Agilent Technologies 33120A Service Manual Download Page 104

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Service

This chapter discusses the procedures involved for returning a failed
function generator to Agilent for service or repair. Subjects covered
include the following:

Operating Checklist . . . . . . . . . . . . . . . . . . . 103

Types of Service Available . . . . . . . . . . . . . . . 104

Repackaging for Shipment . . . . . . . . . . . . . . . 105

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 105

Electrostatic Discharge (ESD) Precautions . . . . . . 106

Surface Mount Repair . . . . . . . . . . . . . . . . . . 106

To Replace the Power-Line Fuse . . . . . . . . . . . . 107

To Replace the Output Protection Fuse (F801) . . . . 107

Troubleshooting Hints . . . . . . . . . . . . . . . . . 108

Self-Test Procedures . . . . . . . . . . . . . . . . . . 110

102

Summary of Contents for 33120A

Page 1: ...al set Edition 6 March 2002 Copyright Agilent Technologies Inc 1994 2002 For Safety information Warranties and Regulatory information see the last page in this manual Agilent 33120A 15 MHz Function Arbitrary Waveform Generator Cover Page for Web Version ONLY Service Guide ...

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Page 3: ...vacuum fluorescent display Instrument state storage Portable ruggedized case with non skid feet Flexible system features Four downloadable 16 000 point arbitrary waveform memories GPIB IEEE 488 interface and RS 232 interface are standard SCPI Standard Commands for Programmable Instruments compatibility Agilent IntuiLink Arb Waveform Generation Software for Microsoft Windows Warning The procedures ...

Page 4: ...ce 1 Function Modulation keys 2 Menu operation keys 3 Waveform modify keys 4 Single Internal Trigger key Burst and Sweep only 5 Recall Store instrument state key 6 Enter Number key 7 Shift Local key 8 Enter Number units keys 2 ...

Page 5: ... Enter for those operations that do not require units to be specified AM Level Offset Duty and Store Recall State You can enter numbers from the front panel using one of three methods Use the arrow keys to edit individual digits Use the Enter Number mode to enter a number with the appropriate units Use the knob and the arrow keys to modify the displayed number 3 ...

Page 6: ... 3 LINE EDIT Õ 4 POINT EDIT Õ 5 INVERT Õ 6 SAVE AS Õ7 DELETE The commands enclosed in square brackets are hidden until you make a selection from the NEW ARB command to initiate a new edit session D SYStem MENU 1 OUT TERM Õ 2 POWER ON Õ 3 ERROR Õ 4 TEST Õ 5 COMMA Õ 6 REVISION E Input Output MENU 1 HPIB ADDR Õ 2 INTERFACE Õ 3 BAUD RATE Õ 4 PARITY Õ 5 LANGUAGE F CALibration MENU 1 SECURED or 1 UNSECU...

Page 7: ...SK Burst FSK frequency shift keying modulation is enabled Burst modulation is enabled Sweep mode is enabled Hardware or remote interface command errors are detected The waveform is being output with an offset voltage Shift key has been pressed Press Shift again to turn off Enter Number mode is enabled Press Shift Cancel to disable Arbitrary waveform function is enabled Sine waveform function is en...

Page 8: ...ernal Trigger FSK Burst modulation input terminal 6 GPIB IEEE 488 interface connector 7 RS 232 interface connector Use the front panel Input Output Menu to Select the GPIB or RS 232 interface see chapter 4 in User s Guide Set the GPIB bus address see chapter 4 in User s Guide Set the RS 232 baud rate and parity see chapter 4 in User s Guide 6 ...

Page 9: ...n the function generator Service Chapter 6 provides guidelines for returning your function generator to Agilent for servicing or for servicing it yourself Replaceable Parts Chapter 7 contains a detailed parts lists of the function generator Schematics Chapter 8 contains the function generator s block diagram schematics disassembly drawings and component locator drawings For information on using th...

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Page 11: ...n Front panel menu reference 37 A front panel menu tutorial 39 To select the output termination 44 To output a modulated waveform 45 To unsecure the function generator for calibration 47 Chapter 4 Calibration Procedures Agilent Calibration Services 51 Calibration Interval 51 Time Required for Calibration 51 Automating Calibration Procedures 52 Recommended Test Equipment 52 Test Considerations 53 P...

Page 12: ...mplitude Adjustment 50W 73 DC Output Adjustment 76 Duty Cycle Adjustment 77 AC Amplitude Flatness Adjustment 77 Output Amplifier Adjustment Optional 80 Error Messages 81 Chapter 5 Theory of Operation Block Diagram Overview 85 Output Attenuator 86 Output Amplifier 87 AM Modulation 89 Pre attenuator 90 Square Wave and Sync 90 Filters 92 Waveform DAC Amplitude Leveling Waveform RAM 93 Direct Digital ...

Page 13: ...le Parts Replaceable Parts 113 Chapter 8 Schematics 33120A Block Diagram 129 Mechanical Disassembly 130 Floating Logic Schematic 131 Digital Waveform Data Synthesis 132 System DAC Schematic 133 Waveform DAC Schematic 134 Filters Schematic 135 Sync Square Wave and Attenuator Schematic 136 Output Amplifier Schematic 137 Output Attenuator Schematic 138 Earth Reference Logic Schematic 139 Power Suppli...

Page 14: ...Contents 12 ...

Page 15: ...1 Specifications 1 ...

Page 16: ... 65 dBc 65 dBc 6 dB octave 55 dBc in a 30 kHz band SIGNAL CHARACTERISTICS Squarewave Rise Fall Time Overshoot Asymmetry Duty Cycle Triangle Ramp Arb Rise Fall Time Linearity Settling Time Jitter 20 ns 4 1 5 ns 20 to 80 to 5 MHz 40 to 60 to 15 MHz 40 ns typical 0 1 of peak output 250 ns to 0 5 of final value 25 ns OUTPUT CHARACTERISTICS 1 Amplitude into 50W 2 Accuracy at 1 kHz Flatness 100 kHz 100 ...

Page 17: ... 30 ms 10 ms 100 ms 350 ms FREQUENCY SWEEP Type Direction Start F Stop F Time Source Linear or Logarithmic Up or Down 10 mHz to 15 MHz 1 ms to 500 sec 0 1 Single External or Internal REAR PANEL INPUTS External AM Modulation External Trigger FSK Burst Gate 1 Latency Jitter 5 Vpk 100 Modulation 5 kW Input Resistance TTL low true 1 3 ms 25 ns Arb Download Times over GPIB Arb Length Binary ASCII Integ...

Page 18: ...ble Stored States Arbitrary waveforms stored separately 254 4 mm x 103 6 mm x 374 mm 212 6 mm x 88 5 mm x 348 3 mm 4 kg 8 8 lbs Safety Designed to EMC Vibration and Shock Acoustic Noise Warm Up Time Warranty Remote Interface Programming Language Accessories Included EN61010 CSA1010 UL 1244 EN61326 1 1997 1A 1998 MIL T 28800E Type III Class 5 data on file 30 dBa 1 hour 3 years standard IEEE 488 and...

Page 19: ...PRODUCT DIMENSIONS TOP All dimensions are shown in millimeters 1 Chapter 1 Specifications Agilent 33120A Function Generator 17 ...

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Page 21: ...2 Quick Start 2 ...

Page 22: ...e Shift annunciator will turn on Then press the key that has the desired label above it For example to select the AM amplitude modulation function press Shift AM the shifted version of the key If you accidentally press Shift just press it again to turn off the Shift annunciator Most keys also have a number printed in green next to the key To enable the number mode press Enter Number the Num annunc...

Page 23: ...power on self test The GPIB bus address is displayed Notice that the function generator powers up in the sine wave function at 1 kHz with an amplitude of 100 mV peak to peak into a 50W termination To review the power on display with all annunciators turned on hold down Shift as you turn on the function generator 3 Perform a complete self test The complete self test performs a more extensive series...

Page 24: ...he function generator into is energized 2 Verify the power line voltage setting The line voltage is set to the proper value for your country when the function generator is shipped from the factory Change the voltage setting if it is not correct The settings are 100 120 220 or 240 Vac for 230 Vac operation use the 220 Vac setting See the next page if you need to change the line voltage setting 3 Ve...

Page 25: ...r panel 2 Remove the line voltage selector from the assembly 3 Rotate the line voltage selector until the correct voltage appears in the window 4 Replace the fuse holder assembly in the rear panel Fuse 500 mAT for all line voltages Part Number 2110 0458 100 120 220 230 or 240 Vac 2 Chapter 2 Quick Start If the function generator does not turn on 23 ...

Page 26: ...handle To adjust the position grasp the handle by the sides and pull outward Then rotate the handle to the desired position Bench top viewing positions Carrying position Chapter 2 Quick Start To adjust the carrying handle 24 ...

Page 27: ...r 2 Enter the magnitude of the desired frequency 1 1 2 Notice that the Num annunciator turns on and ENTER NUM flashes on the display indicating that the number mode is enabled 1 2 To cancel the number mode press Shift Cancel MHz m Vpp 3 Set the units to the desired value The units are selected using the arrow keys on the right side of the front panel As soon as you select the units the function ge...

Page 28: ...ter the magnitude of the desired amplitude 1 5 0 Notice that the Num annunciator turns on and ENTER NUM flashes on the display indicating that the number mode is enabled 50 To cancel the number mode press Shift Cancel Shift 3 Set the units to the desired value kHz m Vrms The units are selected using the arrow keys on the right side of the front panel As soon as you select the units the function ge...

Page 29: ...ciator turns on and ENTER NUM flashes on the display indicating that the number mode is enabled Notice that toggles the displayed value between and 1 5 To cancel the number mode press Shift Cancel Shift 3 Set the units to the desired value kHz m Vrms At this point the function generator outputs the waveform with the displayed offset Notice that the Offset annunciator turns on indicating that the w...

Page 30: ...Shift Duty 2 Enable the duty cycle modify mode The displayed duty cycle is either the power on value or the previous value selected 50 DUTY This message appears on the display for approximately 10 seconds Repeat this step as needed Enter Number 3 Enter the desired duty cycle 1 4 5 Notice that the Num annunciator turns on and ENTER NUM flashes on the display indicating that the number mode is enabl...

Page 31: ... names The first choice on this level is SINC SINC This message appears on the display for approximately 10 seconds Repeat this step as needed 2 Move across to the EXP_RISE choice 1 EXP_RISE Enter 3 Select and output the displayed arbitrary waveform Notice that the Arb annunciator turns on indicating that the output is an arbitrary waveform The waveform is output using the present settings for fre...

Page 32: ...Enter Number 2 Enter the magnitude of the desired voltage 1 1 5 5 Notice that the Num annunciator turns on and ENTER NUM flashes on the display indicating that the number mode is enabled 155 To cancel the number mode press Shift Cancel Shift 3 Set the units to the desired value kHz m Vrms At this point the function generator outputs the displayed dc voltage Notice that the Offset annunciator turns...

Page 33: ...mbered 1 2 and 3 are available to store instrument configurations The instrument configuration is stored in non volatile memory and is remembered when power has been off STORE 1 This message appears on the display for approximately 10 seconds Repeat this step as needed 3 Store the instrument state in memory location 2 1 Use the up and down arrow keys to select the memory location STORE 2 To cancel...

Page 34: ...10 seconds Repeat this step as needed Enter 6 Restore the instrument state The function generator should now be configured in the same state as when you stored the setup on the previous page When power is turned off the function generator automatically stores its state in memory location 0 You can recall the power down state but you cannot store the state to location 0 from the front panel Use the...

Page 35: ... System II instrument of the same size can be rack mounted beside the 33120A Function Generator Remove the carrying handle and the front and rear rubber bumpers before rack mounting the function generator To remove the handle rotate it to the vertical position and pull the ends outward Front Rear bottom view To remove the rubber bumper stretch a corner and then slide it off 2 Chapter 2 Quick Start...

Page 36: ...side by side order lock link kit 5061 9694 and flange kit 5063 9212 To install one or two instruments in a sliding support shelf order shelf 5063 9255 and slide kit 1494 0015 for a single instrument also order filler panel 5002 3999 Chapter 2 Quick Start To rack mount the function generator 34 ...

Page 37: ...3 Front Panel Menu Operation 3 ...

Page 38: ...anel menu This chapter does not give a detailed description of every front panel key or menu operation It does however give you an overview of front panel menu operations related to verification adjustment and service See chapter 3 Features and Functions in the User s Guide for a complete discussion of the function generator s capabilities and operation If you purchased the Phase Lock Option for t...

Page 39: ... 2 STOP F Õ 3 SWP TIME Õ 4 SWP MODE 1 START F Sets the start frequency in Hz for sweeping 2 STOP F Sets the stop frequency in Hz for sweeping 3 SWP TIME Sets the repetition rate in seconds for sweeping 4 SWP MODE Selects linear or logarithmic sweeping C EDIT MENU 1 NEW ARB Õ 2 POINTS Õ 3 LINE EDIT Õ 4 POINT EDIT Õ 5 INVERT Õ 6 SAVE AS Õ 7 DELETE 1 NEW ARB Initiates a new arb waveform or loads the ...

Page 40: ...terface 3 BAUD RATE Selects the baud rate for RS 232 operation 4 PARITY Selects even odd or no parity for RS 232 operation 5 LANGUAGE Verifies the interface language SCPI F CALibration MENU 1 SECURED Õ 1 UNSECURED Õ 2 CALIBRATE Õ 3 CAL COUNT Õ 4 MESSAGE 1 SECURED The function generator is secured against calibration enter code to unsecure 1 UNSECURED The function generator is unsecured for calibra...

Page 41: ...move down or up the menu tree to get from one level to the next Each of the three levels has several horizontal choices which you can view by moving left or right Menus Commands Parameters The menu is organized in a top down tree structure with three levels To turn on the menu press Shift Menu On Off To turn off the menu press Shift Menu On Off To execute a menu command press Enter To recall the l...

Page 42: ...ess ENTERED The change made on the PARAMETER level is saved This is displayed after you press Enter Menu Enter to execute the command MIN VALUE The value you specified on the PARAMETER level is too small for the selected command The minimum value allowed is displayed for you to edit MAX VALUE The value you specified on the PARAMETER level is too large for the selected command The maximum value all...

Page 43: ...ove across to the SYS MENU choice on this level 1 There are six menu group choices available on the MENUS level Each choice has a letter prefix for easy identification A B etc D SYS MENU 3 Move down to the COMMANDS level within the SYS MENU The OUT TERM command is your first choice on this level 1 OUT TERM 4 Move across to the POWER ON command on this level 1 There are six command choices availabl...

Page 44: ... turn off the menu The function generator beeps and displays a message to show that the change is now in effect You are then exited from the menu ENTERED 8 Cycle the power to restore the default values Turn the function generator OFF and then ON The default output state will now be in effect 1 kHz sine wave 100 mV peak to peak 50W termination 1 You can also use the knob to scroll left or right thr...

Page 45: ...function generator displays the current output amplitude 100 0 mVPP 2 Move the flashing cursor over to edit the first digit The cursor movement wraps around 100 0 mVPP 3 Increment the first digit until 300 0 mVPP is displayed 1 The output amplitude of the function changes as you adjust the displayed value 300 0 mVPP 1 You can also use the knob and arrow keys to enter a number 3 Chapter 3 Front Pan...

Page 46: ... MENU choice on this level 1 D SYS MENU 3 Move down a level to the OUT TERM command 1 OUT TERM 4 Move down a level and then across to the HIGH Z choice 1 With the output termination set to HIGH Z the function generator allows you to set the unloaded open circuit output voltage HIGH Z Enter 5 Save the change and turn off the menu The function generator beeps and displays a message to show that the ...

Page 47: ... wave 1 Select the function frequency and amplitude of the carrier For the carrier waveform you can select a sine square triangle ramp or arbitrary waveform For this example select a 5 kHz sine wave with an amplitude of 5 Vpp Shift AM 2 Select AM Notice that the AM annunciator turns on Shift 3 Use the menu to select the shape of the modulating waveform Recall Menu After you enable the AM function ...

Page 48: ...ing that the displayed frequency is the modulating frequency Also notice that the modulating frequency is displayed with fewer digits than the carrier frequency MOD 200 0 Hz This message appears on the display for approximately 10 seconds Repeat this step as needed Shift Level 7 Set the modulation depth to 80 Notice that the AM annunciator flashes indicating that the displayed percentage is the AM...

Page 49: ...cure the function generator for calibration Shift 1 Turn on the menu Menu On Off A MOD MENU 2 Move across to the CAL MENU choice on this level F CAL MENU 3 Move down a level to the SECURED command 1 SECURED If the display shows UNSECURED you do not need to perform this procedure to execute a calibration 3 Chapter 3 Front Panel Menu Operation To unsecure the function generator for calibration 47 ...

Page 50: ...interface reset To enter the security code from the front panel enter only the six digits To enter the security code from the remote interface you may enter up to 12 characters Use the knob or arrow keys to move left or right between digits Use the up or down arrow keys to change the digits To re secure the function generator following a calibration perform this procedure again Additional informat...

Page 51: ...4 Calibration Procedures 4 ...

Page 52: ...ification 56 DC Function Offset Verification 57 AC Amplitude Verification 57 Amplitude Flatness Verification 60 AM Modulation Depth Verification 61 Optional Performance Verification Tests 62 Calibration Security Code 64 Calibration Count 66 Calibration Message 66 General Calibration Adjustment Procedure 67 Aborting a Calibration in Progress 69 Frequency and Burst Rate Adjustment 69 Function Gain a...

Page 53: ...erator should be calibrated on a regular interval determined by the measurement accuracy requirements of your application A 1 or 2 year interval is adequate for most applications Agilent does not recommend extending calibration intervals beyond two years for any application Whatever calibration interval you select Agilent recommends that complete re adjustment should always be performed at the cal...

Page 54: ...amming the function generator see chapters 3 and 4 in the Agilent 33120A User s Guide Recommended Test Equipment The test equipment recommended for the performance verification and adjustment procedures is listed below If the exact instrument is not available use the accuracy requirements shown to select substitute calibration standards Instrument Requirements Recommended Model Use 50 W feedthroug...

Page 55: ...mmendations Verify the function generator is set to the default power on state power on default A procedure is given on page 41 Make sure that the calibration ambient temperature is stable and between 18 C and 28 C Make sure ambient relative humidity is less than 80 Allow a 1 hour warm up period before verification or adjustment Use only RG 58 or equivalent 50W cable Keep cables as short as possib...

Page 56: ...you turn on the function generator This limited test assures that the function generator is capable of operation To perform a complete self test hold down the Shift key as you press the Power switch to turn on the function generator hold down the key for more than 5 seconds a complete description of these tests can be found in chapter 6 The function generator will automatically perform the complet...

Page 57: ... the quick performance check do the following Set the function generator to the default power on state power on default A procedure is given on page 41 Perform a complete self test A procedure is given on page 21 Perform only the performance verification tests indicated with the letter Q If the function generator fails the quick performance check adjustment or repair is required Performance Verifi...

Page 58: ...This test verifies the output amplitude accuracy specification for sine wave triangle wave ramp and square wave outputs Set the function generator for each output indicated in the table below Use a DMM to measure the function generator ACrms output voltage Compare the measured results to the test limits shown in the table This is a HIGH Z output termination test Agilent 33120A Measurement Function...

Page 59: ...ation This procedure is used to check the output amplitude calibration of the function generator Verification checks are performed to check the accuracy of the pre attenuator and post attenuator Make sure you have read Test Considerations on page 53 Set the function generator for each output indicated in the table on the next page Use a DMM to measure the ACrms output voltage of the function gener...

Page 60: ...ve HIGH Z 0 55 Vrms 1 00 kHz 0 55 Vrms 0 0055 Vrms Sine wave HIGH Z 0 44 Vrms 1 00 kHz 0 44 Vrms 0 0044 Vrms Sine wave HIGH Z 0 35 Vrms 1 00 kHz 0 35 Vrms 0 0035 Vrms Sine wave HIGH Z 0 28 Vrms 1 00 kHz 0 28 Vrms 0 0028 Vrms Sine wave HIGH Z 0 22 Vrms 1 00 kHz 0 22 Vrms 0 0022 Vrms Sine wave HIGH Z 0 17 Vrms 1 00 kHz 0 17 Vrms 0 0017 Vrms Sine wave HIGH Z 0 14 Vrms 1 00 kHz 0 14 Vrms 0 0014 Vrms S...

Page 61: ... 55 Vrms 0 0055 Vrms Sine wave 50 W 0 44 Vrms 1 0000 kHz 0 44 Vrms 0 0044 Vrms Sine wave 50 W 0 35 Vrms 1 0000 kHz 0 35 Vrms 0 0035 Vrms Sine wave 50 W 0 28 Vrms 1 0000 kHz 0 28 Vrms 0 0028 Vrms Sine wave 50 W 0 22 Vrms 1 0000 kHz 0 22 Vrms 0 0022 Vrms Sine wave 50 W 0 17 Vrms 1 0000 kHz 0 17 Vrms 0 0017 Vrms Sine wave 50 W 0 14 Vrms 1 0000 kHz 0 14 Vrms 0 0014 Vrms Sine wave 50 W 0 11 Vrms 1 0000...

Page 62: ...to the test limits shown in the table This test is a 50W output termination test Agilent 33120A Measurement Function OUT 1 TERM Ampl Freq Nominal Error Q Sine wave 50 W 3 0 Vrms 1 00 kHz reference Sine wave 50 W 3 0 Vrms 100 00 kHz reference 0 03 Vrms Sine wave 50 W 3 0 Vrms 500 00 kHz reference 0 045 Vrms Q Sine wave 50 W 3 0 Vrms 1 00 MHz reference 0 045 Vrms Sine wave 50 W 3 0 Vrms 3 00 MHz ref...

Page 63: ...s a HIGH Z output termination test Agilent 33120A Measurement AM Modulation Function OUT 1 TERM Ampl Freq Shape Freq Depth Nominal Error Q Sine wave HIGH Z 1 0 Vrms 1 00 kHz Sinewave 100 Hz 0 0 50 Vrms 0 005 Vrms Sine wave HIGH Z 1 0 Vrms 1 00 kHz Sinewave 100 Hz 100 0 61 Vrms 0 0061 Vrms 1 Output termination set using front panel controls HIGH Z assumes no load on output 50W assumes a 50W 0 1W lo...

Page 64: ...ut termination test Agilent 33120A Measurement Function OUT 1 TERM Ampl Freq Duty Cycle Nominal Error Square wave HIGH Z 1 0 Vrms 300 00 Hz 50 0 00 Vdc 0 020 Vdc Square wave HIGH Z 1 0 Vrms 300 00 Hz 25 0 50 Vdc 0 020 Vdc Square wave HIGH Z 1 0 Vrms 300 00 Hz 75 0 50 Vdc 0 020 Vdc The DMM used for this test must be an integrating multimeter If the first step does not measure 0 Vdc use an oscillosc...

Page 65: ...s reference This test is a 50W output termination test Agilent 33120A Measurement harmonic Function OUT 1 TERM Ampl Freq Fundamental 2nd 3rd 4th 5th Value below reference Sine wave 50 W 1 1 Vrms 20 00 kHz reference 40 kHz 60 kHz 80 kHz 100 kHz 70 dB Sine wave 50 W 1 1 Vrms 100 00 kHz reference 200 kHz 300 kHz 400 kHz 500 kHz 60 dB Sine wave 50 W 1 1 Vrms 1 00 MHz reference 2 MHz 3 MHz 4 MHz 5 MHz ...

Page 66: ...racters as shown below The first character must be a letter but the remaining characters can be letters or numbers You do not have to use all 12 characters but the first character must always be a letter A _ _ _ _ _ _ _ _ _ _ _ 12 characters To secure the function generator from the remote interface but allow it to be unsecured from the front panel use the eight character format shown below The fi...

Page 67: ...al shock and personal injury be careful not to touch the power line connections 1 Disconnect the power cord and all input connections front and rear terminals 2 Remove the instrument cover Refer to the disassembly drawing on page 130 3 Connect the power cord and turn on the function generator 4 Apply a short between the two exposed metal pads on JM101 located near U106 and U205 as shown in the fig...

Page 68: ... is no way provided to program or reset the calibration count It is an independent electronic calibration serialization value Calibration Message You can use the calibration message feature to record calibration information about your function generator For example you can store such information as the last calibration date the next calibration due date the function generator s serial number or ev...

Page 69: ...oice on this level 1 F CAL MENU 3 Move down a level to the UNSECURED command 1 UNSECURED If the display shows SECURED you will have to unsecure the function generator to perform the calibration procedures A procedure is given on page 47 4 Move across to the CALIBRATE choice 1 2 CALIBRATE 5 Move down one level The display indicates the calibration setup number You can change this number to perform ...

Page 70: ...setup number and function generator output is automatically set for the next adjustment procedure SETUP 01 You will press ENTER twice for each calibration step once to select the setup as described in step 6 and once to enter the adjustment as described in step 9 1 You can also use the knob to scroll left or right through the choices on each level of the menu Chapter 4 Calibration Procedures Gener...

Page 71: ... following table These adjustments use a 50W output termination Nominal Output SETUP FREQUENCY AMPLITUDE 00 1 00 kHz 10 Vpp Adjustment for main frequency generator sine wave output 01 500 Hz 10 Vpp Adjustment for burst rate timing pulse output 2 Use the CALIBRATE menu to adjust the displayed frequency at each setup to match the measured frequency and enter the value 3 Perform the Frequency Verific...

Page 72: ... gain 07 100 Hz 1 1 Vrms Adjustment for square wave linearity 2 Use the CALIBRATE menu to adjust the displayed amplitude at each setup to match the measured amplitude and enter the value 3 Perform the Function Gain and Linearity Verification procedures on page 56 AC Amplitude Adjustment High Z The function generator stores twenty two calibration constants related to HIGH Z output and sixteen calib...

Page 73: ...Attenuator 19 1 kHz 0 44 V rms 24 dB Output Attenuator 20 1 kHz 0 35 V rms 26 dB Output Attenuator 21 1 kHz 0 28 V rms 28 dB Output Attenuator 22 1 kHz 0 22 V rms 30 dB Output Attenuator 23 1 kHz 5 5 V rms 2 dB Pre attenuator 24 1 kHz 4 4 V rms 4 dB Pre attenuator 25 1 kHz 3 5 V rms 6 dB Pre attenuator 26 1 kHz 2 8 V rms 8 dB Pre attenuator 27 1 kHz 2 2V rms 10 dB Pre attenuator 28 1 kHz 1 7 V rms...

Page 74: ...o match the measured amplitude and enter the value 3 3 Perform the AM Modulation Depth Verification procedures on page 61 NEW CALIBRATION A new calibration SETUP 85 Rev 4 0 has been added to eliminate a small residual error in the AM amplitude system which could potentially cause a failure of the AM amplitude verification The new calibration operates just like the other AM calibrations SETUP 30 31...

Page 75: ...e the resistance of a 50W feedthrough load Record the measurement for step 3 You can measure the load and cable resistance recommended procedure or just the load as shown below 3 Enter the following setup and use the calibrate menu to enter the measured value of the 50W feedthrough load and cable This number will be used to calculate the 50W output amplitude calibration constants Nominal Input SET...

Page 76: ...ion generator ACrms output voltage for each setup in the table on the next page These adjustments use the 50W load and cable measured in step 2 and connected as shown below Chapter 4 Calibration Procedures AC Amplitude Adjustment 50W 74 ...

Page 77: ...1 kHz 559 Vrms 16 dB Output Attenuator 43 1 kHz 442 Vrms 18 dB Output Attenuator 44 1 kHz 350 Vrms 20 dB Output Attenuator 44 1 kHz 281 Vrms 22 dB Output Attenuator 46 1 kHz 223 Vrms 24 dB Output Attenuator 47 1 kHz 177 Vrms 26 dB Output Attenuator 48 1 kHz 141 Vrms 28 dB Output Attenuator 49 1 kHz 112 Vrms 30 dB Output Attenuator 5 Use the CALIBRATE menu to adjust the displayed amplitude at each ...

Page 78: ... termination Nominal Output SETUP DC Volts Adjustment for 50 8 0 Vdc Negative offset gain 51 8 0 Vdc Positive offset gain 52 0 0 Vdc AM offset 53 0 0 Vdc 2 dB Pre attenuator offset 54 0 0 Vdc 4 dB Pre attenuator offset 55 0 0 Vdc 6 dB Pre attenuator offset 56 0 0 Vdc 8 dB Pre attenuator offset 57 0 0 Vdc 10 dB Pre attenuator offset 58 0 0 Vdc 12 dB Pre attenuator offset 59 0 0 Vdc 14 dB Pre attenu...

Page 79: ...P FREQUENCY AMPLITUDE 60 10 0 Vdc Positive squarewave offset 61 10 0 Vdc Negative squarewave offset 62 300 Hz 0 0 Vdc 50 duty cycle squarewave 63 300 Hz 5 0 Vdc 75 duty cycle squarewave 2 Use the CALIBRATE menu to adjust the displayed output voltage at each setup to match the measured voltage and enter the value 3 Perform the Squarewave Duty Cycle Verification procedures on page 62 AC Amplitude Fl...

Page 80: ...Y AMPLITUDE Reference for 83 1 kHz 3 0 V rms V rms dBm Transfer Measurement Procedure If you are using a power meter not capable of measurement to 1 kHz you can perform the transfer measurement at a different frequency For example the Agilent E4418A Power Meter with the Agilent 8482A probe and 20 dB attenuator are specified to a low frequency of 100 kHz To use this measurement device perform step ...

Page 81: ...ess 73 10 5 MHz 3 0 V rms 10 5 MHz amplitude flatness 74 11 MHz 3 0 V rms 11 MHz amplitude flatness 75 11 5 MHz 3 0 V rms 11 5 MHz amplitude flatness 76 12 MHz 3 0 V rms 12 MHz amplitude flatness 77 12 5 MHz 3 0 V rms 12 5 MHz amplitude flatness 78 13 MHz 3 0 V rms 13 MHz amplitude flatness 79 13 5 MHz 3 0 V rms 13 5 MHz amplitude flatness 80 14 MHz 3 0 V rms 14 MHz amplitude flatness 81 14 5 MHz ...

Page 82: ... power and cover as described on page 130 2 Use a DMM to measure the ACrms voltage across J701 as shown below 3 Turn on the function generator 4 Set the function generator for a 1 kHz 1V rms sine wave output 5 Adjust R710 for a minimum reading on the voltmeter Typical readings are less than 0 005 Vrms 6 Replace the covers as described on page 130 Cable Shield is Circuit Ground Chapter 4 Calibratio...

Page 83: ...1 RS 232 framing error 512 RS 232 overrun error 513 RS 232 parity error 514 Command allowed only with RS 232 521 Input buffer overflow 522 Output buffer overflow 550 Command not allowed in Local Self Test Error Messages Error Error Message 601 Front panel does not respond 602 RAM read write fail 603 Waveform RAM readback failed 604 Modulation RAM readback failed 605 Serial configuration readback f...

Page 84: ...xternally locked Option 001 760 RAM checksum failure 850 Cal setup invalid 851 Negative offset gain cal required CAL SETup 50 852 Flatness DAC gain cal required CAL SETup 64 853 AM cal 1 required CAL SETup 30 854 AM cal 2 required CAL SETup 31 855 Cal load resistance not specified CAL SETup 33 856 Square wave positive offset cal required CAL SETup 60 857 Square wave 50 duty cycle cal required CAL ...

Page 85: ...5 Theory of Operation 5 ...

Page 86: ...cuitry contained in the schematics chapter Block Diagram Overview 85 Output Attenuator 86 Output Amplifier 87 AM Modulation 89 Pre attenuator 90 Square Wave and Sync 90 Filters 92 Waveform DAC Amplitude Leveling Waveform RAM 93 Direct Digital Synthesis DDS ASIC 95 System DACs 96 Floating Logic 97 Earth Referenced Logic 98 Power Supplies 98 Display and Keyboard 100 The self test procedures are desc...

Page 87: ...0 mVp p and 1 Vp p The DAC outputs are routed through anti alias low pass filters to eliminate higher frequency sampling products The nominal x10 gain of the output amplifier combined with preattenuator and output attenuator settings are chosen such that the desired output amplitude is produced The ground reference section uses a processor configured as a slave to the main CPU This processor estab...

Page 88: ...aveform DAC itself The AMP_CTL signal provides smoothly varying control of the Waveform DAC output level over a 0 dB to 2 dB range This operation is described further in the Waveform DAC and System DAC discussions Output Attenuation K801 K802 K803 K804 0 dB set set set set 6 dB reset reset set set 12 dB set reset reset set 18 dB reset set set reset 24 dB set set reset reset 30 dB reset reset reset...

Page 89: ...als originating from the DAC and DAC signal paths are combined at the input of the amplifier The output amplifier exhibits a nominal x 10 voltage gain from its AMP_IN input and a nominal x12 voltage gain from its AMP_IN input A dc offset signal related to the front panel output offset value is also summed with the ac signal at the input of the amplifier A simplified block diagram of the output amp...

Page 90: ...ching between Q713 Q714 and their equivalents in the other half of the stage R734 R727 and Q718 Q716 Transistors Q712 and Q717 are current sources which provide bias to emitter followers Q714 and Q716 respectively The low frequency and dc performance of the amplifier is controlled by U702 This amplifier is used to sense the dc offset present at the AMP_IN and AMP_IN inputs and servo the output amp...

Page 91: ...bit modulation wave shape through DAC U313 Data from any standard or arbitrary wave shape can be used as the modulating wave shape Modulating wave shapes are automatically expanded or compressed in length as required to meet the specified modulating frequency setting Changes in the function generator output will lag changes in the modulating frequency because new modulation data must be computed a...

Page 92: ...m DAC output level are combined to produce each amplitude setting In the preattenuator U601 and U602 are operated as 8 to 1 multiplexers each providing selectable 2 dB attenuation steps Because of the gain imbalance of the output amplifier x 12 on AMP_IN and x 10 on AMP_IN the signal path U601 has an additional 2 dB attenuation always present R601 and R602 to equalize the nominal gains in both the...

Page 93: ...t or reset state is selected by momentarily pulsing the appropriate coil Relay coils are pulsed with 5 volts for 15 ms through relay driver U301 The main controller U102 writes data bytes to ASIC U103 which transmits this data to the relay drivers via the internal 3 wire serial data bus SERCLK SERDAT and SERSTB to accomplish relay state changes Multiplexer U604 selects one of five sources for the ...

Page 94: ...response of these filters The filters are switched in or out of the signal path by latching relays K501 and K502 Their set or reset state is selected by momentarily pulsing the appropriate coil of the relay Relay coils are pulsed with 5 volts for 15 ms through relay drivers U301 and U302 The main controller U102 writes data bytes to ASIC U103 which transmits this data to the relay drivers via the ...

Page 95: ... output current yielding differential 1 Vac output signals Wave shape amplitude data is loaded into the waveform RAM by the main controller CPU U102 Once loaded these data are addressed by the DDS ASIC The rate at which addresses are incremented determines the output waveform frequency Waveform RAM output data is latched and shifted to ECL levels by U402 and U403 for input to the waveform digital ...

Page 96: ...orrection data values which are gated to latch U412 during operation These data provide real time correction of the output amplitude level as frequency changes are made Amplifier U408 and Q401 use the waveform DAC reference voltage to center the waveform DAC output signal near 0 volts U404 and U405 are the high speed waveform RAM Together U404 and U405 form a 16383 x 12 bit RAM Each RAM stores and...

Page 97: ... The state of the HOST_RQ line controls whether the main CPU or the modulation RAM U205 is sourcing instructions to the DDS ASIC internal state machines The Modulation RAM is loaded with frequency values and amplitude flatness correction values or AM modulation data for latch U309 and AM dac U313 Data multiplexer U217 and flip flop U215 are used to preselect and synchronize the modulation sync sou...

Page 98: ...litude square wave duty cycle output dc offset and output amplitude level The System DAC is programmed and responds to the main controller via the internal 3 wire serial data bus SERCLK SERRBK and SERSTB The System DAC is multiplexed to 7 track hold amplifiers through U304 Each track hold amplifier is refreshed approximately every 3 ms to maintain its output setting Changes to track hold amplifier...

Page 99: ...ter an 8 bit counter register a serial transmit receive register and an internal status register RAM chip select signal RAMCE and CPU port bits RAMA13 and RAMA14 are used to access 4 8k byte banks of program data RAM Similarly 4 banks of 56k non volatile EEPROM and 2 banks of 56k non volatile RAM are gated from CPU port bits PRG16 PRG17 and WAVA16 and U103 signal ROMCE Addresses on the CPU address...

Page 100: ...level shifting to approximate 9 volt logic levels through on chip charge pump power supplies using capacitors C904 and C906 Communication between the earth referenced logic interface circuits and the floating logic is accomplished through an optically isolated bi directional serial interface Isolator U101 couples data from U903 to microprocessor U102 Isolator U901 couples data from U102 to micropr...

Page 101: ... for future recall if needed The PONRST signal holds the main CPU and other logic in a reset state until after the 5 Vdc logic power supply is fully operational This signal is generally active only following application of line power to the instrument The floating 18 volt supplies are produced by bridge rectifier CR1001 filter capacitors C1001 and C1003 and regulators U1001 and U1002 These supplie...

Page 102: ...el logic high supply 13 volts is produced from the 18 volt supply by voltage regulator U1102 Display anode and grid voltages are 18 volts for an on segment and 18 volts for an off segment The 12 V cathode bias for the display is provided by the main pc board s filament winding center tap bias circuit CR1010 R1009 and C1011 shown on the power supply schematic see page 140 Keyboard scanning is accom...

Page 103: ...6 Service 6 ...

Page 104: ...cts covered include the following Operating Checklist 103 Types of Service Available 104 Repackaging for Shipment 105 Cleaning 105 Electrostatic Discharge ESD Precautions 106 Surface Mount Repair 106 To Replace the Power Line Fuse 107 To Replace the Output Protection Fuse F801 107 Troubleshooting Hints 108 Self Test Procedures 110 102 ...

Page 105: ...his is the correct fuse for all line voltages Verify the power line voltage setting See To prepare the function generator for use on page 21 Does the function generator fail self test Verify that the correct power line voltage is selected See To prepare the function generator for use on page 21 Is the function generator s output inoperative Turn off the function generator and remove the power cord...

Page 106: ...s 1 Call 1 877 447 7278 and ask for Agilent Express You will be asked for your serial number shipping address and a credit card number to guarantee the return of your failed unit If you do not return your failed unit within 15 business days your credit card will be billed for the cost of a new 33120A 2 Agilent will immediately send a replacement 33120A directly to you The replacement unit will com...

Page 107: ...strong tape or metal bands If the original shipping container is not available place your unit in a container which will ensure at least 4 inches of compressible packaging material around all sides for the instrument Use static free packaging materials to avoid additional damage to your unit Agilent suggests that you always insure shipments Cleaning Clean the outside of the instrument with a soft ...

Page 108: ...ve all plastic styrofoam vinyl paper and other static generating materials from the immediate work area Use only anti static solder suckers WARNING SHOCK HAZARD Only service trained personnel who are aware of the hazards involved should remove the instrument covers To avoid electrical shock and personal injury make sure to disconnect the power cord from the function generator before removing the c...

Page 109: ...tages To Replace the Output Protection Fuse F801 The Output Protection Fuse is located inside the function generator This fuse is a thru hole soldered 500 mA part part number 2110 0716 The fuse is located near the output connector J801 on the main PC board You will need to disassemble the function generator to replace this fuse use a TORX T 15 driver to remove the screws located on the rear panel ...

Page 110: ...e function generator is shipped from the factory with a 500 mAT fuse installed This is the correct fuse for all line voltages Verify the power line voltage setting See To prepare the function generator for use on page 21 Unit Reports Error 760 This error may be produced if you accidentally turn off power the unit during a calibration or while changing a non volatile state of the instrument Recalib...

Page 111: ...failures can cause heavy supply loads which may pull down the regulator output voltage Check the main supply voltages as tabulated below Power Supply Minimum Maximum 5 Ground Ref 4 75V 5 25V 5 Floating 4 75V 5 25V 5 2 Floating 5 46V 4 94V 18 Floating 17 0V 19 1V 18 Floating 19 1V 17 0V 5REF Floating 4 75V 5 25V Some circuits produce their own local power supplies derived from the main supplies Be ...

Page 112: ...ons with the front panel processor U1101 During this test U1101 turns on all display segments Communication must function in both directions for this test to pass If this error is detected during power up self test the function generator will beep twice This error is only readable from the remote interface 602 RAM read write failed This test writes and reads a 55H and AAH checker board pattern to ...

Page 113: ...d counts transitions of the SYNC line The test should provide 8 transitions of the SYNC signal The test also checks the 7th Order Bessel filter path and U620 and U604 An incorrect number of transitions will generate an error This test will fail if a trigger signal is present on the rear panel Ext Trig BNC input 608 SYNC signal detection failure Elliptical filter path This test runs a special wavef...

Page 114: ...112 ...

Page 115: ...7 Replaceable Parts 7 ...

Page 116: ... and manufacturer part number To Order Replaceable Parts You can order replaceable parts from Agilent using the Agilent part number or directly from the manufacturer using the manufacturer s part number Note that not all parts listed in this chapter are available as field replaceable parts To order replaceable parts from Agilent do the following 1 Contact your nearest Agilent Sales Office or Agile...

Page 117: ...C104KAT A C401 C402 0160 6497 CAP FXD 0 1 uF 25 V 04222 12065C104KAT A C404 0160 5967 6 CAP FXD 100 pF 50 V 04222 08051A101JAT A C405 0160 5962 2 CAP FXD 15 pF 50 V 04222 08051A150JAT A C406 0160 5967 CAP FXD 100 pF 50 V 04222 08051A101JAT A C407 0160 5962 CAP FXD 15 pF 50 V 04222 08051A150JAT A C408 0160 5967 CAP FXD 100 pF 50 V 04222 08051A101JAT A C409 0160 6497 CAP FXD 0 1 uF 25 V 04222 12065C...

Page 118: ...20 V TA 04222 TAJB225M020 C711 0180 3859 2 CAP FXD 1000 uF 20 35 VDC S4217 SME35VB102M12 5X25LL C712 0180 3975 CAP FXD 2 2 uF 20 V TA 04222 TAJB225M020 C713 0180 3859 CAP FXD 1000 uF 20 35 VDC S4217 SME35VB102M12 5X25LL C714 C719 0160 6497 CAP FXD 0 1 uF 25 V 04222 12065C104KAT A C720 0160 5942 CAP FXD 1 pF 50 V 04222 08051A1R0CAT A C802 0160 5964 CAP FXD 180 pF 50 V 04222 08051A181JATRA C901 0160...

Page 119: ...2V 5 PD 1 5W IR 5UA 04713 1SMB5920B CR1051 1906 0407 DIODE FW BRDG 400V 1A 71744 DF04S CR1052 1901 1346 1 DIODE TVS D0214AB 43V 1500WP SMCJ43CA 71744 SMCJ43CA E901 9164 0173 1 BEEPER 51406 PKM24 4AO 1 F801 2110 0716 1 FUSE SUBMINIATURE 50A 125V NTD AX UL 75915 R251 500T1 FB401 FB402 9170 1421 7 BEAD SHIELDING CHOKE 28480 9170 1421 FB601 9170 1421 BEAD SHIELDING CHOKE 28480 9170 1421 FB701 FB702 91...

Page 120: ... 0516 TRANSISTOR PD 350 MW FT 600 MHZ 04713 MMBTH81 Q704 1854 1148 TRANSISTOR PD 350 MW FT 650 MHZ 04713 MMBTH10 Q705 1853 0567 TRANSISTOR PD 350 MW FT 250 MHZ 04713 MMBT3906 Q707 1853 0516 TRANSISTOR PD 350 MW FT 600 MHZ 04713 MMBTH81 Q708 1854 1037 TRANSISTOR PD 350 MW FT 300 MHZ 04713 MMBT3904 Q709 1854 1445 1 TRANSISTOR NPN SI SC 59 28480 1854 1445 Q710 5063 1420 1 TRANSISTOR PNP 600 MHZ 28480...

Page 121: ...48K 1 125W TKF TC 0 100 2M627 MCR18 F 3481 R410 0699 2489 3 RESISTOR 10K 0 1 125 W TF TC 0 25 11502 W1206R031002BT R411 0699 1415 19 RESISTOR 100 1 125 W TKF TC 0 100 28480 0699 1415 R412 0699 2937 1 RESISTOR 16K 0 1 125W TF TC 0 25 09021 RN73E2BTE1602B R413 0699 2431 1 RESISTOR 3 32K 1 125 W TKF TC 0 100 28480 0699 2431 R414 0699 1318 RESISTOR 1K 1 125 W TKF TC 0 100 28480 0699 1318 R415 0699 139...

Page 122: ... 0 100 28480 0699 1432 R655 0699 2631 RESISTOR 2K 1 125 W TKF TC 0 100 28480 0699 2631 R656 0699 1415 RESISTOR 100 1 125 W TKF TC 0 100 28480 0699 1415 R657 0699 1366 3 RESISTOR 82 5 1 125 W TKF TC 0 100 28480 0699 1366 R658 0699 1360 1 RESISTOR 46 4 1 125 W TKF TC 0 100 28480 0699 1360 R659 0699 1432 RESISTOR 511 1 125 W TKF TC 0 100 28480 0699 1432 R660 0699 1318 RESISTOR 1K 1 125 W TKF TC 0 100...

Page 123: ...ESISTOR 23 7 0 1 125 W TF TC 0 25 11502 W1206 R03 23R7 B R807 R808 0699 3765 4 RESISTOR 115 1 1206 125 W 100V TC 25 11502 W1206 R03 1150 B R809 0699 3762 4 RESISTOR 53 1 1206 125 W 100V TC 25 11502 W1206 R03 53R0 B R810 R811 0699 3766 2 RESISTOR 232 1 1206 125 W 100V TC 25 11502 W1206 R03 2320 B R812 R813 0699 3763 RESISTOR 69 1 1206 125 W 100V TC 25 11502 W1206 R03 69R0 B R814 0699 3767 2 RESISTO...

Page 124: ... 2190 0577 2 WASHER NO 10 194 IN ID 294 IN OD 20859 03118 U101 1990 1552 3 OPTO ISOLATOR LED IC GATE IF 10 MA MAX 28480 HCPL 2211 300 U102 1821 1479 1 IC BIT SLICE MPU MCU 34649 N80C196KB U103 1820 8907 1 IC GATE ARY CMOS 27014 SCX6206AK0 U104 33120 88861 1 PROG PAL 28480 33120 88861 U105 1818 4777 1 IC 256K BIT SRAM 70 NS CMOS 28480 1818 4777 U106 1818 5699 1 IC CMOS AMB 32 PIN 120 NANOSECONDS 34...

Page 125: ... PLSTC SOIC 28480 1826 1950 U621 1821 0622 1 IC DRVR BICMOS ABT LINE OCTL 18324 74ABT540D U702 1826 1991 1 IC OP AMP HS SINGLE 8 PIN PLSTC SOIC 24355 AD711JR U901 1990 1552 OPTO ISOLATOR LED IC GATE IF 10MA MAX 28480 HCPL 2211 300 U902 1820 7244 IC SCHMITT TRIG CMOS 74AC INV HEX 27014 74AC14SC U903 34401 88842 1 IC ROM PROGRAMMED 28480 34401 88842 U904 1821 1721 1 IC GPIB CONTROLLER 01295 MP9914FN...

Page 126: ...1344 4 RESISTOR 10 1 125 W TKF TC 0 100 28480 0699 1344 R1107 0699 1391 RESISTOR 10K 1 125W TKF TC 0 100 2M627 MCR18FX R1108 0699 1378 1 RESISTOR 2 61K 1 125W TKF TC 0 100 2M627 MCR18FX R1109 0699 1435 1 RESISTOR 681 1 125W TKF TC 0 100 2M627 MCR18FX R1301 1304 0699 1423 4 RESISTOR 215 1 125W TKF TC 0 100 2M627 MCR18FX R1305 1306 0699 1391 RESISTOR 10K 1 125W TKF TC 0 100 2M627 MCR18FX R1307 1308 ...

Page 127: ...M9 0 X 0 75 2MM THK 11239 3 9 03 HDW3 3050 1547 1 WASHER FL MTLC 9 0 9 2 MM ID 14 MM OD AL 11239 4 9 01 HDW4 34401 88304 1 REAR PANEL 28480 34401 88304 KIT1 34401 86010 1 BUMPERS FRNT REAR POWER MOD CVR 28480 34401 86010 KYC1 33120 87411 1 FRONT PANEL KNOB 28480 33120 87411 KYC2 34401 43711 1 PUSH ROD POWER ON 28480 34401 43711 KYC3 34401 45011 1 CARRYING HANDLE 28480 33120 45011 MP2 33120 81911 1...

Page 128: ...9 Mellowes Co Milwaukee WI U S A 53212 24355 Analog Devices Inc Norwood MA U S A 02062 24444 General Semiconductor Ind Inc Tempe AZ U S A 85281 24226 Gowanda Electronics Corp Gowanda NY U S A 14070 25403 NV Philips Elcoma Eindhoven Netherlands 02876 27014 National Semiconductor Corp Santa Clara CA U S A 95052 27264 Molex Inc Lisle IL U S A 60532 28480 Agilent Technologies Inc Palo Alto CA U S A 94...

Page 129: ...8 Schematics 8 ...

Page 130: ...Schematic 136 Output Amplifier Schematic 137 Output Attenuator Schematic 138 Earth Reference Logic Schematic 139 Power Supplies Schematic 140 Display and Keyboard Schematic 141 33120 66521 Component Locator Diagram 142 33120 66502 Component Locator Diagram 143 You may notice parts labeled as No Load on several schematics These are parts that were included in the original design but were removed la...

Page 131: ...Block Diagram 129 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 132: ...ew Slide Off Outer Case Pull To Remove Press Down To Unlatch Cable Pull Up To Disconnect Remove Screw Pry Outward From This Side Front Panel Will Pull Off Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 133: ...33120 66521 sheet 1 of 10 Floating Logic Schematic 131 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 134: ...521 sheet 2 of 10 Digital Waveform Data Synthesis Schematic 132 Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 135: ...33120 66521 sheet 3 of 10 System DAC Schematic 133 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 136: ...33120 66521 sheet 4 of 10 Waveform DAC Schematic 134 Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 137: ...33120 66521 sheet 5 of 10 Filters Schematic 135 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 138: ...521 sheet 6 of 10 Sync Square Wave and Attenuator Schematic 136 Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 139: ...33120 66521 sheet 7 of 10 Output Amplifier Schematic 137 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 140: ...3120 66521 sheet 8 of 10 Output Attenuator Schematic 138 Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 141: ...20 66521 sheet 9 of 10 Earth Reference Logic Schematic 139 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 142: ...33120 66521 sheet 10 of 10 Power Supplies Schematic 140 Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 143: ...120 66502 sheet 1 of 1 Display and Keyboard Schematic 141 Fold Here Fold Here Fold Here Fold Here Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches Ô Binder Edge RH Page Foldout Cut Size 9 x 19 inches ...

Page 144: ...66521 Component Locator Diagram 142 TOP SIDE 33120 66521 REV A Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches Fold Here Fold Here Binder Edge LH Page Õ Foldout Cut Size 9 x 19 inches ...

Page 145: ...TOP SIDE 33120 66502 REV C 33120 66502 Component Locator Diagram 143 ...

Page 146: ... user have a separate written agreement with warranty terms covering the material in this docu ment that conflict with these terms the warranty terms in the separate agreement will control Technologies Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If...

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