependency which begins on page 3 12 in the HP IB portion of this Section III Display fcj fcj kj kj kj kj kls in 5 kj kJ kj IU kj u iu in The display usually shows the start frequency and the stop frequency settings If another active function is seleHed the display could indicate frequency sweep with the S...

Page 87: ...ally selected X axis steps based on a sweep time setting page 3 62 and 6 the required sweep time to select a specific number of X axis steps page 3 62 Since some of the calculations below use the frequency band divide number the number for each band is listed in the following table Band 10 9 8 7 6 5 4 3 2 1 Het RF Frequency Range 1057 500001 to 2115 000000 8642B only 528 750001 to 1057 500000 264 ...

Page 88: ...eep Time in ms Divide Number 3 Calculate the minimum fastest sweep time setting for a desired non zero frequency span Minimum sweep time in ms is equal to the maximum of 5 ms or Start Frequency in Hz Stop Frequency in Hz X Divide Number X 0 002 ms If the result is not an integer number of ms use the next highest integer number of ms For example if the result is 52 8 ms use 53 ms if the result is 5...

Page 89: ...ms is equal to Desired Number of Steps X 1 ms Note The X Axis Output changes in steps while frequency changes in a phase continuous manner Example for Calculation 3 Phase Continuous Frequency Sweep Set the instrument to a known state by selecting INSTR PRESET I Set a Phase Continuous Frequency Sweep from 250 2 to 250 3 MHz at the minimum possible sweep time This sweep will occur in divide band 7 w...

Page 90: ... 5 0 3 0 0 0 0 0CTZ The display usually shows the start frequency and the stop frequency settings If another active function is selected the display could indicate frequency sweep with the SWPNG annunciator or by displaying FRQ SWEEPING in the left portion of the display above the FREQ annunciator The SPCL annunciator is also displayed To see that Phase Continuous Frequency Sweep has indeed been s...

Page 91: ...During auto or single sweep the Knob Step keys and Data keys can be used to change the start and stop end points and sweep time values During manual sweep the Knob and Step keys can only be used to perform the manual sweep HP IB How to Manually Sweep In manual sweep mode HP IB codes UP and DN can be used to step manually by one step each time the code is sent Knob rotation is not possible via HP I...

Page 92: ...s available at the Z AXIS output The blanking pulse is TTL positive true for CRT blanking during retrace There is a time that occurs between the end of the sweep and the beginning of the next sweep while the Z AXIS output is blanked and the frequency and X AXIS output are being reset This time is called start of sweep settling time Start of sweep settling time is not included in the sweep time set...

Page 93: ...e normal sweep mode Sweep Up and Down Off Specia Function 221 and the up and down sweep mode Sweep Up and Down On Specia Function 121 The waveforms are not drawn to scale There is no start of sweet settling time when this special function is selected Also Z AXIS is always a TTL low 221 Sweep Up and Down Off This special function re enables the normal sweej disabled with Special Function 121 Specia...

Page 94: ...7 REF SET 3 78 How to Set a Reference to a Specific Amplitude in units of dBm V mV fiV EMF V EMF mV or EMF nV 3 78 REF SET 3 79 How to Set a Reference to a Specific Amplitude in units of dB relative for example dBf or dBV 3 79 How to Reference to the Signal Generator s Last Selected Reference 3 80 How to Display the Current Reference 3 80 REL OFF 3 81 How to Turn Off the Relative Mode 3 81 HP IB C...

Page 95: ...er amplitude values in EMF units The key provides a convenient and rapid way to toggle the RF Output off and on without changing the attenuators B ENTRV N H H CD These functions enable relative amplitude settings I I I AMPTD J These keys enable an amplitude sweep The sweep modes available are auto manual or single O O O O Qi DO These terminator keys enable you to complete a data entry Figure 3 8 A...

Page 96: ...o 140 0 dBm 1 78V to 0 023 MV 3 56 EMF V to 0 046 EMF MV 125 0 to 33 0 dB uV 131 0 to 27 0 dB EMF uV 17 0 to 140 dBm 1 59V to 0 023 MV 3 19 EMF V to 0 046 EMF MV 124 0 to 33 0 db iV 130 0 to 27 0 dB EMF MV 16 0 to 140 0 dBm 1 41V to 0 023 MV 2 83 EMF V to 0 046 EMF uV 123 0 to 33 0 dBMV 129 0 to 27 0 dB EMF MV 0 1 dB 1 dB 3 dB 100 ms 50 ohms 0 75 dB 1 5 1 2 0 1 25W 50 Vdc 55 dBc at 10 dBm Typi cal...

Page 97: ...PTD DATA EKDHEDmi AP 107 3 DM Display i iu kj fcj t i LI u u u MI c ra i 73 TJ fn I KJ I J XI Ml Amplitude has been set to 107 3 dBm The cursor above the amplitude display setting indicates amplitude is the active function Example Set the RF output to 6 dBuV LOCAL keys 4aan program codes ENTRY AMPTDJ DATA LsJ IT AP 6 DU Display 0 0 0 0 0 0 0 0CTZ 5 0 U 3 AMPTD REL Amplitude has been set to 6 0 dBu...

Page 98: ...r until the EMF mode is turned off You can turn off the EMF mode from the front panel in the same way you turned it on EMF SHIFT 1 I INCR SET 1 I OFF ON 1 HP IB code EMOF Example Turn on the EMF mode LOCAL keys program codes SHIFT 1 ENTRY INCR 1 ON 1 I SET EMON The EMF mode has been activated as indicated by the EMF annunciator Until this mode is turned off subsequent amplitude entries will be in ...

Page 99: ...e level of the carrier frequency and associated harmonics without adjusting the output attenuators Refer to Table 3 14 below The amplitude portion of the display reads RF OFF Table 3 14 RF OFF Output Amplitude Levels RF Frequency MHz 1057 500001 to 2115 000000 528 750001 to 1057 500000 0 100000 to 528 750000 except Heterodyne Band 0 100000 to 132 187500 Heterodyne Band Only dB relative to the carr...

Page 100: ... Used for Increment Set Can Be Different Than Units Used for the Amplitude Setting An amplitude increment value can be set using a different unit specifier than the unit specifier displayed for example the amplitude increment could be in dB with an output setting in volts When dBm V mV uV or dBuV is selected the Signal Generator allows increment settings in dB V mV or uV When EMF V EMF mV EMF uV o...

Page 101: ... is enabled ALC Off Special Function 4 Pulse Modulation and Amplitude Sweep 209 Attenuator Range Hold Off This special function turns off Attenuator Range Hold that is selected with Special Function 9 119 Disable Settling This special function allows the Signal Generator s microprocessor to respond to new commands without waiting for the internal circuitry to settle When using this special functio...

Page 102: ... cn CJl O 1 00 O l 1 C D O O 1 4 O 1 O l o 1 J o 1 CD o o 1 O O l O cn o O 1 0 0 o cn en O 1 ro cn 1 o o 1 O cn 1 n O l O 1 CD O O t O l o I j O l 1 cn o o 1 CD O 1 cn cn O 1 CD O cn o o l cn en o 1 r o o I vl O 1 en o 1 cn cn cn o O 1 cn cn I en e t o 1 O l p o l CO O l o 1 CD O l 1 o r u 1 cn o 1 cn O 1 cn o I f o rt o 1 en o 1 CO o o 1 ro o 1 CO en O 1 U cn 1 o o 1 t cn I CO en f o 1 t p o 1 ro...

Page 103: ...20 15 AVAILABLE AMPLITUDE RANGES dBm 10 15 20 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 140 135 130 125 120 115 110 105 100 95 90 85 80 75 AVAILABLE AMPLITUDE RANGES dBm 65 60 55 CZ3 rnn AVAILABLE RANGE OF AMPLITUDE AMPLITUDE RANGE AT WHICH AMPLITUDE IS SPECIFIED AMPLITUDE RANGE AT HHICH AM IS SPECIFIED Figure 3 9 Attenuator Range Hold Amplitude and AM Ranges 3 76 ...

Page 104: ... displayed as relative amplitudes in terms of dB above or below the amplitude reference This condition exists until the Relative Amplitude mode is turned off The actual output amplitude is equal to the sum of the amplitude reference and the displayed amplitude Procedures Note Put the instrument in its initialized state by selecting flRSTR PRESET 1 REL ZERO How to Set the Current Output Amplitude S...

Page 105: ...quent amplitude settings to display the current output amplitude as dB relative to the amplitude reference AMPTD 1 REF SET I SHIFT 1 I AMPTD I followed by the value of the desired reference amplitude in dBm V mV or uV REF SET Example 1 Configure the front panel to allow all amplitude setting values to be entered and displayed as offset from a IV amplitude reference First select fTNSTR PRESET 1 to ...

Page 106: ... therefore 20 dB 120 dBm 140 dBm REF SET How to Set a Reference to a Specific Amplitude In units of dB relative for example dBf or dBV If the output amplitude has already been set to be displayed in relative units for example dBf or dBV use the following procedure to set a specific amplitude reference rAMPTD I followed by the value of the desired reference amplitude in relative dB units and REL ZE...

Page 107: ... AMPTD REL The AMPTD REL annunciators indicate the amplitude display is relative to a reference amplitude The displayed amplitude is 0 0 dB the actual amplitude output can be displayed in dBm by selecting REF SET SHIFT I FREQ 1 The dBm key will function as a dB key when the amplitude setting is relative Note that the amplitude reference would be displayed as 9 5 dBm because the reference can only ...

Page 108: ... for information about changing amplitude values from one unit to another When the dBm and dBuV Keys Function as dBuV Terminators Both the dBm key rSHITBEMl and the dBuV key Q T function as dBuV terminators when the amplitude is set in dBuV All other relative amplitude settings use only the dBm key as a dB terminator HP IB Either DB or DM When in the relative amplitude mode DM does not set dBm DM ...

Page 109: ...ing Instructions Refer to Amplitude page 3 69 for additional information about setting amplitude Refer to Knob page 3 141 and Step Increment Set page 3 149 for information on using these to modify settings Refer to Instrument Preset Partial Preset page 3 1 39 for information on setting the intrument to an initialized state that maintains preset references including the selected amplitude units Ref...

Page 110: ... amplitude range Over second highest 10dB of amplitude range 10 For crt display blanking during retrace2 of 30 dB is possible However the lowest 10 dB of amplitude range is not specified the Z axis output with a plotter for pen lift Procedures Note Put the instrument in an initialized state by selecting I INSTR PRESET I How to Turn On Amplitude Sweep Turn on amplitude sweep by selecting the amplit...

Page 111: ...When amplitude sweep is stopped output levels are reduced to the levels described in Table 3 14 RF OFF Output Amplitude Levels on page 3 72 We recommend you exit amplitude sweep this way to prevent Parameter Changed messages that are discussed on page 3 182 2 You can also stop the sweep by turning off just one of the end point settings for example START AMPTD I r o T F o m HP IB code AAOF When amp...

Page 112: ...PNG annunciator is displayed for the duration of the single sweep The single sweep can be stopped to display the actual output amplitude by selecting manual sweep When operating the instrument locally a single sweep can also be conveniently restarted by pressing the I OFF ON 1 key twice when in the single sweep mode Start amplitude or stop amplitude must be the active function in order to use the ...

Page 113: ...calculations do not directly apply to situations when the start end point is equal to the stop end point zero span Refer to Zero Span for Amplitude Sweep on page 3 92 for information about X axis steps in zero span These calculations apply only to logarithmic amplitude sweep Calculations for Linear Amplitude Sweep Special Function 1 22 are not discussed because calibration data used during linear ...

Page 114: ...er of steps is between the maximum and minimum number of steps possible The maximum number of amplitude steps is equal to Start Amplitude in dBm Stop Amplitude in dBm 0 1 dB The minimum number of amplitude steps equals the minimum of 5 or Start Amplitude in dBm Stop Amplitude in dBm 0 1 dB 3b If the desired number of steps is equal to the maximum use a sweep time setting in ms equal to or greater ...

Page 115: ...ual to a minimum of 5 110 or 1 0 dBm 21 dBm 110 0 1 dB Since 5 is less than 1 10 the minimum number of steps is 5 Therefore it should be possible to select 1 00 steps since that value is between the minimum value S and maximum value 1 10 To get 100 amplitude steps you can set the sweep time between the results of the following calculations 100 1 X 3 ms 303 ms 100 2 X 3 ms 306 ms LOCAL keys SWEEP I...

Page 116: ...size 4a You need to choose the step size so the amplitude span divided by the step size is an integer You must also ensure that the desired step size is between the maximum and minimum step size possible The maximum step size is equal to the maximum of 0 1 dB or Start Amplitude in dBm Stop Amplitude in dBm 5 The minimum step size is equal to 0 1 dB 4b When the sweep step size equals the minimum us...

Page 117: ...1 dB Maximum step size is equal to the maximum of 0 1 dB or 1 0 dBm 10 dBm 4 dB Since 4 dB is greater than 0 1 dB the maximum step size is 4 dB Therefore it should be possible to select a 0 8 dB step size since that value is between the minimum value 0 1 dB and maximum value 4 dB To obtain a step size of 0 8 dB you can set the sweep time between the results of the following calculations 1 0 dBm 10...

Page 118: ... The display usually shows the start amplitude and the stop amplitude settings If another active function is selected the display could indicate amplitude sweep with the SWPNG annunciator or by displaying SWEEP in the right portion of the display above the AMPTD annunciator To actually see the 0 8 dB steps on the display you can select manual sweep and turn the Knob slowly or use the Step keys 3 9...

Page 119: ...and Stop Amplitude Entries Are Accepted If the amplitude values entered are accepted both values will appear in the display If the amplitude values entered are not accepted a message will either be queued up or displayed to direct you to the entry error Modulation Types Not Possible During Amplitude Sweep AM and pulse modulation are not possible during amplitude sweep Limitations on Display Resolu...

Page 120: ...ep time setting Also start of sweep settling time is not selectable For amplitude sweep this settling time is approximately 1 5 of sweep time with a minimum of 7 ms and a maximum of 500 ms Related Special Functions 121 Sweep Up and Down On During auto or single sweep modes the Signal Generator sweeps from the start end point to the stop end point and then sweeps from the stop end point to the star...

Page 121: ...put disabled with Special Function 122 Refer to Knob page 3 141 and Step Increment Set page 3 149 for information on using these to modify settings Refer to Instrument Preset Partial Preset page 3 139 for information on setting the instrument to an initialized state that maintains preset references including the selected amplitude units Refer to Operating Messages page 3 177 if the instrument disp...

Page 122: ...tion Frequency Correction Off 3 115 115 Negative FM Polarity 3 115 116 DC FM Correction Off 3 116 117 DC FM Update Mode On 3 116 118 AC Coupled DC FM On 3 116 119 Disable Settling 3 116 248 Calibrate the Modulation Frequency Bands Again 3 116 MODULATION t M 3 119 M 3 119 Table 3 22 M Operating Characteristics 3 119 Figure 3 15 M Deviation Limitations for each RF Frequency Band 3 119 INT 3 120 How ...

Page 123: ... SOURCE I 11 INT E T AC tXT DC The Modulation Source keys select whether an internal or external source is used or internal and external sources combined The source of the external modulation is coupled through the input connectors MOD OUT The key is used to set the modulation frequency for all internal modulation sources and for the modulation output The key is also used to set the modulation out...

Page 124: ... 99 9 0 1 3 5 of setting 1 AM 5 of setting 1 AM 8642A Bands 1 8 8642B Bands 1 9 1 2 4 8642A Band 9 HET 8642B Band 10 HET 2 4 6 dc to 100 kHz 20 Hz to 100 kHz dc to 20 kHz 20 Hz to 20 kHz 0 2 radians peak t amplitude above this limit However it n Table 3 11 obtained by selecting Special Function Conditions Output Amplitude 10 dBm1 707 mV 1 41 EMF V 117 0 dBMV 123dBEMFMV 8642A bands3 1 8 HET 8642B b...

Page 125: ...A mmisj ENTRY n DATA nn fo LU AMNT MF 12 KZ AM 80 PC Display m n T i c r p i j ni pt u n ni rx p r i u rx m TI m The RF output is being internally amplitude modulated as indicated by the AM and INT annunciators AM depth is 80 0 Modulation frequency is set to 12 00 kHz The cursor above the AM setting indicates that AM is the active function EXT AC EXT DC How to Set AM with an External Source Source...

Page 126: ...upled Source f EXT AC I This function selects the external ac coupled AM source displaying the EXT and AC annunciators INT EXT AC SHIFT 1 f EXT AC This function selects the external ac coupled AM source and internal AM source summed together displaying the INT EXT and AC annunciators DC Coupled Source 1 EXT DC 1 This function selects the external dc coupled AM source displaying the EXT and DC annu...

Page 127: ...T DCJ ENTRY r i DATA 18 1 UU ULJ AMXD AM 80 PC Display 0 0 0 00000 nz FREQ BE BPL LO AM EXT IW 0 0 3 1 DC AMPTD The RF output is being externally amplitude modulated with an external dc coupled source as indicated by the AM EXT and DC annunciators AM depth setting is 80 0 per volt Modulation frequency is not monitored by the Signal Generator when an external modulation source is used The cursor ab...

Page 128: ...more information refer to Speeding Up Modulation Switching Time on page 3 1 32 The time required to turn on the internal modulation oscillator is increased by approximately 200 ms if DC FM Update Mode Special Function 117 is active For more information refer to 117 DC FM Update Mode On page 3 116 Modulation Restrictions with Other Functions AM and pulse modulation are not possible during amplitude...

Page 129: ... Maximum AM Depth 99 9 97 2 95 0 92 8 90 5 88 4 86 2 84 1 82 0 79 9 77 8 75 8 73 8 71 8 69 8 67 9 66 0 64 1 62 2 60 3 58 5 56 7 54 9 53 1 dBm 140 0 to 14 0 14 1 14 2 14 3 14 4 14 5 14 6 14 7 14 8 14 9 15 0 15 1 15 2 15 3 15 4 15 5 15 6 15 7 15 8 15 9 16 0 16 1 16 2 16 3 V 0 000023 to 1 12 1 14 1 15 1 16 1 18 1 19 1 20 1 22 1 23 1 25 1 26 1 27 1 29 1 30 1 32 1 33 1 35 1 37 1 38 1 40 1 41 1 43 1 45 ...

Page 130: ... 1 74 1 76 1 78 1 80 1 82 1 84 1 87 1 89 1 91 1 93 1 95 1 98 2 00 2 02 2 05 2 07 2 09 2 12 2 14 2 17 2 19 2 22 2 24 dB V 123 4 123 5 123 6 123 7 123 8 123 9 124 0 124 1 124 2 124 3 124 4 124 5 124 6 124 7 124 8 124 9 125 0 125 1 125 2 125 3 125 4 125 5 125 6 125 7 125 8 125 9 126 0 126 1 126 2 126 3 126 4 126 5 126 6 126 7 126 8 126 9 127 0 EMFV 2 97 3 01 3 05 3 07 3 11 3 15 3 19 3 23 3 25 3 29 3 ...

Page 131: ...quence that normally only occurs during instrument power up This function can be used for example to recalibrate the modulation oscillator frequency bands if normal modulation frequency correction has been disabled with Special Function 11 3 Calibration typically takes one to two seconds Related Operating Instructions Refer to Modulation Oscillator page 3 131 for more information about the interna...

Page 132: ...7 501 MHz Refer to RF Frequency page 3 39 for more information about these different bands If FM Pre emphasis is selected more limitations are placed on FM deviation and modulation frequency Refer to the discussion about FM Pre emphasis starting on page 3 113 under 6 FM Pre emphasis On Table 3 19 FM Operating Characteristics Electrical Characteristics FM Deviation Limitations Indicator Accuracy Ra...

Page 133: ... 540 times 1000 This calculation results in 540 kHz which is the maximum possible FM deviation for these settings 3000K 1500 750 375 f MAXIMUM DEVIATION 1B7 5 kHz INT kHz per 93 75 volt EXT 46 B75 23 4375 11 71875 0 1 57 2115 RF FREQUENCY MHz Actual band boundaries are l i s t e d in Table 3 11 1 86428 ONLY Figure 3 13 FM Deviation Limitations for each RF Frequency Band Modulation Frequencies _ 13...

Page 134: ...cy modulate the RF output using the internal modulation oscillator at a 12 kHz rate with 80 kHz FM deviation LOCAL keys program codes ENTRY H MODULATION SOURCE P T ENTRY MOO I FREO DATA m en i i ENTRY H DATA QD QD RT FMNT MF 12 KZ FM 80 KZ These codes are not independent and might need to follow a specific sequence for entry Refer to the discussion about Sequence Dependency which begins on page 3 ...

Page 135: ...ion signal is between 0 95 Vpk and 1 05 Vpk The HI LO annunciators only apply to sinewave inputs The HI LO detectors do not monitor dc voltage input levels External Coupling Any one of the following functions can be used to couple the external FM M INPUT to the FM circuitry AC Coupled Source EXT AC I This function selects the external ac coupled FM source displaying the EXT and AC annunciators INT...

Page 136: ...6 for more information about this special function Rate Determined by the external modulation source frequency NOTE External modulation frequency is not monitored by the Signal Generator The Signal Generator s modulation frequency display refers to the internal modulation oscillator only Deviation FM I and the desired value of FM deviation in MHz kHz or Hz per volt When using an external source th...

Page 137: ...lt Modulation frequency is not monitored by the Signal Generator when an external modulation source is used The cursor above the FM setting indicates FM is the active function HP IB Keys INT EXT DC OFF ON MHz kHz Hz SPCL Codes FMBD FMOF FMON MZ KZ HZ SP Keys FM MOD FREQ INT EXT AC EXT DC INT EXT AC Codes FM MF FMNT FMXA FMXD FMBA Comments External Modulation External modulation frequency is not mo...

Page 138: ...ed FM source RF frequency can take up to 2 seconds to settle to within 100 Hz of the selected frequency Selecting Heterodyne Band Operation Special Function 8 Prefer Het Band can be used to cause the Signal Generator to operate in the heterodyne band regardless of FM deviation whenever RF frequency is less than 1 32 1 87501 MHz This function prevents the Signal Generator from switching from the he...

Page 139: ... 33 046876 to 66 093750 16 523438 to 33 046875 8 261719 to 16 523437 4 130860 to 8 261718 0 100000 to 4 130859 0 100000 to 132 187500 Maximum FM Deviation Settings kHz Pre Emphasis Off 3000 000 1500 000 750 000 375 000 187 500 93 750 46 875 23 437 11 718 93 750 1500 000 per Volt Pre Emphasis On Special Function 6 420 498 210 249 105 124 52 562 26 281 13 140 6 570 3 285 1 642 13 140 210 249 When FM...

Page 140: ...ion are shown for Band 9 and the heterodyne band only To calculate the deviation values for the band you are using use the Divide Number column in Table 3 21 and divide that number into the Y axis deviation value For example the 1 08 MHz FM deviation limit with a 1 kHz modulation frequency would be changed to 2 16 MHz for band 10 divide by 0 5 that same limit for band 8 would be changed to 540 kHz...

Page 141: ...1 1 1 ai S 1 5 fc I 2 I s B 1 1 11 5 5 c E 5 H O CD J 5 iti Pi isi c ISI III i s Hi w Iff r 3 3 s r g B i i S I 1 8 i1 1 s f 1 5 I t i i C D 3 I 1 2 Li 1 1 i 0 0 2 x 0 1 0 g m 1 c ft I m s 2 3 2 s ll fl III S o Hi s s 0 3 t 0 S ill 0 X c s if 1 Hi i i 2 2 3 O OOr 10 o FM DEVIATION Hz Figure 3 14 FM Devation Limits with without FM Pre emphasis 3 1 1 4 ...

Page 142: ...ortion may exceed 0 03 Total harmonic distortion is better than standard performance at all deviations and rates with this special function selected The phase noise performance is degraded by approximately 20 dB at a 20 kHz offset and by approximately 10 dB at a 200 kHz offset when in the Low Distortion FM t M mode 207 Low Distortion FM I M Off This special function switches out the shaper circuit...

Page 143: ...Sweep Special Function 123 dc coupled FM is not possible when DC FM Update Mode is on 217 DC FM Update Mode Off This special function disables the DC FM update that occurs with Special Function 1 1 7 118 AC Coupled DC FM On When the Signal Generator is in the normal ac coupled FM mode the external signal is applied to the FM loop through circuitry that uses a phase lock loop to ensure the accuracy...

Page 144: ... is the common source for all internal modulation as well as for MOD OUTPUT connector Refer to Knob page 3 141 and Step Increment Set page 3 149 for information on using these to modify settings Refer to Operating Messages page 3 177 if the instrument displays a message you want clarified Refer to Special Functions page 3 165 for information about the way these are accessed 3 117 ...

Page 145: ...ever if the divide band s maximum internal FM deviation boundaries are crossed the Signal Generator can automatically switch to the heterodyne band which allows wider deviation M at RF frequencies less than 132 187501 MHz Refer to RF Frequency page 3 39 for more information about these different bands Table 3 22 M Operating Characteristics Electrical Characteristics M Deviation Limitations Accurac...

Page 146: ... for band 4 is 3 1 25 radians unless Special Function 8 Prefer Heterodyne Band is selected If you select a deviation of 2 5 radians the Signal Generator will automatically select the heterodyne band Note that the maximum possible deviation for the heterodyne band is 1 00 radians Procedures Note Put the instrument in its initialized state by selecting M can be configured to use either the Signal Ge...

Page 147: ...ns Modulation frequency is set to 10 00 kHz The cursor above the I M setting indicates that M is the active function EXT AC EXT DC How to Set M with an External Source Source fcAUTI Nl Do not apply more than 1 5 Vpk maximum external voltage to the FM M INPUT or damage to the Signal Generator s circuitry could result The external modulation source connects to the FM i M INPUT connector input impeda...

Page 148: ...d M source and internal 4 M source summed together displaying the INT EXT and DC annunciators Rate Determined by the external modulation source frequency NOTE External modulation frequency is not monitored by the Signal Generator The Signal Generator s modulation frequency display refers to the internal modulation oscillator only Deviation M SHIFT TfvQ and the desired value of M deviation in radia...

Page 149: ...y is not monitored by the Signal Generator when an external modulation source is used The cursor above the M setting indicates M is the active function HP IB Codes Keys M MOD FREQ INT EXT AC EXT DC INT EXT AC Codes PM MF PMNT PMXA PMXD PMBA Keys INT EXT DC OFF ON rad kHz Hz SPCL Codes PMBD PMOF PMON RD KZ HZ SP Comments Modulation Types Not Possible During RF Frequency Sweep During Stepped Frequen...

Page 150: ... internal modulation as well as MOD OUTPUT have the same modulation frequency Spurious Signals Spurs That Occur with the Internal Source Internally generated spurs with levels specified less than 100 dBc might be present when the internal modulation oscillator is in use These spurs will be eliminated when no internal modulation source is modulating the carrier and the modulation oscillator out put...

Page 151: ...hout waiting for the internal circuitry to settle When using this special function it s possible to select a function before the previous function has finished settling When settling is disabled response time is improved by up to 40 ms Special Function 119 disables out of lock messages 219 Re enable Settling This special function re enables the settling that is disabled when Special Function 119 i...

Page 152: ...al Characteristics Pulse Modulation Pulse On Off Ratio Rise Fall Time Minimum Pulse Width Maximum Repetition Frequency Nominal Peak Input Level Required Performance Limits 30 dB 45 dB 3 5 us 6 its 50 kHz 1 5V Conditions Output Levels 15 dBm1 RF Frequency 1057 5 MHz RF Frequency 1057 5 MHz2 10 to 90 1 0utput level accuracy is typically 3 dB 2 8642B Band 10 Procedures Note Put the instrument in its ...

Page 153: ...ote that the AM annunciator is displayed if the word PULSE can t be displayed EXTDC How to Set Pulse Modulation with an External Source Source V W W V W V W M CAUTION Do not apply more than 15 Vpk to the AM PULSE INPUT or damage to the Signal Generator s circuitry could result Connect the external modulation source to the AM PULSE INPUT connector input impedance of 600 ohms and select PULSE 1 SHIF...

Page 154: ... PLON KZ H2 SP Modulation Restrictions with other Functions Pulse modulation and AM are not possible during amplitude sweep Also AM and pulse modulation are not possible when ALC Off Special Function 4 is selected Spurious Signals Spurs That Occur with the Internal Source Internally generated spurs with specified levels less than 1 00 dBc might be present when the internal modulation oscillator is...

Page 155: ... oscillator frequency is set or the internal modulation oscillator is put into use When this calibration is disabled the typical modulation frequency switching time is decreased by approximately 200 ms For more information refer to Speeding Up Modulation Switching Time on page 3 1 32 213 Modulation Frequency Correction On This special function re enables the modulation frequency correction disable...

Page 156: ... Level Range Output Level Resolution Output Level Accuracy Output Impedance Performance Limits 20 Hz to 100 kHz 1 of setting 2 of setting 0 02 0 15 0 to 3 3 Vpk 4 mV 4 15 mV 600 ohms 10 Conditions 0 02 to 15 8 kHz 15 8 kHz Within 1s Procedures Note Put the instrument in its initialized state by selecting I INSTR PRESET I MOD FREQ How to Set Modulation Frequency rrvlOD FREQ I and the value of the d...

Page 157: ...MF ML KZ HZ VL MV SP Comments Speeding Up Modulation Switching Time At instrument turn on all modulation oscillator frequency bands are characterized and given a calibration factor Modulation Frequency Calibration When the modulation oscillator frequency is set or the modulation oscillator placed in use the selected modulation oscillator frequency and its individual frequency band are recalibrated...

Page 158: ...se The phase of the modulation output MOD OUTPUT is 180 out of phase with the internal use of the modulation oscillator Underranging Specified Modulation Oscillator Frequency Modulation oscillator frequencies as low as 10 Hz can be selected However the modulation oscillator s signal characteristics are not specified below 20 Hz Related Special Functions 113 Modulation Frequency Correction Off This...

Page 159: ... 3 127 for specific modulation information as well as internal and external source information Refer to Knob page 3 141 and Step Increment Set page 3 1 49 for information on using these to modify settings Refer to Operating Messages page 3 1 77 if the instrument displays a message you want clarified Refer to Special Functions page 3 165 for information about the way these are accessed 3 134 ...

Page 160: ...ttings 3 139 HP IB Codes 3 139 Comments 3 139 KNOB 3 141 CD CD 3 Hi How to Control Knob Resolution Using the Cursor Positioning Keys 3 141 INCR 3 142 How to Control Knob Resolution by Setting Knob Increment 3 142 HOLD How to Use Knob Hold to Maintain Control of a Function s Value when Another Function Is Active 3 143 HP IB Codes 3 144 Comments 3 145 The Meaning of Multiple Cursors 3 145 STEP INCRE...

Page 161: ...down during power up until instrument settings are displayed bypasses the power up checks E E M ENTRY H M d f m STEP Q Q The Knob usually modifies a specific digit in the display The keys can select which digit will be modified The keys can also select Knob Hold or Knob Increment The Step keys enable you to step a function by the value that was set using the SFF key W The Off On key toggles an act...

Page 162: ... to set the instrument to a known state without losing some frequently used settings This function maintains some current instrument settings turns off others while maintaining their last selected values so they can be selected on with the OFF ONI key and resets other settings to Instrument Preset values Because Partial Preset does not reset the entire instrument state it takes less time than does...

Page 163: ...able 3 25 Instrument Preset Configuration Function RF Frequency Start Frequency Stop Frequency Frequency Reference Amplitude Start Amplitude Stop Amplitude Amplitude Reference EMF Mode AM Depth FM Deviation M Deviation Pulse Modulation Modulation Frequency Modulation Output Level Frequency Sweep Mode Amplitude Sweep Mode Sweep Time Initialized State OFF OFF OFF ON OFF OFF OFF OFF OFF OFF OFF OFF O...

Page 164: ... on the previous page Modulation Frequency Sweep Time Partial Preset also Maintains the next Save Recall register Disables Knob Hold and Knob Increment Maintains all Increment Set values and Knob cursor positions Turns off all special functions with code numbers less than 200 Clears any uncompleted HP IB messages Selects RF Frequency as the active function Selects RF OFF which does not change the ...

Page 165: ... allowing the Knob to continue control of the held function While Knob Increment is selected the Knob is less sensitive to the Knob rotation rate in affecting how much a setting is changed as the Knob is turned This gives you the capability to make individual precise steps with more control using the Knob Procedures The Signal Generator powers up with the Knob function enabled with RF frequency as...

Page 166: ...value on the Knob so you can change a function s value by the increment set values To set an increment set value select RNCR SET followed by the desired value Refer to Step Increment Set on page 3 149 To put the increment set value on the Knob KNOB INCR r S H i m Q The cursor is displayed above the second letter of the active function s units display when Knob Increment is selected For example if ...

Page 167: ... Data keys and the Off On key Knob Hold can be turned on by Selecting the desired active function then HOLD rSHIFT I m fOFF ON I Knob Control is held on the selected function as indicated by the two cursors over that held function Selecting a different function key sets that different function as the active function which can be acted on only by the Step keys or Data keys or the Off On key Knob co...

Page 168: ...t amplitude as the active function by selecting the AMPTD I key 10 0 0 0 0 0 0 0 CT I H 0 0 U I The cursor over the first letter of the units specifier D in DM indicates that Knob Hold has been selected on some function There is no cursor over any of the amplitude digits because the Knob is held on RF frequency which has two cursors over its setting Now turning the Knob changes frequency while sel...

Page 169: ...alue of 1 49 MHz since the maximum possible deviation is 1 500 not 1 501 MHz Partial Preset Does Not Change Increment Set Values Select PARTIAL SHIFT I INSTR PRESET I to put the instrument in a known state without resetting increment set values How Fast You Turn the Knob Affects the Knob Sensitivity Knob sensitivity changes from fine to coarse when Knob rotation is changed from slow to fast unless...

Page 170: ...he Knob this function s value will change by the increment set value Two cursors in the display 1 A cursor above a digit and a cursor above the first letter of the units specifier 555 000000CTZ FREQ 50 0PC AM INT 00 VL AMPTD Indicates that Knob Hold is activated over that function turning the Knob will change the digit under the cursor When you press the Step keys or any Data keys or the Off On ke...

Page 171: ...e V in this case indicates it is the active function and as such that function s value will chage when you press the Step or Data keys or the Off On key if applicable 2 A cursor above each letter of one units specifier and a cursor above the first letter of another units specifier 5 5 5 0 0 0 0 0 0 ffl Z 5 0 0 P C 0 0 V L The two cursors over the letters of a particular function s units specifier ...

Page 172: ...Special Function 250 Refer to RF Frequency page 3 42 Table 3 26 Increment Set Values Function RF Frequency AM Depth FM Deviation t M Deviation Modulation Frequency Modulation Output Level Amplitude Start Stop Amplitude Start Stop Frequency Sweep Time Default Increment 10 MHz 10 5 kHz 0 1 radians 1 kHz 100 mV 1 dB 1 dB 10 MHz 100 ms Maximum Increment 2115 MHz 99 9 3 MHz 200 radians 100 kHz 3 3V 160...

Page 173: ...nge its value as the Step key is selected Refer to Knob page 3 141 for information about other ways to change values using the cursor positioning keys HP IB Keys INCR SET Step Down Step Up Codes IS DN UP Function should be preceded by an active function code Comments Considerations When Using Increment Set with Amplitude Settings If amplitude is displayed in dBm and increment size is in volts the ...

Page 174: ... MHz since the maximum possible deviation is 1 500 MHz not 1 501 MHz How to Put the Increment Set Value on the Knob Select KNOB INCR SHIFT 1 to use the Knob to change function values by the increment set values With Knob Increment the function s value will change approximately 1 5 increments per revolution when the Knob is turned Refer to Knob page 3 142 for more information about putting the incr...

Page 175: ...strument in its initialized state by selectng I INSTR PRESET 1 Procedure To select the Entry Off function ENTRY OFF SHIFT I RF OFF ONI To re enable the Knob and Step keys select a function to be active Example Disable the Knob Step keys etc to reduce the chance of inadvertantly altering the output signal while connecting output cables LOCAL keys program codes SHIFT 1 ENTRY OFF OFF ON EO HP IB Code...

Page 176: ...hat Cannot Be Saved 3 157 SAVE 3 157 How to Save an Instrument State 3 157 RECALL 3 159 How to Recall an Instrument State 3 159 HP IB Codes 3 159 Related Special Functions 3 159 251 Clear Recall Registers 3 159 SEQUENCE 3 161 SET SEQ 3 161 How to Select a Sequence 3 161 SEQ 3 161 How to Step Through the Sequence 3 161 HP IB Codes 3 162 Comments 3 162 3 155 ...

Page 177: ...ECALL REGISTERS C D B These keys enable you to individually save and recall front panel settings D0 This key enables you to sequentially step through the recall registers 3 156 Figure 3 17 Functions Related to Recall Registers ...

Page 178: ...ddress Local or Remote Mode Sequence Settings Special Functions 3 242 243 244 245 248 249 250 251 Service Mode Phase Decrement Phase Increment Phase Decrement Phase Increment Single Modulation Display Firmware Phase Adjust on Clear the Recall by 1 by 1 by E by 5 Degree Degree Degrees Degrees Frequency Correction Information Knob and Steps Registers Procedure Note Put the instrument in its initiali...

Page 179: ...00 prompts These show the current register number of DN 00 and the next register number 01 When you enter the register number the spaces next to the word SAVE will be filled Select QD GD When the register number is entered the display returns to show the current instrument settings Now set the output frequency to 500 MHz rFHEcn GO rro Q D I MHZ V I Save this instrument state in the next available ...

Page 180: ... The following procedure might be used to change the setting in that recall register rRECALL i rcn c u rAWTm CZD C2J C2D r5Fiz DBKn rsavFn Q J How Save Recall Affects the Next Sequence Register Number Saving a register will not change the next sequence register number However recalling a register might change the next sequence register number in the sequence if the recalled register is in the sele...

Page 181: ...Sequence page 3 161 for information on sequencing through a sequential group of recall registers Refer to Special Functions page 3 165 for information about the way these are accessed Refer to Operating Messages page 3 177 if the instrument displays a message you want clarified 3 160 ...

Page 182: ...he instrument in its initialized state by selecting INSTR PRESET SET SEQ How to Select a Sequence Select the sequence range by first selecting the Set Sequence function and then by entering 2 two digit register numbers from 00 to 50 SET SEQ SHIFT I FSEQ and the values for the desired range of recall registers When the Set Sequence function is selected the number of the next register is displayed a...

Page 183: ...gister number is greater than the stop register number the sequence will still increase and wrap around to 00 after 50 For example for a setting from 20 to 1 5 the registers recalled would be 20 21 22 etc to 50 then 00 01 etc to 1 5 Selecting a Random Order of Recall Registers It is not possible to select a random order of recall registers However because 51 registers are available a random order ...

Page 184: ...How to Skip Directly to a Specific Recall Register in the Sequence You can conveniently skip directly to any recall register in the sequence by just recalling that register directly by register number then continuing on in the sequence from that register by just selecting SEQ I Related Operating Instructions Refer to Save Recall page 3 157 for information on saving instrument settings that you can...

Page 185: ...the Signal Generator s Display 3 167 SPCL 3 168 How to Select Special Functions 3 168 SPCL 2XX 3 169 How to Turn Off Special Functions 3 169 How to Display the Special Functions Currently On 3 169 HP IB Codes 3 169 Table 3 28 Summary of Special Functions Function to Code 3 170 Summary of Special Functions Code to Function 3 171 Detailed Descriptions of All Special Functions 3 172 3 165 ...

Page 186: ...ions by selecting this key followed by a valid special function number All of the single digit special functions are labeled in light gray print above digit keys The Help function enables you to display the numbers and descriptions of special functions Pressing the Shift key twice can be used to clear the special function description from the display and return the display to showing normal instru...

Page 187: ...y selecting INSTR PRESET To turn on any of the special functions use SPCL SHIFT p 7 followed by the rode number of the special function To list any currently activated special functions select SPCL SHIFT alone To display the number and description of any special function use HELP rSHIFT t I and one of the methods described below HELP How to List the Descriptions of Special Functions on the Signal ...

Page 188: ...numeric code The SPCL annunciator will be displayed below the special function description after the special function is selected Example Turn on Special Function 9 Attenuator Range Hold On LOCAL keys a 1 SHIFT 1 DATA SPCL SP9 Display 9 RTTEfl RRHEE HQLH DH Attenuator Range Hold has been selected Note the display of the SPCL annunciator Press the SHIFT I key twice to return the display to the curr...

Page 189: ...5 o Select 1 INSTR PRESET I HP IB IP or PARTIAL fSHIFT I INSTFTPRESET I HP IB PP How to Display the Special Functions Currently On SPCL SHIFT 1 F H When SPCL is selected the codes of the currently selected special functions will be displayed in numeric order As each special function is selected it is placed in numeric order in that list HP IB Use Output Display to read these special functions Refe...

Page 190: ... Off DC FM Update Mode AC Coupled DC FM Prefer Heterodyne Band Disable Settling Low Distortion FM M Negative J M Polarity Prefer Heterodyne Band Disable Settling Modulation Frequency Correction Off Calibrate Modulation Frequency Bands Again Sweep Up and Down Linear Amplitude Sweep Phase Continuous Frequency Sweep Disable Settling Special Functions 4 9 Off All Special Functions 200 Off Special Func...

Page 191: ... 5 DISABLE DISPLAY 240 DECR FREQ 0 1 HZ 241 INCRFREQ 0 1 HZ 242 PHASE DECR 1 DEGREE 24 3 PHASE INCR 1 DEGREE 244 PHASE DECR 5 DEGREES 245 PHASE INCR 5 DEGREES 24 8 CAL MOD FREQ AGAIN 249 DISPLAY FIRMWARE INFO 250 PHASE ADJ KNOB UP DN 251 CLEAR RECALL REGS Operation nctions Code to Function 204 DISABLE ALC OFF 205 EXT LOW RATE FM OFF 206 FM PRE EMPHASIS OFF 207 LOW DIST FM PM OFF 208 PREFER DIVIDE ...

Page 192: ...tion 5 or 11 2 is turned off when another FM modulation source is selected 6 FM Pre emphasis On Special Function 6 can be selected to pre emphasize internal or external FM modulating signals with a 7 50 us time constant Pre emphasis boosts high frequencies in the modulating signal prior to modulating the carrier Refer to Modulation FM page 3 113 7 Low Distortion FM i M On This special function swi...

Page 193: ...ormally when dc coupled FM is selected the FM phase lock loop is open causing an offset in the selected RF output frequency To correct this initial offset the dc coupled signal is momentarily switched off while an internal counter is used to determine the amount of RF frequency offset The frequency offset is then corrected and the dc coupled signal is switched back on DC FM Correction Disabling th...

Page 194: ...pecial Function 4 205 External Low Rate FM Off This special function turns off the FM modulation source selected with Special Function 5 When Special Function 5 is turned off in this way the Signal Generator selects external ac coupled FM 206 FM Pre Emphasis Off This special function turns off the pre emphasis selected with Special Function 6 207 Low Distortion FM M Off This special function switc...

Page 195: ...ial Function 121 Special Function 221 sets the Signal Generator to repeatedly sweep from the start end point to the stop end point during auto or single sweep modes 222 Logarithmic Amplitude Sweep This special function selects the normally selected logarithmic stepped output disabled with Special Function 122 223 Phase Continuous Frequency Sweep Off This special function turns off the Phase Contin...

Page 196: ...one to two seconds Refer to Modulation Frequency page 3 133 249 Display Firmware Information This special function displays the current firmware version with a message such as YYMMDD FIRMWARE CODE 13 In this example YYMMDD represents the numbers that will appear in the display where YY is the last two digits of the year MM is the number of the month and DD is the day of the month For example 84122...

Page 197: ...ys 3 178 OPERATING MESSAGES 3 179 MSSG 3 180 Queued Up Messages 3 180 Parameters Changed Messages 3 182 Execution Error Messages 3 184 Hardware Error Messages 3 193 Information Messages 3 194 Prompt Messages 3 196 Out of Lock Messages 3 197 Table 3 29 Out of Lock Messages 3 198 3 177 ...

Page 198: ...The Message key enables you to view queued up messages SHIFT Pressing the Shift key twice can be used to clear messages from the display and return the display to showing normal instrument settings Figure 3 19 Message Related Keys 3 17 ...

Page 199: ...message is queued up and can be displayed using the MSSG I key these messages are noted in the listing The MSSG annunciator in the right portion of the display notifies you that a message is queued up To read queued up messages just select the 1 MSSG I key repeatedly When you read END OF MESSAGE LIST 00 you know there are no more messages in that list When Controlling the Instrument via HP IB You ...

Page 200: ...pied message list and view the first message Select rSTHlFT fMSlaG at any time to begin scrolling through the copied message list e To continue reading messages scroll through the copied message list Select MSSG repeatedly until the display of END OF MESSAGE LIST 00 Selecting MSSG 1 again brings back the normal display of instrument settings For example let s say that you are not currently viewing...

Page 201: ...n with Output Display NO MESSAGE 00 0 No message is available for output over HP IB This message is never displayed locally HP IB This message may be output with OC or OE END OF MESSAGE LIST 00 0 The end of the copied list has been reached This message is viewed after displaying the entire copied message list by repeatedly selecting the MSSG 1 key HP IB This message may be output with OH or MG in ...

Page 202: ... on with pulse modulation AMPTD REF SET TO 1 00UV C2 2002 Amplitude reference was set to 1 00 uV The amplitude reference was set to the dBuV reference which is 1 00 uV due to the selection of dBuV HP IB DU Subsequent amplitude displays will be in dBuV ADJUSTED 002UV RESOL N C3 2003 Amplitude setting was adjusted to 0 002 uV resolution In EMF mode if an attempt is made to set an increment or amplit...

Page 203: ...ng functions was selected when amplitude sweep was on START FREQT I STOP FREQ I AMPTD C M D or PULSE SHIFT I CMTl HP IB codes FA FB AP AM PL AA OFF 30DB MAX SPAN C32 2032 Start amplitude setting was turned off because the new stop amplitude setting was set more than 30 dB away from the start amplitude setting This message is queued up until it is read by repeatedly selecting MSSG 1 amplitude sweep...

Page 204: ...message that might more specifically describe the setting problem attempt a data setting similar to the step attempt that caused this error message NOT POSSIBLE ABOVE MAX E2 4002 Not possible above the maximum setting ever allowed The attempted setting is above the function s maximum possible setting independent of other functions NOT POSSIBLE BELOW MIN E3 4003 Not possible below the minimum setti...

Page 205: ... to a valid setting before using the Step keys FUNC DISALLOWS OFF ON E l l 4011 The active function cannot be turned off or on You attempted to turn off or turn on either FREQ 1 I MOD FREQ I or sweep TIME r s m F T I f START FREQ I HP IB codes FR MF or ST Refer to Modulation Oscillator page 3 131 for a way to effectively turn off the internal modulation oscillator ONLY OFF ON IS ACTIVE E12 4012 On...

Page 206: ...on on setting limitations due to amplitude or refer to the Sequence Dependency discussion that begins on page 3 12 in the HP IB portion of this Section III ONLY INT EXT DC PULSE E26 4026 Only an internal or external dc source is possible with pulse modulation With pulse modulation select only 1 INT I or fEXT DC I For other modulation sources select the modulation type of AM 1 FM 1 or M fSHIFT FM j...

Page 207: ... HP IB FMNT FMXA FMXD or SP5 before selecting FM Pre Emphasis or refer to the Sequence Dependency discussion that begins on page 3 12 in the HP IB portion of this Section III PM LIMITS MIN FREQ E40 4040 The 4 M setting limits the minimum RF frequency value that can be selected Either reduce M deviation or select an RF frequency that allows the M deviation or refer to the Sequence Dependency discus...

Page 208: ...d possibly Special Function 8 Prefer Heterodyne Band and FM To resolve this error either 1 turn off frequency sweep HP IB FAOF FBOF and then possibly select Stepped Frequency Sweep Special Function 223 or 2 select a valid sweep time setting refer to RF Frequency Sweep page 3 60 or 3 possibly turn off FM or select Special Function 208 Prefer Divide Bands or 4 refer to the Sequence Dependency discus...

Page 209: ...r refer to the Sequence Dependency discussion that begins on page 3 12 in the HP IB portion of this Section III DCFM SP117 216 LIMIT E56 4056 DC coupled FM Special Function 117 DCFM Update Mode and Special Function 216 DCFM Correction On are coupled with Special Function 123 Phase Continuous Frequency Sweep and one of those settings is limiting the selection of a frequency sweep To resolve this er...

Page 210: ...during amplitude sweep Turn off amplitude sweep HP IB AAOF ABOF before selecting the output amplitude AMPTD SWP PREVENTS AM E70 4070 AM is not possible during an amplitude sweep Turn off amplitude sweep HP IB AAOF ABOF before selecting AM AP SWP PREVENTS AP OFF E71 4071 Output amplitude cannot be turned off during amplitude sweep Turn off the amplitude sweep HP IB AAOF ABOF before turning off the ...

Page 211: ... 12 in the HP IB portion of this Section III SP9 PREVENTS PULSE JE78 4078 Pulse modulation is not possible when Special Function 9 Attenuator Range Hold is selected Select Attenuator Range Hold Off Special Function 209 before selecting pulse modulation PULSE PREVENTS SP9 E79 4079 Special Function 9 Attenuator Range Hold is not possible when pulse modulation is selected Turn off pulse modulation HP...

Page 212: ...ins on page 3 21 The special functions might remain selected because of a sequence dependency problem Possibly refer to the Sequence Dependency discussion that begins on page 3 12 in the HP IB portion of this Section III 0 9 HZ LIMIT REACHED E88 4088 A maximum RF frequency change of 0 9 Hz can be accumulated using Special Function 240 Decrement Frequency 0 1 Hz or Special Function 241 Increment Fr...

Page 213: ...ter the reverse power protect circuitry is reset in response to message HI RVS PWR PROTECT CLEARED H2 7002 The reverse power protect circuitry was previously tripped but is now reset RECALL ERROR FOUND H10 7010 A recall error has been found This message could be due to a hardware failure for example loss of RAM memory The message means that a recall register that was recalled had no instrument set...

Page 214: ...ear in the display where YY is the last two digits of the year MM is the number of the month and DD is the day of the month For example 57021 8 would be February 1 8 1957 KNOB INCR TURNED OFF 111 Knob increment mode was turned off Cursor positioning keys HP IB KL or KR turn off the Knob Increment mode SETTINGS DISPLAY OFF 121 Special Function 1 3 5 Disable Display was selected and the display of t...

Page 215: ...F FREQ DISPLAY 0 9 HZ 149 RF FREQ DISPLAY 0 8 HZ 148 RF FREQ DISPLAY 0 7 HZ 147 RF FREQ DISPLAY 0 6 HZ 146 RF FREQ DISPLAY 0 5 HZ 145 RF FREQ DISPLAY 0 4 HZ 144 RF FREQ DISPLAY 0 3 HZ 143 RF FREQ DISPLAY 0 2 HZ 142 RF FREQ DISPLAY 0 1 HZ 141 RF FREQ DISPLAY 0 1 HZ 151 RF FREQ DISPLAY 0 2 HZ 152 RF FREQ DISPLAY 0 3 HZ 153 RF FREQ DISPLAY 0 4 HZ 154 RF FREQ DISPLAY 0 5 HZ 155 RF FREQ DISPLAY 0 6 HZ ...

Page 216: ...ng the copied message list refer to Queued Up Messages on page 3 1 80 OFF ON SELECTS EMF ON P2 The EMF mode is off Select 1 OFF ON I HP IB EMON to select EMF on OFF ON SELECTS EMF OFF P3 The EMF mode is on Select 1 OFF ON I HP IB EMOF to select EMF off HIT OFF ON HOLD FUNC P4 Knob Hold is off to hold the active function on the Knob select OFF ON 1 HP IB Send the HP IB code of the desired active fu...

Page 217: ...ESCRIBED SOLUTION DOES NOT ELIMINATE THE MESSAGE THE INSTRUMENT SHOULD BE SERVICED Also these messages can be output using OH Refer to the Output Messages discussion that begins on page 3 16 in the HP IB portion of this Section III and to Hardware Error Messages on page 3 193 Solutions 1 Either reduce the amplitude level reduce the AM depth or reduce the external modulation input level 2 Either re...

Page 218: ...appears to be in lock Internal hardware cannot phase lock to the ex ternal reference Internal hardware had not been able to phase lock to the external reference but now ap pears to be in lock FM phase lock loop cannot track and lock to the time base FM phase lock loop had not been able to track and lock to the time base but now ap pears to be able to track and lock to the time base Output Section ...

Page 219: ...how both alphabetic and numeric characters ASCII ASCII is an abreviation for American Standard Code for Information Interchange pronounced ask ee cursor The cursor is the triangular segment above an alphanumeric character in the display The cursor usually designates the active function and the resolution of the Knob Cursors also indicate the status of Knob Hold and Knob Increment Refer to Knob pag...

Page 220: ... when a message is queued up for display Refer to Queued Up Messages on page 3 180 RQS RQS request service is from the Signal Generator s point of view The request service RQS bit is in the 8642A B Status Byte This bit affects when the service request SRQ line is pulled on the HP JB interface Refer to page 3 27 scroll Scrolling through the Help function list lets you view the description and code ...

Page 221: ...3 I Once you enter the service mode you can access the actual service special functions However you can only key in numbers and terminators selecting any other key will cause the instrument to exit this special mode and display current instrument settings 2 After you enter the service mode you can select the service special function number However the instrument only knows that you have selected a...

Page 222: ... Hz key locally DIMENSION 49 CHARACTER STRING INPUT CHARACTER STRING FOR MESSAGE 1 CLEAR MESSAGE 1 IN THE 8642A B DETERMINE LENGTH OF MESSAGE 1 CONVERT EACH CHARACTER IN C TO ITS EQUIVALENT ASCII NUMERIC CODE 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 DIM C 49 i INPUT C OUTPUT 719 SP3655EN LET L LEN C i FOR 1 1 TO L LET A NUM C I I OUTPUT 719 USING 130 A IMAGE SP3656 K EN N...

Page 223: ...i mal equivalent of an ASCII character Output the message This code is used to display the first half of the message This code is also used to output the entire message via HP IB Backspace to the previous character in the message Output message This code is used to display the second half of the message Table 3 31 ASCII Character Codes ASCII Character space 1 0 1 2 3 Decimal Equivalent 32 33 34 35...

Page 224: ...not recognized as valid MESSAGE 1 CLEARED V90 This message occurs when 6 1 I 5 i 1 5 is selected MESSAGE 2 CLEARED V91 This message occurs when 6 I I 6 I 1 5 1 is selected MESSAGE 1 IS FULL V92 21092 This message might occur after attempting to enter codes into an already full message This message sets the Execution Error bit in the 8642A B Status Byte MESSAGE 2 IS FULL V93 21093 This message migh...

Page 225: ...its in the left column of the table To Select The Following Units dBm1 V mV or V or EMF V EMF mV or EMF V dB A 2 or dB EMF fiV2 dBf dBW dBV dB EMF V dB mV dB EMF mV dB REL dB EMF REL Select the Following Keys f MHz I f GHz 1 V 1 dBm J o r AMPTD 1 SH FT j p 0 S H O F F m or dDor m gor s s g m m eagQEmai AMPTD SHIFT F R E Q 1 3 1 0 1 S 1 e m t r 1 REF SET i f m i S B w QDCID Refer to Relative Amplit...

Page 226: ...lues manually use the following conversion formulas dBm dBf dB V dBmV dBuV dB EMF V dB EMF mV dB EMF uV V mV uV EMFV EMFmV EMFuV dBm dBm 120 0 dBm 13 0 dBm 47 0 dBm 107 0 dBm 7 0 dBm 53 0 dBm 11 3 0 10 dBm 13 0 20 10 dBm 47 0 20 10 dBm 107 0V20 10 dBm 7 0 20 10 dBm 53 0 20 10 dBm 113 0 20 3 206 ...

Page 227: ...uring normal instrument settings display SWPNG indicates that either an RF frequency or amplitude sweep is currently taking place HI LO HI and LO can be used to indicate whether the external modulation source level is too high or too low to obtain the displayed depth or deviation M FM AM These annunciators can indicate the type or types of modulation selected START When the START annunciator in th...

Page 228: ...AA AB AM AP OFF DB DM EXT FM HZ INT KZ MOD FR MOD OUT MR MS MV MZ PC PL PM RD SC SEQ START FRQ STOP FRQ SW TIME UR uv start amplitude stop amplitude AM amplitude modulation amplitude off dB dBm external modulation source FM frequency modulation Hz internal modulation source KHz modulation frequency modulation output level milliradians ms milliseconds mV millivolts MHz percent pulse modulation I M ...

Page 229: ...etailed Operating Instructions 3 35 Display annunciators and abbreviations 3 207 Divide bands 3 38 3 199 DM 3 208 EMF 3 71 ENT ADRS 3 8 3 34 ENTRY OFF 3 143 3 153 Errors see messages 3 179 EXT AC AM 3 98 FM 3 108 M 3 121 Pulse Modulation 3 128 EXT DC AM 3 98 FM 3 108 M 3 121 Pulse Modulation 3 128 EXT REF INPUT 3 3 Familiarization 3 1 FM M INPUT 3 108 3 122 FM 3 105 Deviation limits affected by he...

Page 230: ...t 3 138 Messages affected by partial preset 3 139 Messages 3 16 3 16 Modulation switching time 3 132 OA 3 18 OC 3 16 HP IB continued OE 3 16 OH 3 16 OL 3 20 Output active function 3 18 Output display information 3 21 Output Execution Errors 3 16 Output Hardware Errors 3 16 Output HI LO status 3 20 Output level switching time 3 73 Output messages 3 16 Output modulation source 3 22 Output Parameters...

Page 231: ...eviation 3 208 Phase continuous frequency sweep 3 49 3 64 DC FM limits 3 65 M 3 119 Deviation limits affected by heterodyne band 3 119 EXT AC EXT DC 3 121 INT 3 120 Modulation restrictions with other functions 3 123 Power up self check 3 137 Bypassing the 3 139 POWER 3 137 Pre emphasis 3 113 PULSE 3 127 Pulse Modulation 3 127 Duty cycle 3 127 EXT AC EXT DC 3 128 INT 3 127 Mixed modulation 3 130 Mo...

Page 232: ...5 DISABLE DISPLAY 3 174 240 DECR FREQ 0 1 HZ 3 42 241 INCR FREQ 0 1 HZ 3 42 242 PHASE DECR 1 DEGREE 3 42 243 PHASE INCR 1 DEGREE 3 42 244 PHASE DECR 5 DEGREES 3 42 245 PHASE INCR 5 DEGREES 3 42 248 CAL MOD FREQ AGAIN 3 133 249 DISPLAY FIRMWARE INFO 3 176 250 PHASE ADJ KNOB UP DN 3 42 251 CLEAR RECALL REGS 3 159 Detailed list 3 176 Display current 3 169 Special functions continued Select 3 168 Summ...

Page 233: ...AM Residual FM 4 9 AM FM AND PM TESTS AM Accuracy Incidental PM AM Distortion PM Accuracy and Distortion DC FM Center Frequency Accuracy FM Accuracy Incidental AM FM Distortion 1 kHz 4 10 EXTENDED FM DISTORTION TEST 20 Hz TO 100 kHz HP 8902A 11722A HP 8902A 11722A HP 8902A 11722A HP 8902A 11722A HP 8902A 11722A HP 8902A 11722A 8903A 4 11 INTERNAL MODULATION OSCILLATOR TESTS HP 8903A 11095A Distort...

Page 234: ...NOISE TEST 4 17 EXTENDED PULSE TESTS Rise Time Maximum Rate On Off Ratio 4 1 8 OPTIONAL RESIDUAL FM TEST 4 19 OPTION 001 FREQUENCY AGING RATE RECOMMENDED EQUIPMENT HP 8566A B 8642B 11514A 8491AOPT 006 HP 8566A B 19 80B 11514A 08640 60506 1 MHz LPF HP 8566A B 8642B 1980B 11514A 08640 60506 1 MHz LPF HP 8116A 8566A B 1980B HP 8902A 11722A 8662A FREQ STD 1980B 4 2 ...

Page 235: ...5 440 Hz c The ambient temperature must be 0 to 55 degrees C d Before aging rate tests are performed the HP 8642 must have a 8 day warmup if it has been disconnected from the Mains power for more than 24 hours or if the HP 8642 has been disconnected from the Mains power for less than 24 hours it must have a 24 hour warmup 4 2 RECOMMENDED TEST EQUIPMENT Equipment required for the performance tests ...

Page 236: ...eration and provides the operator with a 90 assurance that the HP 8642 is fully operational There is also an instrument level self test that evaluates the correctness of operation and provides the operator with an 80 assurance that the HP 8642 is operating within its specifications Refer to the INSTRUMENT LEVEL SELF TEST under the DIAGNOSTIC tab in Section VIII Post Repair Performance Testing When...

Page 237: ...Model 8642A B Performance Tests PERFORMANCE TESTS Table 4 2 Recommended Performance Tests and Adjustments After Repairs This does not apply when module exchange is the method of repair 4 5 ...

Page 238: ...140 dBm 140 dBm 140 dBm 140 dBm 140 dBm 140 dBm Conditions band 1 7 8 HET 9 10 band 1 7 8 HET 9 127 dBm 10 dBm includes detector linearity temperature flatness and attenuator accuracy DESCRIPTION Level accuracy and flatness are checked at levels that can be read accurately by a measuring receiver a aapna anDna u n n O HP 8642A B SYNTHESIZED SIGNAL GENERATOR 10 MHz OUTPUT RF OUTPUT REF EXT INPUT SE...

Page 239: ... the HP 8642 as follows INSTRUMENT PRESET AMPLITUDE 10 0 dBm Set up the measuring receiver as follows INSTRUMENT PRESET MEASUREMENT MODERF POWER DISPLAY LOG dBm Set the RF frequency of the HP 8642 and the measuring receiver to those listed in the following table 8642 FREQ Measuring Receiver Frequency MHz 0 1 0 3 1 0 3 0 10 0 30 0 100 0 200 0 300 0 400 0 500 0 600 0 700 0 800 0 900 0 1000 0 2000 0 ...

Page 240: ...642 AMPTD dBm 18 9 9 5 0 10 20 Results watts Min 50 12E 03 7 762E 03 2 510E 03 794 3E 06 79 43E 06 7 943E 06 Actual Max 79 43E 03 12 30E 03 3 981 E 03 1 259E 03 125 9E 06 12 59E 06 6 Level Accuracy On the HP 8642 key in SPCL 0 to disable the HET band Set the HP 8642 and the measuring receiver to the values given in the table below At all 0 dBm amplitude settings change measuring receiver measureme...

Page 241: ...NED RF TUNED RF TUNED RF TUNED RF Results watts Min 79 43E 03 7 762E 03 2 510E 03 0 794E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43E 12 7 943E 12 794 3E 15 79 43E 15 7 943E 15 794 3E 18 158 5E 18 79 43E 03 7 762E 03 2 510E 03 794 3E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43E 12 7 943E 12 794 3E 15 79 43E 15 7 943E 15 794 3E 18 158 5E 18 Actual M...

Page 242: ...RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF Results watts Min 79 43E 03 7 762E 03 2 510E 03 794 3E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43E 12 7 943E 12 794 3E 15 79 43E 15 7 943E 15 794 3E 18 158 5E 18 63 09E 03 50 12E 03 7 762E 03 2 510E 03 794 3E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43E 12 7 943E 12 794 3E ...

Page 243: ...UNED RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF TUNED RF RF POWER RF POWER RF POWER RF POWER RF POWER RF POWER Results watts Min 39 81 E 03 31 62E 03 7 762E 03 2 510E 03 794 3E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43E 12 7 943E 12 794 3E 15 79 43E 15 7 943E 15 794 3E 18 158 5E 18 31 62E 03 794 3E 06 79 43E 06 7 943E 06 794 3E 09 79 43E 09 7 943E 09 794 3E 12 79 43...

Page 244: ... Test automatically does this For troubleshooting purposes or characterization of other RF frequencies a spectrum analyzer may be used n a n a o o I a a DD DC I I nnc3DO 5DD a O In a o HP 8642A B SYNTHESIZED SIGNAL GENERATOR 10 MHz OUTPUT JRF I OUTPUT BEF EXT INPUT SENSOR MODULE MEASURING RECEIVER RF INPUT Figure 4 2 Harmonics Test Setup EQUIPMENT Measuring Receiver HP8902A Sensor Module HP11722A ...

Page 245: ...to the values in the following table Set the measuring receiver to the frequencies in the third column Verify the level is below the specified minimum HP 8642 AMPTD dBm 14 0 14 0 14 0 14 0 10 0 14 0 14 0 HP 8642 FREQ MHz 1 000000 1 500000 166 666667 250 000000 2000 000000 500 000000 333 333333 Harmonic Sub Harmonic MHz 3 02 3 02 500 05 500 0 1000 06 1000 0 1000 0 Results Min 25 12E 06 25 12E 06 25...

Page 246: ... D D g O i t HP 8642A B SYNTHESIZED SIGNAL GENERATOR 10 UHz OUTPUT RF OUTPUT REF EXT INPUT MEASURING RECEIVER SENSOR MODULE RF INPUT Figure 4 3 Pulse Test Setup EQUIPMENT Measuring Receiver HP 8902A Sensor Module HP 11722A PROCEDURE la Setup Connect the instruments as shown in Figure 4 3 Preset the instruments Set the measuring receiver to tuned RF Level mode If the Level Accuracy Performance Test...

Page 247: ... 10 dBm SHIFT PULSE ON OFF EXT DC This will put the HP 8642 in pulse modulation mode with the modulation waveform in its off state Put the measuring receiver in Tuned RF Level Mode Set the HP 8642 and measuring receiver frequency to the values listed in the table below Verify the readings are lower than the specified maximum RF Frequency MHz 1000 06 1300 07 Results Actual Max 10 00E 6 W 316 2E 9 W...

Page 248: ... are measured in areas where the measuring receiver can resolve the measured performance of the HP 8642 under test in a 0 3 3 kHz Bandwidth If the HP 8642 has been repaired the OPTIONAL RESIDUAL FM TEST 4 18 should be performed in addition to this test Also if the Residual FM Test fails it will be necessary to run 4 18 at the test points given here in 4 8 to determine if the noise source is the me...

Page 249: ...that the measuring receiver reading is less than the specified maximum ill 18 18 18 5 5 5 8642 FREQ 1 MHz 1 GHz 1 3 GHz1 1 MHz 1 GHz 1 3 GHz1 Results Actual Max 0 010 0 010 0 010 0 010 0 010 0 010 1 8642B only 3 Residual FM Put the measuring receiver in FM mode and leave the rms detector enabled Set the HP 8642 to the levels and frequencies in the following table and verify that the measuring rece...

Page 250: ...ading 1 AM 5 of setting 1 AM 8642A Bands 1 8 Band 9 HET 1 2 2 4 4 6 8642B Bands 1 9 Band 10 HET 1 2 2 4 4 6 dc to 200 kHz 20 Hz to 200 kHz 20 Hz to 100 kHz The smaller of 3 MHz or fmod X 2160 1 5 MHz or fmod x 1080 750 kHz or fmod X 540 375 kHz or fmod x 270 187 kHz or fmod X 135 93 8 kHz or fmod X 67 5 46 9 kHz or fmoa X 33 75 23 4 kHz or fmod X 16 88 11 7 kHz or fmod X 8 44 93 8 kHz or fmod x 67...

Page 251: ...z 375 kHz 187 kHz 93 8 kHz 46 9 kHz 23 4 kHz 11 7 kHz 93 8 kHz 1 5 MHz 5 of reading 10 Hz The larger of 0 7 of setting or 0 0004 of max deviation 0 25 0 4 2 0 4 0 None 500 Hz 1 kHz 200 radians 100 radians 50 radians 25 radians 12 5 radians 6 25 radians 3 13 radians 1 56 radians 0 78 radians 5 of setting 09 rad The larger of 0 75 of setting or 0 0004 of max deviation 0 4 20 Hz to 15 kHz dc to 15 kH...

Page 252: ...2A Sensor Module HP 11722A PROCEDURE Setup 1 Connect the instruments as shown in Figure 4 5 preset the instruments Set the 8642 s output amplitude to 10 0 dBm Set the measuring receiver as follows MEASUREMENT MODE AM DETECTOR PEAK HP FILTER 300 HZ LP FILTER 1 5 kHz FM DE EMPHASIS OFF 2 AM Indicator Accuracy Set the HP 8642 AM to 90 Set the HP 8642 frequency to the values in the table below and ver...

Page 253: ...its HP 8642 FREQ MHz 8 0000 1300 0 Results Actual Max 0 20 rad 0 20 rad 4 AM Distortion Set the measuring receiver back to AM then to audio distortion mode Set the HP 8642 RF frequency and AM depth to the values listed in the table below and verify that the measuring receiver readings are within the specified limits HP 8642 FREQ MHz 0 15 0 15 0 15 10501 10501 10501 13002 13002 13002 500 500 500 AM...

Page 254: ...e and verify that the distortion reading does not exceed maximum Repeat phase deviation and distortion tests for the remaining HP 8642 settings FREQ MHz 8 00 1050 0 15 PM rad 0 781 100 0 100 0 Results PM Min 0 651 94 9 94 9 Actual Max 0 909 rad 105 1 rad 105 1 rad Distortion Actual Max 0 4 0 4 0 4 DC FM Center Frequency Preset the instruments On the HP 8642 key in AMPT 10 dB FM 180 kHz EXT DC On t...

Page 255: ... kHz 26 3 kHz 196 4 kHz 393 8 kHz 0 830 kHz 6 15 kHz 12 3 kHz 98 5 kHz 8 Incidental AM Set the HP 8642 frequency to 400 0 kHz and turn off the FM Set the measuring receiver to AM mode with 300 Hz high pass filter 15 kHz low pass filter and the PEAK detector selected The measuring receiver s reading must be less than 20 If the reading is too high it means the residual AM of the measuring receiver o...

Page 256: ...d audio distortion mode Turn off all audio Filters Set the HP 8642 amplitude to 10 dBm Set the HP 8642 RF frequency and FM deviation to the values listed in the table below Verify that the measuring receiver readings are less than the specified maximum FREQ MHz 1050 256 4 FM kHz 72 0 135 0 67 5 Results Actual Distortion Max 0 4 2 0 4 0 ...

Page 257: ...asuring receiver The modulation output of the measuring receiver is then fed into the input of an audio analyzer and measured AUDIO ANALYZER D D D D D D D a n D D D DD D D D D D O DDD DD D D D D D O o HP 8642A B SYNTHESIZED SIGNAL GENERATOR 10 MHZ OUTPUT RF OUTPUT REF EXT INPUT SENSOR MODULE MODULATION OUTPUT MEASURING RECEIVER RF INPUT EQUIPMENT PROCEDURE Figure 4 6 FM Distortion Test Setup Measu...

Page 258: ...L OFF LP FILTER ALL OFF FM Distortion Measurement Set the HP 8642 to the modulation frequency RF frequency and FM deviation given in the table below Verify that the distortion readings on the audio analyzer are less than the specified maximums given in the table below MOD FREQ kHz 0 02 100 100 100 100 10 10 10 10 FREQ MHz 8 1050 256 256 256 8 8 8 4 FM kHz 1 35 100 0 25 0 187 0 375 0 0 781 5 85 11 ...

Page 259: ... ohms 10 Conditions 600 ohm load within 1 second 0 02 15 8 kHz 15 8 kHz DESCRIPTION All Internal Modulation Oscillator specifications are checked by measuring the specified parameters on an audio analyzer HP 8642A B SYNTHESIZED SIGNAL GENERATOR D D a n a a OO n a p a a a DDDD DDDD I n a a a Ofo 600 OHM FEEDTHROUGH TERMINATION AUDIO ANALYZER I Figure 4 7 Internal Modulation Oscillator Test Setup EQ...

Page 260: ...kHz 1 000 kHz 100 0 kHz 0 020 kHz 1 000 kHz 100 0 kHz MOD OUT Level 50 mV 50 mV 50 mV 3 00V 3 00V 3 00V Results Min 46 6 mV 46 6 mV 46 6 mV 4 051V 4 051V 4 051V Actual Max 94 8 mV 94 8 mV 94 8 mV 4 433V 4 433V 4 433V Use the audio analyzer 30 kHz low pass filter at these points 3 Frequency Accuracy Set the HP 8642 modulation frequency to the values given in the table below and verify that the freq...

Page 261: ...0 0 kHz 0 020 kHz 15 80 kHz 100 0 kHz MOD OUT Level 0 50V 0 50V 0 50V 3 00V 3 00V 3 00V Results Actual Max 0 02 0 02 0 15 0 02 0 02 0 15 5 Output Impedance Set the HP 8642 MOD FREQ to 1 kHz Set the audio analyzer to AC level and ratio Terminate the HP 8642 MOD OUTPUT with the 600 ohm F16 4 7 feedthrough and re connect the cable Verify that the audio analyzer reading is within the specified limits ...

Page 262: ... these two values In the Low Level SWR Test the return loss is measured at each attenuator step for worst case frequencies Return loss is measured by first measuring the power that will be applied to the HP 8642 RF Output This is done through the SWR bridge to calibrate out the loss of the bridge Then the HP 8642 is connected to the SWR bridge and the reflected power is measured The difference bet...

Page 263: ...rator to the frequency listed in the table below Set the Signal Generator level to 80 dBm Set the HP 8642 level listed in the table below Make a reading on the measuring receiver and record it in the table below Step 2a Reading Repeat this step for all frequencies in the table 2b Connect the instruments as shown in Figure 4 8 step 2b Set the Signal Generator level for 6 dB higher than the HP 8642 ...

Page 264: ... change Record the maximum and minimum readings on the measuring receiver display in the table below 3b Subtract the Maximum from the Minimum reading in Step 3a and record the Result in the table below Verify that the actual result is less than the specified Maximum Frequency MHz 4 000 4 000 4 000 4 000 1000 000 1000 000 1000 000 1000 000 2000 000 2000 000 2000 000 2000 000 HI 10 0 6 0 1 0 6 0 10 ...

Page 265: ...table Measure the Ref at all settings and record each reading under Intermediate Readings Ref 6 Low Level SWR Reflection Connect the instruments as shown in Figure 4 8 step 2a Put the measuring receiver in RF POWER mode Set the Signal Generator and measuring receiver frequency to values listed in the table below Set the HP 8642 to the levels listed in the table Measure the reflected power at all s...

Page 266: ...ing table compute the Actual return loss using the following formula Ref Reflected Actual Verify that Actual is greater than the specified Min NOTE If you wish to compute the actual SWR from the return loss at each frequency you may use the following formula J _ M Q Return Losa 20 1 SWR 1 _ M Q Retum Loss 20 1 4 34 ...

Page 267: ...ly to be observed a D I D a n D D a n o n n o n a D P a a n n a n O O n a a a a n n v OO 10 MHz OUTPUT RF OUTPUT EXTERNAL REFERENCE RF INPUT SPECTRUM ANALYZER HP 8642A B SYNTHESIZED SIGNAL GENERATOR EQUIPMENT PROCEDURE Figure 4 9 Harmonics and Spurious Test Setup Spectrum Analyzer HP 8566A 1 Perform a center frequency calibration on the spectrum analyzer 2 Connect the instruments as shown in Figur...

Page 268: ...he 8642 s signal it is probably gentrated in the spectrum analyzer 8642 AMPTD dBm 20 20 20 20 20 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 FREQ MHz 4 130 000 4 130 000 4 130 000 4 130 000 4 130 000 4 130 000 4 130 000 90 000 000 600 000 000 600 000 000 571 144 000 610 519 000 745 951 000 775 184 000 780 184 000 797 878 000 965 416 000 1012 000 000 976 000 000 562 000 000 1057 500 000 1057 500 000 563 00...

Page 269: ...spectrum analyzer The intermodulation products are then measured on the spectrum analyzer C DD D D D D D D n n p p n f A flF OUTPUT RF INPUT HP 8642A B SYNTHESIZED SIGNAL GENERATOR SPECTRUM ANALYZER POWER SPLITTER 6dB PAD IRF I OUTPUT SIGNAL GENERATOR EQUIPMENT PROCEDURE Figure 4 10 Intermodulation Test Setup Spectrum Analyzer HP 8566B Power Splitter HP 11667A Signal Generator HP 8642B 6 dB Pad HP...

Page 270: ...UMENT PRESET 5 Adjust the Signal Generator level until it is equal to the HP 8642 level using the spectrum analyzer as the measuring device 6 On the spectrum analyzer measure the signal at 1049 975 MHz relative to the signal at 1050 000 MHz Verify that it is below the required level given below 8642 RF Frequency MHz 1050 000 Signal Generator Frequency MHz 1050 025 Results Actual Max 55 dBc ...

Page 271: ...put of the HP 8642 and its 10 MHz reference signal in a double balanced mixer to eliminate the carrier and translate the noise spectrum down to a low frequency where it can be viewed on a high resolution spectrum analyzer The 10 MHz reference output from the HP 8642 s rear panel is used as the LO input for the mixer The HP 8642 s output is set to 10 MHz and is used as the RF input to the mixer The...

Page 272: ...ROCEDURE Connect the instruments as shown in Figure 4 11 Preset the instruments Insure that the spectrum analyzer center frequency calibration is accruate On the HP 8642 enter SPCL 8 Set the HP 8642 to 10 020 MHz and 50 dBm amplitude Set up the Spectrum Analyzer as follows VIDEO BW SWEEP TIME ATTENUATION RESOLUTION CENTER FREQ SPAN REFERENCE LEVEL 1Hz 5 0 sec OdB 10 Hz 20 kHz 0 Hz 50 dBm NOTE It m...

Page 273: ...knob to adjust the dc level on the oscilloscope as close to zero as possible This sets the two input signals to the mixer in phase quadrature 90 degrees out of phase 7 View the trace and note the average noise level 8 The actual phase noise is calculated from the reading obtained in step 6 by applying the following corrections a Subtract the reading from step 4 to convert the reading to units of d...

Page 274: ...8 dBc 137 dBc Conditions band 10 9 8 7 6 5 4 3 2 1 HET DESCRIPTION This test is an alternative to the test in paragraph 4 1 5 This test should be performed only if it is necessary to check phase noise at frequencies other than 10 MHz An LO and a double balanced mixer are used to translate the noise spectrum to a lower frequency so that it can be viewed on a high resolution spectrum analyzer NOTE T...

Page 275: ...ower Supply HP 6216A Spectrum Analyzer HP 8566A Oscilloscope HP 1980B LO HP 8642B PROCEDURE 1 Connect the instruments as shown in Figure 4 12 On the LO select external DC FM and 1 kHz FM deviation Insure that the spectrum analyzer center frequency calibration is accurate NOTE The following symbols are used in the procedure fgp the RF output frequency where SSB phase noise will be checked OFF the f...

Page 276: ...hile tuning the center frequency adjustment 5 Set the HP 8642 to Fj p then 0 dBm amplitude by incrementing the amplitude in 10 dB steps CAUTION Use the oscilloscope to verify that no large AC signal is present If AC is present the mixer input signals are not at the same frequency and spectrum analyzer damage may result 6 On the HP 8642 enter SPCL 250 View the signal in the dc coupled mode on the o...

Page 277: ...ned in step 6 by applying the following corrections a Subtract the reading from step 4 to convert the reading to units of dBc b Add 63 5 dB 50 dB for 8642 attenuator change 10 dB for 1 Hz bandwidth normalization 6 dB for single side band conversion 2 5 dB to correct for the Log shaping and average detection 4 45 ...

Page 278: ...ue DESCRIPTION All Pulse specifications are checked by measuring the specified parameters on an oscilloscope after the waveform has been demodulated by a spectrum analyzer HP 8642A B SYNTHESIZED SIQNAL GENERATOR D I la a D an a n a a a a an HP P R H H H o I AM PULSE 1 INPUT OUTPUT FUNCTION GENERATOR RF RF OUTPUT INPUT CHANNEL A SPECTRUM ANALYZER VIDEO OUTPUT CHANNEL B OSCILLOSCOPE EQUIPMENT Figure...

Page 279: ...Offset 1 volt Pulse Width 6 usec Set up the spectrum analyzer as follows Center Frequency 1000 MHz Resolution BW 3 MHz Frequency Span 0 Hz Reference Level 20 dBm Vertical Scale Linear 2 Rise Fall Time Set the HP 8642 RF frequency to 1000 MHz amplitude to 1 3 dBm and turn on external dc pulse modulation The spectrum analyzer trace should cover the display form the bottm of the CRT nearly to the top...

Page 280: ...ould be a broad trace that covers the top half of the screen The top of the trace is the pulse on amplitude and the bottom is the pulse off amplitude determine the difference in level and verify that the value is within the specified limits given in the table below RF Frequency MHz 1000 0 2000 0 Results Min 30 0 45 0 Actual ...

Page 281: ...e that the HP 8642 is passing all its Residual FM specifications However if a measurement bandwidth of 50 Hz to 15 kHz is required an external LO must be provided an 8902A measuring receiver must be equipped with option 003 to allow this The LO must have residual FM lower than or equal to the HP 8642 a 1 D D P D D a n D a n D D D D D r r HP 8642A B SYNTHESIZED SIGNAL GENERATOR SIGNAL GENERATOR 1 R...

Page 282: ...HP Filter and the 15 kHz LP Filter Set the HP 8642 under test to AMPTD 10 dBm and frequencies in the following table Set the measuring receiver to 500 MHz Set the external LO to 1 5 MHz higher than the HP 8642 under test Verify that the measuring receiver reading is less than the specified maximum 8642 AMPTD dBm 10 10 10 10 10 8642 FREQ 10 MHz 250 MHz 0 5 GHz 1 GHz 2 GHz Results kHz Actual Max 0 0...

Page 283: ...d to the oscilloscope s vertical input A frequency standard with long term stability greater than 1 x 10 1U is connected to the trigger input The time required for a specific phase change is measured immediately and after a period of time The aging rate is inversely proportional to the absolute value of the difference in the measured times 10 MHz OUTPUT D I n DO D D D D D a aa O D D a o iziannp a ...

Page 284: ...e required for a phase change of 360 degrees Record the time Tl in seconds Tl s 5 Wait for a period of time from 3 to 24 hours and re measure the phase change time T2 Record the period of time betwen measurements T3 in hours T2 g T3 h 6 Calculate the aging rate from the following equation Agi g _L _ JL_ JL_ where 1 cycle the phase change reference for the time measurement in this case 360 degrees ...

Page 285: ...erence oscillator are extremely close the measurement time in steps 4 and 5 T1 and T2 can be reduced by measuring the time required for a phase change of something less than 360 degrees Change 1 cycle in the formula e g 180 degrees 1 2 cycle 90 degrees 1 4 cycle 8 If the rate aging is not within the required tolerance check the power supplies before replacing A8A3 Be sure sufficient warm up time h...

Page 286: ... of Contents Adjustments 5 2 Auto Adjust Routines 5 2 Description 5 2 How All Auto Adjust Procedures Begin 5 3 Correction Data Special Functions 5 5 Identifying the Contents of A20 5 5 Identifying the Contents of A3 5 7 Interpreting Cal Data Stats 5 8 5 1 ...

Page 287: ...The Cal Data is stored in EEPROM on the A3 board and is used to control the modules during instrument operation A back up copy of the Cal Data is stored in EEPROM on the A20 board which is located under MP 65 on the rear panel The Auto Adjust routines control external measurement equipment via HP IB for the purpose of regenerating A2 A6 All A12 A13 and A14 module correction data after a component ...

Page 288: ...in SHIFT SPCL 3 to enter Service Mode 6 Key in 8 8 Hz to make the HP 8642 a system controller 7 Key in 81 0 Hz to initiate the Auto Adjust mode A BIG HOWDY FROM HP GO and WELCOME TO SELF CAL G1 will appear on the display momentarily From now on the Back Space key when used during a data entry prompt will abort the Auto Adjust Routine 8 ENTER ROUTINE NUM G8000 will prompt you to key in one of the r...

Page 289: ...eft hand side of the A2 board you will see a label with a number similar to 2412A 31458 So you would enter 3 Q 4 5 jj Hz for the Module Cal ID number 13 Now the printer should respond by printing out the statistics of the module See Figure 5 1 All the information on the print out has been discussed previously except the Calibration Method number which will be discussed in Interpreting Cal Data Sta...

Page 290: ...lid Cal Data will now be displayed Some examples of the HP 8642 display are shown below Refer to Table 5 4 to cross reference the A20 addresses Module ID Numbers to the Memory Contents A20 containing HP 8642A Cal Data Backup VALID CAL 01234 6 8 9 U619 VALID CAL 567 U619 A20 containing HP 8642B Cal Data Backup VALID CAL 01 2 345 6789 AJ619 A20 provided with Al9 exchange module A20 provided with A6 ...

Page 291: ...Doubler Stats A16 or A19 Attenuator Stats A19 Rev Pwr Protect Stats A14 Stats A2 Stats Service Special Function 45 Hz 46 Hz 47 Hz 111 Hz 112 Hz 113 Hz 114 Hz 115 Hz 116 Hz 117 Hz 118 Hz 119 Hz 7 If you wish to determine which data is the same between the A20 and the A3 key in 4 4 Hz Some examples of the HP 8642 display are A20 with A19 exchange module before data down load CAL SAME U617 A20 with A...

Page 292: ...ss reference the A3 addresses Module ID Numbers to the Memory Contents New A3 before down loading back up data from A20 VALID CAL 0 U619 Functional HP 8642A VALID CAL 01 234 6 8 9 U619 Functional HP 8642B VALID CAL 0123456789 U619 3 Use the key sequence in Table 5 6 to display the cal data stats for the module s you are interested in See Interpreting Cal Data Stats later in this section Table 5 6 ...

Page 293: ...is shown in the form month date year MM DD YY The right most field is the five digii Cal ID Number which will conform to the last five digits of the serial number like designator i e 2412A 31458 that is on each module The following are some examples of the Stats Display on the HP 8642 09 STAT 9995 02 30 84 31458 A2 Cal Data Stats are Data generated using the built in A2 Auto Adjust Routine Febru a...

Page 294: ...ent page number will always be the same as the number on the page it is meant to replace r r For example if this packet contained a page rev l4JUN84 2 11 you would remove and discard the existing page 2 11 from your manual and replace it with a new page from this packet NOTE There may be a revision date on the ex isting page in the manual replace it only after making sure that the Replacement page...

Page 295: ...okane Division Technical Writing Department 24001 E Mission TAF C 34 Spokane WA 99220 509 922 4001 NOTE Use the Documentation Update Service reply card to promptly notify us of any changes or corrections to your mailing information To avoid receiving duplicate packets be sure to mark the Name Address Cor rection Only box on the reply card if applicable If you subscribe to the Documentation Update ...

Page 296: ... of setting 1 AM 5 of setting 1 AM 8642A Bands 1 8 HET 8642B Bands 1 9 1 2 4 8642A Band 9 HET 8642B Band 10 HET 2 4 6 dc to 100 kHz 20 Hz to 100 kHz dc to 20 kHz 20 Hz to 20 kHz 0 2 radians peak bands by using Special Function 8 prefer HET t Conditions Output level 10 dBm 8642A Bands 1 8 HET 8642B Bands 1 9 HET 8642A Band 9 8642B Band 10 0 to 30 AM 30 to 70 AM 70 to 90 AM 0 to 30 AM 30 to 70 AM 70...

Page 297: ...ystrokes SPCL I SHIFT I I 1 CXI 2 After you enter the service mode you can select the service special function number followed by the 1 HZ UV terminator The instrument only knows you have selected a special function when you key in the I HZ UV I terminator To list Model number of the instrument SPCL I SHIFT I m G D CXI G D 1 HZ UV 1 Serial number of the instrument SPCL I SHIFT 1 m G D G D G D I HZ...

Page 298: ......

Page 299: ...ocurd LCX ...

Page 300: ...N STB SWITCH 30 LCD SERIAL r IN DATA LCD DRIVER r INPUTS SS1 11 LCD PULLUPS HP IB SWITCHES RPG SS2 SS SERVICE SHEET 14 LCD DISPLAY LCD DRIVERS SS3 A1A2 KEY BOARD MATHIX LINES HP IB SWITCH OUTPUTS 49 RPG OIR 50 RPG CHANGE Figure 8 E 1 0 0 B D 2 General I n f o r m a t i o n ...

Page 301: ...Service fT 6 H t 0 Model 8642A B kJt j Module Test Point Adjustment Locations 8E 100 ...

Page 302: ...f G E f l A1A1 KEYBOARD ASSEMBLY 06642 60122 BD17 d ...

Page 303: ...4 COL A R O W t R O W f ROW f ROW ROH RDM ROH E HDH f 14 t 6 SS1 RESET 1 R P G L 1 BD4 r D 35 P O J i _ I 1 3 l i i 1 1 1 _ _ Ml J 1 LCD CLOCK _n_n_ KEY XI X2 X3 MB B 4 2 M s t RPG LATCHES A 15 SCKlt CS Al C H RESET LCD t DISP LIGHT LI SHI LIGHT 4 SION SI1 H sistii r s i 3 il SI4 SI5 It RPG 10 SI6U SI7 h SI9 J 5110 5V fl G N O j SS2 ...

Page 304: ... SWITCH OUTPUTS QD BD4 GD i G_ fsn i GD GD i DISP BUSY L FH5BD4 LCD LIGHTING S I 0 S I 5 9 10 4 H GD P 0 M S RPG CHANGE L RPG DIP GDB D 4 RPG CHANGE L 5DBD3 4 10 516 H SI7 H SIB H 518 H 1 6 SI10 1H 5V F2 LCD GND 1 LCD S I 6 S I 1 0 SS2 M l POHER SUPPLY AND GND LCD BUSY ID A1A2 LCD DISPLAY ASSEM 7 1 5 2 B 7 B 9 1 P 0 P2 L I G H T S P 0 PI LIGHT COM LIGHT 1 P 0 P2 LCD 4 6 SCK L CS ALL D P 0 PI 2 3 C...

Page 305: ...N R SECTION C 4 6 SCK L CS ALL L P 0 Pi 2 3 C H PIL 32 32 32 32 32 32 32 RESET LCD LI P 0 P2 2 LCD CLK P 0 PI Z 6 7 8 g 10 ii ii 10 9 8 5 SIO H SIl H T SI2 H r SI3 1H S H H SI5 tH LCD DRIVERS V y SECTION R RIGHT DRIVERS y v SECTION C CENTER DRIVERS y P 0 P2 516 H SI7 H J SIB 1 SKHH 1 SI 10 H 1 5V1F1 1 GND L POWER SUPPLY AND GND ...

Page 306: ...pic g 0 1 SECTION C 32 2 SECTION OR 32 33 4 C CENTER IVERS SECTION L t 32 32 SECTIO D 32 2 32 P O 1 LCD J f BUSY L 7 N L LEFT RIVERS o ...

Page 307: ...TP3 S3B 539 TP6 TP2 Figure 8E 102 SERVICE SHEET 1 INFORMATION Comp ...

Page 308: ... r U17 A1A2 S8 Rli R13 S9 S10 sii S12 513 rftin S14 S15 S21 522 S23 S24 525 S26 S29 530 S3 S32 S33 S34 S39 S40 541 S42 S43 S44 Component Locator ...

Page 309: ...SU 3 A1A2 S4 J5 Sli S24 S32 S42 SIS S25 S33 S43 S13 S2B S34 S44 ram S14 SIS U20 U19 U15 1 0 o S16 S27 I J3 I S4S S17 A1A1 ...

Page 310: ...ck Diagram Component Coord i nates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y J l RIO SI S2 S3 34 S5 S6 S7 SB S3 SIO Sil sia S13 S14 515 S16 S17 S18 S19 S20 521 S22 S23 S24 S25 S26 S27 S2B S29 S30 S31 S32 S33 A 2 A 2 B 2 B S B 2 B 2 C 2 C 2 C 2 C 2 C 2 8 3 B 3 B 3 C 3 C 3 C 3 C 3 0 2 B 3 B 3 B 3 C 3 C 3 C 3 S34 S35 S36 S37 S38 S39 540 S41 S42 S43 S44 S46 TP1 T...

Page 311: ...dule note any changes that apply specifically to its nodule configuration code 2 A H circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 3 Hi and W2 are black wire jumpers A1A1 S46 CIRCUIT SIDE TOP VIEW H2 Wi 4 5 6 1 2 3 L r Schematic General Information 8E 102 ...

Page 312: ...KEYBOARD C O L O y HOW A POWER SUPPLY AND GROUND r NOTE 3 Wl H2 NOTE 3 NOTE 3 546 ID 7 COL 0 PPH 5 i i COL 0 g now o S18 STOP FREQ Cpl P ROM 7 S35 a INT COL 0 HOW 3 SWEEP 7 MODULATION SOURCE S36 1 5_c UL EXT AC 9 1 v Ml JOW 1 POWER SUPPLY AND QND 5V Fi POWER SUPPLY AND END ST OP AMPT EXT DC SERIAL PREFIX Z 7A ...

Page 313: ... S37 EXT OC s 5 COL 5 A o fifiiU ENTRY S7 a j FBEQ 1 COL g A r t B H S20 AM COL 3 T BPJLM S28 a MOO FP EQ d COL 4 Row g H S3B I OFF ON _ 5 QL_Ay r m g 7 SB a AMPTD COL 2 A g ROW 3 S21 I FM J V C O L 3 A ir 7 ROW 3 S29 I INCR SET COL A A r 5 BOW 3 y S39 SEG s r1 HOW 3 BACK SP S3 a SAVE S40 a RECALL POKER SUPPLY AND 8ND S 2 ...

Page 314: ...if Rpw I _ S10 a COL g A 7 DATA R O W 5 S23 COL 3 yj r5 HQ 5 S31 COL 4 A R O W 5 I S41 P COL 5yf ROW 5 Sil i COL 5 A ROW 6 A S24 r ROW 6 S32 9 CDL 4 ROW 6 A S42 r ROW 6 ...

Page 315: ... CQL M 7 Row e 7 S12 S i t C 0 1 M 5 ROW 7 j S25 r g ROW 7 y S33 a IT g COL 4 ROW 7 S43 rad 1 COL 5 ROM 7 S13 a GHz dBen g C0L M 7 ROW Q y j S26 J MHz V r 7 ROW o kHz ov S34 5 CQl 4 Row o f S44 a H2 uv COL 5 ROW 0 y KNOB S14 3D i r r g COL 1 f 5 BOW o ATTENTION Static Sensitive Devices S15 a L K B ...

Page 316: ...IO 10k BOH 4 RQH 3 v now 2 _flflH_L ROW 0 COL 0 COl 1 v COL 2 v CQL 3 s COL 4 COL 5 ION si five s 15 10 i i 13 12 11 14 16 5 V F i COL 0 COL S U 6 R V 2 p a CQL q II i COL 1 V OPi g PQL 3 PQL 4 cgL s ROW 0 R O W 1 RQW ROM 3 ROW 4 ROW S ROW 6 P Q W 7 41 CO Th 31 3 4 j g H 42 43 J 44 W Q 33 45 J 32 39 40 H 37 38 36 KEYBOARD MATRIX LINES W D9 re F i g u r e SS1 8E 103 8E 103 ...

Page 317: ...TP3 mi R13 R14 Cl U17 S S 5 Figure 8E 104 SERVICE SHEET 2 INFORMATION Co ...

Page 318: ... L S U17 A1A2 O R17 U20 SB nii R13 R14 59 S10 Sll S12 S13 314 515 U19 S21 522 323 S24 S25 S26 U15 S29 S30 S31 S32 S33 S34 J3 S39 S40 S41 S42 S43 S44 A1 Component Locator ...

Page 319: ...ci C2 C5 C7 CB e g JI J3 J4 J5 LI Ql Q2 Rl R2 R5 R6 R7 RB R9 RIO Rll R13 R14 R15 R16 R17 S45 S47 X Y Q 2 A 3 0 2 A 2 A 2 A 2 A 2 D 3 A 1 D 1 A 2 B 2 B 2 A 2 A 2 B 2 B 2 A 2 A 1 A 2 A 2 B 2 B 2 B 2 B 2 B 2 D 2 0 2 A 1 COMP TP2 TP3 TP4 TP6 U13 U14 U15 UiB U17 U19 U20 X Y A 3 A 1 A 3 A 3 A 2 A 2 D 2 A 2 a 3 D 2 0 2 COMP X ...

Page 320: ...E SS2 SS SERVICE SHEET Reference Block Di agram Component Coordinates COMP ci C2 C5 C7 CB C9 Jl J3 J4 J5 LI 01 02 Rl R2 R5 R6 R7 RS H9 RIO R l l R13 R14 R15 RIB R17 S45 S47 X Y B 2 A 3 D 2 A 2 A 2 A 2 A 2 D 3 A 1 0 1 A 2 9 2 a a A A A A B B B B B 2 o a D 2 A 1 COMP TP2 TP3 TP4 TP6 U13 U14 U15 U16 U17 U19 U20 X Y A 3 A 1 A 3 A 3 COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y ...

Page 321: ...ra care when replacing components Refer to Seneral service Information paragraph 8 3 3 S4S has aechenically selectable switches You select switches by changing the position of the arrow on the end of S4S The arrow points to a hexadeciaal coded nuaber This nuaber when converted to binary code will indicate binary weighted switch positions See S45 diagraa below A1A1 S45 COMPONENT SIDE END VIEW SWITC...

Page 322: ...H 513 H I SI 4 H SI5 H SI6 H SI7 IH SIB 519 H 3110 H CSALL L C H D ID C RESET LCD ID 5CK L 12 13 14 15 11 BUSY ID LCD LIGHT ON 11 CE LI6HT ID HP IB SWITCHES 5V1F1 16 R8 10k HP IB SWITCH S47_ e 10 l i 12 13 JLL l POWER SUPPLY AND GNO 5V 55 GD iGE POWER SUPPLY AND QND tsvin L l 92 u 25 L C2 J 1 IOOUT rr 5V F1 5V F2 5V F2 LCDS X SND 1 LCD N 5V SND SERIAL PREFIX S427A ...

Page 323: ......

Page 324: ...I or i 5V Fi ft X s 16 R RX CX CX RX CX CX 13 NC NC NC 12 15 P 0 S4S NOTE 3 5V F1 U19_fc 10 Ci R AhS 12 11 13j 10 T XC5 Jo in NC NC R6 1780 R16 Ik w 15 R5 1780 J 02 5V r A21 HPQ 5V ROTARY SHUTTER RESET RPG L 11 u A1A1 I p 0 Jl 35 J 5V VJ O 5V 5V 1 P 0 J3 RPQ LATCHES 5V F1 5V F1 R17 19 6k 11 ns ...

Page 325: ......

Page 326: ...GHT CON LIGHT 2 P 0 J4 RPG DIP P 0 RPG CHANGE L C H D ID P 0 J5 RESET LCD LI SIO IH J1L SlgjH S 1H SI4 Hi SI51H P 0 SISIH SI7 IH S I B IH SI9tH SI 10 H r SCK L r CSALL L GND 1 LCD 5V Fg LCD LCDCLK 3 _ C O OISP I 5 O T I BUSY L 50 I t o l I O C O l H P S CHANGE L c o U Q Q g I I C H D L 2 QE 3 RESET LCD L GD3 3 SIO SIS y 4 GD 3 T 8 SI6 SI10 1D3 SCK L S G 3 6 CS ALL L S H 3 POKER SUPPLY GROUND 11 1 ...

Page 327: ...cSAJ TPi PI U5 Figure 8E 106 SERVICE SHEET 3 INFORMATION ...

Page 328: ...fcT C fc A1A2 Component Locator ...

Page 329: ...TP2 TP3 cf 92 A1A2 KEYBOARD A1A1 J l 0N ST9 3 0 SNITCH d 0 LCD SERIAL IN DATA LCD DRXVEH INPUTS 11 LCD PULLUPS HP IB SWITCHES SS SERVICE SHEET COMP X Y COMP X Y COMP X ...

Page 330: ...LINES y l i W i l LCD SERIAL IN DATA LCD DRIVER INPUTS 11 LCD PULLUPS ICO DRIVERS SS3 HP IB SWITCHES RPG HP IB SWITCH OUTPUTS 49 RPG DIR 50 RPG CHANGE SS2 SS SERVICE SHEET Reference Block Di agram Component Coordinates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP XtY COMP X Y COMP X Y ...

Page 331: ...nodule configuration code When servicing a module note any changea that apply specifically to its module configuration code 2 All circuit boards ars manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph fl 3 Schematic General information 8E 106 ...

Page 332: ...8642 60121 P 0 2 LITE 2 P O Pi H LITE COM 1 LITE 1 P O P2 T 6 P O PJ H I IP O P2 B P O PI i SIO H 7 I SJ1 H a S I 3 I H 10 S14 H 5J5 H I P O P2 t SI6 H I SI7 H I SI8 H SI3 H SI10 H 3 I 5VIF1 LCD DRIVERS 8 S2 LCD AND LIGHTS U1 JU 5V F2 3 7 33 SCK CS LCD CONTROLLED DRIVER BUSY 7225 11 32 TP1 10 i POWER SUPPLY AND GND J 5VIF2 i G N D is iU L J SERIAL PREFIX 2427 ...

Page 333: ... PINS 1 AND 354 ARE COMMON BACKPLANE 32 32 32 32 TP1 32 V 10 12 13i 52 NC 5VIF2 33 ZL 11 NC 32 NC 19 32 y 34 51 14 X 4 5 6 30 12 _13 52 NC 5V F2 3 11 NC 32 NC 19 32 y 34 51 14 4 5 B 5V F2 U4JJ3 7 10 1 12 Oh 52 NC HNC 2 n SI 17 NC Jfij fa J 19 y 32 34 y 51 NC 14 X 4 5 5 NC ...

Page 334: ...V F2 usjcjk7 1 0 K 12 13i 52 NC w 11 NC NC 15 16 JJ HC 19 H 32 1 1 _ 51 32 14 X 4 5 B 101 12 _13L 52 NC 5V F2 U6 3 7 11 NC TP2 T 15 izUc IB C 32 NC 1 19 y 32 34 y 51 14 X 4 5 6 z 5V C2 J T U7 F2 10 12 _l_3j 52 NC 3 7 3 3 11 NC 1 C 15 16 IB 19 1 32 32 21 51 14 NC o ATTENTION Static Sensitive Devices ...

Page 335: ... 52 11 NC 3 r 15 il il NC IB 19 A 32 32 y 21 S 51 NC 14 4 5 B 5 V F 2 U8 JW iOi 12 ATTENTION Static Sensitive Devices 13 52 NC 11 NC fi 10 NC 15 i l is A 32 32 a i y 51 14 X 4 5 G 12 13 1 52 NC 5V F2 U9 frja7 IL 5V F2 11 NC IOi 15 IB j7 NC Ui 19 A 32 12_ 34 51 I 14 4 5 6 NC V 12 ja 52 NC b C i i NC SI 1 7 N C llj 19 32 34 51 14 NC V ...

Page 336: ... ID V A ID V A ID V A ID V A 10 V A 10 V A ID V A ID V 12 A _0 8191 EN WRITE READ c i XC31 11 OB y 1 2 _ 0 9 J 3 _ p l M 15 Dll H 16 D 1 2 17 D13 J J S _ D 1 M 19 015 EEPROM OUTPUT ENABLE 5 L Z CALIBRATION DATA EEPROMS U20 M i M i Ma KAi M KA6 ML kA9 23 AlO 22 All 19 II WRITE DISABLE 5V F2 S2 P 51 lk U1D UHR 10 U1C HATTERY SENSE LQ_tJ JU 124 EEPRDH 204B X B A 2047 10 Gl 1 C2 Mo 1 EN 3 READ BYTE WR...

Page 337: ... 3 Processor I fUworH Module ...

Page 338: ...FACE MICROPROCESSOR V DATA BUS SS4 DATA BUS BUS AND PERIPHERAL CONTROL C ADDRESS BUS SS5 SS SERVICE SHEET ROM MEMORY ir iF RAM MEMORY RESET AND POWER UP PROTECTION SS6 ADDRESS BUS DATA BUS N S CALIBRATION yiDATA V EEPRDMS SS7 K AD 1 LI ADDRESS NES n DATA BUS OUT Figure 8F 100 BD3 General Information ...

Page 339: ...8F 100 ...

Page 340: ...p 6 ZF IOI SJcf I BPG CHANGE BD4QE LB INT BD4 HP IB BD4 HS 232 INT SERIVCE CONNECT A3 MICROPROCESSOR MEMORY R 0 J3 MODULE 08642 60124 SERIAL PREFIX 2427A ...

Page 341: ...ESSOR INTERRUPT TTL HIGH 1 D8 D15 DATA BUS 5 MHz CLOCK 5 MHZ OSCILLATOR UWR VAL MEM TIMER SEL TIMER ENABLE rV TIMER 5Z T7 L S 7 7 V i rv CLK 7 i4 JUS A1 A53 tr 3 BUS AND PERIPHERAL CONTROL GZy AE AB TIMER AODHESSi DQ D15 A19 A EEPROM OUTPUT ENABLE OE ADDRESS STROBE V DATA BUS DISCONNECT X GDn SS4 GD HE 1 OUJ ADDRESS DECODER ZS ST k DATA BUS D0 DJ5 ...

Page 342: ...IGH 2 TTL HIGH 1 s M5 r_iB A13 15 o iu ru O CD ID J o a o x x x x x inioinui m MEMORY SELECT HB IB SEL TIMER SEL _ _ _ _ _ _ FE ESP tl N lis A A HP IB ADDRESS A1 A3 ERROR PET A20 A22 I z l c 33 en mm 1 1 TO to 23 Z 1 1 1 13 T l JI i o m 0 0 O n 0 O D R0M1 SEL ...

Page 343: ... RAM MEMORY HN EEPROM SEL EEPROM OUTPUT ENA BLE LWfl UWR DATA EEPROMS N EEPROM WE SS7 P PROC STATUS ERROR DET V APPR6SS STRgBg BUS GRANT UNUSED AppHESS DET RESET STATUS DETECTION 4 O POWER SUPPLY AND GND 45V FIJ SNO RUNAWAY RESET DISCONNECT GROUND GD7 xzr PPPFSS R1IS fttT pl S DO D15 E CD V7VHT P f FR RESET C L BD SEL CONTROLLER RESET AND POWER UP PROTECTION CONTROLLER RESET SS6 tnnHFSS BUS A1 A11...

Page 344: ...5 V c 41 A2_ 43 AJ_ 45 AS 42 _QE_ CAL SO SEL P J L 01 02 03 01 05 06 OL OS US 10 OIL D12 013 Oil Q15_ P 0 fc US 42JL 51101 L HQ_ JOAV COM SRQ COM P 0 ATN COM NRPr CPU NOAC CPU I F C COM OUTER SHIELD J4 2 1 20 19 18 17 16 IS 14 26 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 1 6 5 5 3 1 1 3 7 11 15 IB 22 23 BEEPER E SS13 a TO CAL BOARD A20 CAL 80 ADDRESS AND CONTROL SD S13 CAL BOARD DATA CE ssi3...

Page 345: ...MPl BLACK U3B U30 C32 C1B EBB oT LB4T Li U12 P5 Ml CA U10 J2 Jl Figure 8F 102 SERVICE SHEET 4 INFORMATION ...

Page 346: ...j UA U7 HZZK Ul C43 rn t j J U24 M u U26 Component Locator ...

Page 347: ...T Refer ence B i ock D Componen t Coord i na COMP Cl C2 C6 C10 C12 C14 C18 CIS C32 C34 C36 C40 C41 C42 C43 C44 J3 LI MP1 MP2 P5 P8 R2 R6 R12 R13 R26 R39 R40 SI X Y A 3 D 1 A 1 C 3 C 1 A 2 A 3 C 3 A 3 A 3 8 2 A 3 C 3 D 1 C 1 A 3 C 1 A 3 A I 0 1 A 3 D 3 C 3 C 3 D 1 A 2 A 2 C 3 C 3 D 1 COMP U2 U3 U4 UB U7 U9 U10 Ull U16 U30 U31 U38 U39 W4 W5 W6 H7 X Y D 1 C 3 B 1 A 1 B 1 A 1 B 3 C 3 C 3 A 3 C 3 A 3 A...

Page 348: ...mponent Coord i nates COMP C l C3 C6 C10 C12 C14 CIS C19 C32 C34 C36 C40 C41 C42 C43 C44 J3 L i MP1 MP2 P5 PB R2 R6 R12 R13 R26 R39 R40 S i X Y A 3 D i A 1 C 3 C i A 2 A 3 C 3 A 3 A 3 B 2 A 3 C 3 D 1 C 1 A 3 C i A 3 A 1 D 1 A 3 D 3 C 3 C 3 D i A 2 A 2 C 3 C 3 0 i COMP U2 U3 U4 U6 U7 U9 U10 U l l U16 U30 U31 U3B U39 W4 W5 W6 W7 X Y D 1 C 3 a i A 1 a i A 1 B 3 C 3 C 3 A 3 C 3 A 3 A 2 A 3 A 3 A 3 A 3...

Page 349: ...ircuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 3 H4 W7 are 0 ohn resistors 4 All capacitors shown in Power Supply and Gnd are connected between 5V and ground planes They are layed out in strategic locations to reduce undesired signal effects A3 81 COMPONENT SIDE TOP VIEW 10 ...

Page 350: ...Fl to 5V F3 On the Component Locator E 2 Add R52 between U4 and U33 In Component Coordinates RS2 AddR52B l On the schematic R52 In 5 MHz OSCILLATOR add R52 immediately off the output of U4 pin 14 in the series path before the first node In the upper left portion of the schematic change the A3 part number to 0S642 60224 rev 0MAR86 SS4 8F 102 1 ...

Page 351: ... 30 2B _L Ifi8_ P 0 J3 25 POWER SUPPLY r AMD GROUND I 57 G n SIGNAL COMMON 12 CD 3 1 Jo EJ u 47 48 49 50 5 9 13 17 21 26 27 29 31 33 35 37 39 4 1 43 46 19 LB INT h HP IB INTERFACE INTERFACE BUS TRANSCEIVER 5V F1 12 U38 54 i22 EN1 G4 EN2 G5 EN3 a IT h JT 10 b JT tr EN6 1 C32 I f l l J i Jit i V V i 6 V V 6 1 V O l m 3 V V 3 3 V V 3 xr 2 V V 2 JT S V 2 2 J J 2 V 2 2 I 14 _i5_ gQI 13 SRO N7 HB f t JN...

Page 352: ...5 K12_ DI02 y 0103 DI04 y 0105 0106 DI07 y DIOB 0101 3B DI02 37 0103 36 DI04 35 0105 34 0106 33 0107 32 DIOB 31 I CONT REN JFC NDAC NRFD DAV EOI ATN SRQ TRIG TE 0101 0102 0103 04 05 0106 DI07 DIOB GENERAL PURPOSE NTERFACE ADAPTER 9914A 0I WE DBIN RSO RSI RS2 CE CLK INT RESET ACCRO ACCGR DO Dl 02 D3 D4 D5 05 D7 I L TRA U Al A2 A3 IB 5 5 HH2 LEVEL 2 INT dli NC R26 511 M _DB 9 12 DID 13 Dli 14 JM2 15...

Page 353: ...l A2 A3 HP IB ADDRESS HP IB SEL 5 GD 5 GD i 3 5V F1 _ J_M HX LEVEL g INT Ui i NC R26 5110 v JUL DB 5V F1 11 09 12 13 DIP Oil 14 D12 15 D13 is D14 17 D15 A CONTROLLER RESET 5 6 7GD R13 10k 5 MHz CLOCK LtT 5 INTERRUPT PRIORITY ENCODING v LB INT U4B 4 RPG U6D CHANGEiL 13 12 y i U W R TIMER VAL MEM 5GZ TIMER SEL 5 TIMER ENABLE 5 TIMER ADDRESS 5 LY ...

Page 354: ...0 1 211 2 212 3 213 4 214 5 215 B 216 7 217 ViB ENCX 10 11 1 2 1 3 1 4 1 5 IB 17 1 IB CX 1 cx 2 cx 4 cx _ TTL HIGH 1 08 SV F1 R2 10k VAL MEM 5 Tv TIHERSEL 50 U9F 13 IN a 1 3 J H R i L cso CS1 16 TIMER ENABLE 5 GD TIMER ADDRESS 5 XL i _AJ l f l 7 11 8 IB IRQ PROGRAMABLE TIMER B840 ENABLE RSO RSI RS2 RESET 01 CLOCK 1 GATE 1 CLOCK 2 02 GATE 2 CLOCK 3 03 GATE 3 25 24 DB y D9 23 DIP 22 Dll 21 D12 20 D1...

Page 355: ...GH 2 GDs 6 5VIF1 b E 12 13 n 10 IPLO NC IPL1 PROCESSOR INTERRUPT NC _UL IPlg OL 15 14 NC NC NC 5 P Q J 3 BEEPEP V 3 1W 25 JB 24 D9 y 23 Q i o y 22 Dll y 25 Dig 20 0 1 3 19 D14 j 18 D15 16 IB DATA BUS 5 7Qfl IB 00 015 16 _27 24 o Q l 3 28 NC NC J j ATTENTION Static Sensitive Devices no 01 02 JO _0i JBL _QS_ Jia_ 0 9 JliJL _flii_ JH2 D13 014_ Ufl_ JiX pa J JDJ_ J _DJ_ JiZ voa j a 010 ML Jill D13 fli...

Page 356: ...MP1 BLACK Figure 8F 104 SERVICE SHEET 5 INFORMATION ...

Page 357: ...7 Ul C43 J3 C12 CR9 U2 SI TP1 IHL R49 U17 U37 Wl C4 1 C13 j U12 IR46 1 1 H50 I C36 _ U19 C7 U29 U U31 o U W2 W3 J2 Jl C41 US R39 RE R33 R2 R40 U16 Ull R37 U36 C26 U41 CR2 C3B w R36 c e O Ul CR5 CD R34 R32 PB Component Locator ...

Page 358: ... U19 C7 at u U31 o U29 U3 ff39 TJF U16 R33 R2 B40 U i l R371 In H36 CB BT1 C26 _ U41 38 C R 2 _ j C33 J 0 U13 a CH5 3 H34 R32 PB U14 S CL A3 tor ...

Page 359: ...ATA BUS DATA BUS OUT SS SERVICE SHEET Reference Block Oi agram Component Coordinates COMP C4 C5 C7 C13 CR7 CRS J l J2 J3 J4 MP1 MP2 P5 P8 Q9 Ri R3 R44 R45 R46 R50 X Y B 3 B 1 C 3 a 2 A 3 A 3 B 3 B 3 C 1 a i A 1 D 1 A 3 3 a 3 A 1 A a A 3 A 2 8 2 a 2 COMP Ul U4 U5 U5 U7 U8 U9 U12 U17 UJ9 VII W2 X Y B 1 B 1 B 1 A 1 B 1 A 1 A 1 a 3 D 1 C 3 B 3 B 3 COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y ...

Page 360: ...ufactured using a hot air leveled process These boards require extra care Mhen replacing components Refer to General Service Information paragraph B 3 3 W2 and W3 are 8 contact blue post jumpers They connect one row of J2 to the single row of Jl for normal operation To disconnect data bus move jumpers over to connect one row of J2 to its other row This other row is grounded A3 S1 COMPONENT SIDE TO...

Page 361: ...Model 8642A B Service CHANGES 2613A and abov m m On the schematic In the upper left portion of the schematic change the A3 part number to 08642 60224 SS5 SF 104 1 ...

Page 362: ... a D13 KJlii D15 MOTE 3 P 0 P O NC MC V Jo o _J2 34 32 29 c 15 30 28 26 35 ia 36 Jo NK i Nx 10 u o of _12_ 13 S X 14 15 0 0 16 17 o 1B 20 10 23 NC 23 24 00 Dl A D2 03 04 S 05 06 D7 DATA SUS 6 04 7 08 0 9 DIP O i l y 012y 0 1 3 014 N OIL CHANGES TO FIGURE 8F 105 All senal prefixes rev 0MAR86 ...

Page 363: ...5 D6 D7 OB D9 D10 Dll 12 D13 D14 D15 R W LOS UDS AS VPA DTACK XC4 64 63 62 61 60 59 5B 57 56 55 54 BGACK IPL 0 IPL 1 IPL 2 RESET HALT 8ERR FCO FC1 FC2 Al A2 A3 A4 A5 A6 A7 AB A3 A10 A H A12 A13 A14 A15 A16 A17 A1B A19 A20 A21 A22 A23 V 21 10 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 50 51 52 6 53 POWER SUPPLY ND GND I 4 TJ POWER SUPPLY AND QND 5V F1 SERIAL PREFIX 2427 MA A A 4 LA...

Page 364: ...R6r gF tOS StU AJ AJJ A13 A15 ...

Page 365: ...M OUTPUT ENABLE A ACKNOWLEDGE 5V F l U5 i i_ 1 _ ID C1 a s ID C1 R S V 5 i b P H NC 1 A1 A3 HP IB ADDRESS A 6 A 8 TIMER ADDRESS CD 3 J 19 CD7 vPJL v D l D _ vD3 D4 s D5 DATA BUS DISCONNECT D6 D7 S PS v P9 y DIP vpll y 012 v 013 y014 015 NC NC NOTE 3 0 P D J2 o o J 36 34 32 W o r 30 o NK 2B 36 24 22 20 IB 15 o K 16 13 XrJ 14 11 N 12 X 10 NC X N D15 ...

Page 366: ...O Dl M D2 N D3 N 4 N D5 D6 N 7 TTL HIGH2 ADDRESS DECODER D8 A DATA BUS 09 A _ p i M Dll i D12yj D l M _P_ii T 015 TTL HIGH 1 A16 A17 A1B A13 A14 A15 A16 A16 3 A ADDRESS DECODER 5 V I F 1 U19 rt 16 XC7 JO l BIN DCT EN k l 4 R0H2 SEL I 15 ROM SEL 13 A0W3 SEL 12 ROM4 SEL I 11 RAH SEL J0RAM2 SEL 3 EEROM SEL 7 I O SEL 5VIF1 U17 S BIN OCT EN 15 HP IB SEL 14 RS 232 INT 13 TIMER SEL 12 A D SEL 11 D A SEL ...

Page 367: ... SEL 11 D A SEL 10 LATCH SEL CAL BD SEL HP IB SEL 04 TIMER SEL 4 UNUSED ADDRESS DET U9E 6 LATCH l JJHR 2 5 LATCH LWR k C L K M i KJJQS K LDS LATCH k UHR LATCH LHR R0H1 SEL ROMS SEL R0M3SEL R0M4SEL RAH1 SEL RAH2 SEL A19 N N EOE A50 OE QAWR fl W A O SEL D A SEL LATCH SEL Al AS A3 A4 A5 A6 A7 OE J 2 0 p o l J4 I P 0 PB P 0 RS 232 SEL J UHR LWR CAL 80 SEL EOE I A4 A5 AS A7 AB AS A10 All 13 n 09 LUXR L...

Page 368: ...HP BLACK Figure 8F 106 SERVICE SHEET 6 INFORMATION Co ...

Page 369: ...A MZIk U7 Ul U33 01 u U24 o CJ U26 J3 CJ2 a CH9 HZZK us ID u m3 U10 J2 J l HI C4 W2 W3 Ts J2 J l 1 c 3 1 1 FM6 1 I R50 1 C36 U12 U19 C 7 U29 C41 U3 R39 fl6 R33 R2 R40 U16 Ull R 3 7 R 3 5 l rl h Component Locator ...

Page 370: ...SUr3 Uf 19 C7 39 C41 U3 BT1 JOS _0J_ UI6 ML H40 Ui 1 r R 3 7 l I R35 I 1 C2B U41 1 R3B 1 C 2 C38 1 0 U13 LJ n R35 C8 CR5 CZE _ M2 P8 U14 B D A3 ...

Page 371: ...EEPRQMS SS7 SS6 AODRESS BUS tADDRESS INES OATABUS DAT I BUS OUT Reference BIock D i ag r am Componen t Coord i nates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y C8 C9 CR5 J i J3 MP1 MP2 02 R4 R5 R7 R30 P 31 R32 R33 R34 R35 R3B R37 R3B R47 R4B R49 TP1 D 3 D 2 D 3 B 3 C 1 A 1 D 1 0 3 D 1 U4 U7 U9 U14 U15 U2S U40 U41 W3 B 3 P O A3 PROCESSOR MEMORY MODULE SS5 S E E...

Page 372: ...ule configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 3 W3 is a single contact blue post connector It connects Jl pin 1 to J2 pin 1 in normal operation To disconnect runaway reset move W3 over to connect Ji pin i to Jl pin 2 Ji pin 2 is a TTL High Sche...

Page 373: ...Model 8642A B Service CHANGES Z613A and above On the schematic in the upper left portion of the schematic change the A3 part number to 08642 60224 SS5 8F 106 1 ...

Page 374: ...6 4 2 6 0 1 2 4 41 r P 0 J3 l_ PROC STATUS 5 CD RESET STATUS DETECTION ADDRESS STflOSE 5GD 8US GRANT ERROR DET A20 5 M UNUSED ADDRESS DET 5 QP POWER SUPPLY AND GNO 4 GD ADDRESS ERROR DETECTOR POWER SUPPLY AND QND 5V F1 5V F1 GNO T GROUND 7 SERIAL PREFIX 2437 ...

Page 375: ...Fife j JQ7 L A S_ SS ERROR DETECTOR M A 5 V F i 9 U 4 0 C U4F U 7 C A U40D 13 12 U9D si 12U7D LOW VOLTAGE DETECTOR TPl RUNAWAY RESET RUNAWAY RESET DISCONNECT W3 P 0 NOTE 3 P 0 TTL HIGH 2 4 5 ...

Page 376: ...UNAWAY RESET DISCONNECT P 0 N 0 T E 3 P 0 J2 Jl TTL HIGH 2 4 5 J CONTROLLER RESET AND POWER UP PROTECTION ADDRESS ERROR LATCH 5 V F l 45V Fl R33 Ik 5V Fi U40A 5V F l U40B R35 100k R37 42 2k U41A 2 U41B U41D ID 11 13 U41C 14 ...

Page 377: ...P PROTECTION 5V Fl R35 100k 037 U41B U41D U41C 14 RESET TIMING 5V 1 Fl R38 147k R36 100K RESET DRIVE 5V R32 6B10 H31 1M Fl CR5 3V 5V F3 R31 133 Q2 R30 215 V CONTROLLER RESET r GD4 5 7 ATTENTION Static Sensitiv Devices ...

Page 378: ... l TIMING 5V Fi n R33 d7k R36 100K RESET DRIVE 5V Fl 32 810 CR5 3V 5V F1 R31 133 Q2 R30 215 CONTROLLER RESET 1 04 5 7 CONTROLLER RESET A P 0 SERVICE TEST POINTS ATTENTION Static Sensitive Devices SS6 Figure 8F 107 8F 107 ...

Page 379: ... G 8F IOg su itls MP1 BLACK J4 U4 U7 cvi u CJ C13 U24 U23 IR46 1 L R 5I 1112 Wl C4 W2 M g u r e 8F 108 SERVICE SHEET 7 INFORMATION Com ...

Page 380: ...hdk U5 jll UA J7 U33 OJ U24 MIZK Ul I C43 J3 C12 CH9 U2 U10 J2 Jl Wi H2 H3 13 J2 J l U12 U19 C7 U29 C41 U3 R39 R6 R33 2 M L U16 un H37 R3T Component Locator ...

Page 381: ...f F eg U 3 U27 U34 19 C7 29 C41 U3 ilia _HJ_ U16 _E4fi_ un BTl Ui4 H37 B3T C26 U41 1 R38 1 CH2 1 C38 o U13 R35 ca CB5 ex P8 D A3 ...

Page 382: ... SS SERVICE SHEET Reference Block Diagram Component Coordinates COMP X Y I BT 1 C l l C16 C17 C20 C21 C22 C23 C24 C25 C26 C27 C2B C29 C30 C31 C37 C3B C39 CR2 CR3 CR9 MP1 MP2 R24 R51 SI S2 D 2 D 2 D 2 C 1 A 1 0 1 D 3 A 1 D 1 A 1 COMP Ui U13 U20 U21 U23 U24 U25 U26 U27 U2B U32 U33 U34 U35 U3B U37 X Y B i D 3 A i A 1 B 2 B 1 C 2 C 1 C 2 C 1 B 2 B 1 C 2 C 1 D 2 D 1 COMP X Y COMP X Y COMP X Y COMP X Y ...

Page 383: ... note any changes that apply specifically to its module configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 A3 81 COMPONENT SIDE TOP VIEW 10 9 S 7 6 A3 S2 COMPONENT SIDE TOP VIEW 4 3 lCl r J C 2 L ri o J U 1 3 3 5 n tr 2 Schematic Genera I n f o r m a t ...

Page 384: ...ii s i i i i fr 0 kMfk i ii tS lS l H zri 6 jr i K SS V wtnt m j v v V 1 J ft K v w v k a W v v v m I S ii si it t s M r i J ft l 4 U i j j In POWER SUPPLY AND GND add a power supply line from the anode of CR3 and label it 5V F3 On the schematic In the upper left portion of the schematic change the A3 part number to 08642 60224 revl5JUN 6 SS7 SF ios i ...

Page 385: ...UTPUT ENABLE 4 5 J i 5V 2G EPROM 32k X B A 14 0 32767 A V A V A V A V A V A V A V A V EN VPP U24 11 DO 12 pi 13 D2 15 D3 16 D4 37 D5 18 D6 19 D7 14 ROM1 SEL J 16 M 10 0 Al A3 Al A5 A6 A7 AB A9 25 A10 24 All 21 A13 23 A13 AJ_4 26 AJS 27 20 22 15 A 15 EPROM I A 14 EN VPP 5 P 0 PB 5V UNREG POWER SUPPLY AND QND VOLTAGE REGULATOR U13 GROUND 6 P 2 i C39 V V I W GND D U T IF 5V F2 C R 2 CR3 f 1 C3B 5V F2...

Page 386: ... 5V F2 5V F2 LC27 LWR UWR 5GD ...

Page 387: ...0M4 SEL A J_4 A1S 15 _20 A mfc V i6 A V TT A V 1 5 7 13 15 13 EEPROH SEL _ 5V F2 i M B192 X 8 0 H191 A ID V A ID V A 10 V A ID V A ID V A ID V A ID V A ID V EN TE 0 T 2 C17 11 DB 12 D9 1 3 0 1 0 15 D l l IE 0 1 2 17 D l 3 y IB 0 1 4 y 19 D15 5V F2 U36 A l n 10 A2_ A3 A4 A5 A6 KO VAB V A 9 2 5 AlO 2 4 v A l l 2 1 v A l S 23 A13 a o 36 _37 J2 C1 i28 12 RAM B192 X 6 A ID V A ID V A ID V A ID V A ID V...

Page 388: ... ID V A ID V A ID V A ID V A 10 V A 10 V A ID V A ID V 12 A _0 8191 EN WRITE READ c i XC31 11 OB y 1 2 _ 0 9 J 3 _ p l M 15 Dll H 16 D 1 2 17 D13 J J S _ D 1 M 19 015 EEPROM OUTPUT ENABLE 5 L Z CALIBRATION DATA EEPROMS U20 M i M i Ma KAi M KA6 ML kA9 23 AlO 22 All 19 II WRITE DISABLE 5V F2 S2 P 51 lk U1D UHR 10 U1C HATTERY SENSE LQ_tJ JU 124 EEPRDH 204B X B A 2047 10 Gl 1 C2 Mo 1 EN 3 READ BYTE WR...

Page 389: ... 0 22 A l l 19 I B 2 0 K 21 KI D 0 S Q 1 Q 2 Q 3 s D4 0 5 KQ5 D7 9 r 1 0 11 w 1 3 U n 1 5 1 6 17 U2C T 24 EEPROM 2048 X 8 n N A 2 A 2047 G l 1 C2 READ 1 ENIBYTE WRITE A 2 0 73 5V F2 C24 f 0 1 U 7 X J 5V 1 Ai 8 A2 7 v A 3 6 A4 5 A5 4 A 6 3 A7 2 v A 8 1 A 9 23 A I O 22 A l l 19 1 8 K 2 0 K 31 iJ QQ D 9 D l O S D11 s 012 D 1 3 D l 4 015 9 m m 1 0 i 1 1 1 3 i 14 15 _ IB 17 U21 F2 i 1 C 3 0 24 v EEPROM...

Page 390: ...ft1 InptLi CM fttf ...

Page 391: ...D MATRIX y LINES 16 INSTRUMENT SENSE S DETECT LINES DIAGNOSTIC BUS LINES SS SERVICE SHEET BUS TRANSCEIVERS I O DECODE SS8 DATA BUS V INPUT LATCHES OUT QF LOCK DETECT VOLTMETER D A OUTPUT LATCH ENABLE V OUTPUT LATCHES SS9 SS10 X AXIS SWEEP SS11 INSTRUMENT CONTROL LINES Figure 8 G 1 0 0 B D 4 General Information ...

Page 392: ...Service l 26 00 fr 2 Module Test P o i n t A d j u s t m e n t Locations Model 8642A B rGD CD N CABLE T K Q _KV J WD POWER r C F METER I 8G 100 ...

Page 393: ...4 X2 XI Jfi 116 JIB VI 111 A A ROW Q ROW 1 JLQH 2 RDH 3 ROW 4 POH S ROW 6 ROW 7 COL 0 gpy x J L 2 COL 3 COL 4 COL 5 6 i JP8 DIR ATN LEVEL BAND LOCK BD17 G D HOD HI X 42 P 0 P 3 ATN BAND _ _L_QCK__ T BD6 GD COUNTEH OUTPUT BD8 G D OVEN SENSE BD17 GD OISP BUBVfL I I FN LOH SHEEP LIMIT BD10 GD ATN REV PHR INT BD17 G D HOD H I LO INT BD6 GD RPG CHANGE L BD2 GD KEY DHN L BD2 GD EEPROM HE BD3 Q 46 f I 4 ...

Page 394: ...D j QD SS8 r v VH TEST BIT _ GLH TCHES I M POWER SUPPLY AND GND 13V FJ 3V F1 5V FI MODULATION DIAG BUS BD6 CED 13 FM LOOP DIAG BUS BD8 Z 7 REF LOOP DIAG BUS BD11 G D SUM LOOP DIAG BUS BD12 G D p o P2 HOD 10 I I B OUTPUT SEC DIAG BUS DOUBLER DIAG BUS BD16 C D FM OOL REF OOL SUM OOL DBLR OS OOL HET OOL BD14 2 HET REF DIAG BUS BD15 C5D SAWR LOOP DIAG BUS p3 SAWR BD9 32 0QL TIMEBASE DIAG BUS I TB BD7 ...

Page 395: ...S VMJTEST BIT V CNT INT DIS OOL_MASK _QOL_flESET _7 P Q SERVICE I 4 CONNECTIONS I I LLHR LHWR r 4 B P 0 P3 1 BD3 LATCH UWP KX 49 LATCH LWR P 0 PI I OUTPUT LATCHES 7 2 7 LB INT GDBD3 SS9 1 I 8QA I L 9 POWER SUPPLY AND QND P 15V Fl L 5V F1 15V Fl P 0 P2 r 5 K i HET MUX A P 0 sjjyx_B_ i_i 3 HET 45 LCD LIGHT ON v BD2 DOUBLEfl MUX CDB D 1 6 1 HET MUX I SELECT LINES fvSAWR OIV 0 5DBD15 yoiv i TIME BASE ...

Page 396: ...5 r 4 i p o PI 3 4 45 LCD LIGHT ON K B D 2 DOUBLER MUX GDBD16 HET MUX SELECT LINES BD15 SAHR A P O pa v SAHR B v DIV 2 DIV 0 DIV 1 40 42 P I 3 7 P O P3 1 3 _ 44 V B D 7 I U U L 41 SAHR DSC SELECT LINES BD9 I DIVIDER CTRL LINE OIV 2 E BD13 DIVIDER CTRL LINES DIV 0 1 GDBD4 HET BAND CDBD15 O B D 8 ...

Page 397: ...L LINES CTRL LINES C SUM LOOP I CTRL LINES I W GDBD12 I FM CTRL LINES i LINES u u I GDBDB I g MODULATION ADDRESS DATA LINES TD BD6 ATN LEVEL TRIG ATN BAND TRIG MOD CLK S HP IB SC P O P P O P2 P O P3 V KB RESET RPG L KB RPG KB RESET KEYS L P O PA I _ _ f as Hj BD2 I DBD16 CDBD10 cc BD10 CEDBD17 GDBD17 5 5 7 10 i i 12 P O SERVICE CONNECTORS AXIS AXIS 3 39 2 GDBDX LCD DRIVER INPUTS U 16 1 20 S 21 7 9...

Page 398: ...FI6 f 102 HP l HHITE Ui U10 UB U32 U37 U30 U7 U13 U12 PI m a in en CM U3 m U43 IMS U15 U21 2 Figure BG 102 SERVICE SHEET 8 INFORMATION ...

Page 399: ...I03L SUt o r _r m en u 1 cr to cr m cr cr U3 U42 U44 POWER METER CABLE HI I IQ TP3 T fei U43 U19 U15 U45 U16 o l o fU CJ U24 U6 U23 U33 U17 U4 U5 U31 U3B U47 Ull U21 U22 U14 U16 U27 US P2 P3 Component Locator ...

Page 400: ...WER HETEfl CABLE Ml I IP TP3 TP2 TPl Si U23 U33 U17 U1B U4 U5 U31 U27 i L M I 1 1 n ofTn M Ha H P m usa U47 R litl t i l l U9 C l C X J Cu exec U29 U2B MP2 BLACK T O O IO o CD o in CJ r o rl J _i P3 P4 A4 ...

Page 401: ...S OUTPUT LATCHES INSTRUMENT CONTBDL LINES X AXIS SWEEP SS11 OUT OF LOCK DETECT SS9 SS SEHVICE SHEET Reference Block Diagram Component Coordinates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y CB C7 CB C9 C10 Cll C12 C13 C34 C35 C36 Jl LI 12 L3 MP1 MP2 PI PI HB Ul U2 US u s UIO n o n A B 2 D 2 A 2 A 3 D 0 D 2 A 1 D 3 n 3 D 3 A 1 D 1 A 3 D 3 S 2 A 2 A 1 B l A 3 A 3...

Page 402: ... the nodule configuration code When servicing a nodule note any changes that apply specifically to its nodule configuration code 2 All circuit boards are nanufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 Schematic Genera Information 8G 102 ...

Page 403: ... i wmm E E E i i ii i H T i i i i i i i fi iiiiii V E E E EE E E EE i i i K i i ii i i iii V i y i i f i i i i S On the schematic C_8 In POWER SUPPLY AND GND move the polarity sym bol to the ground side of C8 Jl On the right side of I O DECODE change Jl pin 6 to pin 8 SA QUAD SS8 80 102 1 ...

Page 404: ... 27 P3 K M n 34 36 38 41 47 l_ BUS TRANSCEIVERS LATCHES U1B 6 5V F1 U8 ABM J _ b 20 93 3 EH1 3 EN2 XC13 J 0 1 W IB 12 IB 15 J 4 _il J l 11 19 5V F1 U10 I V V 2 i20 E3 3 EN1 3 EN2 T C12 J0 1M 10 r18 17 1G as 14 13 12 11 I V V 2 10 POWER SUPPLY AND QND l c 3 5 t_ J 0 1 W J15M L2 5U 1SV FU jtSVIUl I C34 UTCB O i J J T 2 2 U LI 5W T I 5V F1 C9 Icio Icii 5V F1 L C3B J C0 T O I M Ti5M L3 5U T4 7 J I 4 7...

Page 405: ...Dii I A D p Oio 15V F l 5V F l 1 5 V F l _08 A Bfl DIP PV A P 3 D14 15V F l 5 V F l 1 5 V F l N W DATA D0 D9 K 1 0 DATA BUS PONER SUPPLY AND GtJD 9 1 0 1 1 _gNO 4 O DECODE KM M L k x KKL Kii _AZ 1 5V U2 _23_ _22 21 J L j i i J n EN ...

Page 406: ...r 86 tol SU 3j TTL HIGH 9 ...

Page 407: ...OUTPUT LATCH EN SD 11 INPUT LATCH EN 9 fit ATTENTION Static Sensitive Devices p o _ a_am l s I i i 15V1F1 I fSVfFl 15V Fl _SNJL T14 1 2 I I P Q SERVICE CONNECTORS J SS8 Figure 8G 103 BG 103 ...

Page 408: ...MPI WHITE ui U10 UB in K m w cc U3 U43 U32 U37 U19 U30 U7 U15 U13 U12 U21 PI U42 U45 E S 03 EC U16 Ug2 P2 Figure 8G 104 SERVICE SHEET 9 INFORMATION Co ...

Page 409: ...IS U3 U43 U19 U15 U21 U42 U45 OJ i EiJ I Spol I E U44 U16 U22 U24 1 u U6 U14 POWER METER CABLE Wl TP3 ig U23 U33 U17 UJ8 U4 I U38 U5 U31 U27 U47 Ull US P2 P3 Component Locator ...

Page 410: ...BLE HI H rP3 TP2 TP1 IT T 11 r t Si V y CC Q CI CJ L oc o o cc cc lot runrnr i i cc SI ccMcc U23 U33 U17 U18 U4 U5 U31 U27 II U38 U47 H llil uu U9 U29 U28 MP2 BLACK TT 10 u IO in u 03 J in r o j en _i 0J _i P3 P4 A4 ...

Page 411: ...P SS11 OUT OF LOCK DETECT SS9 SS SERVICE SHEET Reference Block Diagram Component Coordinates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y HPl MP2 PI P2 P3 P4 R7 R12 RIB R19 R21 R22 R25 R26 R27 SI Ul U24 U27 U2B U29 U3Q U31 U32 U33 U34 U35 U3B U42 U43 U44 A 1 A 1 1 A 3 B 3 C 3 D 3 A 1 C i B i B 1 D 1 D 1 D 2 D 2 D 2 D 1 A 2 C 2 C 3 D 2 D 1 A 2 C 2 A 2 C 2 A 2 A 1...

Page 412: ...figuration code Hhen servicing a aodule note any changes that apply specifically to its aodule configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care Hhen replacing components Refer to general Service Information paragraph 8 3 A4 S1 TOP VIEW OFF Schematic General I n f o r m a t i o n 8G 104 ...

Page 413: ...chematic change Jl pin 4 to pin 7 On the Component Locator C41 C42 Note location of added components shown on page 8G 104 2 In Component Coordinates C41 C42 Add C41 B l and C42 B 2 On the schematic In the upper left portion of the schematic change the A4 part number to 08642 60225 C41 C42 In OUT OF LOCK DETECT add a capacitor from U43A pin 13 to ground Designate it C41 and give it a value of 0 lu ...

Page 414: ...Model 8642A B CM SI m 1 r 3 3 _ tf I Veal FIGURE 8G 104 2521A and above revl5QCT85 ...

Page 415: ...P 0 A4 LATCH MODULE_ 08642 60125 DATA BUS 8 11 GD OUTPUT ENABLE 5 GD HP IB UUIHUT5 RPG CHANGE L 2 4 KEY DOWN L 2 QD EEPROM HE 7 GD SERIAL PREFIX 2437A ...

Page 416: ...FI 6 foS SLta J_ i 21 GD AGNOSTIC BUS 1 1 30 GE bJ 1 _ ...

Page 417: ...F 1 HOD 10 GDlO 1 0 K E 1 5 V Fl 10 FH V F l 45V Fl 5 V F 1 R1S Ik 1 5 V Fl 10 5V F l U44 16 16 OOL RESET L 11 10 11 12 14 15j i16 S2 S4 REfv SUM DBLy 13 OS 7 9 OOL DETECT LATCHES 5V F1 f A4 SAW U45 i s TB FN TTL HIGH 8 K J _ 10 H i 12 14i _15fi i S2 S4 SAVL TB F N 13 HET 7 OOL MASK 11 G B7 B6 B5 B4 B3 B2 SI BO 8 F N 2 1 4 r SAW 5 1 6 kos 15 1 1 8 S U M 13 2 kREY 1 5 001 4 1 6 FM 15 1 9 TB i s U30...

Page 418: ... 1 K G 2 KEY DWN HI LO INT HET PIS U240 13 ln I I RPP INT DIS U24E JZ _UL _ JL V STN U 3 0 B K SAW 5jgV5 s OS 5UM U30A 3 16 HD U30E 14 aS U30F 17 U3ZA ML n U32B DBL 5 v f i U32E 4 19 U32F TB 2 FM OOL SAM OOL o s g o L 5UM 001 REF OOL DBL OOL y FH OOL J TB OOL CNT INT DIS iiGE NTERRUPT DETECT 5V Fl R26 Ik 5VEF1 U38 1 ID c i R S J 2 11 13 pi F NC CNT RpVINT ATTENTION Static Sensitive Devices NC NC ...

Page 419: ...WN HI LO INT U24D 13 12 E 11 _ _ U24E 15 A H 3 14 AL 2 fit ATTENTION Static Sensitive Devices TB SAW FH OS D8L SUM HEF 3 _ iZ IB _ c 1D v I D8 y ML 013 H 015 15 09 15 010 IS D14 19 D15 P 0 J l P O SERVICE CONNECTORS L 4 10 12 y AO 10 5V F1 U34 16 1L 15 v f N O O L SAW OOL 12 OS OOL 11 y SUM OOL REF OOL vDBLOOL FM OOL s TB OOL MOD HI LO INT 13 RPB CHANGE ID CNT ROY INT 14 NC NC T P 0 JL 27 2 LB INT...

Page 420: ...MPi WHITE to o m u Ul U10 UB en U32 U30 U37 U7 U13 U12 PI to a EC u a a U3 a U43 U19 U15 U21 P2 Figure 8G 106 SERVICE SHEET 10 INFORMATION ...

Page 421: ...43 U19 U15 U21 U42 U45 01 o wH u t in C J CJ in U16 U22 U44 U24 1 6 U14 I POWER METER CABLE Wl TP3 m 2 U46 mior o I a i n pi a T rqg g o u cc cjfp Q Q O U23 U33 U17 UlB U4 i U38 U5 U31 U27 II U47 Ul U9 P2 P3 Component Locator ...

Page 422: ...F 6 U44 U34 U6 U14 POWER HETEH CABLE H1J I IQ U23 U33 U17 U1B U4 U5 U31 U27 TP3 TP2 TPi V SI 0 U47 1 U l l U9 U29 U28 MP2 BLACK r to 10 m u in m P3 P4 A4 ...

Page 423: ...WEEP SS11 OUT OF LOCK DETECT SS9 Reference Block Diagram Component Coord i nates COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y ci C2 C4 C5 C37 C38 CR5 CR6 CR7 CRB CR9 CR10 CR11 CR12 Jl Kl C 1 C i 0 1 D 1 C 1 B 2 B 1 B 1 D 1 D 1 e a B 2 B 2 B 2 A 1 A 1 MP1 MP2 PI P2 R6 fl9 RIO Rll 013 fll5 R16 R17 R34 R29 A 1 D i A 3 B 3 R 1 n i n 1 n 1 n 1 C 1 n 1 V 1 B 1 B 2 TP1...

Page 424: ... code When servicing a module note any changes that apply specifically to its module configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph B 3 A4 U46 TOP VIEW A4 K1 TOP VIEW 1 Vs 3 GND 8 7 6 5 2 Vout 1 2 3 4 Schematic General Information 8G 106 ...

Page 425: ...tic TF2 TP3 In INTERNAL VOLTMETER switch the reference designators for TP2 and TP3 On the Component Locator C37 C39 C4Q Note location of added components shown on page 3G 106 2 In Component Coordinates C37 C39 C40 Change coordinates of C37 to C 2 Add C39 C l and C40C 2 On the schematic In the upper left portion of the schematic change the A4 part number to 08642 60225 C37 C39 C40 In INTERNAL VOLTM...

Page 426: ...Service si Model 8642A B fsr r 51 n i 1 m tta i 1 3 SS10 8G I06 2 FIGURE 8G 106 2521A and above rev 50CT85 ...

Page 427: ...UX 0 10V REF MUX 1 MUX 2 10V F1 FM 00L SUM 00L REF 00L DBLfl f 4 5 1 8 5V Fi Kl Jfe TB MUX 3 V M U X 0 GROUND v M U X l MUX 2 SAWR 00L H E T OQL M O O VM IN TP1 CRB W 15V Fl 15V F1 NOTE SOLDERED COAX LINE WITH CONNECTION C4 0 1JJ POWER METER CR7 to RIO 5 1 1 C5 0 01JJ CRQ 15 15 n n n 12 11 n Hf 10 n 16 15 n n 7 n 12 11 J R9 147k n Rll 75k 15V Fl POWER SUPPLY 3 AND 6H0 SERIAL PHEFTX 2 7 POWER SUPPL...

Page 428: ... 16 15 5 V 7 IS n 11 io JT n 15V Fl 15V Fl 1 A3 f 147k CR11 13 V 14 J _ 3 C38 T390p U4C DAWR 5 GD11 V M DATA D0 D9 8CE INTERNAL VOLTMETER 15VIF1 U23 10 A D X DO 15 Dl 02 D3 D4 D5 DB 07 s DB D9 1G 17 18 19 5 6 7 8 5 J _ 5V Fl R13 Ik A20 AC Io I D n 12 n n fl 1023 1 EN IB Ffl L VREF In 14 n 13 10 I10 VM OUT TP3 TP2 11 3 CR12 15V Fl ...

Page 429: ...D 4 05 06 vD7 DB D9 5V t F l w 15 16 17 19 J5V F1 U23 R13 lk S A30 DAC fl 1023 EN I I D fl FBJ VAEF C37 22p f 12 U4D 13 n i i i s n 14 10VIF1 n I ft R17 100k 10 14 mm AV R16 51 1k 15VIFJ U4A 2 P JO lli n 15V Fl X C 2 0 1 J R15 133k VM OUT TP3 TP2 11 ...

Page 430: ... l 14 15V F1 R16 51 1k U4A 2 xci J 0 1 U 11 13V Fil J C2 0 1JJ fll5 133k U43D NOTE 6 VH TEST BIT CED9 ATTENTION Static Sensitive Devices J SS10 Figure 8G 107 8G 107 ...

Page 431: ...Ul U10 UB U32 U37 U19 U30 U7 U15 U13 U12 L U21 PI U1B D U22 P2 Figure 8G 108 SERVICE SHEET 11 INFORMATION ...

Page 432: ...TP3 a cr in cr C M U3 U42 U44 13 V o c cr o o ffi u u n a u 1 U43 U19 U15 U J U45 1 o m tr m rvi L i k d l_ l O CJ I D CM C_J in U16 U22 U24 U6 U14 U23 U33 LM7 U1B U4 U5 U31 U27 1 en m OJ U3B U47 Ui US P2 P3 Component Locator ...

Page 433: ... 34 US J14 POWER METER CABLE Wl TP3 TP2 TP1 i y J SI U23 U33 U17 U1B U4 U5 U31 U27 M M hl Jm 0 U3B U47 tx U l l U9 U29 U2B HP2 BLACK T O C CO cj o m 1 r _ j J P3 P4 A4 ...

Page 434: ... COMP C3 CJ4 C35 C16 017 C1B C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C3Q C3i C32 C33 CR1 CR2 CR3 CR4 J l MPJ MP2 Pi P2 P3 P4 X Y C 2 B 3 B 3 A 2 A 2 A 3 A 2 A 2 B 2 B 2 B 1 B 3 B 2 C 3 C 2 c i C 3 C 2 0 2 0 2 D 2 C 1 C 1 B 1 B 1 A 1 A 1 0 1 A 3 B 3 C 3 D 3 COMP Ri R2 R3 R4 H5 R20 R23 U4 U5 U6 U7 U9 U l l U12 U13 U14 U15 U16 U17 UiB U19 U21 U22 X Y A 1 D 1 C 1 B 1 B 1 C 1 B 1 C 2 C 2 C 2 A 2 D ...

Page 435: ...y specifically to its module configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph B 3 3 All capacitors shown in Power Supply and Gnd are connected between 5V and ground planes They are layed out in strategic locations to reduce undesired signal effects Schema...

Page 436: ...Model 8642A B Service CHANGES 11 1 l P l l P I M l P pill l l l Ill l Ml II All Serial ptf ft s f On the schematic i On the right side of the schematic change Jl pin 7 to pin 9 S A FLAG SS11 8C3 108 1 ...

Page 437: ...3 DS Id Dll 17 015 IB 2D I 12 15 16 19 10 A 1 6 V Z 10 5V F1 U12T2 6 1 11 J 20 6lC2 kPB k o i K D O KD4 Ma 13 kfi5 14 J32 17 07 IB 20 I _0SC_ILLATOH DISABLE HET MUX A JOUBLER MUX 9 LCD LIGHT ON L 12 HET MUX B 15 POL RESET 16 RPP INT 19 HET O I S 10 POWER SUPPLY AND BMP 10 P O W E R SUPPLY AND QND e 415V Fl 5V F1 1 5 V FIJ i C16 33 l 1 NOTE 3 T 5 D9 16 5V U14 ijj 11 Gl 1C2 D O i 07 02 k j 4 k D3 13...

Page 438: ...A 5 FN C2 3 FN H IHV 16 5VJF1 U19 TgQ 11 Gl 1C2 DB_ D14 D13_ D12_ Dll 13 DID 14 D9_ 17 r 2 D15 11 r 2D f ATN Q_ A ATN_6_ ATN 5 ATN J_ 12 ATN 3 15 ATN 2 16 ATN 1 19 HET S W DRlVF A CONTROL 16 7 T 5V Fl U22A U16 5V Fl H 120 EN 11 Gl 1C2 k D O i kfiL k D2 k 3_ D4 13 kD5_ 14 k D 6 17 D7 IB 2D I A JLA XL V U2ZB 1 9 E N I 1 C15 J0 1M IB OS CLX 15 OS DATA 14 REF CLK_ 12 REF DATA 10 r 12 11 15 13_ 16 15_ ...

Page 439: ...DATA LLATOR lONTROL I 2 lONTROL 0 1 L _ fc 5VJF1 U18 ATTENTION Static Sensitive Devices MOD DO _ih 11 v ir i 120 5VJF U9 12 Gl 1C2 _1L 11 Gl 1C2 HOD Dl MOD D2 MOD D3 MOD 04 MOD 05 MOD D6 MOD 07 v OS CLK P O P2 r OS DATA REF CLK v REF DATA SUM CLK SUM DATA V FM CLK FM DAT n 41 43 H 0 CO CO XT ON I s I OUTPUT SECTI CQNTRDL LINES 45 y 50 4 9 4 S 1 46 J REF LOOP CONTROL LINES I W DCT 33 o 1 SUM LOOP C...

Page 440: ...19 ATTN BP TRIS l MODULATION ADDRESS DATA LINES 18 7 S 6 V O DS 5V F1 U9 JJJGI 20 11 1C2 s DO n 03_ D D _ v02_ 13 V 05 14 fiL 17 Dl C 2D I DISP IS DISP 19 DISP 20 DISP 22 12 DISP 23 15 DISP 21 16 DISP IB 19 OISP 17 10 CNT INT PIS X AXIS SWEEP 15V Fl U5 DO 15 Dl IB D2 17 D3 If D4 19 D5 D6 D7 D8 09 5V Fl P 20 Ik r 120 A DAC 1023 EN tn FB iVREF 5V Fl U7 o ih 11 si s_P_i 1C2 3 0 5 vOL D7 DO 13 Dl 14 D...

Page 441: ... SI 7 COUNTER CLK COUNTED SIGNAL SELECT P 0 Ji _ L _ P 0 PI P 0 P4 P 0 P2 P 0 P3 TAKE READING STR08E I COUNT PERIOD SELECT RPP RESET ATN LEVEL TRIG ATN BANO TRIG MOD CLK HP IB SC r KB RESET RPG L P 0 P4 K8 RESET KEYS L VT GDS HET SW DRIVER CONTROL B 5 7 10 11 IS 43 4 o P 0 SERVICE CONNECTORS 39 Z AXIS X AXIS zr GD12 LCO DRIVER INPUTS 2 16 2 4 Ho Isl 2s ja COUNTER CONTROL LINES RPP RESET i CDs ATN ...

Page 442: ...f HP 2 Confl o or s Mhlij ...

Page 443: ...rvice CHANGES AH Serial Prefixes On the component locator J3 J6 Change the connector reference designators as follows J3 to J5 J4 to J6 J5 to J4 J6 to J3 9 Write A 15 at the bottom right below the diagram SS12 8H 100 1 ...

Page 444: ...Component Locator ...

Page 445: ... D K 0105 v 0103 0104 PI05 DI01 SIGNAL COMMON Gt SIGNAL COMMON Z AXIS X AXIS 11 ov _ Z AXIS v Z AXI S CQM y X AXIS X AXIS COM P 0 A5 POWER SUPPLY DIGITAL DISTRIBUTION ASSEMBLY p o JIB 10 r 12 14 f 11 1 5 f IB OUTER SHIELD 2 2 23 IB f 6 4r 26 30 32 3 4 f 36 f 38 40 r 42 r 39 I I 43 12 19 P 0 J17 J20 2 AXIS C O M X AXIS COM 10 12 2 4 6 B 9 11 1 3 3 7 1 13 I 14 J21 13 14 11 9 7 5 12 10 B 6 15 16 2 H ...

Page 446: ... 5 7 V 13 14 J21 13 J 14 11 9 7 5 la 4 i o 4 6 4 15 4 IB 4 2 4 1 3 4 4 I W12 A15 HP IB 08642 60129 25 1 28 18 20 22 24 17 19 21 23 29 30 r 13 r 14 r 11 f 9 C 7 5 12 10 a is e 16 2 1 r 3 4 T I T J 71 J4 HP IB HP IB j HEAP PANEL ATTENTION Static Sensitive Devices 4 VIOLET BROWN J I 4 BLUE P BLACK I 1 2 AXIS X AXIS SS12 I Figure 8H 101 8H 101 ...

Page 447: ...fi o Ca hbrAfcof X Ajrh yHo tiL ...

Page 448: ...Component Locator ...

Page 449: ...A20 CALIBRATION DATA MODULE 08642 60133 BEEPER 4 GD ...

Page 450: ... 5 V I F 1 U2 L L sA3_ A1 A _ AS_ A2_ SAB AL 23 Ai2_ 2 All _1S L _lB_b JL fij _2J_fc XCl J l 5 y 24 EEPROM 2048 X B A 2 k 2047 10 fil 1 02 READ 1 EN BYTE WRITE ASL 11 13 14 1 7 2D 3 A 2 3 I12 13 w 2 CE OE J OE P O SI HP pf nm P 1 1 pi nja ni4 p15 ...

Page 451: ... 012 013 014 _QXL AL A2_ 3 V A4 A5 _ vA7_ M_ S i i A I O _AJJ_ 5V F1 U1 23 _S1 A3 Alt X C2 J0 1M 24 EEPHOM 2048 X 8 A 2047 10 61 1 C21AEA0 MM 1 EN BYTE WRITE ZL tr lft 11 J i H J i IS 12 A 2D V 3 A 2 3 I12 ATTENTION Static Sensitive Devices J SS13 gure 81 101 81 101 ...

Page 452: ...A A Ylcdttftuf on fYloAocL ...

Page 453: ...CM EXTERNAL INTERNAL FM SWITCHING EXTERNAL COUNT INT EXT COUNT SELECT ZERO CROSSING DETECTOR SS14 SS SERVICE SHEET FM LEVEL ADJUST FM RANGE SELECT r SS17 A2 JB U i U J ALC LOOP MULTIPLIER SS15 FM OUT A2 J7 _L A MOD OUT T T T D _i_ FRONT PANEL A2 COUNTER AUDIO Figure 8J 100 BD5 General Information ...

Page 454: ...Service Mode 8642A B P J 100 Module Test Point Adjustment Locations SA atf 8J 100 ...

Page 455: ...Model S642A B Service CHANGES 2514A and above On the block diagram In the upper left portion of the block diagram change the A2 part number to 08642 60223 BD 5 SJ 100 1 ...

Page 456: ... SENSE POINT REF BD17 EN POWER SUPPLY AND GROUND v BD17 T f r 18 9 P 0 Ji 17 20 16 15 r H5V 15V 5V 1 5 V 5V GND POWER SUPPLY AND GND OSC FET BITS OSC DAC BITS BD6 D 10 V i a a m o z a cs UJ x a o z fs 15V PROTECTED B D 6 DSC DC B D 6 0 BIAS BD6 oz H5V IREF BD6 OSCILLATOR POWER SUPPLY AND GND s 3BD6 POWER SUPPLY AND GND GDBD6 3ii I SERIAL PREFIX 24S7A ...

Page 457: ...C B D D v j J OUTPUT AMPLIFIER MUX 2 G D BD6 MOO OUT MUX 6 GDBD6 ZERO CROSSING DETECTOR CNT INT EXT B D 6 Y W EXT CNT BD6GD INT EXT COUNT SELECT Q MUX 5 CD 06 COUNTER AUDIO SAMPLED VALUE TRANSFER PEAK DETECTOR SS14 ...

Page 458: ...GAIN AMP F M L N A CEDBDB MUX 2 CEDBDB HDD OUT INT EXT COUNT SELECT Q MUX 5 FD BD6 COUNTER AUOIO EQ J ED FER TOR GD SS14 GEH 15V PROTECTED POWER SUPPLY AND GND 15V 5V 15V 5V GND DSC DETECT PEAK DETECTOR PEAK DETECTOR j SAMPLED VALUE TRANSFER SAMPLED VALUE TRANSFER CEH H5V PROTECTED GD POWER SUPPLY AND GND 15V 5V 15V 5V GND ...

Page 459: ... FM SWITCH D 1 EXT FM H PR BD6 C D EXTERNAL FM SWITCH D D FM PAC BITS BD6CBHV FM SUMMING AMPLIFIER FM LEVEL ADJUST t ATT RELAY CONTROL BD6 GD MUX 1 p ZD BD6 FM RANGE SELECT SS1 VALUE in SAMPLED VALUE TRANSFER ERROR VOLTAGE AMPLIFIER MUX 4 OBD6 ALC INTEGRATOR OSC DETECT ALC LOOP MULTIPLIER SS1 ...

Page 460: ...FM RANGE SELECT SS17 i J6 W20 FH OUT f Q SD jj GD0D8 ts T OPTION 002 I I H203 jii I I Q SO H Q r MOD OUT I y_l U I TO HEAP 1 PANEL W17 J3 T9B Q Q r MOO OUT I I TO FRONT PANEL J8 I W21 COUNTER AUDIO K r MUX 4 OBD6 ALC INTEGR ATOR OSC DETECT ALC LOOP MULTIPLIER ALC LOOP HULTIPLIEF 5S15 _l BOS Figure 8J 101 8J 101 ...

Page 461: ...ERNAL EXTERNAL AM SWITCHES AH LEVEL ADJUST NORMAL DOUBLED OUTPUT SELECT DATA LATCH SELECT N MODULATION CONTROL LATCHES SS16 SS18 A2 J4 T A2 J3 HI LO DETECTOR HI L DIAGNOSTICS D INTERRUPT A2 Jl 1 i 1 1 AM OUT DOUBLED AH OUT NORMAL MODULATION DIAGNOSTIC SUS MOD HI LO INT Figure 8J 102 BD6 General Information A2 MODULE J D 5 SEE REVERSE SIDE ...

Page 462: ...F I G S J o Service Model 8642A I S M H Module Test Point Adjustment Locations 8J 102 ...

Page 463: ...Model 8642A B Service CHANGES 2S14A and above On the block diagram In the upper left portion of the block diagram change the A 2 part number to 08642 60223 BD 6 8J 102 1 ...

Page 464: ...D_D_i MOD D4 MOD pg HDD D5 MOD PS MOD p MOD 00 POWER SUPPLY AM FM SELF TEST FM SELF TEST GE BD5 BIAS OBD5 A M ar nr AM INPUT AC DC COUPLER D I5V PROTECTED j p 0 W E R BD5CE V 5UPPLY AND GND 15V 5V 15V 5V GND POWER SUPPLY AND GND BD5 FO H POWER SUPPLY AND GND hOBD5 FET SWITCH REFERENCE AF KEDBD5 ED QE AM LOW NO AMPLIFIER OSC DC Cpv BD5 CNT INT EXT h IDBD5 MODULATION CONTROL LATCHES AND 6ND 16GIHH P...

Page 465: ...IER 4 y OSCDC CNT INT EXT INT OSC BD5 EL INTERNAL AM SWITCH D EXT AH EXTERNAL AM SWITCH D AM SUMMING AMPLIFIER 3 15V AEF BD5 HI LO AM FM SELECT FM LNA BD5Go Eh HI LO DETECTOR GD EXT CNT QDBD5 7w ER BD5 MODULATION CONTROL LATCHES AH OAC BITS FH AC I 6D INT EXT Fj BDi FH INV HI BD5 EXT FH W pRE OBD5 ...

Page 466: ...T EXT FH GN BD5 FH INV HI GDBD5 EXTFM M PHE E BD5 NOB DBL AH GE NORMAL DOUBLED OUTPUT SELECT HUX SELECT LINES MUX 1 BD5 ED MUX 2 BD5 Tc MUX 4 BD5 FV MUX 5 BD5GD MUX 6 BD5 E GENERAL DIAGNOSTICS INTERFACE HOD PUT DAC ATT BELAY CONTROL GDBDS FM DAC BITS BD5 1 T SS16 SS18 ...

Page 467: ...F cK 8f io3 Slf c MOO OUT DAC T 7 7 B D 5 ATT RELAY CONTROL GDB D S FM DAC SITS GDBD5 F T B D 1 6 W22 0 ZDBp15 MOD HI LO INT GT BD4 HOD HI CIDBD4 SS18 _ _ j BD6 Figure 8J 103 8J 103 ...

Page 468: ...P15 TP16 TP22 J2 o o o o C125 IC119 J l C5i C52 GO T T 1 o TT CM H u o cu rl t J 1 u J 1 UB o o 0 0 U7 RIBS A175 flies R172 R163 R1BQ 0 CJ28 U32 V U52 U51 C5D oq 7 TP9 TP10 TP4 Figure 8J 104 SERVICE SHEET 14 INFORMATION ...

Page 469: ...Tie gJ oy TP15 TP16 7P22 TP177P2BTP19 TPIB TP21 TP20 TP30 TP23 TP29 TP24 TP3 TP1 Component Locator ...

Page 470: ...FI6 Z lotl TP20 TP30 TP23 TP29 TP24 TP3 TP26 TP25 U31 Bj C129 f Cl j JB osc ADJUST 1 TP27 o r ...

Page 471: ...t o r o r o t o t o t o r o i 33 3 3333 31 33 31 3 33 31 31 31 31 33 33 31 31 33 33 31 31 33 33 31 3J 33 3 33 31 33 33 XI 33 c o c n u i c j i i i U i r o o u 3 C O J c n o i i j a t j i t i i r o o t o a j a i c 7 i i i t i i r i 3 o CI1ft C O 0 0 0 I l O r 3 C l C 3 a O i r 3 0 t D a i n 3 C 3 3 0 a i C Q t p l 3 l l 3 OjrotoaJrjjujLOuiiJioiiicotJiJtorotouiloiouitoaiuiijrjjijiiJtiitoiAltoii c c ...

Page 472: ...hanges that apply specifically to its nodule configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 A2J1 CABLE PLUG 15Vdc 15VdC REF 15Vdc DIAG MOD 1V 1V 1V BUS CLK HC 06 04 02 00 f 2 l5Vdc 1V 5Vdc iV 5Vdc JV GND HOD HI LO HOD HI D7 05 INT Schematic General ...

Page 473: ...B 3 add C141 to the area between U16 and Rl 1 C142 In grid location B 3 add C142 to the area between R10 and Rll R189 In grid location C 2 add R1 89 to the area between U43 and R7 In Component Coordinates On the C141 C142 R189h Add components and grid coordinates shown above s pmatic CI41 C142 R189 Replace appropriate portion of the schematic with the partial on page SJ 104 3 In the upper left por...

Page 474: ...R R9 10k ttr TP3 1 15V F1 RIO 19 6 C12 X 1011 J U49 2 C13 X 1 0 W J TPi Li 9 1V R14 10k osc ADJUST 1 a R37 20k n Rll 19 6 R12 3490 C14 X 3Bp 15V IF 1 R13 56 2k C142 10 U C141 10 U ALC LOOP MULTIPLIER 15 GT OSC DETECT CD15 rev 5M 4RS5 SS14 8J 104 3 ...

Page 475: ... BU l C 1 1 9 15V F1 15V F1 5V 15V I lC122 i T l i T J33M JO itf 5V F1 5VIF1 5V f f f 15V Fl I LC120 X c i 2 i 6 8 W f o l i 1 15V M N C124 GND I J U124 J33W C125 O i J f 5 V F l 5V F1 GNO 15V REF G D 15 16 _ 13 15V PTC R7 19 U43 KOSC QBO 13 14 KOSC DB1 12 KOSC DB2 11 KOSC 0B3 10 NOSC DB4 KOSC DBS kOSC DBS kOSC OB7 kOSC DBS OSC DB9 15 n RB 20k t cr osc J ADJUST 2 NC 16 n D A CON CMOS A 0 1023 V RE...

Page 476: ...Ms S3 roe SUt zHrtr LATOR ALC LOOP HULTIPLIER 15 ...

Page 477: ...f fr 85 OS Slut 3 f f R13 56 2k ...

Page 478: ...C28 390p t CP19 C25 6Bp 6 R23 19 6 15V Fl X C27 R3 N VR3 9 R185 2370 TP2 NJ ObC i M M n n H H M H n i y5l6 17 I0UTPUT AMPLIFIER HOD OUT DAC 1 8 E W I U47 DAC Q 13 10 DAC 1 12 DAC 2 sDAC 3 sDAC 4 sDAC 5 0AC 6 OAC 7 sDAC 6 DAC 9 11 10 9 8 7 6 5 4 15 n 15V Fl CR3 16 n 14 ID A CDNV CMOS A 0 1023 0 1 2 3 4 5 6 7 B 9 V REF R F8 I CIS J 1 0 M l o l l 102 n i Q2 I R16 2370 C16 56p I CR4 15 Fl HUX 6 VR5 9 ...

Page 479: ... Gv INT EXT COUNT SELECT INT a 5V F l A159 10k U5 IB 2 EXT CNT 16cn 7 J L X2 TP5 n s 1 2 U51C EXT 9 X3 10 MUX 5 1 6 JB DIFFERENTIATORS 5V F1 C4B 2200P R64 I960 SAMPLED VALUE TRANSFER R65 1950 C47 lOOOp HI R52 1960 5VIF1 1 5 PEAK DETECTOR R63 1960 61 61k TP7 1 5 ATTENTION Static Sensitive Devices COUNTER W21 AUDIO T s 6 GDi9 j SS14 Figure 8J 105 8J 105 ...

Page 480: ...lot TP13 TP14 TP15 TP16 TP22 TP17 o o o o J2 C1S5I Jl C51 C52 CM o o w CJ CD C J J UB o o o o 1 1 U7 R166 R175 fllSfl R172 fliea U52 U51 i2B C49 fC50 J7 TP6 TPS TP10 Figure 8J 106 SERVICE SHEET 15 INFORMATION ...

Page 481: ...fl gJ 06 TP15 TP1S TP22 TP177P28 TP19 TPIB TP21 TP20 TP30 TP23 TP29 TP24 TP3 TP1 TP9 TP10 TP4 TP5 0 osc ADJUST 2 Componen t L o c a t o r ...

Page 482: ...IOC TP20 TP30 TP23 TP29 TP24 TP3 TP1 TP26 TP25 o u m m a t tn IT in tn a IF U21 136 1 J6 U31 C129 IB 1 j C i JB U33 i cas l 11 U35 01 0 osc ADJUST 2 Hz R155 P 155 CD in IX r in a in B w KS K5 IR153I K4 TP27 ...

Page 483: ... to U roro u ro 3 ti to to ro ro ro ro to ui to to to C C C C C t 4 l C l 33 33 33 33 33 33 33 SJ 31 31 33 33 33 3 33 33 3J 33 33 33 33 33 33 33 33 C 3 1 CJ C O C O lO O 33 D O I J u i i i C D C D I J J J I J 4 3 3 0 3 H 0 1 U l U 1 t J l C n J i t i t i J til CD J Ol t u I D H C J 3 CD O O CD C O fO 31 Ul A C O f 3 i O It CD 1 Ol rO f O O C O CD J C 3 1 J 3 3 J D3 tD t3J 3 3 3 1 P 3 J a C D 3 3 i...

Page 484: ...e the nodule configuration code When servicing a module note any changes that apply specifically to its nodule configuration code 2 All circuit boards are manufactured using 3 hot air leveled process These boardB require extra cars when replacing conponenta Refer to General Service Information paragraph 8 3 Schematic Genera Information 8J 106 ...

Page 485: ...ponents and grid coordinates shown above On the schematic C143 R190 In PEAK DETECTOR add a resistor in series with U36 pin 3 Designate it R190 and assign a value of 3160 ohms Between R190 and U36 pin 3 add a capacitor to ground Designate it C143 and assign a value of I OOp Farads In the upper left portion of the schematic change the A 2 part number to 08642 60223 8 f X i i f t i v i x iv i ii i k ...

Page 486: ...c DETECT HGD PEAK DETECTOR TPS R52 4640 CR6 4 m i C42 1000P R182 Ik w J_5 GUARD TRACE U36B 16 i U37D X4 15V PHOTECTED 1 4 G P POWER SUPPLY AND GND uQD L _ SERIAL PREFIX 2427A POWER SUPPLY AND GND 15V PTCTD 1 5 V F 1 5V FJ 1 5 V F l 5 V I F 1 J ...

Page 487: ... SAILED SAMPLE VALUE TRANSFER SWITCH TRANSFER w 19 6 15V PTCTD v R181 348 U37A _ J b NC Q C37 JlO 13 C3B 10H 4 R48 19 6 15V Fl U37B 8 b 6 n 7 C40 0 01M 15VJREF 14 EQ 16 GUARD TRACE ERROR VOLTAGE AMPL R51 27 Mr R50 Sk R4 6 I C39 J 10 1 U38A 2 R44 19 6 1 ...

Page 488: ...f 33 lo7 U 3 fS ...

Page 489: ...l _JJ _ _f 7 su y rf r TRACE ALC LOOP MULTIPLIER VOL 038 10k R39 5110 TP11 I R43 5 U 0 U53 R1B6 5110 R1B7 5110 R42 5110 V V R41 10k RJO 3160 12 n 10 11 n1 Rx Ry v 4 QUAD MULT gXb TT Ix iy 13 R37 6B10 ...

Page 490: ...0 15V Fl CURRENT TO VOLTAGE R35 19 6 R34 2870 VlV n1 fix L_ fly v 4 QUAD MULT x J I kxy TT Ix iy R37 6S10 13 R33 2610 R31 19 6k 1 C32 I 0 V R30 19 6k R32 2610 14 1 C33 T lOW R36 i T T 7 1 9 6 15V Fl TP12 15V Fl R2B 19 6 U54 3 C30 oy R29 19 6 15V Fl l c 3 1 T w ALC LOOP MULTIPLIER 014 ...

Page 491: ...P fr S3 OS sr TP13 TP14 TP15 TRIG TP22 J2 C51 C52 CO u T cu u o C J u to en o u cu u 1 TP6 TP7 Tpe TP9 F i g u r e 8J 10B SERVICE SHEET 16 INFORMATION ...

Page 492: ... NC NC iC40 TO OiJJ 14 V 3 R4 L13 19 6 0 1M 1 C36 T JOOp U21D PHASE DETECTOR T l U21B Cflli BVIF1 _ C23 I 1 M SAM BR XC2 OlJJ R3 100k PHASE DETECTOR INPUT EXTERNAL REFERENCE DETECTOR U35B Xt POWER SUPPLY AND GND GD22 5V Fi R14 k 100k I JSL AX _U_h C43 0 0 Hi I s R RX CX CX L17 3 f LC86 j i ...

Page 493: ...Fl 5r 8J IOS Tpao TP30 TP23 TP29 TP24 TP3 TPi TP26 TP25 1 U22 i 1 U15 u u m 31 C129 1 Ifll 1 Ci j J8 TP27 ...

Page 494: ...2 C B c s B 1 B 1 B 3 S 2 B 2 B 1 B 2 B 3 B 1 COMP CR7 CRB CR9 CRIO C R l i Jl J2 J3 J4 KJ K2 R77 H7B R79 RBO RBI RB4 RB5 RB6 R87 R88 BBS RSO R91 R92 R93 R94 R95 R96 R99 RIOO R101 R102 X Y a i A 1 A 2 A 2 C 1 A 2 A 1 B 1 C 1 A 1 B 1 A 1 A 1 B 2 B 2 B 1 B 1 B 1 B 1 B 1 B 1 B 2 a i B 1 B 1 B 2 C 1 C 2 B 2 B 1 B 1 B 2 a 2 COMP R103 R104 R105 R108 R109 R110 R i l l R160 R163 R166 R169 R172 R175 R179 R...

Page 495: ...specifically to its nodule configuration coda 2 All circuit hoards are nanufactursd using a hot air leveled process These boards require extrs care when replacing conponents Refer to General Service Information paragraph B 3 A2 K1 K6 TOP VIEW 8 7 6 5 A2 U29 TOP VIEW 0R L2 iav n 1 3 3 4 A2J1 CABLE PLUG i5Vdc iv 15Vdc flEF 1V 15Vdc 1V 15Vdc 1V 5Vdc 1V 5Vdc IV GND HOD HI LO INT 1 2 Schematic General ...

Page 496: ...llet under MUX 4 from FY to TV R6S R i l l In AM FM SELF TEST change the values of f E R68 and R m to 196 r 3 T 4 SiS y_5j In AM FM SELF TEST change the connection for SXZZT T mm U5l pin5 3 and H from 1 5V Fl to 5V F1 2514A and bdve On the schematic i ii Replace the appropriate portion of the schematic with the partial shown on 8J 108 3 In the upper left portion of the schematic change the A2 part...

Page 497: ...23 r DSC DC 18Gl SELF TEST SWITCH CONTROL 18 E AM FM SELF TEST 15V PTCTD R66 HDO 1 19 1 U51A 1 Is n NC 13 C50 o i y X C49 R67 19 6 15V Fl US1D _1B t iA fl 5V F1 15 R69 10k 15V Fl CBB R i l l 19B0 CR11 M R6B I960 BIAS D14 FM SELF TEST 17 ...

Page 498: ...13 TL C40 I J l 15V Fl U51D 16 n 2 X4 14 A 15 Rill Ik CRli H R69 10k 15V Fl CRS AH AC DC 18 2 r AM INPUT AC DC COUPLER I J2 U15F AM AC S f X l l R68 Ik FM SELF TEST Ki C51 C52 470 J 470JJ U15E AM DC S p y 1 2 7 15V Fl TP13 1 R71 600 C53 O iU 15V PROTECTED POWER SUPPLY AND QND 14 E POHEft SUPPLY AND GND u 15V PTCTD 15VIF1 5V F1 15V Fl 5V Fi FET SWITCH REFERENCE 5V F1 R7B 562 VR1 O 2 4V AM LNA 6AIN ...

Page 499: ... NOISE AMPLIFIER 15V Fl R72 5V Fl R70 562 CR9 CRIO 5V F1 LNA GAIN SELECT 15V PTCTD u TJ 13 NC R76 13 6 11 J C57 XI X2 VREF 3 Jl 3 n Iio i 2 n 14 EXTERNAL AM SWITCH R75 Ik R77 19 6 15V F J C58 FET SWITCH PROTECT VR6 B 2V 1 0 VR7 B T TP14 14 n I HI LO DETECTOR HI LO AH FH SELECT ieGE 13 FM LNA 17 Z B U14 i HX2 VREF 0 NC 1 4 6LA io i2 n 7 n 5 3 ...

Page 500: ...Fi BS 09 AM LEVEL AM AM AM AM AM AM SAM AM AM AH AM AM DBO 1 DB1 l DB2 11 DBS iZ DB4 i DBS 1 0B6 i DB7 f DBB OB9 f DBiO 5 DB11 4 ...

Page 501: ...FI6 gj IO Side V f S C BITS EXTCNT D14 HI LO RESET ie S ...

Page 502: ...MODULATION DIAGNOSTIC BUS l l MOD HI LD INT 9 la 1 II HOD HI J 10 H I GD SS16 Figure 8J 109 8J 109 ...

Page 503: ... TP14 TP15 TP16 o o o o 02 C12B fcITT J I C51 t C52 o cu u o to CO TPS2 TP17 L 1 U8 o o 0 O 1 U7 iRHOl Riee BJ7B RlEfl ni72 H1B3 Hi gQ C12B U32 TPB 1152 U51 C49 C5CT J7 TPB TP10 TP4 Figure 8J 110 SERVICE SHEET 17 INFORMATION ...

Page 504: ...YlGr 8T IIO TP15 TP16 TP22 TP17TP28 TP19 TP18 TP2i TP20 TP30 TP23 TP29 TP24 TP3 TP1 osc ADJUST 2 Component Locator ...

Page 505: ...P 6 SJ 7 O TP20 TP30 TP23 TP29 TP24 TP3 TP1 TP26 TP2S CO in in ID X IT K6 K5 IR153I K4 osc ADJUST 2 TP27 o r ...

Page 506: ... D 2 D i D 1 D 2 D 2 D 1 C 2 C 2 C 1 D 1 C 1 D 2 D 2 D 1 COMP R112 R113 R114 B U S R11B R117 R118 B119 R120 R121 R122 R123 R124 R131 R132 R133 R134 Ri35 R136 R137 R138 R139 R140 R141 R142 R143 R144 R145 R146 R147 R548 R149 R150 R151 R152 R153 R154 X Y C 2 C 2 C i C 1 C 2 C 2 C 1 C 1 C 1 C 2 C 1 D 2 C 2 D 1 0 1 D 1 0 1 0 J D 1 D 1 D 1 D 2 D 1 D 1 D 1 D i D 1 D 1 D 1 D i D 2 D 1 D 2 D 2 D 2 D 2 D 2 ...

Page 507: ...lly to its nodule configuration code 2 vl is a connon connect point to circuitry shown in FH range select It is connected to the outer conductor of JE 3 All circuit boards are Manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 A2 K1 K6 TOP VIEW 8 7 6 5 on La iav l a A2 U26 TOP VIEW S c h e m a t ...

Page 508: ...Model 8642A B 2514 and above Service CHANGES On the schematic In the upper left portion of the schematic change the A2 part number to 08642 60223 SS 17 8J I1CU ...

Page 509: ...C FM M t J 2 FROM FRONT PANEL 3 W19 I J5 4 U15B FH AC 2 r N f J 5 K3 CBS C86 470U 470U 15V F1 U15A FM DC 1 r 1 6 T 15V FJ TP23 Rl 12 600 1 C87 FM LOW NOISE 5VIF1 B113 562 CR12 C R I 3 SV Fl Rl 14 Ik 1SV PROTECTED i 4 G D POHER SUPPLY AND GND uCEW POWER SUPPLY AND GND r V 15V PTCTD 15VIF1 5VIF1 15V F1 5V F1 L SERIAL PREFIX 2427 ...

Page 510: ... C89 i s y T i o j j 15V Fl V FM IWV HI 1 8 G E AF 16 F FM UNITY GAIN AMP P120 10k R115 5900 RUB 10k v 15V F1 R121 19 6 U19 2 R i 9 i 3480 T C90 1 36P I f J C91 6 TP24 mas 19 6 15V F l C 9 2 T10W 1 V 13 NC 1 15V PTCTD R123 19 6 A X l l BJI Xi X2 VREF I IC93 14_ 6LA J U no vis C94 _L R124 1 19 6 f 15V Fl FMLNA ...

Page 511: ...fit zT m FM DAC BIT 18 ...

Page 512: ...1 i 16 36 dB ATTENUATOR R150 50 wv R151 3 056k Nt 18 dB ATTENUATOR R153 350 K4 15V Fl C109 39p R145 50 R1 J7 1 Lciii io T Tiou 15V F1 V R149 50 1 NOTE 2 U27F 36 dB OUT 7 p N 1 0 R152 50 v w V l 15V F1 NOTE 2 o K5 15V U27E IB dB OUT 6 R154 54 47 V 1 NOTE U27B 16 dB IN 3 y 14 7 ...

Page 513: ... ATTENUATOR R153 350 9 dB ATTENUATOR R156 50 U27E 18 dB OUT S N l l Rl54 54 47 f K 5 J5VIF1 7 1 NOTE U27B is aa IN 3 N 1 4 I o H155 40 K6 U27D g dB OUT s p y i g 6 R158 46 5 R157 31 62 V I NOTE U27C I 9 dB IN 4 p S 13 7 4 o T C137 I O O O P T 1 M i Q I I I 15V F1 jj vT i J6 I W g Q FH O U T z Q CED24 NOTE 2 I F i gur SS17 e 8J 111 e J 111 ...

Page 514: ...F 6 frf HZ 5 ht tf TP13 TP14 TP15 TP1B TP22 TP17T TPB TP11 TP12 Figure 8J 112 SERVICE SHEET 18 INFORMATION ...

Page 515: ...FIG ST ti Slut A d TP15 TP16 TP22 TP17TP28 TP19 TPiB TP2i TP20 TP30 TP23 TP29 TP24 TP3 TP9 TPiO Component Locator ...

Page 516: ...o 3 o w Z3 1el u 0 m V 8 lei 1 053 ISUO in 3 01 OH rrm a en w Fol to u in y i o 3 CO 3 ai u ...

Page 517: ... HI LO INT A2 MODULATION i AOORESS DATA 8 OATA LATCH SELECT HODULATION CONTROL LATCHES SS18 SS SERVICE SHEET Refer ence BIock D i agr am Componen t Coord i nates COMP C54 C79 C129 C130 C131 C133 C133 J i R179 U7 U8 U15 U22 U23 U24 U31 U32 U40 U41 U42 U46 X Y C 3 8 2 C 3 0 3 a 3 0 2 C 1 A 2 B 3 B 3 B 3 B 3 C 3 0 2 0 2 C 3 B 3 C 1 2 D 2 C 3 COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP X Y COMP ...

Page 518: ... changes that apply specifically to its nodule configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 A2J1 CABLE PLUG tiSVdc i v 15VdclflEF 1V 15Vdc 19 20 MSVdc 1V 5Vdc 1V 5Vdc 1V G N D HOD HI LO HOD HI D7 OS D3 01 INT Schematic General Information 8J 112 ...

Page 519: ...ullet under POWER SUPPLY AND GND from SX to FG On the schematic U32 In DATA LATCH SELECT delete bullet OY OSC DC from U32 pin 1 5 and label the line NC no connect On the schematic U32 To the right of DATA LATCH SELECT change U32 pin 15 to bullet OY OSC DC service sheet 16 In the upper left portion of the schematic change the A2 part number to 08642 60223 rev 5JULY85 SS18 8J 112 1 ...

Page 520: ...NG LATCH 5V Fi U31 I j K A r ka K 5 7 MOD D3 MOD D l MOD 04 MOD D2 z HOD 05 MOD D6 7 7 MOD D7 HOD DO Z W 20 11 Gl 1C2 a XC129 JO l 17 14 13 J 20 3 H l y f 5__EN_g_ j B__EiL_3 EN 4 yf 16 15 12 19 EN 5 U32 10 5 V Fl P 17B Ik f SVIF1 aiN OCT EN 1 1 10 EN 6 EH 7 EN fl EN S _EXT INT N C POWER SUPPLY AND GND 14 GD POWER SUPPLY AND GND 5V F1 1 L SERIAL PREFIX 2427A ...

Page 521: ...C oscoc 14 CNT INT EXT H 14 5V Fl MOD D2 HOD DO HOD Dl HOD D7 HOD D6 MOD D3 HOD D5 HOD 04 A 5VAF1 U42 tap G l 11 1C2 13 14 17 IB 2D V7 F OSC D OSC D OSC 0 OSC 0 12 OSC D 15 OSC D 15 OSC D 19 GSC D 5V F1 U7 20 J Gl 11 1C2 K MOD P S sJiPJLfiL v HDD DO v MDD D l HOD D2 HOP P3 HOP P4 H PJ3 P 5 1 2D 13 14 17 I10 ...

Page 522: ...MOD 06 MOD D5 MOD 04 13 MOD 03 14 MOD 02 17 r r M O D 01 2D DAC 0 DAC 7 DAC 6 DAC 5 12 DAC 4 15 DAC 3 16 OAC 2 19 DAC 1 10 fs 7 7 _A TV T7 5V U7 _ii i i Fl 20 X C 1 3 1 Gl 102 A 5V F1 UB fa o lb 11 Gl 1C2 5V _LL i i MOD D6 V M Q D D 7 HOD DO HP P Pj v HOD D2 A3 HOD D3 14 HPA Pi 17 HOD D5 I I 2D I AM 0B6 AM DB7 AM DBO AM DB1 12 AM DB2 15 AM DB3 16 AM DB4 19 AM DBS 10 y MOD D6 V M O D 0 7 v M O D D ...

Page 523: ... A I10 y _ V7 V 5V F1 U 6 MGI 11 I go 1 C 7 9 JO l 1C2 INT AM EXT AM AM DAC BITS v MOO DO b EN 9 5V U24 F1 20 XC132 11 s MOO Dl MOD D2 v MOD D3 v MOD D4 13 v_M0DD5 14 HOD D7 17 HOD D6 18 C 2D 1 NOR AH OBL AM FH DC FH AC 12 INT FH 15 EXT FH 16 19 10 H I L O RESET L CHED16 HI LO AH FH SELECT O 1 6 INT EXT AM dD 16 1 2 O 16 I vKOO 05 1C2 3 vMQO 04 vMOO D6 vHODDS vHOD D7 13 vHQD D5 14 FH AC DC IfJT EX...

Page 524: ... i t ATTENTION Static Sensitive Devices 10 HOD OUT DAC GDi4 l A H L N A GAIN CUD16 SELF TEST SWITCH CONTROL GSD16 HUX SELECT LINES ATT RELAY CONTROL GG 17 FH DAC BITS CD17 J ...

Page 525: ...A FM Ux f I GoLunAw Tirvi b s Module ...

Page 526: ...fiOBO 125 KHZ f 12 500 OR 25 000 COUNTER 45 MHZ 10 Hz AUDIO COUNTER CONTROL LOGIC AND COUNT CHAIN COUNT PERIOD 45 MHZ AUDIO COUNTED 45 MHz OR AUDIO SS19 SS20 SS21 SS22 A6A2 J2 T 3 FM 135 MHZ r ioao 5 COUNTER OUTPUT A6A2 Jl y TIMEBASE DIAGNOSTIC ABA2 BUS J3 HET 45 MHZ SAWR 45 MHZ A6A2 J6 ft VARA A6A2 J5 V AKA2 0 MHz OUT A6A2 J2 J 2 500 KHz FM A6A2 J6 n REFERENCE 500 kHz IF REFERENCE Figure 8K 100 B...

Page 527: ...Service Flfr gfc 0O M o d e 8642A 1 UJCS bJL X Module Test Point Adjustment Locations TP1 TP2 77 Q y 7 y A6A2 AF 8K 100 ...

Page 528: ...NTER AUDIO I J3 P 0 J2 POWER SUPPLY LI B D 8 GD I 4 NES J 10 V 12 COUNTER CLOCK BD8GD 5VIF3 5VIF2 GND POWEB SUPPLY AND GND 6 COUNTER 45 MHZ 20 RF TO TTL TRANSLATION DlVIDE BY 12 500 OR 25 000 COUNTED SIGNAL SELECT TO REAR PANEL J4 EXTERNAL REFERENCE W27 TIMEBASE DISABLE BD4GD POWER SUPPLY AND GROUND GI J7 BD17GD 6 H ZH j P 0 J I B r 2 r i t 15V 5V 4 t 10 11 1 13 14 I COMPARATOR POWER SUPPLY AND GN...

Page 529: ...COUNT PERIOD SELECT COUNT PERIOD 10 Hz OR AUDIO COUNTED 45 MHz OR AUDIO SS19 L GD L O TOfl NTEQRATOfl X TIMEBASE DIAGNOSTICS OSCILLATOR DISABLE LOW PASS FILTER TUNE VOLTAGE L GD o1 EXT REF SENSE p or 1 JI EXT REF SENSE OBD4 n UD POL SENSE I I TIMEBASE I DIAGNOSTIC BUS 1 2 OBD4 SS21 L J r GD 21 DIVIDER DISABLE ...

Page 530: ...GIC CD POWER SUPPLY AND QND 5V F3I GfJD COUNTER CLOCK 45 MHz OSCILLATOR 2iGD f r E _ POWER SUPPLY AND QND 15V F1 5V F2 15V Fl 15V F4 GND COUNTER 15 MHz BUFFER AMPLIFIERS PHASE DETECTOR INPUT mm m DOUBLER 90 MHz BAND PASS AMPLIFIER ...

Page 531: ...I II 5 I I I SS20 I P O 08642 60001 FM 135 HH2 flOBO A T B D 8 I I H COUNTER OUTPUT AT BD8 HET 45 MHZ ugg INPUT MS fl fHHj BD15 W28 SAWB 45 MHz z Q GDBD9 TO HEAR PANEL W23 10 MHZ OUT 7T P O 06642 60001 I i w I REFERENCE J M5BD8 500 kHz IF H26 REFERENCE CMa fl fas BD10 BD7 Figure BK 101 BK 101 ...

Page 532: ...ATA INTERFACE 500 kHz FH REFERENCE A6A1 J5 2 SS SERVICE SHEET ANGLE MOD OUT OF LOOP BANDWIDTH ANGLE MOD IN LOOP BANDWIDTH SHAPER DCFM REFERENCE SS24 250 kHz FM REFERENCE DIVIDER 125 kHz J cu BAi _ _ _ _ _ A6A1 1080 Q FH LOOP DIAGNOSTICS A6A1 J5 ABA1 J2 r ts FH LOOP OUTPUT SS23 AGAl FH LOOP DIAGNOSTICS Figure 8K 102 B D 8 General Information P O A6 MODULE SEE REVERSE SIDE BD7 ...

Page 533: ...8K 102 ...

Page 534: ...OUND 64 CD P o J r I FM 23 j W LOW PASS FILTER AUDIO FOR ANGLE MODULATION F M 2 5 I P TA I COUNT PERIOD 3 SELECT I COUNTEO I SIGNAL 1 5 I SELECT SERIAL DATA INTERFACE I TAKE READING 1 7 STPOPE COUNTER 19 IP 0 J5 X 5 COUNTER OUTPUT I 2 3 H U I POWER SUPPLY AND GROUND 50V F1 15V F1 5V F1 15V Fi GND P O j 5 500 kHz FM REFERENCE MUX SELECT LINES FM LOOP DISABLE FM DCFM SELECT C S K GD J QB SERIAL PREF...

Page 535: ...Ft Sr 8K o3 SU J GD PHASE MODULATION SELECT o o m Li P M uT B w FM OUT FM I N BW FM CROSSOVEH X 2 GD J VREF FM I N BW FM PM LINE SELECT D o ANGLE MOD OUTSIDE BW SHAPER ANGLE MOO INSIDE BW DCFM REFERENCE ...

Page 536: ...MOD IDE BW DCFM REFERENCE C H X X S DCFM REF VOLTAGE C 40 Vdc SS24 500 kHz FM RFFEHENCE 250 kHz FM REFERENCE DIVIDER 125 kHz FM LOOP DISABLE PHASE DETECTOR 125 kHz POWER SUPPLY AND GROUND 125 kHz 0 2 4 p o P O ASSEI ir i i m ...

Page 537: ...flEF VOLTAGE 40 Vdc NTEGRATOR DCFM SELECT I P O A6A2 COUNTER TIMEBASE I ASSEMBLY 08642 60102 VOLTAGE CONTROLLE OSCILLATOR I L4 i L 3 h FH 135 MHZ T 1080 fj2f ISOLATION AMPLIFIER 11 OUT OF LOCK DETECTOR MOD SIG SENSE L VCO TUNE VOLTAGE MUX SELECT LI ...

Page 538: ...GNOSTICS INTERFACE r SS23 COUNTED PERIOO SELECT P 0 J5 P O 08642 60001 9 COUNTED SIGNAL SELECT 250 kHz TTL ZDBD7 FM LOOP OUTPUT Q GD 8 TAKE READING STROBE 7 COUNTER CLK 6 5V F3 GNO SV Fl is io 4 T COUNTER SELECT LINES OBD7 TAKE READING STROBE FM LOOP DIAGNOS BUS a OBD7 COUNTER CLK GS BD7 POWER SUPPLY LINES CDBD7 p o FM LOOP DIAGNOSTICS BUS GDBD4 COUNTER OUTPUT COUNTER OUTPUT 2i TH BD4 F i g u r e ...

Page 539: ...3 TP2 Figure 8K 104 SERVICE SHEET 19 INFORMATION ...

Page 540: ... Ull 1 fCSOl I f f i n C76llCB5l EE2ZI IC77lfC63l Ul U23 U27 U33 1 1 1 1 U19 U24 U2B I 1 1 U20 U25 U29 U34 T2ffl ES5D fC79l 1 I 1 y JI OD H6B Qj O 0 C39 IkiJ 1 C69 cea C21 02 1 IR42 1 H21 LB jEpi J 06 C27I I XI X2 I U31 U30 C4T1 1 I l l Component Locator ...

Page 541: ... o C96 fl2 J7 EH U14 COT LIB L19 C91 CB7 U15 f J i yy t i lL5l Q 2 C89 C8B C2hi fl42 H43 R21 IC28t L a C 15771 5 Q6 ja jg um L 3 7i y E 3 5 l R36 1 J jnnG 4 O TO as t L 3 l Yi A6A2 TIMEBASE FREQUENCY ADJ or ...

Page 542: ...MP C50 C5i C52 C53 C54 C55 C56 C5B C59 CB4 C70 C74 C79 cai CB2 C93 C95 J2 J3 J4 L20 Lai L22 R50 R51 R52 R53 R54 R55 R59 R60 R63 X Y A 1 A 1 A 1 B 1 B 1 B i B 1 A 2 A i A 3 B 3 B 3 B 3 A i A J A 3 B 1 A 2 A 1 A 1 B 3 B 1 A 1 A 1 A 1 A 1 B 1 A i B 1 B 3 A 2 A 1 COMP TPl TP2 Ul U2 U3 U4 U5 U7 U16 U17 U18 U22 U32 U33 U34 U36 XrY A 2 A 3 B i B i A 1 B 1 B 1 A 2 A 2 A 2 A 2 A 2 A 3 A 3 B 3 A 2 COMP X Y ...

Page 543: ... module configuration code Hhen servicing a module note any changes that apply specifically to its module configuration code 3 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph B 3 Schematic Genera Information 8K 104 ...

Page 544: ...cate US and remove the active low indicator from the input line labeled pin number 14 In the left portion of DIVIDE BY 12 500 OR 25 000 next to U18B remove NOTE Also in U22A remove the active low indicator from the input line labeled pin number 2 Do the same for U22B pin 14 U32A pin 2 and U32B pin 14 SS19 3K 104 1 ...

Page 545: ...03SS 9 uxd pajaq j 3UTJ nd no sq UJOJJ JoiTiaipui A OJ 3AT OE aij aAotuaj puB ZLf s Mi o i o o i 10 XM03 jo uoiijod jjaj auiaijYa am uj I I i S39NVHO 30IAJ3S n VZt9S PPOJM ...

Page 546: ... 11 13 7 ID 1 C1 1 mi NC R53 316 _ M R54 100 5V F2 V L C52 0 1H 5V F4 15 1 14 NC 3 C51 5VIF3 J 0 COUNT PERIOD SELECT 9 B COUNTED SISNAL SELECT COUNTER AUDIO W21 14 TF 93 J 3 U4 9 _2jJ _ b NC i JLL _l fc 15 XC53 i ECL VCC TTL VREF VEE 12 13 X C54 J f o iw T I V 5V F3 POWER SUPPLY LINES 4 J2 24 7 E A 10 5V1F3 POWER SUPPLY AND QND TP2 5V F3 5V F21 T L21 1 2Jt Ic58 I T 3 3 U T 5V F31 C95 J33K L22 1 J ...

Page 547: ...DE BY 9 U2 5V F4 16 1 C56 J 0 1 1 li 10j HI LOAD M2 COUNT M3EUP M4 D0WN VCC CTRDIV16 5 GB 2 3 5 6 C 7 2 4 5 B 3 5CT 15 4 5CT 0 1 7D 2 4 B _15 14 13 NC NC 12 11 NC U5 rt 141 11k 15 10 Gl M2 M3 G4 C5 ifl SUPPLY GROUND 20 COUNTER 45 MHz 22 GI RF TO TTL TRANSLATION 120 C79 _ 10OOP I R59 6 1 9 NC C74 2 K 5 V F 3 U34 3 9 VCC TTL lOA _U 14 _iS_ 1 VL JECL VREF VEE IS 13 O l J 5V1F3 NC ...

Page 548: ...l J i J j j 5V F4 6 Vcc Gl CTRDIVIO H2 1D0WN 2 CT D Z6 M3 UP 3 CT 15 Z6 M 2 1 3 G4 6 1 4 C5 12 NC 15 10 J 5D 12 4 IB NC DIVIDER ENABLE 2oGS D1VIDE BY 12 500 OR 25 000 5V F3 w HBO Ik 125 kHz m D I V I D E BY 1 2 5 0 0 SELECT U 1 8 B NOTE 4 _ 6 11 NC iO U7D icy1 U lfD U18C SO 4i NC NC C74 J T 0 i 5 V I F 3 ...

Page 549: ...7D If0 U18C HO NC ID NC 10 11 DIV 2 C DIV 5 jiCT CT 2 2 NC NC A DIV 2 DIV 5 CT NC NC NC U22B r CTR CT 0 NC 15j J_2j DIV 2 DIV 5 CT 13 NC NC NC 5VIF3 t i l U32A T l 6 I vcT p CT 0 b 1 4 1 DIV 2 X C9 c DIV 5 0 CT NC NC U32B AAi 3 5 K T CTR CT 0 _i2j DIV 2 13 DIV 5 CT 11 10 NC NC COUNT PERDID SELECT AUDIO COUNTED SIGNAL SELECT AUDIO U36D 9 U33D 45 MHZ U16D J l U33C 45V F3 C70 X 14 U33A ...

Page 550: ...p 0 08642 60001 J2 I I FM 135 MHZ Tioao 5 CD2 3 i COUNT PERIOD 10 Hi OR AUDIO 77 20 COUNTED 45 MHZ OR AUDIO GD20 fc ATTENTION Static Sensitive Devices __J SS19 Figure 8K 105 8K 105 ...

Page 551: ...U7 US LIB U10 ESH3 o s a EDSDELH icTHfcEB TP2 Figure 8K 106 SERVICE SHEET 20 INFORMATION Co ...

Page 552: ... nren fcTBlfcsal E52H rcTTIfcell UI U23 U27 U33 1 1 1 I U19 1 1120 U24 1 U25 1 U28 1 U2S U34 cm 1 CH J l in m u JDlR6E L2 i C _J _j v in m o r O u u R6B Qi O l O C39 LL5J CSS 02 CBB C21 Q R42 R43 R21 fC27l D flfi 1 XI X2 U30 1 U31 JC42 1 SI Component Locator ...

Page 553: ...F Sic toC I m ICR2 I TCR4 S B CB9 csa C39 lL5j 0 2 C2 R42 R43 R2i C27l Go 03 R35 C80 r n13 o Q8 C15 IL3_ Y l EO A6A2 TIMEBASE FHEQUENCY AOJ ...

Page 554: ...5 SERVICE SHEET rp FM 135 MHz i 1080 COUNTER OUTPUT TIMEBASE DIAGNOSTIC BUS HET 45 MHz SAKR 45 MHZ 10 MHZ OUT 500 KHZ FM REFERENCE 500 kHz IF REFERENCE Reference Block Diagram Componen t Coordinates COMP C60 C61 C62 C63 CS5 CBS C67 C68 CBS C71 C72 C73 C75 C76 C77 C78 C94 J2 R56 R57 R5B R61 R62 R6B U7 UB U9 U10 U i l U1B U19 U20 U23 U24 X Y B 2 B 2 B 2 B 2 A 2 B 3 B 3 B 3 B 3 A 3 B 3 B 3 A 2 B 2 B ...

Page 555: ...s that apply specifically to its module configuration code 2 All circuit boards are nanufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 8 3 3 A6FL2 is an array of feedthrough filters passing through the center of the module to make connections between two 2 printed circiut boards Schematic General Inf...

Page 556: ...he line labeled X3 pin 9 turns on the switch Label the element with pins 15 and 4 with a 4 Label the element with pins 6 and 7 with a 2 Label the element with pins 3 and 2 with a 1 On the schematic U31 In INTEGRATOR add the symbol for an operational amplifier same as U31B and U31C anywhere in the white space Designate it U3 ID Number the pins as follows Pin 1 Output Pin 2 Inverting input Pin 3 Non...

Page 557: ... 19GZ 24 eg e y I p o J2 I POKER SUPPLY AND GROUND 19 AF CONTROL LOGIC 5V F3 iOk f U7B 5 5V F3 R66 42 2 14 X C65 JO JJi TL C 9 4 S1 J 1 8 A T s EDGE LATCH U8B 11 U UtJ i jj ID t ci R s Le POWER SUPPLY AND GND 5V F3 FLIP FL 5V IF3 U9A T 3rC60 Us 0 1 U9B U9C 3t U9D 13 11 DIVIDER ENABLE I AH J9 IHT ENABLE REn SERIAL PREFIX 2427A 5V F3 ...

Page 558: ... RX CX fi 1 TL cx RX CX fi T XC62 J0 1 13 NC NC 12 NC 5V F3 U11 14 C77 f X B20p 5V F3 s i 1 5 X R57 9090 Ah 3h X C7B F 8 2 0 p 5V F3 i X R5S 9090 LOAD 1 9 K JO Alt C63 16 VCC 1 TL CX RX CX G 1 TI CX RX CX J 0 1 W 13 L PAD J 4 LOAD L 5 CLEAR 12 CLEAR L COUNTED z 45 MHz g O R AUDIO u 19 AK COUNT GATE U33B 1 5 o 5 V I F 3 5VIF3 R 61 5VIF3 ...

Page 559: ...U27 Ah Cl C T 0 VCC CTR L XC69 NC NC NC NC t DIV 2 ID St Jli DIV 8 10 01 0 1CT Cli 2 U 4 U26 42 5VIF3 t XC6B U23 i l 4 _ Jo l _ii _12h VCC CTR Cl CT 0 h_ NC i D I V 2 ID NC NC NC 11 Si EK nTV p 1 t11 r ti 11 VCC SRG8 Gl SHIFT C2 1L0AD 1 1 C3 JL CH NC iU 11 12 13 14 _c 2D NC U28 5V F3 T 11 1 C 6 7 U36F U36E 12 04 JUh VCC CT 0 CTRDIVJ6 CT I ...

Page 560: ... gK o 7 4J c g 5V F3 ...

Page 561: ...n 6 012 li_JUi 10 OH 9 015 J flifi Q9 Al Q10 it an IX JU2 14 90 1 014 11 Jill 3D 2D 1 SERIAL DATA OUT SWITCH 5VIF3 V L J M _ 1 _ _ DATA OUT E N T I T 14 U20A U20B U200 S p o J2 NC U20C o o fc ATTENTION Static Sensitive Devices P O 08642 60001 I 1 I A6FL2 5 COUNTEH OUTPUT QD i L J i i i i i _j SS20 Figure 8K 107 8K 107 ...

Page 562: ...TP2 Figure 8K 108 SERVICE SHEET 21 INFORMATION Comp ...

Page 563: ...G U9 U10 u i i 1 fcBol mss IIC76JICS21 EEZ3 CTTHCETI U1S U19 1 U20 U23 1 U24 U27 U33 i i U25 1 U2B 1 U29 U34 irgoi iR5s i icTal 1 p Jl r DD Ilee 1 R6B Ql EH O C39 PMD C89 CB8 C21 B42 P4 R21 jcaaV LBCSPV C27l n I XI X2 U30 1 U3J HU Component Locator ...

Page 564: ... 3U 4 C96 I up CB9 CB8 C21 IH42 1 F 3 R21 icaaj LB fF IC271 Q6 I Bang o D3ZJ _ Yi A6A2 TIMEBASE FHEOUENCY ADJ or ...

Page 565: ... ca C9 C20 C21 C22 C23 C36 C37 C3B C39 C40 C41 C42 C43 C44 C45 C85 C86 CS7 CBB CB9 C90 C31 C36 C97 X Y C 1 C 2 C 3 C 1 D 3 C 3 D 3 C 2 D 2 D 2 D 1 C 2 C 3 C 2 D 3 D 1 C 2 D 3 D 3 C 3 D 3 D 3 C 1 C 2 C 2 D 2 0 2 C 1 C 2 C 2 C 2 COMP CRl CR2 CR3 CR4 CR5 CR6 CR7 CR9 FL1 FL2 FL3 FL4 FL5 FL6 J l J7 L4 L5 L6 L12 L13 L14 L17 L18 L19 L23 L24 L25 L26 Ql 02 X Y C 2 C 2 C 3 C 2 C 3 C 1 C 3 C 1 D 1 D 1 D 1 D ...

Page 566: ...nges that apply specifically to its nodule configuration code 2 XI and X2 are pads on the ciruit board No connection between then is provided 3 All circuit boards are Manufactured using a hot air leveled process These boards require extra care Mhen replacing components Refer to General Service Information paragraph 8 3 CABLE PLUG TO A6A2 J1 5V GND 15V DIAGNOSTIC BUS Schematic General Information 8...

Page 567: ...1 COHP 1 CB7 6 C9 X O OVJ T 15V IF2 F U15 JJL D l V I D E B Y 2 5V Fl 5V F1 R41 Ik NC 0 2 5 7 12 NC U1 A T J_b 3 CIS Io oiw r U14B iSLt 12_ Ji 3_t s 0 R _9__ J__ N C NC POWER SUPPLY AND QND L4_ Q2 I L5 3U 15V Fl C39 r Lie ay C90 R64 1330 J O I H J o i y L23 3M CS8 JlOU L5_ L4 3M 15V F1 15VIF2 415V F3 5V Fi L12 3JJ m J C22 4 c 2 1 C9B T 0 1JJ J 0 1W 10 J _ 5V 1FS m 01 1 LB 3JJ s 15V F1 L19 3W RB5 1...

Page 568: ... NC NC iC40 TO OiJJ 14 V 3 R4 L13 19 6 0 1M 1 C36 T JOOp U21D PHASE DETECTOR T l U21B Cflli BVIF1 _ C23 I 1 M SAM BR XC2 OlJJ R3 100k PHASE DETECTOR INPUT EXTERNAL REFERENCE DETECTOR U35B Xt POWER SUPPLY AND GND GD22 5V Fi R14 k 100k I JSL AX _U_h C43 0 0 Hi I s R RX CX CX L17 3 f LC86 j i ...

Page 569: ...Fl it foi sUt HrS ...

Page 570: ... 8l o1 J U V 4S DIVIDER DISABLE L GD22 TICS CR7 fll5 i960 R16 Ik 5V F1 U35A J_t 5V Fi H17 133k w is C6 100 j V LI R RX CX CX _ia_ NC L14 I C85 JO iM IU ...

Page 571: ...LTER c w B12 100k m i 20k 3 15V F1 R40 5110 C3a O OI JT 1 C44 1 C44 O O i y T R19 5110 1 TIMEBASE FREQUENCY ADJ R13 5110 TUNE VOLTAGE C45 0 01M Tca o oiy QDzz EXT REF SENSE P 0 J l 001 SENSE n 1 GD EXT HEF SENSE 10 1 0 CO CO CO CO TIMEBASE OIDIAGNOSTIC BUS 1 2 lol U _J SS21 F i g u r e 8 K 1 0 9 8 K 1 0 9 ...

Page 572: ...D ue U9 IC60l ffiggl IT76l C62 E52Z3 IC77llC63l TP2 Figure 8K 110 SERVICE SHEET 22 INFORMATION ...

Page 573: ...fgn fC76lJC62l E C U C77llC63l D U1B U19 1 U20 U23 1 U24 1 U25 1 I U27 1 U28 U33 1 I U29 U34 tr tn isssn IC79l i y fcTTl R24 CB4 IR33 ED Q7 Jsli jfCSBl Jl in u Dl 16B IV _ _ i v en U h 0 o u R6B 01 E 1Q C3S WEB R42 R43 R21 LBf c fcTTT U30 I U31 rc4n Component Locator ...

Page 574: ...f 0 tK tIO A6A2 TIMEBASE FREQUENCY ADJ ...

Page 575: ...Di agram Component Coordinates COMP C7 cio C l l C 12 C13 C14 C15 CIS C17 ClB C19 C A C25 C26 C 7 C28 C29 C30 C31 C32 C33 C34 C35 C46 C47 CdB C49 CBO CB3 CB4 C92 C9B CRB CR10 CR11 X Y B 2 0 2 D 2 D 2 D 3 D 2 D 2 C 2 B 3 C 2 B 2 C 2 C 3 C 3 D 2 D 2 D 1 D 2 D 1 C 3 0 2 0 1 0 1 B 2 B 2 B 2 B 1 D 2 B 2 B 3 B 1 0 3 D 2 B 3 B 2 COMP J2 J5 J6 J8 J9 LI L2 L3 L7 L8 L9 LiO L l l L15 LIB Q3 Q4 Q5 GB 07 G8 R2...

Page 576: ...cally to its module configuration code 2 All circuit boards are manufactured using a hot air leveled process These boards require extra care Mhen replacing components flefer to General Service Information paragraph 8 3 3 A6FL2 is an array of feedthrough filters passing through the center of the module to make connections between two 2 printed circuit boards A6A2 Q3 Q7 TOP VIEW 4 E 3 B 1 CASE 2 0 S...

Page 577: ...20p T C14 0 01W Yl 1 J j BUFFER AMPLIFIERS 45 MHz LEVEL ADJ C12 J6BP 023 3480 CR8 L3 2 1 U Ll 0 1 3 y L2 30n Icio To oiy 15V F1 POWER SUPPLY AND QND s_ 15V FJ 5V F2 15V Fl 15V FA 1 C35 X f H37 0S5 R3B 1780 C34 X o oiy T R35 5 1k c a o I G3 3 C33 X o oiyj R43 4220 C9E O OiW 06 3 R42 3160 C32 X o oiyT V 15V Fl 07 3 H33 R34 1 47k f 6190 15V F4 15V L SERIAL PREFIX 2427A ...

Page 578: ...rifr k ini su o r ...

Page 579: ...PASS AMPLIFIER 45V F2 H45 I960 C19 lOp C48 LIB 0 1JJ X C47 T lOOOp C4B lOp Q5 j e 3 FUB 19B0 R44 196 CB3 j 100p V 90 MHZ DIVIDE BY 9 5V F2 C92 IT O l J U12 13 12 11 10 V 1 S1 J B VCC VCCO TTL VCC ECL H57 14 7k 15 DIV B CT B 1Z2 15 DIV 9 CT S 1Z3 ECL T7L VEE VBE R25 Ik ...

Page 580: ...W 5K in SU 4 4s M H z TTL BUFFER 5V U 6 8 r i 1 0 M H z F2 BAND P A S S 4 C24 FILTER I 0 0 1 L l l C49 i4 v 31 ay iop U6C U6D U6E 6 8 sh 0 4 AT Stati ...

Page 581: ...45 MHz FF f5V 3 i h ER F2 1 7 N B ylO 10 MHz BAND PASS 24 FILTER 0 1 L l l C49 2 1 9 p lOp i i ATTENTION Static Sensitive Devices r JS V fi MIZ Q GD 25 TO REAR PANEL H23 10 MHz OUT e QD P O 08642 60001 p o NOTE 500 kHz J2 500 kHz FM REFERENCE o A6FL2 I JOTE 3 f I L a 1 T 1 5 B A 2 3 Li U 1 500 waa REF gi j KIog 9 B S 3 0 500 kHz _ J 500 kHz IF W28 REFERENCE _l SS22 Figure 8K 1 11 8K 1 11 ...

Page 582: ...v5U reiBl FM CROSSOVER ADJ El LOADED ON Q7 BASE LIO MOUNTED ABOVE R92 r E FM SENSITIVITY ADJ TP7 TP6 Figure BK 112 SERVICE SHEET 23 INFORMATION ...

Page 583: ...6 U J U 5 El LOADED ON 07 BASE FM CROSSOVER DC FM CTB ADJ FREQ ADJ TPi SHAPE ADJ TP3 D O MOUNTED ABOVE R92 TP7 TPE TP8 TP2 TP4 Component Locator ...

Page 584: ...TPB TP2 TP4 ...

Page 585: ...P C5B C57 C5B C72 C73 C74 C75 C77 C79 CB2 CSS C84 C85 C86 CB7 CBB CRi CR2 Cfl3 CR4 CR9 CR10 El FL1 FL9 F L U FL12 FL13 J l J2 J3 J4 J5 X Y B 2 B 3 B 3 A 1 A 2 B J 6 3 D 1 D 2 A 2 A 1 A 1 A 2 B 2 D 2 D 1 A 2 A 2 A 3 A 3 B 3 A 2 B 2 D 1 D 1 D 1 D 1 D 1 D 1 A 1 A 1 B 1 D 2 COMP K3 LI L2 L3 L4 L7 L9 Ql Q2 Q3 04 Q6 07 QiO an 015 BJ R2 R3 B4 R5 R6 R7 RB RIO R l l R13 R15 R16 R17 R18 R20 R21 R23 X Y A 3 ...

Page 586: ...is notched A6FL2 is an array of feedthrough filters passing through the center of the nodule to make connections between two 2 printed circuit boards Do not touch guard trace on solder side of board with solder iron All circuit boards are nanufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Infornation paragraph 8 3 A6A1 K3...

Page 587: ...CONTROLLED OSCILLATOR change the value of the following components to these new values C13 3 9p R4 Ik R5 Ik 2S50A nd abbvet On the Component Locator C90 In grid location A l add C90 to the left of C2 and just above CR10 following the contour of the EMI strip In Component Coordinates C90 AddC90A l On the schematic C90 In the VOLTAGE CONTROLLED OSCILLATOR add C90 from 1 5V Fl to ground M SS23 8K 112...

Page 588: ...P O A6A1 FM VCO ASSEMBLY 08642 60101 I 250 kHz 500 kH2 FM REFERENCE 22 GD SEHHL PREFIX 3427A ...

Page 589: ...1 Q15 1 30 T O OlM o R29 2 6 1 0 CFM HEF VOLTAGE 1 40 Vdc 2 GD INTEGRATOR ANGLE MOD INSIDE BW 24CED H23 2370 125 kHz P O J5 I P O A6A2 COUNTER TIMEBASn I ASSEMBLY 08642 60102 I i r 3 I I fM 135 M H Z 10BO FM LOOP 135 MHz HZ O l 9 19 AA Q 135 MHz J3 SOLATION AMPLIFIER D25 lOOOp L T Z Jj R20 601 15V J C23 BIB To OliJ 6 0 T C73 Fl T 0 01 i WER IPPLY 0 END 24 ...

Page 590: ...30 R57 90 9k C52 0 15p I f 5V Fl J C53 Jo 15V Fl CR9 ATION AMPLIFIER DCFM SELECT 24G 5V F1 _6 7J iji H U 1 1 B I R85 100k tO RB6 B250 VOLTAGE CONTRC CB 5 6p C2 10C C7 13p V RB0 51 1 TP7 r SHIELDED V C75 T lOOOp I w _ C17 C16 1 T IOOOP jooop T C73 15V Fl T 0 01M OUT OF LOCK DETECTOR 5V F3 H25 110 R2S 51 1k fc ATTENTION Static Sensitive Devices C36 10 U U4C 5VIF2 10 H2B 383D ttf R27 51 1k ...

Page 591: ...R27 51 ik ...

Page 592: ...Figure 8K 113 8K 113 ...

Page 593: ...3bt oj FM CROSSOVER ADJ El LDADED ON Q7 BASE FM SENSITIVITY ADJ TP7 TP6 Figure 8K 114 SERVICE SHEET 24 INFORMATION Co ...

Page 594: ...ski a 4 FM CROSSOVER DC FM CTH ADJ FflEG ADJ El LOADED ON Q7 BASE L10 MOUNTED ABOVE R92 TP7 TP6 TP8 TP2 TP4 Component Locator ...

Page 595: ...FIG fc U l TPB TP2 TP4 r ...

Page 596: ...1 B 2 B 2 B 2 S 3 B 3 C 3 0 1 C 2 C 1 B 2 0 2 B 2 B 2 B 2 C 3 C 3 1 D 3 C 3 D 2 B 1 B 1 C 3 0 1 D i D 1 D 1 D 1 D 1 D 1 0 1 D 1 COMP K3 LB L10 Q9 012 Q13 014 R32 R34 R35 R36 R38 R39 R40 R41 R42 R43 R45 BAG R47 R4S H49 R63 R63 R64 R65 R56 R67 RBB R69 R70 R71 R72 R74 X Y C 3 0 2 B 1 B 3 B 2 B 2 C 3 B 1 B 1 B 2 B 1 B 3 B 2 B 3 B 2 B 3 B 3 B 3 C 2 C 2 C 2 B 1 B 2 B 2 C 2 C 2 B 1 B 3 B 2 C 1 0 1 C 1 C ...

Page 597: ...through the center of the module to make connections between two 2 printed circuit boards 4 Hfll Q14 R70 071 R75 and B7B are part of FM PET Kit OB642 B0016 5 Do not touch guard trace on solder side of board with solder iron 6 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph B...

Page 598: ...ght portion of the schematic where P O J 5 is shown along the assembly border change pin 10 to 12 and change pin 12 to 10 In the SHAPER portion of the schematic delete the ground coming from 15V Fl located in the lower left portion of the GAIN TEST FIXTURE SS24 rev I5MAY86 8K 1 14 1 ...

Page 599: ...CDUNT PERIOD SELECT n COUNTED SIGNAL SELECT FLfl TAKE READING STROBE I FL6 Eh COUNTER CLK I FL5 5 P 0 1 J5 I FL4 N S 5V F1 U17_ ii_ _9 SRG8 5 c i JZ G ID J 5V Fl U18_Jk U iC2 10 11 12 13 5V F1 U19A 3 T C71 o iw _lt _lia R77 Ik w 5V Fl U C1 IK S R J NC a 2D J l 17 f U19B ii u Ubk C1 12 JJ _llh POWER SUPPLY AND GND 23 HU L SERIAL PREFIX 2427 POWER SUPPLY AND QND j L 5QV F1 r 15VIF1 5V Fl r 15V x jm ...

Page 600: ...s AUDIO FOR ANGLE MOPUL ATION ...

Page 601: ...B W 5 EN XI X2 VRef D i FM OUT B W 3 FM IN B W LOW FflEQUENCY FEEDBACK C43 R43 1 25U 75K R38 C42 1 1M 0 082 J C44X O IWT 15V Fl SUMMING AMP R34 I960 J J3 T GUARD 1 TRACE CROSSOVER INTEGRATORS C41 15V F1 U7A 2 Jo iw P FM CROSSOVER ADJ 3 C3B 5 ADJ TPB t v m s 7 R35 R36 _ _ i i 1 3160 IK V t PM IN B W i 15V Fl 14 15V Fl ANGLE MOD OUTSIDE BW GD23 ANGLE MOD INSIDE BW ...

Page 602: ...VRef n lew 3 H 7 1 2 15V Fl XL ANGLE MOD OUTSIDE BH ANGLE HOD INSIDE BW HY 23 SHAPER JHAPER TEST FIXTURE GAIN TEST FIX TP3 ANALOG FET SWITCHES P O 15V F1 U 1 4 jjcii 10 15V F1 9 H7Q R71 i NOTE 4 NOTE 4 j s I 014 v MPI I S T E NOTE 4 R84 lOOKl OCFM REFERENCE ...

Page 603: ...Fl 9 4 GD 19 CD 19 TAKE READING STROBE GQ 20 COUNTER CLK 2D 20 SS24 Figure 8K 115 8K 115 ...

Page 604: ...fl j SA WR Loop Modu 1 ...

Page 605: ...LATOR 10 A7A1 Jl SELECT LINES s _ SAWR 45 MHz SS SEflVICE SHEET OSCILLATOR SELECT r r i i A7A1 4 p SENSE 2 SAWR LOOP SENSE 1 DIAGNOSTICS SS25 SS26 A7A1 SAWR OSCILLATOR OUTPUT A7A1 Jl 4 e 14 SAWR SENSE 1 2 1 SAWR LOOP DIAGNOSTIC BUS F i g u r e 8 L 1 0 0 B D 9 General Information ...

Page 606: ...Service F Model 8642A I Module Test Point Adjustment Locations R33 DC VOLTAGE COMPENSATION ADJ 8L 100 ...

Page 607: ...ervice CHANGES All Serial Prefixes On the Assembly Locator A7 Make the following changes to the module immediately to left of A 9 label it A7 write A7A1 inside the module outline delete the A9 information BD9 81 100 1 ...

Page 608: ... A B SAWR B SAWR 45 MHJ W28 BD6 AT Q CUD POWER SUPPLY AND GND 65 CUD J2 K p o JI RF TO TTL TRANSLATION AND DIVIDE BY 2 PHASE DETECTOR 2 1 3 5 7 9 11 13 15V 5V t 15V GND L POWER SUPPLY AND GND NTEGRATOR X I ACQUISITION SIGNA BEAT NOTE SENSE GD 6 LOOP LIMITING AND ISOLATING AMPLIFIERS SEHIAL PREFIX 2427A ...

Page 609: ...TION SIGNAL 5ENSE BEAT NOTE SENSE LOOP L I M I T I N G AND ISOLATING A M P L I F I E R S y LOOP IF SENSE LOW PASS F I L T E R S SAWfl LOOP DIAGNOSTICS UHF REFERENCE LOOP IF TUNE VOLTAGE SENSE SS SAKfl LOOP DIAGNOSTIC BUS 11 ...

Page 610: ...OSCILLATOR SELECT 7 MD3 OUJ 25 POWER SUPPLY AND GND 742 5 MHz SAWR OSCILLATOR 787 SAW OSC QD lAGNOSTIC BUS GD SS25 ...

Page 611: ...Ts W E OUJ S H O OUJ 742 5 MHz SAWR OSCILLATOR JUJ HID inz OUJ 787 5 MH2 SAWR OSCILLATOR 832 5 MHz SAWR OSCILLATOR OUTPUT L IWITING AN ISOLATION AMPLIF IE ...

Page 612: ...ILLATOR OUTPUT LIMITING AND ISOLATION AMPLIFIERS H J3 n ATTENTION Static Sensitive Devices SS26 52 P 0 Jl SI SAWR OSCILLATOR A7W25 OUTPUT H CUD 0 GDBD9 SAWR SENSE 1 2 6 12 B 5BD4 SAHH LOOP DIAGNOSTIC BUS BH BD4 B09 Figure 8L 101 8L 101 ...

Page 613: ...DC VOLTAGE COMPENSATION ADJ Figure 8L 102 SERVICE SHEET 25 INFORMATION ...

Page 614: ...UHF OUTPUT LEVEL ADJ DC VOLTAGE COMPENSATION ADJ Component L o c a t o r ...

Page 615: ...1 10 81 loot UHF OUTPUT LEVEL A D J A7A1 ca t o r ...

Page 616: ... C 2 C 2 C 2 C 2 B 1 8 1 B 1 B 1 B 1 A 1 B 1 COMP FL1 FL2 FL3 FL6 FL7 FL8 FL9 FL10 F L U FL12 FL13 FL14 J l J2 L I L2 L6 L7 LB L9 L10 L l l L 1 2 L13 LJ4 L J O l L102 L103 L104 L105 L109 112 L113 X Y D 1 D 1 D 1 D 1 D 1 D 1 0 1 B 3 B 3 B 3 B 3 B 3 D 1 A 1 B 1 A 1 B 1 A 1 a I B 1 A 1 A 2 S 3 B 3 B 1 C 2 B 3 D 1 C 2 C 2 B 2 C 1 B 1 COMP 0 1 Q2 03 Q4 Q5 06 0106 0107 HI R2 R3 R4 R5 36 R7 RB R9 RIO A l...

Page 617: ...hat apply specifically to its Module configuration code 2 H4 N13 are printed circuit trace inductors 3 All circuit hoards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Infornation paragraph B 3 A7A1 04 106 107 TOP VIEW 4 E MB C 7 3 0 5V 2 E CABLE PLUG TO A7A1 J1 SNO 15V 15V S2 SAWR B Schematic General Information...

Page 618: ...ION change the value of A7A1L10 to 1UH 4 19A and abu r On the schematic A7A1U1 Replace part of SS25 with the partial schematic showing RF TO TTL TRANSLATION found on page 8L 102 3 2SI3A and ib V On the schematic Replace the appropriate portion of SS2S with the partial schematic on 8L 102 5 In INTEGRATOR change UlO pin 13 U9A pin 8 and R33 pin 1 to 15V F10 revlSOCT35 SS25 8L 102 1 ...

Page 619: ...2 RF TO TTL TRANSLATION DIVIDE BY 2 C3 13p RIO Ik 5V F3 3y 5V F3 5VIF3 U1C U1B RB 5110 TLC4 T 0 0 iU l HI 50 L i 6 19 h a u h 10 3 r J U1D U1E U2 Jj S 0 R 4 12 11 i l A X CB T o oly J 4 i v 5 NC N C P 0 FIGURE 8L 103 2449A and above SS25 8L 102 3 ...

Page 620: ...Y 08642 60203 r I J2 2 P 0 Jl 15V RF TO TTL TRANSLATION 5V F3 DIVIDE BY 2 v 5V F3 5V F3 C3 J3P RIO Ik m HI 50 L10 0 1 J U1C POWER SUPPLY AND QND 15V LOW PASS FILTER U_ 15V F1 L103 l 15V F2 J C129 5V LOW PASS FILTER CHANGES TO FIGURE 8L 103 251 3A and above SS25 8L 102 5 ...

Page 621: ...MBLY 0 8 6 4 2 6 0 1 0 3 r 45 MHt SAKR M28 22 GD Q 5 I J2 RF TO TTL TRANSLATION DIVIDE BY 2 C3 13p RIO Ik 5V F3 J i i l J 3 J 5VIF3 5VIF3 U1C Bl 50 L10 O lfJ 1MB 3p RB 5110 3 C4 T o o i j 14 1 7 S 11 13 U2 JLUs 2 A D C R JJU 12 51 1 3 14 CB O Oitf F NC NC SERIAL PREFIX 2427A ...

Page 622: ...15V F4 15V F7 C144 X 470p _ 4 im 15V 1F5 N C145X 4 7 0 p T 14 ci i OJH C9 X 470p _ 15VIFB LB C136X 47p __ 15V tF5 L105 3 C13B 470p T r 15V 1FB 15V IFB C 5 1 4 7 0 p T 15VIF9 L113 5VIF1 C135 X 470p T C133 I 470p T L112 IQOn C132 X 470p T 15V F10 5V Fi L2 FLll CIS T 0 0 ly 4 5V F2 Li 5 _ 5V F3 15V IF2 _9 15V F3 GND POWER SUPPLY AND GROUND GD2 ci 47 ...

Page 623: ...2 4 r y_ui_y_ n 1 7 8 0 O OBBU g w R22 348k w n 7 l ICMPS l_ki L R31 619 15V F3 JU2 15V F7 R30 4220 U9A 2 R33 100k fi 3 15VIF7 DC VOLTAGE COMPENSAT 2 A A D J v C W R32 110k 15V F2 TLC30 TO OiM 1 XC25 To Oi J 15V F3 E 1 R2B Ilk LOOP ACQUISITION R27 196k U9B R25 Ik R26 10k ACQUISITION SIGNA BEAT NOTE SENSE LOOP LIMITING AND ISOLATING AMPLIFIERS 15V FB 15VIF9 15V F10 C10 47p C131 4 7p R13S 100 ...

Page 624: ...k ACQUISITION SIGNAL SENSE BEAT NOTE SENSE LOOP JF SENSE 15V F10 R146 6B1 RUB 100 VR106 5 2V H147 1470 UHF REFERENCE LOOP IF C131 4 7p HI3B 100 26 r l C 2 6 1 L12 i 2U L13 1 2 W C26 T4700p _ C27 T 4700p C2B 47p lc2S J47 p TUNE VOLTAGE SENSE SAWR LOOP DIAGNOSTICS 5V F2 R2 100k USD C6 O OltJ C21 0 022 5V F2 R3 R14 100k 5V F2 R15 U8C 10k 11 OSCILLATOR SIGNAL DETECT 5V F2 R3B 51 1k CR10 t4 C19 22p R37...

Page 625: ...F 6 SL J03 SAWR _ SENSE 1 2 SAWfl LOOP i DIAGNOSTIC 1 Q 1 BUS SS25 gure 8L 103 8L ...

Page 626: ...Lfly A 2OC30 DC1 Q45 J a ofl DC VOLTAGE COMPENSATION A D J Figure 8L 104 SERVICE SHEET 26 INFORMATION ...

Page 627: ...DC VDLTASE COMPENSATION ADJ Component Locator ...

Page 628: ...ADJ o D H138 C1400 B141Q IV I V R Oc D EBa 1058 Q104 JI flU teal 013rasl e n J IAP a rno7i Cl D C14B K nioil R107C3 na_j _aioi _ BTO4 wi _ cm Qci47 VR 105 C 3 g B113 CA106 5 u l R47 n U6 QC122 UC149 VR103 M25CD CBiio r JU24 A123 A7A1 a t o r ...

Page 629: ... 0 2 C 2 C 2 0 2 C 1 C 1 C 1 C 1 C 2 C 2 D 2 C 3 C 3 C 3 C 3 D 3 D 3 D 1 D 1 D 1 C 1 C 1 COMP 07 0101 0102 0103 Q104 Q105 Q108 0110 R44 R47 filOl R102 R103 H1Q4 R105 R10B R107 fllOB R109 RUO R i l l R112 R113 R i l d R115 R11B R117 RUB R122 R123 H124 R125 R126 R131 R132 R133 X Y D 1 C 3 C 2 B 2 C 1 C 2 C 3 D 3 C 1 D 2 D 2 C 3 C 3 C 3 C 2 C 2 C 3 C 3 C 2 C 2 C 2 C 3 C 3 C 3 C 3 C 3 C 2 C 1 D 3 0 3 ...

Page 630: ...trace inductors Logic Levels TTL at Jl pins 8 10 select the oscillator shown in table SAMR A 0 0 i l SAHfl B 0 1 0 i SAWB OSCILLATOR B32 5 742 5 787 5 NO OUTPUT 4 All circuit boards are manufactured using a hot air leveled process These boards require extra care when replacing components Refer to General Service Information paragraph 9 3 A7A1 0101 102 103 104 105 108 110 TOP VIEW 4 E KB y3io 5V 2 ...

Page 631: ...HANGES 427A to 2512A On the schematic C147 CMS C149 In 742 5 MHz SAWR OSCILLATOR 787 5 MHz OSCILLATOR AND 832 5 MHz OSCILLATOR place an asterisk next to C149 C148 and Cl 47 indicating factory selected components SS26 8L 104 1 ...

Page 632: ...5V FL4 SAWR B FL5 Fl R101 5110 5VCF1 U6 rz i t J i BIN 7 SEG T2 i V20 1 2 CT 0 L G21 a 20 2 l b 20 21 c 20 21 d 20 2 l e 20 21 f 20 21 B 20 21 X C107 JO 01 15V F2 J FI47 3 3k 12 11 Ji NC NC JJ_ 15 J4 12 J i J4_ NC NC 11 POWER SUPPLY AND GROUND 25 GJ POWER SUPPLY AND QND s 15V F1 15V F2 15V IF3 15V F4 15VIF5 15V F6 5V F1 L SERIAL PREFIX S 7A ...

Page 633: ...3k JJB IS _U JA 19 11 01 15V IFS _3_ 14 12 10 742 5 MHz SAWR OSCILLATOR R126 422 VR103 S 2V R125 1470 7 8 7 5 M SAWR OSCILLA H132 9 0 9 C 1 2 6 lOp C122 47p C149 X 5 6p Y3 W3 W7 INDTE a W B NOTE 2 CR110 C121 47p 25 GD ...

Page 634: ... W6 NOTE g V C121 47p 787 5 MHz SAWR OSCILLATOR R134 90 9 Yl W2 Wll NOTE 2 15V Fi B102 10k CR101 W10 NOTE 2 CR102 R103 5 H 0 C105 47p 832 5 MHz SAWR OSCILLATOR Rl 16 422 VR1C2 5 2V 47p R133 90 9 C117 lOp C113J C147 3 3p ...

Page 635: ...FI6 SL 05T ...

Page 636: ...1 Q AND LiFIERS L i l i lOOn 15V F6 B131 200 UHF gj OUTPUT w LEVEL ADJ M3V F5 15V F4 CH A143 422 C140 ipoop j B141 SAHfl OSCILLATON W25 OUTPUT Kilz Q B 35 fc ATTENTION Static Sensitive Devices SS26 Figure 8L 105 ...

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