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5.3 Troubleshooting Notes

5.3.1

Power Supply

This is the common denominator among malfunctions of all types. Because the GT 9000 has
many regulated supplies, and they are not all used by all circuits, it is possible for the failure of
a single supply to disable only a part of the system. For this reason power supply voltages
should be checked whenever there is a malfunction, even though the malfunction may seem
limited or localized.

WARNING

Dangerously high DC voltages are present inside the Switching Power Supply
module. Do not attempt to open this module.

Power supplies that originate on the A11 PC board are listed in Table 5-1.

Supply

Origin

Application

Fan (~+22.6 V; divided down from +24 V input
from the switching power supply module)

A11-11

Cooling fan

The four +12 V switched supplies listed below are all derived from the +15 V input from the switching power supply
module; they are dedicated to particular band-related amplifiers within the microwave module, and are switched off when
the instrument is not within the frequency range which requires that amplifier.

20-26.5 +12 V

A11-27

amplifier in the microwave module that is ON in
the 20-26.5 GHz range

2-20 +12 V

A11-29

as above, 2-20 range

.01-20 +12 V

A11-31

as above, .01-20 range

.01-2 +12 V

A11-33

as above, .01-2 range

+12 VSB (28-40 +12 V)

A11-15

reserved for future applications

+12 VSA (20-28 +12 V)

A11-19

reserved for future applications

+35 V

A11-83

fluorescent display drivers

Unreg20"
(~+23.4 V)

A11-85

relay driver for AC power relay

+15 VB

A11-95

heater supply for timebase & 100 MHz crystal
oscillator (on in standby mode)

Table 5-1. Power Supplies on the A11 PC Board

Model GT 9000 Microwave Synthesizer

5-6

Manual No. 120AM00250, Rev C, September 1998

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Summary of Contents for GT 9000

Page 1: ...hesizer Certified Product ISO 9001 Certified Process Registra BSI Certification No FM 34226 Registered 04 June 1996 Giga tronics Incorporated 4650 Norris Canyon Road San Ramon California 94583 Telephone 925 328 4650 or 800 726 4442 Telefax 925 328 4700 Customer Service Telephone 800 444 2878 Telefax 925 328 4702 Web Site www gigatronics com ...

Page 2: ...nty DOES NOT cover damage resulting from improper use nor workmanship other than Giga tronics service There is no implied warranty of fitness for a particular purpose nor is Giga tronics liable for any consequential damages Specification and price change privileges are reserved by Giga tronics Giga tronics Service Contacts Territory Primary Contact Secondary Contact Customer Service USA Canada 800...

Page 3: ...tition Rate 1 8 1 3 6 Internally Generated PM Delay 1 8 1 3 7 Internally Generated PM Width 1 8 1 3 8 Externally Triggered PM Envelope 1 8 1 3 9 Externally Generated PM Envelope 1 8 1 3 10 FM Envelope Parameters Wide or Narrow Mode 1 9 1 3 11 FM Envelope Parameters Wide Mode 1 9 1 3 12 FM Envelope Parameters Narrow Mode 1 9 1 3 13 FM Indicator 1 9 1 3 14 Internally Generated FM Envelope Option 24 ...

Page 4: ...Level Control 3 15 3 2 9 Frequency Modulation 3 17 3 2 10 Amplitude Modulation 3 17 3 2 11 Pulse Modulation 3 17 3 3 Assembly Circuit Descriptions 3 18 3 3 1 Front Panel Interface PC Assembly A1 3 18 3 3 2 IEEE TIMER PC Assembly A2 3 18 3 3 3 Memory PC Assembly A3 3 19 3 3 4 CPU PC Assembly A4 3 20 3 3 5 Pulse Driver PC Assembly A5 3 20 3 3 6 Pulse Generator PC Assembly A5A1 3 21 3 3 7 AM FM Drive...

Page 5: ...11 4 2 5 Frequency Range Resolution and Accuracy 4 12 4 2 6 Spurious Signals Tests 4 14 4 2 7 Single Sideband Phase Noise 4 16 4 2 8 RF Output Power Tests 4 17 4 2 9 Pulse Modulation On Off Ratio Test 4 19 4 2 10 Pulse Modulation Rise and Fall Time Test 4 20 4 2 11 Pulse Modulation Overshoot and Settling Time 4 21 4 2 12 Pulse Modulation Accuracy Test 4 23 4 2 13 Internal Pulse Generator Tests 4 2...

Page 6: ...0 PCB ASSY SET 6 5 420BA48600 LEVEL ASY GT9000 6 5 120DA00501 01 26 GHZ FREQ ASSY 6 6 120DA00500 01 20 GHZ FREQ ASSY 6 6 120DA00510 5 20 GHZ FREQ ASSY 6 7 120DA00511 5 26 GHZ FREQ ASSY 6 7 120DA00520 2 20 GHZ FREQ ASSY 6 8 120DA00521 2 26 GHZ FREQ ASSY 6 8 420DA46900 GT9000 STD MICROWAVE DEC 6 9 420CA46800 100 MHZ MT ASY 2SAMP GT9 6 9 004BA00001 SAMPLER ASSEMBLY 6 9 004BA00101 SAMPLER ASSY REVERSE...

Page 7: ...Microwave Deck DWG 420DA46900 7 10 01 26 GHz Frequency Assy DWG 120DA00501 7 11 Front Panel Interface PC Assy A1 DWG 120BA01300 7 12 Front Panel Interface Circuit Schematic A1 DWG 120BS01300 7 13 IEEE Timer PC Assy A2 DWG 120BA05300 7 15 IEEE Timer Circuit Schematic A2 DWG 120BS05300 7 16 Memory PC Assy A3 DWG 120BA01200 7 18 Memory Circuit Schematic A3 DWG 120BS01200 7 19 CPU PC Assy A4 DWG 120BA...

Page 8: ... Assy A101 DWG 120BA07300 7 78 11 Digit Display PC Assy and Circuit Schematic A103 DWG 120BA05520 120BS05520 7 79 5 Digit Display PC Assy A104 DWG 120BA05621 7 80 5 Digit Display Circuit Schematic A104 DWG 120BS05621 7 81 Pushbutton PC Assy and Circuit Schematic A105 DWG 120BA04850 120BS04850 7 82 Data Entry PC Assy A106 DWG 120BA01512 7 83 Data Entry Circuit Schematic A106 DWG 120BS01512 7 84 Mai...

Page 9: ... for Option 20 A 5 A 9 6 Option 20 Components A 6 A 10 Option 22 Rear Panel RF Output Connector A 7 29859 OPT 22B R P RF W O OPT 26 A 7 A 11 Option 23 Type N RF Output Connector A 7 A 12 Option 24 Internal Modulation AM and FM Modes A 8 A 13 Option 25 Planar Crown RF Output Connector A 10 A 14 Option 26 10 dB Step Attenuator A 11 A 15 Option 27 Scan Modulation Linear AM A 12 A 15 1 Option 27 Front...

Page 10: ...reference loop 3 8 Figure 3 7 Downconverter module 3 12 Figure 3 8 Downconverter phase lock loop 3 14 Figure 3 9 Automatic level control AM 3 15 Figure 3 10 Frequency modulation 3 17 Figure 4 1 Frequency Range Resolution Accuracy 4 12 Figure 4 2 Spurious Signals Test 4 14 Figure 4 3 Single Sideband Phase Noise 4 16 Figure 4 4 RF Output Power Tests 4 17 Figure 4 5 Pulse Modulation On Off Ratio Test...

Page 11: ...6 5 GHz 3 11 Table 4 1 Power Supply Test Points 4 2 Table 4 2 YIG Reference Frequency 4 4 Table 4 3 YIG Output Frequency 4 4 Table 4 4 Level Calibration Pot Adjustments 4 5 Table 4 5 FM External Frequency Adjustment 4 9 Table 5 1 Power Supplies on the A11 PC Board 5 6 Table 5 2 Switching Power Supply Module 5 7 Table 5 3 YIG Oscillator Tuning Coil Pins 5 9 Table 5 4 Microwave Module Control Biases...

Page 12: ...Series GT 9000 Microwave Synthesizers x Manual No 120AM00250 Rev C September 1998 ...

Page 13: ...ntrols Chapter 3 Theory Of Operation A description of the instrument s design and internal functioning to the block diagram level Chapter 4 Calibration And Testing Procedures for inspection calibration and performance testing Chapter 5 Maintenance Procedures for maintenance and troubleshooting Chapter 6 Parts Lists Parts lists for all circuit boards and other assemblies Chapter 7 Diagrams Componen...

Page 14: ...Series GT 9000 Microwave Synthesizers xii Manual No 120AM00250 Rev C September 1998 ...

Page 15: ...ld result in injury or death of personnel An example is the proximity of high voltage Caution CAUTION The CAUTION statement is enclosed within a single heavy line and centered in the page This calls attention to a situation or an operating or maintenance procedure or practice which if not strictly corrected or observed could result in temporary or permanent damage to the equipment or loss of effec...

Page 16: ...IG STEP ATTEN Step Attenuator RF Level Detector Coupler Voltage Controlled Oscillator Mixer Fixed Reference Oscillator Switch PIN Diode Leveler LVL Filter Step Recovery Diode Multiplier Digital Data Digital to Analog Converter DAC Phase Lock Loop Isolator Amplifier LOW PASS V R Series GT 9000 Microwave Synthesizers xiv Manual No 120AM00250 Rev C September 1998 ...

Page 17: ...ted replacement pages will be issued as Technical Publication Change Instructions and will be inserted at the front of the binder Remove the corresponding old pages insert the new pages and record the changes here Change Instruction Number Change Instruction Date Date Entered Comments Manual No 120AM00250 Rev C September 1998 xv ...

Page 18: ...Series GT 9000 Microwave Synthesizers xvi Manual No 120AM00250 Rev C September 1998 ...

Page 19: ... been configured for user specific application s supplemental pages will be inserted at the front of the manual binder Remove this page and replace it with the furnished Special Configuration supplemental page s Manual No 120AM00250 Rev C September 1998 xvii ...

Page 20: ...Series GT 9000 Microwave Synthesizers xviii Manual No 120AM00250 Rev C September 1998 ...

Page 21: ...under remote computer control through the IEEE 488 General Purpose Interface Bus GPIB Complete performance specifications are described later in this chapter The GT 9000 has a nominal weight of 43 lbs It measures 5 25 inches high by 16 75 inches wide by 24 inches deep Power requirements are 100 120 220 240 VAC 10 47 400 Hz 250 Watts nominal See Section 1 2 for details on how to set the voltage and...

Page 22: ...out with dry air at a low velocity 1 1 7 Installation and Preparation for Use The GT 9000 is shipped in operational condition and no special installation procedures are required A warm up time of 20 minutes is recommended for normal operation for warm up time prior to calibration and testing see Chapter 4 1 1 8 Receiving Inspection Use care in removing the instrument from the carton and check imme...

Page 23: ...strong tape or metal bands Mark the outside of the package FRAGILE DELICATE INSTRUMENT If corresponding with the factory or local Giga tronics sales office regarding reshipment please reference the full model number and serial number If the instrument is being reshipped for repair enclose all available pertinent data regarding the problem that has been found NOTE If you are returning an instrument...

Page 24: ... approved connector that includes voltage selection fuse and filter for RFI protection The GT 9000 has a 3 wire power cord with a 3 terminal polarized plug for connection to the power source and safety ground WARNING The safety ground is connected directly to the chassis If a 3 to 2 wire adapter is to be used be sure to connect the ground lead from the adapter to earth ground Failure to do this co...

Page 25: ... and fuse proceed as follows 1 Open the cover door and rotate the fuse pull to the left remove the fuse 2 Select the operating voltage by orienting the PC board so that the correct voltage label is on the top left side 3 Push the board firmly into the module slot 4 Rotate the fuse pull back into the normal position and reinsert the fuse into the holder using care to select the correct fuse value O...

Page 26: ... dBm 40 dBc 01 to 1 GHz 50 dBc 1 to 2 GHz 65 dBc 2 to 26 5 GHz Subharmonics None Nonharmonics 55 dBc Single Sideband Phase Noise dBc Hz noise bandwidth all power levels Freq Offset from Carrier 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz 250 MHz 87 87 85 122 135 500 MHz 97 95 95 127 135 2 GHz 90 91 90 125 130 6 GHz 80 83 81 115 130 10 GHz 75 80 80 105 128 20 GHz 72 75 75 105 120 23 GHz 65 70 70 97 108 For 2...

Page 27: ...f 2 dB 10 dBm to maximum specified power Add 1 dB 10 dB with Option 26 Output Flatness 2 dB Output Switching Time Typically 1 ms 20 ms with attenuator change Option 26 Output Impedance 50 Ω nominal Output SWR 2 1 External Leveling Output power may be externally leveled by positive or negative ZBS detectors or power meters 1 3 4 PM Envelope Parameters Pulse Square Wave Modulation PM specifications ...

Page 28: ... greater Jitter 0 01 of setting or 100 ps whichever is greater 1 3 8 Externally Triggered PM Envelope one envelope produced by each trigger supplied Repetition Rate 5 Hz to 5 MHz Pulse Delay Set by internal delay control Pulse Width Set by internal width control Input Trigger Required Positive or negative going TTL level trigger pulse 25 ns wide 1 3 9 Externally Generated PM Envelope one envelope ...

Page 29: ...ical 2 GHz 3 kHz rms typical 2 GHz For 2 26 GHz instruments 3 kHz rms typical 2 GHz 1 3 12 FM Envelope Parameters Narrow Mode Max Deviation The lesser of 25 Fmod or 2 5 MHz peak 2 GHz the lesser of 100 Fmod or 10 MHz peak 2 GHz For 2 26 GHz instruments the lesser of 100 x Fmod or 10 MHz peak 2 GHz Flatness 2 dB for rates from 20 kHz to 1 MHz 3 dB for rates from 1 to 5 MHz Residual FM The same as f...

Page 30: ...ns given here do not apply to instruments with Option 27 see Appendix A for option information AM may be operated simultaneously with FM Modulation Depth 0 to 90 typical at 0 dBm out Modulation Bandwidth DC to 30 kHz 3 dB typical at 0 dBm out Modulation Accuracy Set depth 10 depth e g the depth at a 50 setting may be 40 to 60 1 3 17 AM Indicator Depth Readout 4 digits 0 1 depth resolution Rate Rea...

Page 31: ...t signal for external amplitude modulation FM In Input signal for external frequency modulation PM In Input signal for external pulse modulation 1 3 22 Rear Panel Inputs Outputs type BNC connectors unless otherwise stated 5 6 MHz In A 5 to 6 MHz input at 2 Vpp input impedance is 50 Ω nominal for controlling the frequency of the signal generator it makes possible fine frequency resolution control f...

Page 32: ... Vpp into 1 MΩ 1 3 23 General Specifications Remote Interface IEEE STD 488 1978 all parameters except AC power on off Operating Temperature 0 to 50 C Environmental Complies with MIL T 28800E Type III Class 5 Style E Power 100 120 220 240 VAC 10 50 400 Hz 250 Watts nominal Dimensions 13 3 cm H x 42 5 cm W x 60 9 cm D 5 25 in x 16 75 in x 24 in Volume 1 22 ft 3 0345 m 3 Weight 20 5 kg 45 lbs Model G...

Page 33: ...ramming GT 9000 Syntax Remote Programming 1026 Syntax 2 2 The Front Panel The Model GT 9000 front panel is versatile and easy to use It is designed with displays and fields as illustrated in Figure 2 1 Displays and fields are contained within surrounding borders and are discussed in the following sections to identify their functions Figure 2 1 Front Panel Layout Manual No 120AM00250 Rev C Septembe...

Page 34: ...ch needs to be specified for the selected function The bottom line displays the current value of that parameter The value can be changed with the keypad digi dial or up down keys At power on the Entry Menu displays the model and frequency range of the instrument e g MODEL GT 9000 10 MHz to 26 GHz The last settings made before power off remain in effect The default settings can be enabled with the ...

Page 35: ...method is to key in digits with the numeric keypad The keyed digits appear in the bottom line of the Entry Menu When all digits have been entered press the appropriate units key the right column in the numeric keypad The key located below the numeric 3 key has a dual function If it is pressed before a numeric key a minus sign will precede the value entered If it is pressed after one or more numeri...

Page 36: ...bled and turns off when they are disabled When you are finished using the digi dial and up down keys press Entry ON to disable their operation so that erroneous information will not be entered if they are touched inadvertently Entry Resolution The resolution of the digi dial and the up down keys is programmable and is set for both at the same time Entry resolution is limited only by the resolution...

Page 37: ...followed by the numeric key which performs the shifted function Reset 0 Press SHIFT RESET to reset parameters to the default conditions listed in Table 2 1 Parameter Default Condition Parameter Default Condition CW Frequency Minimum FM Rate Opt 24 1 kHz RF On FM Mode Opt 24 Sine RF Level 0 dBm FM Deviation 5 MHz Amplitude Modulation Off Pulse Modulation Off AM Rate Opt 24 1 kHz PM Rate 100 kHz AM ...

Page 38: ...output level to be varied across what would ordinarily be an attenuator switch point to prevent the slight discontinuity in level which can occur at such a switch point Offset 4 The OFFSET function makes it possible to add an offset to the frequency display for convenience in certain test applications involving mixers The offset can be positive or negative The size of the offset is limited by the ...

Page 39: ...ON FREQ CNG This function controls RF power output during frequency changes except during band or filter changes Press ON or OFF to enable or disable this function 40 HP GPIB Syntax Press ON to use the normal GT 9000 remote control command set 41 GT GPIB Syntax Press ON to use the Giga tronics 1026 remote control command set 50 Yig Fast Mode Press ON or OFF to enable or disable this function is us...

Page 40: ...e at any time with the digi dial and up down keys see Section 2 2 2 If it is necessary to change the step resolution of the digi dial or the up down keys press the Entry RESOLUTION key then use the up down keys or the numeric keypad and units keys to select the desired resolution The Entry Menu will show FREQ RESOLUTION while you are adjusting the resolution After the resolution is set press CW ag...

Page 41: ...e the output and Power display to the selected level Fine adjustments of the power can be made at any time with the digi dial and up down keys see Section 2 2 2 If it is necessary to change the power resolution of the digi dial or the up down keys press the Entry RESOLUTION key then use the up down keys or the numeric keypad and units keys to select the desired resolution The Entry Menu will displ...

Page 42: ... it is necessary to select sub functions as well For example the PM function requires you to specify such parameters as rate width and delay Sub functions are selected by means of the MODE and SCROLL keys in the Functions field Use the MODE key to change the mode to any of the selections below INT Internal EXT PULS External pulse positive true EXT PULS External pulse negative true PM TRIG External...

Page 43: ...ic keys to enter the value Press SCROLL again and DELY appears on the Entry Menu Use the numeric keys to enter the value Now press ON to activate Pulse Modulation Fine adjustments of rate width and delay can be made at any time with the digi dial and up down keys see Section 2 2 2 If it is necessary to change the step resolution of the digi dial or the up down keys press the RESOLUTION key then us...

Page 44: ...again The Narrow FM mode is indicated by FMn in the Entry Menu Use the MODE key in the FUNCTION field to change the mode SIN Sine wave Option 24 only SQR Square wave Option 24 only TRI Triangle wave Option 24 only EXT External source Use the SCROLL key in the FUNCTION field to select the parameters RATE Modulation rate Option 24 only DEV Deviation When either RATE or DEV is selected the appropriat...

Page 45: ... or DEV can be made at any time with the digi dial and up down keys Press SCROLL to select the parameter to be adjusted then enable the digi dial and the up down keys see Section 2 2 2 If it is necessary to change the step resolution of the digi dial or the up down keys press the RESOLUTION key then use the up down keys or the numeric keypad and units keys to select the desired resolution The Entr...

Page 46: ...value Use the MODE key in the FUNCTION field to change the mode SIN Sine wave Option 24 only SQR Square wave Option 24 only TRI Triangle wave Option 24 only EXT External source Use the SCROLL key in the FUNCTION field to select the parameters Rate Modulation rate Option 24 only Depth Modulation depth When either RATE or DEPTH is selected the appropriate numeric value can be entered via the data en...

Page 47: ...stments of RATE or DEPTH can be made at any time with the digi dial and up down keys Press SCROLL to select the parameter to be adjusted then enable the digi dial and the up down keys see Section 2 2 2 If it is necessary to change the step resolution of the digi dial or the up down keys press the RESOLUTION key then use the up down keys or the numeric keypad and units keys to select the desired re...

Page 48: ...ides the internal time base To specify the frequency of the external timebase press SHIFT SPECIAL 11 Press MODE to toggle between the 10 MHz and 5 MHz settings ALC IN An input signal for remote level control of output power by positive or negative polarity ZBS detectors or by applicable power meters see Section 1 3 20 for specifications PM VIDEO OUT A pulse modulation envelope waveform at TTL leve...

Page 49: ...o Capability L4 Listener Basic Listener No Listen Only Unaddressed if MTA LEO Extended Listener No Capability SRO Service Request No Capability RL2 Remote Local Complete Capability PPO Parallel Poll No Capability DCO Device Clear No Capability DTO Device Trigger No Capability CO Controller No Capability Hardware Interface A standard IEEE 488 interface cable can be used to connect the GT 9000 to a ...

Page 50: ... upon receipt of a character sent with the EOI line asserted or upon receipt of any of the following delimiter characters CR LF Multiple commands can be sent in a single message if they are separated from each other by a space or one of the delimiter characters Each command will be interpreted individually upon receipt If spaces are used to separate commands care must be taken to assure that the 4...

Page 51: ...hese letters are interpreted as follows a Indicates that alphanumeric characters are expected b Indicates that one or more 8 bit bytes entered in binary form are expected d Indicates that a decimal number is expected Decimal numbers can be signed Exponents may be indicated by an E thus 4 5E 6 represents 4 5 10 6 h Indicates that a hexadecimal number is expected n Indicates that a single digit 0 9 ...

Page 52: ...3 AMF square on AMF3 Activate internal linear AM with a square wave Opt 27 AMF4 AMF tri on AMF4 Activate internal linear AM with a triangle wave Opt 27 AR d t AM int rate AR400HZ Set the internal AM rate to 400 Hz Opt 24 AT d t set attenuator independently of level control in 10 dB increments AT80DB Set the attenuator to 80 dB the attenuator must first be uncoupled from the level control system by...

Page 53: ...his command list KR keyboard release KR Not applicable to this model LC 0 level correction off These commands are used for diagnostic purposes only LC 1 level correction on MA h memory address set NM next modulation FM NM Toggle between the available FM modes NSR never say remote NSR Activates the front panel controls and displays the instrument accepts commands via the front panel controls AND th...

Page 54: ...RFD1 RF ON Freq Cng on RFD1 SB h set bit This command is used for diagnostic purposes only SC0 scan off SC0 Deactivate scan modulation or variable attenuation Opt 27 SC1 scan ext on SC1 Activate external scan modulation Opt 27 SC2 scan sine on SC2 Activate internal scan modulation Opts 24 27 with a sine wave SC3 scan square on SC3 Activate internal scan modulation Opts 24 27 with a square wave SC4...

Page 55: ...t power resolution SP1DB Set the power resolution to 1 dB SR d t internal scan mod rate SR2KZ Set the internal scan modulation rate to 2 kHz Opts 24 27 SV n save instrument state SV4 Store the current front panel setup in memory location 4 UN 0 unlocked mode off UN0 Disable enable the unlocked mode in unlocked mode the output phase lock loop is disabled UN 1 unlocked mode on UN1 UP up step UP Equi...

Page 56: ...nel functions scroll and mode are reset to their initial state before other keystrokes modify them Virtual Keystrokes KK Command in GT 9000 Syntax Code Key Shifted Key Code Key Shifted Key 00 90 OFF 01 91 ON 02 FREQ 92 MODE 10 93 SCROLL 11 94 MODE 0 20 95 SCROLL 0 21 A0 UP 22 A1 DOWN 23 C0 RESOLUTION 24 D0 0 RESET 30 D1 1 TEST 31 D2 2 ATTEN 32 D3 3 ALT 33 D4 4 OFFSET 40 LEVEL MAX D5 5 MULT 50 PM D...

Page 57: ...gument is omitted the GT command for example Sometimes the argument consists of a number In the command FAz12 3E 3 FA is the verb and 12 3E 3 is the argument Numeric arguments are used in the frequency and level setting commands and are represented in command descriptions by a lower case n The format for numeric arguments is sufficiently flexible that no special formatting will be needed when usin...

Page 58: ...l amplitude modulation MODzCONTzOFF AM scan modulation off MODzCONTzSCAN scan modulation on MODzCONTzAM external AM on MODzDESCRzEXT external pulse modulation rising edge triggered MODzDESCRzEXT external pulse modulation falling edge triggered MODzDESCRzOFF pulse modulation off MODzDESCRzPULSE internal pulse modulation MODzDESCRzSQR internal pulse modulation 50 duty cycle MODzEXT external pulse mo...

Page 59: ...nd phase lock loop circuits The PC assemblies in the CPU bus make up the internal computer and peripheral circuits to control the level and modulation of the RF output The microwave deck houses the microwave frequency devices The YIG oscillators are mounted on the underside of the microwave deck In instruments which include the downconverter range below 2 GHz a downconverter module is mounted on t...

Page 60: ...nformation unique to the individual instrument The computer generates and receives digital information required for operation of almost every instrument function In this respect it receives and interprets the commands through either the front panel pushbuttons or the remote interface returns information to the operator through either the front panel displays or the remote interface selects appropr...

Page 61: ...e difference between the two inputs see Figure 3 3 For example a 10 MHz source with a stability of 1 x 10 6 year is to transfer that stability to a voltage controlled oscillator VCO The 10 MHz source is applied to the reference input of a phase lock loop circuit The signal from the VCO is applied to the variable input A phase detector in the PLL compares the two inputs and determines whether the v...

Page 62: ...ncies can be phase locked to the same reference with the limitation that all must be exact multiples of that reference One of the PLLs employed in this instrument for example has a divide by N circuit that can be programmed with 300 different integer divisors therefore it can phase lock 300 different frequencies to the same reference The phase lock loops used in Giga tronics instruments employ int...

Page 63: ...hnique to produce stable and spectrally pure frequencies over a wide frequency range The two loops are 1 the output loop which phase locks the synthesizer output frequency to a reference frequency and 2 the reference loop which phase locks the reference frequency to the timebase The timebase or master reference is a highly stable 10 MHz source built into the instrument An external source can be ea...

Page 64: ...her words the IF output has a range of 95 to 395 MHz The output loop requires a 1 MHz signal from the divide by N circuit regardless of the output frequency because the output loop phase detector compares the output of the divide by N with a timebase derived 1 MHz reference Therefore the divide by N must be programmed so as to divide the mixer IF down to 1 MHz the range of divisors for this circui...

Page 65: ... too high or too low in frequency and sends to the output YIG FM coil whatever correction is needed to reduce the error In this way the output frequency can be fine tuned to 3000 MHz with the result that the mixer IF becomes precisely 95 MHz the divide by N programmed with a divisor of 95 supplies a precise 1 MHz input to the output PLL and phase lock is achieved Theory of Operation Manual No 120A...

Page 66: ...he microwave signal produced by the reference oscillator Since these harmonics generated by the multiplier are all based on the 100 MHz VCXO they have the same stability as the VCXO Since the 100 MHz VCXO is phase locked to the master reference these harmonics have the same stability as the master reference The 100 MHz VCXO is controlled by the 100 MHz PLL circuit which compares the 10 MHz master ...

Page 67: ...s not actually capable of choosing harmonics its IF output includes many intermodulation products but these higher frequencies are excluded by a low pass filter on the sampling mixer output Only an IF in the desired range can pass through to the phase detector of the reference loop The choice of a 5 MHz or 1 667 MHz offset is determined by the output frequency The 1 667 MHz offset is used when the...

Page 68: ...105 4500 4599 4405 975 999 3805 1825 1849 7205 4600 4699 4505 1000 1024 3905 1850 1874 7305 4700 4799 4605 1025 1049 4005 1875 1899 7405 4800 4899 4705 1050 1074 4105 1900 1924 7505 4900 4999 4805 1075 1099 4205 1925 1949 7605 5000 5099 4905 1100 1124 4305 1950 1974 7705 5100 5199 5005 1125 1149 4405 1975 1999 7805 5200 5299 5105 5300 5399 5205 7700 7799 7605 13600 13899 4501 667 5400 5499 5305 78...

Page 69: ...erence frequencies to 26 5 GHz For instruments to 26 5 GHz the range above 20 GHz is generated by a 20 26 YIG oscillator The reference frequencies for the different ranges are listed in Table 3 2 fOUT fREF fOUT fREF fOUT fREF 20000 20199 6601 667 22000 22299 7301 667 24100 24699 8101 667 20200 20499 6701 667 22300 22599 7401 667 24700 24999 8201 667 20500 20799 6801 667 22600 22899 7501 667 25000 ...

Page 70: ...ired output Frequencies in the range of 500 to 875 MHz are generated in almost exactly the same way except that a different Divide by 4 circuit with a lower input range is used In this band the YIG is tuned by the Output PLL to a frequency in the range of 2000 to 3500 MHz and the divider reduces it to the desired output frequency Frequencies in the range of 10 to 500 MHz are generated by downconve...

Page 71: ...nverter mixer and the downconverter PLL are not used all frequencies up to 2000 MHz are generated by the 2 to 8 GHz YIG and divided down to the desired output A second downconverter scheme bypasses the frequency dividers and uses the downconverter mixer to generate the entire 10 to 2000 MHz range In this scheme the 8 20 YIG is tuned to a frequency in the range of 8015 to 10005 this frequency mixed...

Page 72: ...Figure 3 8 Downconverter phase lock loop Model GT 9000 Microwave Synthesizer 3 14 Manual No 120AM00250 Rev C September 1998 ...

Page 73: ...level coupler detector in the RF path The reference input is generated by the computer based on the requested level setting and on correction data stored in memory The output correction signal drives a leveler a variable attenuator circuit placed in the RF path ahead of the level detector The CPU programs a digital to analog converter with level data including correction factors stored in the char...

Page 74: ...ied and furnished to the summing junction of the loop amplifier The loop amplifier output drives a PIN diode attenuator circuit also known as a leveler in the RF output path in order to adjust the output level The loop amplifier drives the leveler in whichever direction will equalize the detector feedback signal and the reference signal Two separate level detectors are used for the output ranges a...

Page 75: ...endix A 3 2 11 Pulse Modulation Pulse modulation is essentially a means of shutting off the output signal for short periods The modulation OFF pulses are applied to PIN diode switches within the RF module During the OFF intervals the particular RF path which is normally activated for the present output frequency is temporarily shut down That is during the ON periods one output path is open and dur...

Page 76: ...ady line which slows the CPU as required for read cycles to occur When the front panel knob is turned the optical decoder generates pulses at U8A and U8B the flip flops of U8 are set so that the output at U8 9 indicates which way the knob was turned U8 5 flips generating an interrupt via U11C When the computer selects the knob to be read a chip select is received at U7B from U1 to clear the interr...

Page 77: ...age U5 through U14 are ROMs used to store the operational software The RAMs and ROMs are 32K x 8 and are used in pairs one for even addresses and the other used for odd to simulate 32K x 16 as required by the 16 bit data bus Theory of Operation Manual No 120AM00250 Rev C September 1998 3 19 ...

Page 78: ...s to propagate U2A or B selecting or edge triggering when EXT TRIG or or EXT PULS or is selected In the case of EXT TRIG the trigger signal TRIGN is supplied to the pulse generator PC assembly A5A1 via U4D U8C and U9C The external pulse signal from U2A or B passes thru U2D to the pulse drivers when U2D is enabled via U3A and the EXTPUL logic signal The PULSE signal from the pulse generator PC asse...

Page 79: ... causes U6 15 to go high This signal after propagating through U13A and U33B is the actual pulse signal which will ultimately drive the RF pulse modulators The width is also generated in 10 ns increments and the counters U11 U25 U26 and U27 are set up similar to those which control the delay cycles The width cycle ends when both inputs to U8C are low to reset U6 this is controlled by U11 COUT and ...

Page 80: ...data becomes DAC U15 input data The output of this DAC will be the sine or triangle wave whichever was selected The components L1 L2 C21 C22 C23 form a low pass filter required to filter glitches out of the 10 MHz clock The SINE CAL pot R4 is used to adjust the amplitude of the sine wave which is then amplified by U16A The output is switched by analog switch U20 or U21 U21 can be switched to allow...

Page 81: ... The comparison is made at the summing junction of an op amp integrator The output of the integrator controls PIN leveling diodes to adjust the RF power level The power level is detected and amplified as required and returned as the variable input to the integrator On this board U17A is the op amp integrator Its summing junction at pin 2 compares a reference input and the detected RF input The ref...

Page 82: ...its control voltage at U5A and inverted at U5B forming a composite signal used for appropriately modulating the reference signal at U8 VR3 and R51 are set to limit the control voltage so that it does not overdrive the modulator U31 is a DAC programmed by the computer to give an output voltage at U32B This voltage is the appropriate offset required for the PIN leveling diode drivers on the A10A1 le...

Page 83: ...iminate fan generated noise The 15 V input at J1 23 is furnished to the front panel display drivers and also through power FETs Q1 through Q6 to various band related sections of the microwave module To minimize power dissipation in this module each FET is switched on only when the associated frequency band is in use The FETs are switched by gates U7A through U7 F which are in turn switched by the ...

Page 84: ...the supply to the internal 10MHz reference The switching circuit also enables the external reference path at U12A and disables the internal reference at U12C The selected reference is then available through Q1 and Q2 as the 10 MHz reference output on the rear panel The phase comparator U5 compares the 10 MHz reference with the output of the divider U4 and determines which signal leads or lags the ...

Page 85: ...nd frequency input to the U16 mixer circuit is produced by a second VCO Q4 having the same range 100 120 MHz but programmed in finer increments 20 Hz This VCO is controlled by a PLL circuit consisting of a phase comparator U12 and a filter amplifier circuit U13A The inputs to the phase comparator consist of feedback from the mixer circuit U16 15 and a reference input from a third VCO circuit Q1 di...

Page 86: ...eing below a certain voltage level set by R79 32 and 33 and kick U6 such that the output at pin 1 will go high thereby increasing the output frequency Whenever the circuits U7 kick C10 or C9 are charged so that the lock detector U8 pulls the REF_LOCK signal low thereby illuminating the lock LED DS1 The 5 MHz input to the phase detector is derived either from the 10 MHz input at J4 or from the 5 6 ...

Page 87: ...d MEAS logic drives for the computer are provided by U29 U27 provides chip selects for various IC s on the board and U26 and U28 serve as buffers required for computer bus interface Theory of Operation Manual No 120AM00250 Rev C September 1998 3 29 ...

Page 88: ...ing down U11 divides the IF by 8 In the case of most divisors it is necessary for the IF to be divided by 9 for some portion of the division cycle only when the three lowest bits are all zero is U11 programmed as a Mod 8 counter throughout the division cycle a situation which can only occur if the divisor itself happens to be an even multiple of 8 Whenever it reaches zero U5 stops counting until i...

Page 89: ...onditions that would interfere with normal operation of the phase lock loop Under normal conditions with an IF input in the 95 395 range the clock frequency applied to U10 4 will be above 10 MHz The filter components between the three gates produce a low at U10 12 and the third gate does not interfere with the circuit output frequency If the IF drops substantially below the normal range however an...

Page 90: ...applied to one of three summing junctions Analog switches U19A and B select one of 3 circuits U20 U21 or U22 which drive the FM tuning coils of the output YIG oscillators for each frequency band U6 is a lock detector circuit which detects when the loop voltage goes beyond a given window thus indicating that the loop is unlocked This circuit pulls the output lock signal low causing the lock LED DS1...

Page 91: ... bus interface 3 3 19 Display Driver PC Assembly A20 The Display Driver PC assembly drives the fluorescent displays and the LEDs on the front panel U2 is a counter which is clocked by U1 It cycles thru the addresses corresponding to each display digit and its segments When the computer updates the display or when a setting has been changed the LD line is activated and counter U2 stops counting and...

Page 92: ... is an important part of the leveling system The 2 5 MHz Reference signal is received from the level board A10 at J7 This signal is detected by a detector at J6 and a DC voltage proportional to the power level of the reference signal is returned L1 L2 C15 and C16 filter the reference signal from the DC voltage returned from the detector which is then amplified by U5 and returned to the leveling bo...

Page 93: ...r the 10 12 MHz PLL 1 kHz Resolution Circuit if installed Sampler Drive The twin amplifier circuits Q3 Q4 and Q5 Q6 supply a large 4 6 Vpp 100 MHz signal to the sampling mixers Variable capacitors C32 and C33 are used for peaking this signal The sampling mixers include a step recovery diode multiplier which produces numerous harmonics of the 100 MHz input The RF input to the sampler is mixed with ...

Page 94: ...Model GT 9000 Microwave Synthesizer 3 36 Manual No 120AM00250 Rev C September 1998 ...

Page 95: ...being used or if timebase accuracy tests are not to be done 4 1 1 Recommended Equipment Frequency Standard 10 MHz Oscilloscope Tektronix 2465 or equivalent Microwave Frequency Counter Systron Donner 6245B or equivalent Power Meter Sensor Giga tronics 8541 with 80303 sensor or equivalent Spectrum Analyzer HP 8566B or equivalent Detector Herotek Model DZ262 44 or equivalent Function Audio Generator ...

Page 96: ... 12B pot c On A11 check TP3 for 35 0 V Adjust the 35 pot 2 On the A101 motherboard or at test points on the A11 board verify that the voltages in Table 4 1 are accurate within 0 3 volts Supply Location Color 20 V A11 85 Brown 8 V A A11 15 or TP2 White Gray 12 V B A11 19 or TP1 Red Black 15 V hot A11 95 Blue Black 24 V A101 Orange or Yellow 15 V A101 Blue 15 V A101 Violet 5 2 V A101 Green 5 V A101 ...

Page 97: ...at least 2 Vpp into 50 Ω Disconnect the BNC cable from the scope 6 While the BNC cable is still connected to REF OUT connect the other end of this cable into the rear panel REF IN connector Verify that the instrument unlocks on A14 the unlock LED is on the lock LED on the front panel is off Disconnect the BNC cable 4 1 4 Sampler Drivers 100 MHz VCO Optional This procedure is optional 1 Remove the ...

Page 98: ...Monitor TP1 on the A18 board On the A19 board adjust the min and max pots of the output YIG drivers at the min and max frequencies of the YIGs for test point voltages of 0 V 1V on TP1 Refer to Table 4 3 Set Frequency GHz Adjust Pot A19 7 9 R12 Max 2 1 R11 Min 20 0 R24 Max 8 0 R23 Min 26 0 R26 Min 20 0 R35 Max 5 Since the min and max pots for each YIG interact repeat step 4 for each band until the ...

Page 99: ...GHz ENTER 1 GHz 0 dBm LIN 2 pot R4 LIN 2 pot R3 10 dBm GAIN 2 pot R29 GAIN 2 pot R27 9 dBm OFFSET 2 pot R30 OFFSET 2 pot R28 Extended Vernier Leveling The following steps extend the leveling range from 15 to 9 dBm to a leveling range of 15 to 20 dBm 1 Select 2 1 GHz Press SHIFT ATTEN to ON Enter a LEVEL of 20 dBm 2 On the A10 board adjust R30 OFFSET 2 for a reading of 19 8 dBm 0 1 dB on the power ...

Page 100: ...AM SQR is selected vary the AM rate Verify that the counter display is same as the frequency display Turn off AM FM Procedure Setup 1 On the rear panel connect FM SIG OUT to channel 2 on the scope Connect a frequency counter to Channel 2 Out 2 Select FM SIN at 10 MHz DEV and a 1 kHz rate At FM SIG OUT verify that the signal is present at a nominal 2 Vpp into 1 MΩ 3 Select FM TRI Verify a clean sig...

Page 101: ...nel connect PM SYNC OUT to Channel 1 on the scope and PM VIDEO OUT to channel 2 This setup is to verify that SYNC OUT is aligned with VIDEO OUT 2 Trigger scope on Channel 1 Ensure that SYNC OUT is 1 Vpp into 50 Ω and that the sync pulse width is 50 ns wide 5 ns 3 Verify that PM VIDEO and SYNC OUT are aligned within 5 ns Delay Test Setup 1 Connect Input A on a Universal counter or equivalent to SYN...

Page 102: ...t for 4 2 GHz at 10 dBm 4 Connect the mixer IF OUT to the 8902A measuring receiver with filters set at 50 Hz and 15 kHz 5 Select the AM mode with p p divide by 2 on the 8902A receiver Optional connect the receiver modulation output to channel 2 on the scope 6 Select 4 GHz and 0 dBm on the UUT AM External Procedures 1 Select AM EXT at 50 2 On A10 if required adjust R5 for a 50 reading on the receiv...

Page 103: ...ect Channel 2 on the scope to the modulation output on the receiver FM External Procedure 1 Select FM EXT at 1 MHz deviation 2 Use the external generator to apply a 1 kHz sine with 2 Vpp at FM IN Measure the sine wave on the scope to ensure accuracy 3 Select the frequencies listed in Table 4 5 in order and adjust the specified pot if required for 25 0 05 kHz NOTE The 1 GHz test step is a functiona...

Page 104: ...nect the output from a frequency standard 10 MHz to the external trigger input Channel 1 Adjust the scope to trigger on Channel 1 2 On the rear panel of the unit connect a cable to REF OUT Connect the other end of this cable to the vertical input on the scope Verify that the 10 MHz signal trace does not drift more than 100 ns in 1 second 3 If adjustments are required remove the top cover of the un...

Page 105: ...ous readings taken The specification and tolerance range is listed to allow ease of verification It is suggested that copies be made of the manual sheets When automated tests are run a printed data sheet is produced 4 2 3 Calibration Cycle Periodic calibration and performance verification is required to insure proper instrument performance The instrument should be calibrated and checked at least o...

Page 106: ...rm up Since the UUT and the counter use the same time base time base errors are eliminated The UUT will automatically switch to the external reference when it is connected 2 Press SHIFT RESET on the UUT then set the UUT to its minimum frequency Press LEVEL and enter 1 0 dBm The counter should read the frequency set the counter resolution 3 Connect the UUT RF out to the counter 500 MHz 40 GHz input...

Page 107: ... manner that any incorrect digital programming data being sent to the 1 Hz Resolution assembly will be detected Improper operation of the 1 Hz assembly will also be indicated Refer to the Test Data Sheet and program each of the listed frequencies into the UUT Calibration and Testing Manual No 120AM00250 Rev C September 1998 4 13 ...

Page 108: ... the range of the particular instrument The RF amplitude should be at 0 dBm the reset value Press the RF ON OFF button and turn on the RF output 2 Set the spectrum analyzer to view the UUT output signal Adjust the analyzer reference level such that the peak of the displayed signal is at the top graticule line 3 Set the spectrum analyzer to maximum span with the signal centered on the screen Gradua...

Page 109: ...al from the GT 9000 for example at the spurious frequency The digi dial of the GT 9000 may generate some noise spikes when it is rotated The acquisition of the various phase lock loops in the instrument can also cause transients within the specified settling time Both of these effects will disappear when a steady state condition has been reached It is important to identify the particular class of ...

Page 110: ...nalyzer input Place the UUT on a foam pad to isolate it from any external mechanical vibrations which could affect the phase noise measurement 2 Press SHIFT RESET on the UUT 3 For the first frequency on the Test Data Sheet which is within the range of the instrument press CW and enter the frequency Tune the spectrum analyzer to the generator frequency and adjust the UUT RF level to obtain a refere...

Page 111: ...y it is extremely tedious It is strongly recommended that an automated system be set up to take and record the data Three tests are run The first measures the maximum available output with the level control loop disabled The second verifies the accuracy and flatness across the operating frequency range at a fixed output 0 dBm The remaining test checks the step attenuator accuracy at a number of fr...

Page 112: ...gain step the frequency across the operating range measure correct and plot the power 3 For instruments with Option 26 Connect the UUT to the measuring receiver via the downconverter With the UUT at 0 dBm and set to the first test frequency establish a reference on the receiver Reduce the UUT output in 10 dB steps observing and recording the receiver reading As needed perform the recalibration req...

Page 113: ...to place the line at the top of the screen graticule adjust analyzer reference level as needed 4 Set the pulse modulation on the UUT as follows Press PM RATE 100 HZ WIDTH 5 MS to establish a 100 Hz squarewave 5 Adjust the analyzer sweep time to display a few cycles of the waveform Use internal triggering Reduce resolution bandwidth and carefully retune the analyzer center frequency until the maxim...

Page 114: ...the frequency to the first Test Data Sheet frequency which is within the operating range of the instrument 3 Enable the pulse modulation of the UUT by pressing PM MODE INT SCROLL RATE 1 MHZ SCROLL WIDTH 5 US ON 4 Set the oscilloscope to 5 mV div and using the RF Level control of the UUT adjust the peak to peak oscilloscope display to fall on the dotted lines on the screen 100 and 0 Adjust the osci...

Page 115: ...he first Test Data Sheet frequency which is within the operating range of the instrument 3 Enable the pulse modulation of the UUT by pressing PM MODE INT SCROLL RATE 1 MHZ SCROLL WIDTH 5 US ON 4 Set the oscilloscope to 5 mv div and using the RF Level control of the UUT and the vertical position of the oscilloscope adjust the peak to peak oscilloscope display to be from the top of the screen pulse ...

Page 116: ...ulse on level Return to the original level Measure and record any undershoot overshoot of the signal 6 Repeat steps 4 to 5 for each of the Test Data Sheet frequencies which is within the operating range of the instrument Model GT 9000 Microwave Synthesizer 4 22 Manual No 120AM00250 Rev C September 1998 ...

Page 117: ...to the centerline of the screen Change the level setting of the UUT by plus and minus 1 dB and note the trace position on the screen Return to 0 dBm 4 Enable the pulse modulation of the UUT by pressing PM MODE INT SCROLL RATE 200 kHz SCROLL WIDTH 1 US ON 5 Measure and record the difference between the CW reference level and the negative peak of the pulse 6 Change the pulse width to 50 ns and again...

Page 118: ...nput and the PM Video to the B input 2 Set the counter to measure Freq A For each Repetition Rate shown on the Test Data Sheet measure and record the actual Pulse Repetition Frequency 3 Set the counter to measure TI A to B For each Delay shown on the Test Data Sheet measure and record the actual Pulse Delay 4 Disconnect Sync from Channel A Connect Video to Channel A Set the counter to measure Puls...

Page 119: ...delay can be obtained by using two coaxial cables of for example 5 and 10 inches in length The outputs of these delay lines are furnished to the two inputs of the RF mixer For certain frequencies which may be identified by experiment the mixer will produce a DC voltage near zero The number of null frequencies can be increased by making the delay lines longer in absolute terms or by increasing the ...

Page 120: ... the null point 3 Instruments with Option 24 Set the UUT to the FM internal 100 kHz SINE mode Set the FM deviation to 3 MHz Verify that the waveform is six divisions peak to peak 3 divisions 4 Set the UUT to EXT FM Connect the function generator set it to 100 kHz rate SINE wave 2 Vpp Verify that the waveform is 6 divisions peak to peak 3 5 Adjust the UUT FM deviation for exactly a six division pea...

Page 121: ...a Sheet to verify proper resolution and range of the output The counter should be in frequency measurement mode for these tests 4 Disconnect the modulation generator output from the counter and connect it to the oscilloscope Select SQR SIN and TRI waveforms and verify a proper waveform 5 Set the UUT to FM INT SQR and connect the FM out to the counter Set the FM RATE to 10 Hz and using the period m...

Page 122: ...Model GT 9000 Microwave Synthesizer 4 28 Manual No 120AM00250 Rev C September 1998 ...

Page 123: ...curacy Accuracy at the UUT maximum frequency Divide by N test frequencies 2 111 GHz 2 222 GHz 2 444 GHz 2 888 GHz 2 123 GHz 2 987 GHz 1 Hz Resolution test frequencies Note use any frequency for the 100 kHz digits XXXX 000000 MHz XXXX 111111 MHz XXXX 222222 MHz XXXX 444444 MHz XXXX 888888 MHz XXXX 123456 MHz XXXX 987654 MHz Spurious Signals Tests Frequency MHz Harmonics Non Harmonics 770 550 1513 4...

Page 124: ... 1513 425 3536 171 9182 433 17361 522 23541 349 RF Output Power Test Result Max Power Level Power Level 1 dB Step Attenuator test frequencies 1 0 GHz 4 0 GHz 12 0 GHz 17 0 GHz Pulse Modulation Tests Frequency GHz On Off 80 dB Rise Fall 10 ns Overshoot 2 dB Settling 100 ns Accuracy 5 1 dB 1 0 4 0 12 0 22 0 Model GT 9000 Microwave Synthesizer 4 30 Manual No 120AM00250 Rev C September 1998 ...

Page 125: ...99 8 500 2 Pulse Generator Tests Delay Delay Set Tolerance Measured 5 sec 495 505 50 ms 49 5 50 5 5 ms 4 95 5 05 5 ms 495 505 50 µs 49 5 50 5 5 µs 4 95 5 05 5 µs 480 520 50 ns 30 70 Pulse Generator Tests Width Width Set Tolerance Measured 5 sec 495 505 50 ms 49 5 50 5 5 ms 4 95 5 05 5 ms 495 505 50 µs 49 5 50 5 5 µs 4 95 5 05 5 µs 480 520 100 ns 80 120 Calibration and Testing Manual No 120AM00250 ...

Page 126: ...div Bandwidth 5 7 div Bandwidth 4 8 div Internal Modulation Generator Tests Opt 24 Test Result AM Accuracy test 001 Hz 1 Hz 100 Hz 1 kHz 10 kHz 100 kHz AM Mode Waveforms Square Sine Triangle FM Accuracy test 001 Hz 1 Hz 100 Hz 1 kHz 10 kHz 100 kHz FM Mode Waveforms Square Sine Triangle Model GT 9000 Microwave Synthesizer 4 32 Manual No 120AM00250 Rev C September 1998 ...

Page 127: ...ated to a particular plug in module for which a replacement can be sent Before any other analysis is attempted three potential problem areas should be eliminated First be sure that all front and rear panel controls are properly set An apparent malfunction may be the result of an operator error such as selecting external modulation without furnishing the needed modulation input Second establish whe...

Page 128: ... may or may not be lit Recommendations 1 Check the power supplies see Section 5 3 1 2 If the LOCK LED is not lit check the YIG oscillator see Section 5 3 4 3 If the LEVEL LED is not lit check the Microwave Module see Section 5 3 5 4 If the LEVEL LED is lit check the 10 dB step attenuator see Section 5 3 3 5 2 3 Incorrect Output Level Symptoms Output power is at a level other than that selected by ...

Page 129: ...6 Check the level control circuit see Section 5 3 7 Maintenance Manual No 120AM00250 Rev C September 1998 5 3 ...

Page 130: ...D is not lit Remove the A16 PC board A18 is still removed and check the LOCK LED again 3 If the LOCK LED is lit Check the Reference PLL see Section 5 3 18 Check the Reference YIG see Section 5 3 4 4 If the LOCK LED is not lit Remove the A15 PC board A18 and A16 are still removed and check the LOCK LED again 5 If the LOCK LED is lit Check the 1 Hz PLL see Section 5 3 14 6 If the LOCK LED is not lit...

Page 131: ...ete circuit failure 5 2 6 IEEE 488 Interface Malfunction Symptoms The unit does not respond appropriately to commands sent via the interface or exhibits a particular malfunction see Section 5 2 only while under remote control Recommendations 1 Check the power supplies see Section 5 3 1 2 Verify that all commands used are appropriate see Chapter 2 of the manual for a complete listing of valid remot...

Page 132: ...ng fan The four 12 V switched supplies listed below are all derived from the 15 V input from the switching power supply module they are dedicated to particular band related amplifiers within the microwave module and are switched off when the instrument is not within the frequency range which requires that amplifier 20 26 5 12 V A11 27 amplifier in the microwave module that is ON in the 20 26 5 GHz...

Page 133: ...up the variac voltage to the normal line voltage d If excessive current draw occurs investigate the A11 PC board or replace it with a spare e Reduce the variac voltage and connect the Switching Power Supply input Slowly bring up the variac voltage to the normal line voltage f If excessive current draw occurs replace the Switching Power Supply 3 If one supply is at an incorrect voltage a Isolate th...

Page 134: ... spares the problem is most likely on the computer bus board the motherboard into which the computer boards are plugged Many computer problems are caused by dirt on the connections between these boards If the computer seems to have become lost it can be reset either by pressing the reset button on the CPU board A4 or by turning the power switch off and on 5 3 3 10 dB Step Attenuator Option 26 The ...

Page 135: ... 0 V 10 Ω 2 4 V 3 W 16 dBm 1 9 8 7 5 GHz 4 0 V 16 Ω 0 7 V 3 Ω 17 dBm The reference YIG relevant to lock problems only The FM pin should have about 0 5 Ω to ground If the coil current is out of range investigate the NPN transistor and the YIG driver circuit A19 which drives its base 5 3 5 Microwave Module The signal path through the RF module includes a voltage controlled attenuator circuit or leve...

Page 136: ...0 8 P1 29 A11 J1 31 15 0 15 0 15 0 P1 33 A17 J1 64 3 0 3 0 3 0 P1 34 A17 J1 68 0 8 0 8 9 6 P1 35 A14 J1 62 12 2 12 2 0 8 P1 36 A14 J1 61 12 2 12 2 0 8 P1 37 A14 J1 66 0 8 0 8 10 8 J4 A10 J1 44 4 0 0 2 0 4 J7 A5 J1 60 5 8 5 8 0 4 J18 A10 J1 48 0 2 0 4 0 2 J17 A5 J1 64 0 4 0 4 6 0 5 3 6 Detector The leveling system requires feedback from the RF path in order to control output power This is provided ...

Page 137: ...es level characterization data unique to the instrument in which it is installed The level control circuit using its output to drive the leveler in the RF module adjusts output power in whichever direction will equalize the reference and variable inputs to the loop amplifier So long as the output is between the extremes of its control range the output is leveled and the indicator on the front pane...

Page 138: ... 7 If possible replace the circuit with a spare 5 3 9 Divide By N This circuit is one half of the frequency divider PC board A17 Corrective Action Verify that the circuit is being programmed with the correct divisor by checking the inputs to the logic level translator ICs at the frequencies listed in Table 5 5 the inputs to these ICs are at TTL levels Bit IC pin Expected Logic Levels 10 000 GHz 10...

Page 139: ...stor on the Main Tune board A107 which controls the coil current is driven at its base by a control voltage from the YIG driver see Section 5 3 5 4 If the driver output seems substantially wrong the cause could be bad control data to the digital analog converter or bad calibration If the driver is properly programmed and calibrated the approximate voltages listed in Table 5 6 should be present YIG...

Page 140: ...ut is being received from the master reference 2 Verify that the 10 12 MHz output is reaching the Ref DC PLL 3 If possible replace the circuit with a spare 5 3 15 IEEE 488 Interface Timer Circuit This circuit is found on the A2 PC board Corrective Action Verify that these data and control lines have continuity to the rear panel connector and to the CPU If possible replace the circuit with a spare ...

Page 141: ...is unlocked and cable loss is variable Frequency Setting IF freq level LO freq level RF freq level 1 GHz 95 MHz 43 dBm 7810 MHz 40 dBm 7905 MHz 78 dBm 5 GHz 95 MHz 43 dBm 4905 MHz 35 dBm 5000 MHz 80 dBm 15 GHz 295 MHz 36 dBm 14705 MHz 53 dBm 15000 MHz 68 dBm 24 GHz 295 MHz 36 dBm 23705 MHz 53 dBm 24000 MHz 68 dBm 5 3 18 Reference PLL This circuit is located on the Ref DC PLL circuit board A16 Corr...

Page 142: ...Model GT 9000 Microwave Synthesizer 5 16 Manual No 120AM00250 Rev C September 1998 ...

Page 143: ...OCEDURES 10 1201221900 1 58900 1201221900 GT9000 S BASIC SOFT COAX ASY 11 30659 REF 58900 30659 WORK INSTRUCTIONS GT9000 130 120AM00250 1 58900 120AM00250 MODEL GT9000 MANUAL GT9000 5 20 MICROWAVE SIGNAL GENERATOR Rev C Item Part Number Qty Cage Mfr s Part Number Description 1 120AA14300 1 58900 120AA14300 ACCESSORIES ASY 2 120BA13900 1 58900 120BA13900 4 CONN MTG PLATE ASY 3 120DA00510 1 58900 12...

Page 144: ...GT9000 150 120AM00250 1 58900 120AM00250 MODEL GT9000 MANUAL GT9000 5 26 MICROWAVE SIGNAL GENERATOR Rev C Item Part Number Qty Cage Mfr s Part Number Description 1 120AA14300 1 58900 120AA14300 ACCESSORIES ASY 2 120BA13900 1 58900 120BA13900 4 CONN MTG PLATE ASY 3 120DA00511 1 58900 120DA00511 5 26 GHZ FREQ ASSY 4 120DA00750 1 58900 120DA00750 GT9000 PCB ASSY SET 5 120DA00952 1 58900 120DA00952 GT...

Page 145: ...00 6 92194 FIT221 3 8 3 8 SHRINK TUBE 42 120AW11050 REF 58900 120AW11050 REAR PANEL W L GT9000 44 120AW00952 REF 58900 120AW00952 CHASSIS W L GT9000 SW P S 45 120AW01002 REF 58900 120AW01002 COMP BUS BD W L GT9000S 102 HBPP 44004 8 26233 NS137CR440R4 4 40 X 1 4 PAN 103 HBPP 44006 1 26233 NS137CR440R6 4 40 X 3 8 PAN 106 HBPP 63206 3 58900 HBPP 63206 6 32 X 3 8 PAN 107 HBPP 63204 11 58900 HBPP 63204...

Page 146: ... 09769 31 221 RFX BNC F PANEL MOUNT J3 JRDF 00001 1 09769 31 221 RFX BNC F PANEL MOUNT J4 JRDF 00001 1 09769 31 221 RFX BNC F PANEL MOUNT J5 HPM0 00375 1 2R182 652 3 8 HOLE PLUG J6 HPM0 00375 1 2R182 652 3 8 HOLE PLUG J7 HPM0 00375 1 2R182 652 3 8 HOLE PLUG J8 JRDF 00001 1 09769 31 221 RFX BNC F PANEL MOUNT 1204206652 GT9000 FRONT PANEL ASY Rev B Item Part Number Qty Cage Mfr s Part Number Descrip...

Page 147: ...1100 CPU PCA A5 120BA09303 1 58900 120BA09303 PULSE DRIVER PCA A6 120BA09401 1 58900 120BA09401 AM FM DRIVER PCA A14 120BA06951 1 58900 120BA06951 100 MHz PLL PCA A15 120BA08800 1 58900 120BA08800 1 HZ PLL PCA A16 120BA07000 1 58900 120BA07000 REF DC PLL PCA A17 120BA07150 1 58900 120BA07150 DIVIDE BY N PCA A18 120BA07250 1 58900 120BA07250 OUTPUT PLL PCA A19 120BA08350 1 58900 120BA08350 YIG DRIV...

Page 148: ... X 3 8 PAN 107 HBFP 63218 4 58900 HBFP 63218 6 32 X 1 1 8 108 HBFP 63220 5 58900 HBFP 63220 6 32 X 1 1 8 FLAT 109 HBFP 63204 4 58900 HBFP 63204 6 32 X 1 4 FLAT 110 HBPP 25605 6 26233 NS137CR256R5 2 56 X 1 4 PAN 111 HBFP 25605 6 26233 NS139CR256R5 2 56 X 5 16 FLAT 112 HNSS 25603 6 58900 HNSS 25603 2 56 HEX NUT R4 RW10 00030 1 91637 PH10 1 3 1 3 OHM 10 WATT WIREWOUND 120DA00500 01 20 GHZ FREQ ASSY R...

Page 149: ...58900 420CA46800 100 MHZ MT ASY 2SAMP GT9 6 420BA48300 1 58900 420BA48300 DC FILT CHASSIS HARN ASY 7 MDS0 00002 1 62331 301E 01 20GHZ SMA DETECTOR 8 30413 1 58900 30413 01 26 5 GHz SUBASSY 9 420DA49403 1 58900 420DA49403 5 26 SEMI FLEX CBL ASY 10 420AW49800 REF 58900 420AW49800 01 2 DOWNC COAX W L 11 004BA34700 1 58900 004BA34700 GT9000 S 01 2 DOWNC ASY 12 004BA34800 1 58900 004BA34800 GT9000 S 5 ...

Page 150: ...DIR DETECTOR MT GT9000 S 4 420CA46800 1 58900 420CA46800 100 MHZ MT ASY 2SAMP GT9 6 420BA48300 1 58900 420BA48300 DC FILT CHASSIS HARN ASY 8 30413 1 58900 30413 01 26 5 GHz SUBASSY 9 420DA49405 1 58900 420DA49405 2 26 SEMI FLEX CBL ASY 14 JRAT 00000 5 58900 JRAT 00000 SMA CAP 15 JRAT 00050 2 96341 2001 6113 00 50 OHM SMA TERMINATION 20 MPFS 01806 1 96341 2082 6142 06 6DB SMA M F PAD 21 MYYT L1826 ...

Page 151: ... 1 58900 120BA07900 DETECTOR BUFFER PCA R1 RW10 00030 1 91637 PH10 1 3 1 3 OHM 10 WATT WIREWOUND R2 RW10 00030 1 91637 PH10 1 3 1 3 OHM 10 WATT WIREWOUND R3 RW10 00030 1 91637 PH10 1 3 1 3 OHM 10 WATT WIREWOUND 420CA46800 100 MHZ MT ASY 2SAMP GT9 Rev E Item Part Number Qty Cage Mfr s Part Number Description 1 420CF41300 1 58900 420CF41300 100 MHZ MODULE MT EXC 2 101BF26001 1 58900 101BF26001 END P...

Page 152: ...CHIP CAPACITOR C12 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C13 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C14 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C15 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C16 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C18 TCC0 00220 1 29990 111SF220K100AP 22PF CHIP CAPACITOR C19 TCC0 00220 1 29990 111SF220K100AP...

Page 153: ... DIODE CR36 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR37 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR38 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR39 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR40 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR41 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR42 TDPB 00040 1 28480 NP 4005 BEAM LEAD PIN DIODE CR43 TDPB 00040 1 28480 NP 40...

Page 154: ...IP RESISTOR R22 TRC1 11000 1 58900 TRC1 11000 1 KOHM CHIP RESISTOR R23 TRC1 11000 1 58900 TRC1 11000 1 KOHM CHIP RESISTOR R24 TRC1 11000 1 58900 TRC1 11000 1 KOHM CHIP RESISTOR R34 TRC0 00500 1 58900 TRC0 00500 50 OHM CHIP RESISTOR R35 TRC0 03000 1 58900 TRC0 03000 300 OHM CHIP RESISTOR R36 TRC0 03000 1 58900 TRC0 03000 300 OHM CHIP RESISTOR R37 TRC0 00500 1 58900 TRC0 00500 50 OHM CHIP RESISTOR R...

Page 155: ...GT9000 S 01 2 DOWNC ASY Rev S Item Part Number Qty Cage Mfr s Part Number Description 0 420AW47900 REF 58900 420AW47900 01 2 DOWNC HARNESS W L 1 005DA34700 1 58900 005DA34700 GT9000 S 01 2 DOWNC ASY 2 420BA47900 1 58900 420BA47900 01 2 DOWNC HARNESS ASY 3 001BF06001 1 58900 001BF06001 MODULE LABEL 004BA34700 4 HLLT 40210 2 79963 505 120 4 4 SOLDER LUG 5 420AW49800 REF 58900 420AW49800 01 2 DOWNC C...

Page 156: ...P 63206 4 58900 HBFP 63206 6 32 X 3 8 FLAT 120DA04550 BOTTOM COVER ASY Rev A Item Part Number Qty Cage Mfr s Part Number Description 1 120CF04550 1 58900 120CF04550 BOTTOM COVER 2 HFFR 63202 2 21604 1S001202 RIGHT FRONT FOOT 3 HFFL 63202 2 21604 1S001201 LEFT FRONT FOOT 4 HFBI 00012 1 21604 MP 40008 4 12 INSIDE MOUNT BAIL 5 HNTU 63206 8 21604 MP40366 6 TINNERMAN NUT 101 HBFP 63210 8 58900 HBFP 632...

Page 157: ...01 UF CERAMIC X7R C20 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R R1 RN55 23320 1 91637 RN55C3322F 33 2 K OHMS 1 MET FILM R2 RN55 12210 1 91637 RN55C2211F 2 21 K OHMS 1 MET FILM R3 RN55 31000 1 91637 RN55C1003F 100 K OHMS 1 MET FILM R4 RN55 14990 1 91637 RN55C4991F 4 99 K OHMS 1 MET FILM R5 RN55 11000 1 91637 RN55C1001F 1 K OHMS 1 MET FILM R6 WJIB 05022 1 53387 923345 05 C 5 INSULATED JUMPER...

Page 158: ...N55C5621B 5 62 K OHMS 1 MET FILM R4 RN55 15620 1 91637 RN55C5621B 5 62 K OHMS 1 MET FILM R5 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R6 WJIB 05022 1 53387 923345 05 C 5 INSULATED JUMPER R7 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R8 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R9 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R10 RN55 14750 1 91637 RN55C4751F ...

Page 159: ...IC X7R C10 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C11 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD U1 UMN0 60256 1 0FB81 SRM20256LC10 MCM60L256 CMOS RAM U2 UMN0 60256 1 0FB81 SRM20256LC10 MCM60L256 CMOS RAM U3 UMN0 60256 1 0FB81 SRM20256LC10 MCM60L256 CMOS RAM U4 UMN0 60256 1 0FB81 SRM20256LC10 MCM60L256 CMOS RAM U5 UMN0 27256 REF 01295 TMS 27C256 15JL AT27C256 PROM ERASABLE U6 U...

Page 160: ...OHMS 1 MET FILM R5 RN55 04750 1 91637 RN55C4750F 475 OHMS 1 MET FILM R6 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R7 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R8 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R9 RN55 14750 1 91637 RN55C4751F 4 75 K OHMS 1 MET FILM R10 RN50 14990 1 91637 RN50C4991F 4 99 K OHMS 1 NET FILM R11 RN50 14990 1 91637 RN50C4991F 4 99 K OHMS 1 NE...

Page 161: ... C322C104M5U5CA C9248 1 UF CERAMIC Z5U C43 CC50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C44 CC50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C46 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C48 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C49 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C50 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C55 CC50 03100 1 54583 RD...

Page 162: ... RM1 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM2 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM3 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RX26 RN55 REF 58900 RN55 COMPONENT SELECTED IN TEST RX50 RN55 REF 58900 RN55 COMPONENT SELECTED IN TEST RX51 RN55 REF 58900 RN55 COMPONENT SELECTED IN TEST RX52 RN55 REF 58900 RN55 COMPONENT SELECTED IN TEST U1 UEN0 10124 1 0...

Page 163: ... 100 PF CERAMIC NPO C34 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C35 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C36 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C37 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C38 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C39 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C40 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C4...

Page 164: ...10124P QUAD TTL TO ECL U6 UEN1 10131 1 04713 MC10H131P MC10H131P DUAL D F F U7 UEN0 10102 1 04713 MC10102P MC10102P QUAD NOR U8 UEN1 10102 1 04713 MC10H102PC MC10H102 QUAD NOR GATES U9 UEN0 10124 1 04713 MC10124P MC10124P QUAD TTL TO ECL U10 UEN1 10136 1 04713 MC10H136L MC10H136P 250MHZ DIV 16 U11 UEN1 10136 1 04713 MC10H136L MC10H136P 250MHZ DIV 16 U12 UEN1 10102 1 04713 MC10H102PC MC10H102 QUAD ...

Page 165: ... 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C37 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C38 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C39 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C40 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C41 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C42 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C43 CC50 03100 1 54583 RD30HX7...

Page 166: ...MET FILM R43 RN50 12000 1 91637 RN50C2001F 2 00 K OHMS 1 MET FILM R44 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R45 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R46 RN50 00511 1 91637 RN50C51R1F 51 1 OHMS 1 METAL FILM R47 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R48 RN50 31000 1 91637 RN50C1003F 100 K OHMS 1 MET FILM R49 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS ...

Page 167: ...PE F F U18 UTN0 02732 1 01295 74HC273N 74HC273 OCTAL D TYPE F F U19 UTN0 02732 1 01295 74HC273N 74HC273 OCTAL D TYPE F F U20 UTN0 02732 1 01295 74HC273N 74HC273 OCTAL D TYPE F F U22 UFN0 00428 1 1ES66 MAX428CPA MAX428CPA DUAL OP AMP U23 ULN0 05053 1 1ES66 DG412DJ IH5053 QUAD ANALOG SWITC U24 UFN0 00746 1 24355 AD746AQ AD746JN DUAL OP AMP U25 UFN0 00428 1 1ES66 MAX428CPA MAX428CPA DUAL OP AMP U26 U...

Page 168: ...HX7R103K 01 UF CERAMIC X7R C38 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C39 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C40 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C41 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C42 CC50 00330 1 31433 C315C330J2G5CA C9248 33 PF CERAMIC NPO C46 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C47 CC50 04100 1 31433 C322...

Page 169: ...16980 1 91637 RN50C6981F 6 98 K OHMS 1 MET FILM R23 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R24 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R25 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R26 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R27 RAPG 15000 1 32997 3296Z 1 502 5K 10 25T 5W TRIM POT R28 RAPG 21000 1 32997 3296Z 1 103 10K 10 25T 5W TRIM POT R29 RAP...

Page 170: ...U9 ULN0 00539 1 24355 AD539JD AD539 LINEAR MULT DIVIDR U10 UFN0 00842 1 24355 AD842JN AD842 80 MHZ OP AMP U13 UFN0 00746 1 24355 AD746AQ AD746JN DUAL OP AMP U14 ULN0 05053 1 1ES66 DG412DJ IH5053 QUAD ANALOG SWITC U15 UFN0 00027 1 58900 UFN0 00027 OP27GN LOW DRIFT OP AMP U16 ULN0 05053 1 1ES66 DG412DJ IH5053 QUAD ANALOG SWITC U17 UFN0 00712 1 24355 AD712JN AD712JN DUAL OP AMP U18 ULN0 05053 1 1ES66...

Page 171: ...330 PF CERAMIC NPO C32 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C33 CC50 01220 1 31433 C315C221K1G5CA 220 PF CERAMIC NPO C34 CE16 R6220 1 55680 USA1C220MCA 22UF 16V RADIAL C35 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C36 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C37 CC50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C38 CC50 03100 1 54583 RD30HX7R103K 01 UF CE...

Page 172: ...37 RN50 16980 1 91637 RN50C6981F 6 98 K OHMS 1 MET FILM R39 RAPD 21000 1 5Y491 89PR10K 10K POT 15T PC MNT R40 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R41 RN50 02000 1 91637 RN50C2000F 200 OHMS 1 METAL FILM R42 RAPD 11000 1 5Y491 89PR1K 1K POT 15T PC MNT R43 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R44 RN50 16980 1 91637 RN50C6981F 6 98 K OHMS 1 MET FILM R45 RN50 02000 1 9...

Page 173: ...C50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C11 CE63 07220 1 55680 TVX1J221MCA 220 UF 63V ELECT C12 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C13 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C14 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C15 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C16 CC50 02470 1 31433 C315C472K1R5CA 4700 PF CERAMIC X7R C17 CE63 07220 1 55680 T...

Page 174: ...ERAMIC X7R C3 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C4 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C5 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C6 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C7 CC50 03470 1 31433 C320C473K5R5CA 047 UF CERAMIC X7R C8 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C9 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C11 CE25 R...

Page 175: ...CERAMIC NPO CX30 CC50 00100 REF 31433 C315C100J2G5CA 10 PF CERAMIC NPO DS1 ILRR 10125 1 28480 HLMP K101 RED LED J2 JRBM 00101 1 09769 903 373J 51A SMB M RTANG PC MOUNT J3 JRBM 00101 1 09769 903 373J 51A SMB M RTANG PC MOUNT J4 JRBM 00101 1 09769 903 373J 51A SMB M RTANG PC MOUNT J5 JRBM 00101 1 09769 903 373J 51A SMB M RTANG PC MOUNT J6 JRBM 00101 1 09769 903 373J 51A SMB M RTANG PC MOUNT J7 JRBM ...

Page 176: ...37 RN55C1500D 150 OHMS 1 MET FILM R54 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R55 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R56 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R57 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R58 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R59 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R60 RN50 05620 1 91637 RN50D5620F 562 OHMS...

Page 177: ...C29 CC50 00680 1 31433 C315C680J2G5CA 68 PF CERAMIC NPO C30 CC50 00047 1 31433 C315C479D2G5CA 9248 4 7 PF CERAMIC NPO C31 CC50 03470 1 31433 C320C473K5R5CA 047 UF CERAMIC X7R C32 CC50 00390 1 31433 C315C390J2G5CA 39 PF CERAMIC NPO C33 CE16 R7470 1 55680 UVX1C471MPA 470 UF 16V RADIAL LEAD C34 CE16 R7470 1 55680 UVX1C471MPA 470 UF 16V RADIAL LEAD C35 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LE...

Page 178: ...0C6981F 6 98 K OHMS 1 MET FILM R5 RN50 24990 1 91637 RN50C4992F 49 9 K OHMS 1 MET FILM R6 RN50 16980 1 91637 RN50C6981F 6 98 K OHMS 1 MET FILM R7 RN50 24990 1 91637 RN50C4992F 49 9 K OHMS 1 MET FILM R8 RN50 16980 1 91637 RN50C6981F 6 98 K OHMS 1 MET FILM R9 RN50 26980 1 91637 RN50C6982F 69 8 K OHMS 1 MET FILM R10 RN50 26980 1 91637 RN50C6982F 69 8 K OHMS 1 MET FILM R11 RN50 22000 1 91637 RN50C2002...

Page 179: ...M R67 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R68 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R69 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R70 RN50 00825 1 91637 RN50C82R5F 82 5 OHMS 1 METAL FILM R71 RN50 00825 1 91637 RN50C82R5F 82 5 OHMS 1 METAL FILM RX52 RN50 REF 58900 RN50 COMPONENT SELECTED IN TEST RX53 RN50 REF 58900 RN50 COMPONENT SELECTED IN TEST TP1 ET...

Page 180: ...36 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C37 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C38 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C39 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C41 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C42 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C45 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C46 CC50 03100 1 54583 ...

Page 181: ...N55C1001F 1 K OHMS 1 MET FILM R43 RN55 11000 1 91637 RN55C1001F 1 K OHMS 1 MET FILM R44 RN55 03010 1 91637 RN55C3010F 301 OHMS 1 MET FILM R45 RN55 03010 1 91637 RN55C3010F 301 OHMS 1 MET FILM R46 RN55 01000 1 91637 RN55C1000F 100 OHMS 1 MET FILM R52 RN55 01000 1 91637 RN55C1000F 100 OHMS 1 MET FILM R55 RN55 21780 1 91637 RN55C1782F 17 8 K OHMS 1 MET FILM R56 RN55 21780 1 91637 RN55C1782F 17 8 K OH...

Page 182: ...N0 00072 1 01295 TL072CP TL072CP DUAL FET OP AMP U15 ULN0 00311 1 01295 LM311P LM311N COMPARATOR U16 ULN0 00311 1 01295 LM311P LM311N COMPARATOR U17 UTN0 01542 1 01295 74HC154NT SN74HC154NT 4 TO 16 MUX U18 UON0 05532 1 58900 UON0 05532 NE5532 DUAL OP AMP U19 UON0 05532 1 58900 UON0 05532 NE5532 DUAL OP AMP U20 UON0 05532 1 58900 UON0 05532 NE5532 DUAL OP AMP U21 UON0 05532 1 58900 UON0 05532 NE553...

Page 183: ... 54583 CC0805HNP0150150JT 15 PF NPO CHIP C26 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C27 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C28 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C29 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C30 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C32 CK50 03100 1 31433 C0805C103K5RAC 01 UF X7R CHIP C34 CC50 03100 1 54583 RD30HX7R103K 01 UF...

Page 184: ...0 OHMS 1 MET FILM R41 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R42 RN50 00562 1 65940 CRB20FX5622B 56 2 OHMS 1 METAL FILM RM1 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM2 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM3 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM4 RM7S 05600 1 71450 750 81 R560 560 OHM X 7 SIP NETWRK RM5 RM7S 05600 1 71450 750 81 R560 56...

Page 185: ...CERAMIC X7R C50 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C51 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C52 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C53 CE25 R6470 1 61058 ECEA1EU470 47 UF 25V RADIAL LEAD C54 CC50 01220 1 31433 C315C221K1G5CA 220 PF CERAMIC NPO C55 CC50 00100 1 31433 C315C100J2G5CA 10 PF CERAMIC NPO C56 CC50 01220 1 31433 C315C221K1G5CA 220 PF CERAMI...

Page 186: ...N50C4993F 499 K OHMS 1 MET FILM R18 RN50 23740 1 91637 RN50C3742F 37 4 K OHMS 1 MET FILM R19 RN50 16810 1 91637 RN50C6811F 6 81 K OHMS 1 MET FILM R20 RN50 23740 1 91637 RN50C3742F 37 4 K OHMS 1 MET FILM R21 RN50 13920 1 91637 RN50C3921F 3 92 K OHMS 1 MET FILM R23 RN50 16810 1 91637 RN50C6811F 6 81 K OHMS 1 MET FILM R24 RN50 34990 1 91637 RN50C4993F 499 K OHMS 1 MET FILM R25 RN50 23740 1 91637 RN50...

Page 187: ...M R84 RN50 13320 1 91637 RN50C3321F 3 32 K OHMS 1 MET FILM R85 RN50 00511 1 91637 RN50C51R1F 51 1 OHMS 1 METAL FILM R86 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM RX22 RN50 REF 58900 RN50 COMPONENT SELECTED IN TEST RX81 RN50 REF 58900 RN50 COMPONENT SELECTED IN TEST RX92 RN50 REF 58900 RN50 COMPONENT SELECTED IN TEST U1 UEN0 10216 1 04713 MC10216PC MC10216P TRIPLE RCVR U2 UEN0 12040 1 04...

Page 188: ...MIC X7R C36 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C37 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C38 CC50 03220 1 31433 C315C223K5R5CA 022 UF CERAMIC X7R C39 CT25 R6100 1 31433 T356E106K025AS 10 UF 25V RADIAL LEAD C40 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C41 CC50 04100 1 31433 C322C104M5U5CA C9248 1 UF CERAMIC Z5U C42 CC50 00330 1 31433 C315C330J2G5CA C9248 3...

Page 189: ... 0 K OHMS 1 MET FILM R66 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R67 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R68 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R72 RN50 02000 1 91637 RN50C2000F 200 OHMS 1 METAL FILM R73 RN50 02000 1 91637 RN50C2000F 200 OHMS 1 METAL FILM R74 RN50 02000 1 91637 RN50C2000F 200 OHMS 1 METAL FILM R75 RN50 02000 1 91637 RN50C2000F 200 OH...

Page 190: ...C Z5U P1 JIA1 05295 1 27264 22 11 2052 5 PIN LOCKING STRIP PLUG P2 JIR1 10260 1 27264 22 12 2104 10 PIN LOCKING STRIP PLG P5 JIA2 26460 1 52072 CA D26 23B 46 26 PIN STRIPLINE PLUG P9 JIR1 20034 1 58900 JIR1 20034 34 PIN STRPLN PLG RT ANG P11 JIR1 20034 1 58900 JIR1 20034 34 PIN STRPLN PLG RT ANG P34 JIA2 34460 1 52072 CA D34 23B 46 34 PIN STRIPLINE PLUG P60 JIR1 20060 1 58900 JIR1 20060 60 PIN STR...

Page 191: ...2072 CA D50 23B 46 50 PIN STRIPLINE PLUG 5 JIA2 26460 1 52072 CA D26 23B 46 26 PIN STRIPLINE PLUG 6 JSP0 10014 1 09769 2 641609 1 14 PIN DIP SOCKET 7 ETSB 06216 130 58900 ETSB 06216 BIFURCATED TERMINAL 8 WSB0 26000 2 16428 8023 26 GA BUS WIRE L 1 LAD0 06330 1 91637 IMS 5 33UH 10 33 UH INDUCTOR L 2 LAD0 06330 1 91637 IMS 5 33UH 10 33 UH INDUCTOR L 3 LAD0 06330 1 91637 IMS 5 33UH 10 33 UH INDUCTOR L...

Page 192: ...1 58900 120CF01500 DATA ENTRY PCB 2 SPPL K0112 7 04426 80 390112 25 LT GRY KEYCAP W O LT 5 SPPL K9027 3 58900 SPPL K9027 RECTANGULAR KEYCAP 6 120BF05900 2 58900 120BF05900 ARROW KEY CAP 7 120BF05700 1 58900 120BF05700 SHIFT KEY CAP 8 120BF06000 1 58900 120BF06000 KEY PAD 0 9 120BF06001 1 58900 120BF06001 KEY PAD 1 10 120BF06002 1 58900 120BF06002 KEY PAD 2 11 120BF06003 1 58900 120BF06003 KEY PAD ...

Page 193: ...SW ASY S 28 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 29 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 30 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 31 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 32 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 33 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 34 120BA06701 1 58900 120BA06701 PUSHBUTTON SW ASY S 35 120BA06701 1 5890...

Page 194: ...C X7R CX 17 CC50 REF 58900 CC50 COMPONENT SELECTED IN TEST J 1 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 2 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 3 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 4 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 5 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 6 JRBM 00000 1 58900 JRBM 00000 SMB M BULK MOUNT J 7 JRBM 00000 1 58900 JRBM 00000 S...

Page 195: ...295 UA7952CKC MC7905 2CT 1A 5 2V REG 13 WSIB 245XX 4 58900 WSIB 245XX 24 GA PVC COLOR 5 14 HQWN 02200 1 04713 B51547F019 TO220 SHOULDER WASHER 15 HQIS 01260 1 55285 7403 09FR 51 TO126 INSULATOR 16 ETI0 07555 2 58900 ETI0 07555 FEED THRU TERMINAL 23 RN55 01300 1 91637 RN55C1300F 130 OHMS 1 MET FILM 24 RN55 00825 1 91637 RN55C82R5F 82 5 OHMS 1 MET FILM 25 101CA04203 1 58900 101CA04203 100 MHz MODULE...

Page 196: ...PF VARIABLE C 34 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C 35 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C 36 CT20 06100 1 31433 T110B106K020AS 10 UF 20V TANTALUM C 37 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C 38 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C 39 CC50 00680 1 31433 C315C680J2G5CA 68 PF CERAMIC NPO C 40 CC50 02100 1 04222 SR155C122MAT 001 UF CERAM...

Page 197: ...32 OHMS 1 MET FILM R 22 RN55 03320 1 91637 RN55C3320F 332 OHMS 1 MET FILM R 23 RN55 11300 1 91637 RN55C1301F 1 3 K OHMS 1 MET FILM R 24 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R 25 RN55 01500 1 91637 RN55C1500D 150 OHMS 1 MET FILM R 26 RN55 01000 1 91637 RN55C1000F 100 OHMS 1 MET FILM R 27 RN55 01000 1 91637 RN55C1000F 100 OHMS 1 MET FILM R 28 RN55 03320 1 91637 RN55C3320F 332 OHMS 1 MET...

Page 198: ...Model GT 9000 Microwave Synthesizer 6 56 Manual No 120AM00250 Rev C September 1998 ...

Page 199: ...veline Inc 160 Passaic Ave West Caldwell NJ 07006 00656 Aerovox Inc 740 Belleville Ave New Bedford MA 02745 00750 Air Track Mfg Corp College Park MD 00809 Croven Crystals 500 Beech St Whitby Ontario CAN L1N5S5 00815 Midland Ross 357 Beloit St Burlington WI 53105 01121 Allen Bradley Co 1201 South 2nd St Milwaukee WI 53204 01295 Texas Instruments Inc 13500 N Central Expwy Dallas TX 75265 01963 Cherr...

Page 200: ...awtucket RI 02861 14936 General Instrument Corp Power Semiconductor Div 600 West John St Hicksville NY 11802 15268 RHG Electronics Laboratory Inc 161 East Industry Ct Deer Park NY 11729 15450 Erie Specialty Products Inc 645 W 11th Street Erie PA 16512 15542 Mini Circuits Laboratory 2625 East 14th St Brooklyn NY 11235 15915 Tepro of Florida Inc 2608 Enterprise Rd Clearwater FL 33517 16179 M A Com O...

Page 201: ...757 Micrpac Industries Inc 905 E Walnut St Garland TX 75040 31781 Edac Inc 40 Tiffield Rd Scarborough Ont CAN M1V 5B6 31918 ITT Schadow Inc 8081 Wallace Rd Eden Prarie MN 55344 32293 Intersil Inc 2450 Walsh Ave Santa Clara CA 95051 32559 Bivar Inc 4 Thomas St Irvine CA 92718 32767 Griffith Plastics Corp 1027 California Dr Burlingame CA 94010 32997 Bourns Inc Trimpot Division 1200 Columbia Ave Rive...

Page 202: ... CA 95037 58361 General Instrument Corp Optoelectronics Div 3400 Hillview Ave Palo Alto CA 94304 58377 National Electronics 11731 Markon Dr Garden Grove CA 92641 58684 Magnetec Corp 61 W Dudleytown Rd Bloomfield CT 06002 58756 CTS Corp Electromechanical Div 1142 W Beardsley Ave Elkhart IN 46514 58758 Zambre Co Inc 2134M Old Middlefield Way Mountain View CA 94043 2404 58900 Giga tronics Inc 4650 No...

Page 203: ...a IL 60134 71034 Bliley Electric Co 2545 W Grandview Blvd Erie PA 16508 71218 Bud Industries 4605 E 355th St Willoughby OH 44094 71450 CTS Corp 1201 Cumberland Ave West Lafayette IN 47906 71468 ITT Corp ITT Cannon Div 666 E Dyer Rd Santa Ana CA 92702 71785 Labinal Components and Systems Inc 1521 Morse Ave Elk Grove Village IL 60007 72259 Nytronics Inc 475 Park Ave South New York NY 10016 72982 Mur...

Page 204: ...e Road Tuckahoe NY 10707 3420 92194 Alpha Wire Corp 711 Lidgerwood Ave Elizabeth NJ 07207 93459 Weinschel Engineering Co 1 Weinschel Lane Gaithersburg MD 20877 94696 Magnecraft 1910 Techny Rd Northbrook IL 60062 95054 Sermax Corp Milwaukee WI 95077 Solitron Devices Inc Solitron Microwave Div 1177 Blue Heron Blvd Bldg 2 Riviera Beach FL 33404 95146 Alco Electronics Products Inc 1551 Osgood St North...

Page 205: ...tion Assembly drawings and circuit schematics for the Model GT 9000 Microwave Synthesizer assemblies are in this chapter Parts lists for all assemblies are contained in Chapter 6 Manual No 120AM00250 Rev C September 1998 7 1 ...

Page 206: ...Model GT 9000 Microwave Synthesizers 7 2 Manual No 120AM00250 Rev C September 1998 ...

Page 207: ...ut Slides Yes Accessory A006 Extender Board Service Kit NA Accessory A011 Instrument Carrying Case NA Option 16 1 Hz Resolution No Option 20 High Power RF Output No Option 22 Rear Panel RF Output Connector No Option 23 Type N RF Output Connector Yes Option 24 Internal Modulation AM and FM Modes No Option 25 Planar Crown RF Output Connector Yes Option 26 10 dB Step Attenuator No Option 27 Scan Modu...

Page 208: ...701 2 58900 120BF12701 RACK MOUNT FLANGE 7 HRSA 20001 1 05236 1201723 L 20 RACK SLIDE 8 HRSA 20002 1 05236 1201723 R 20 RACK SLIDE 10 420CF16200 2 58900 420CF16200 SLIDE MTG SPACER M7XXX3 11 420BF16300 2 58900 420BF16300 FRONT SLIDE MTG BKT 12 420CF16400 2 58900 420CF16400 REAR SLIDE MTG BKT 102 HBFP 83210 4 26233 NS139CR832R10 8 32 X 5 8 FLAT 104 HBPP A3206 6 58900 HBPP A3206 10 32 X 3 8 PAN 105 ...

Page 209: ...part number to order additional copies of the instrument s Operation and Maintenance manual A 7 Accessory A011 Instrument Carrying Case P N 29855 This is a special ruggedized carrying case for transporting the instrument between work sites It can be ordered from Giga tronics with part number 29855 A 8 Option 16 1 Hz Resolution If Option 16 is installed the frequency resolution of the instrument is...

Page 210: ...r module is switched into the RF output path when this option is activated The amplifier module contains separate amplifiers for frequencies above and below 2 GHz A 9 2 Activating Deactivating Option 20 From the front panel Option 20 is controlled by selecting Special Function 29 and pressing ON or OFF to activate or deactivate the option During remote control operation Option 20 is activated by t...

Page 211: ...n the option is deactivated If the instrument s RF output power is turned off while the option is selected a flashing decimal in the power display window warns that the instrument will be in high power mode when RF is turned back on In maximum power mode with the option selected the power window displays with the decimal point blinking If the instrument is turned off while the high power option is...

Page 212: ... FLEX COAX 112 HWFS 40500 2 58900 HWFS 40500 4 X 5 16 FLAT WASHER 113 HBPP 44008 4 58900 HBPP 44008 4 40 X 1 2 PAN 114 HBPP 25605 1 26233 NS137CR256R5 2 56 X 1 4 PAN 115 HBPP 44007 4 26233 NS137CR440R7 4 40 X 7 16 PAN CR1 DSA0 04148 1 58900 DSA0 04148 1N4148 G P DIODE 29860 OPT 20B HIGH POWER RF OUTPUT Rev A Item Part Number Qty Cage Mfr s Part Number Description 0 002CI05900 REF 58900 002CI05900 ...

Page 213: ... SMA CONNECTOR MOUNT SPAC 29859 OPT 22B R P RF W O OPT 26 Rev A Item Part Number Qty Cage Mfr s Part Number Description 1 120CA15314 1 58900 120CA15314 141 CABLE 14 ASY 2 JRAB 00200 1 96341 2784 5002 00 SMA F BULK MT CONN 3 HPM0 00375 1 2R182 652 3 8 HOLE PLUG 4 107BF01700 1 58900 107BF01700 SMA CONNECTOR MOUNT FLAN 5 107BF01701 1 58900 107BF01701 SMA CONNECTOR MOUNT SPAC A 11 Option 23 Type N RF ...

Page 214: ... 54583 RD30HX7R103K 01 UF CERAMIC X7R C13 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C14 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C15 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C16 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C17 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C18 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C19 CC50 03100 1 54583 RD30HX7R103K 01...

Page 215: ...55C5620F 562 OHMS 1 MET FILM R22 RN55 02210 1 91637 RN55C2210F 221 OHMS 1 MET FILM R23 RN55 02210 1 91637 RN55C2210F 221 OHMS 1 MET FILM R24 RN55 02740 1 91637 RN55C2740F 274 OHMS 1 MET FILM R25 RN55 00511 1 91637 RN55C51R1F 51 1 OHMS 1 MET FILM R26 RN50 12000 1 91637 RN50C2001F 2 00 K OHMS 1 MET FILM R27 RN50 11000 1 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM R28 RN55 00511 1 91637 RN55C51R1F 51 1 ...

Page 216: ...to 18 GHz JRWC 00050 7005A 5 Type GPC 7 Crown DC to 18 GHz JRWC 00080 7005A 8 Type TNC Female Crown DC to 18 GHz JRWC 00090 7005A 09 Type TNC Male Crown DC to 18 GHz JRWC 00010 7005A 1 Type SMA Female Crown DC to 26 5 GHz JRWC 00020 7005A 2 Type SMA Male Crown DC to 26 5 GHz JRWC 00060 7005A 6 3 5 mm Female Crown DC to 34 GHz JRWC 00070 7005A 7 3 5 mm Male Crown DC to 34 GHz JRWC 00100 7005A 10 2 ...

Page 217: ... LOCK 103 HBPP 63204 2 58900 HBPP 63204 6 32 X 1 4 PAN 104 HWSS 60400 2 58900 HWSS 60400 6 X 1 4 SPLIT LOCK 105 WCAS 18011 1 58900 WCAS 18011 11 18 GHZ SEMI FLEX COAX 106 WCAS 26103 1 58900 WCAS 26103 3 26 GHz SEMI FLEX COAX 107 WCAS 26106 1 58900 WCAS 26106 6 26 GHz SEMI FLEX COAX 29856 OPT 26 26 GHZ STEP ATTENUATOR Rev A Item Part Number Qty Cage Mfr s Part Number Description 1 MP90 02603 1 2848...

Page 218: ...by as much as 14 dB when activated in linear AM mode Also standard amplitude modulation the specifications for which are given in Chapter 1 of this manual is not available in instruments with Option 27 All attenuation specifications are relative to the instrument s unmodulated output level with the attenuator set to 0 dB Specifications General Frequency Of Operation 100 MHz to 20 GHz RF Carrier Ha...

Page 219: ...six additional modes SCAN SIN scan modulation internal sine wave SCAN SQR scan modulation internal square wave SCAN TRI scan modulation internal triangle LIN AM SIN linear AM internal sine wave LIN AM SQR linear AM internal square wave LIN AM TRI linear AM internal triangle Having reached the desired mode you can set parameters under that mode Press the SCROLL button if necessary until the desired...

Page 220: ...dress is furnished to the input of a digital to analog converter The DAC converts this correction data to an analog signal which drives the scan module As the input waveform changes different storage areas in the RAM are addressed so that the correction factors retrieved from memory constantly track the input The correction data is tailored to the individual scan module installed in the instrument...

Page 221: ... span to 0 Hz Apply a 0 to 4 V sine wave at 100 Hz to the AM input BNC Verify a 0 to 40 dB 2 dB sine wave on the analyzer Change the input sine wave to 0 to 2 V verify a 0 to 20 dB 2 dB sine wave on the analyzer Change the input sine wave to a triangle wave and square wave verify clean waveforms on the analyzer screen from 0 to 20 dB 2 dB Change the input square wave to 0 to 6 V verify a clean 0 t...

Page 222: ...g of 15 to 25 Re check at 80 depth verify a modulation reading of 75 to 85 6 Select LIN AM SQR ON 50 depth Turn off all filters on HP 8902A Verify an AM reading of 45 to 55 on the HP 8902A 7 Select LIN AM TRI ON 50 depth Turn on 50 Hz and 15 kHz filters on HP 8902A Verify an AM reading of 45 to 55 on the HP 8902A 8 Connect a detector to Model GT 9000 RF out Connect the detector output to the oscil...

Page 223: ...15 kHz filers AM mode Set the GT 9000 RF output to 5 GHz 10 Using a BNC T connector and oscilloscope apply a 1 0 Vpp 1 kHz sine wave to the AM input BNC on the Model GT 9000 front panel 11 Adjust the Sense pot R4 for a 50 0 reading on the HP 8902A 12 Measure the distortion at 1 kHz 13 Check the distortion at the RF output frequencies shown in Table A 2 RF Frequency Distortion at 50 1 GHz 10 typica...

Page 224: ...Chapter 7 29822 OPT 27 60 dB SCAN W O OPT 26 Rev A Item Part Number Qty Cage Mfr s Part Number Description 1 004BA34300 1 58900 004BA34300 01 20 GHZ SCAN 2 420CF41700 1 58900 420CF41700 CTR SCAN MOUNT GT9000 S 3 MRTL 22020 1 58900 MRTL 22020 COAX TRANS SWITCH 4 003AW02700 REF 58900 003AW02700 OPT 27 SCAN MOD W L 5 WCAS 26004 1 58900 WCAS 26004 4 26 GHz SEMI FLEX COAX 6 WCAS 26005 1 58900 WCAS 2600...

Page 225: ...8 CC50 02100 1 04222 SR155C122MAT 001 UF CERAMIC Y5P C10 CC50 01150 1 31433 C315C151G5CA 9248 150 PF CERAMIC NPO C11 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C12 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C13 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C14 CC50 01220 1 31433 C315C221K1G5CA 220 PF CERAMIC NPO C15 CC50 03100 1 54583 RD30HX7R103K 01 UF CERAMIC X7R C16 CC50 04100...

Page 226: ...RN50 31000 1 91637 RN50C1003F 100 K OHMS 1 MET FILM R2 RN50 21500 1 91637 RN50C1502F 15 0 K OHMS 1 MET FILM R3 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R4 RAPG 25000 1 32997 3296Z 503 50K 10 25T POT R5 RN55 31870 1 91637 RN55C1873F 187 K OHMS 1 MET FILM R6 RN50 21000 1 91637 RN50C1002F 10 0 K OHMS 1 MET FILM R7 RN50 41000 1 91637 RN50C1004F 1 00 M OHMS 1 MET FILM R8 RN50 23320 1 91637 ...

Page 227: ...1000 REF 91637 RNC50H1001F 1 00 K OHMS 1 MET FILM U1 UOG0 00111 1 13919 OPA 111AM OPA111BM JFET OPAMP U2 UON0 00746 1 24355 AD746AQ AD746JN DUAL OP AMP U3 ULN0 05053 1 1ES66 DG412DJ IH5053 QUAD ANALOG SWITC U4 UAN0 08048 1 2M881 ICL8048BCJE ICL8048 LOG AMPLIFIER U5 UON0 00844 1 24355 AD844AN AD844AN OP AMP U6 UVNP 00100 1 24355 AD587JK AD587 10V 20PPM REF U7 UIN0 75453 1 01295 SN75453BP SN75453BP ...

Page 228: ... HI STAB OSC PCA 5X10 10 2 101BA39101 1 58900 101BA39101 HI STAB OSC PCA 101BA39103 HI STAB OSC PCA 5X10 10 A21 Rev A Item Part Number Qty Cage Mfr s Part Number Description 0 101BS39103 REF 58900 101BS39103 HI STAB OSC 5X10 10 SCH 1 101BF39101 1 58900 101BF39101 HI STAB OSC PCB C1 CC50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C2 CC50 05100 1 04222 SR305E105MAA 1 UF CERAMIC Z5U C3 CC50 03100 1 ...

Page 229: ...4 40 X 5 16 FLAT 109 HBPP 63209 1 58900 HBPP 63209 6 32 X 9 16 PAN A208A1 30708 1 58900 30708 OPT 30 SW PWR SPLY PCA A208A2 30712 1 58900 30712 OPT 30 SW PWR SPLY PCA A208A3 30717 1 58900 30717 OPT 30 SW PWR SPLY PCA C2 CE00 R7560 1 55680 LLQ2G561MHSC 560 UF 400 V ELECTROLYTC C3 CE00 R7560 1 55680 LLQ2G561MHSC 560 UF 400 V ELECTROLYTC 30708 OPT 30 SW PWR SPLY PCA Rev B Item Part Number Qty Cage Mf...

Page 230: ...5 DPAC 04006 1 18041 IN4006 1N4006 1A 800V DIODE CR6 DPAC 04006 1 18041 IN4006 1N4006 1A 800V DIODE CX11 CC50 REF 58900 CC50 COMPONENT SELECTED IN TEST CX14 CC50 REF 58900 CC50 COMPONENT SELECTED IN TEST F1 FFCC 00250 1 58900 FFCC 00250 2 5A PC TRON FUSE F2 FFCC 00250 1 58900 FFCC 00250 2 5A PC TRON FUSE P1 WSB0 20000 1 58900 WSB0 20000 20 GA BUS WIRE P3 WSB0 20000 1 58900 WSB0 20000 20 GA BUS WIR...

Page 231: ...00V DIODE CR5 DPAC 04006 1 18041 IN4006 1N4006 1A 800V DIODE CR6 DPAC 04006 1 18041 IN4006 1N4006 1A 800V DIODE CX11 CC50 REF 58900 CC50 COMPONENT SELECTED IN TEST CX14 CC50 REF 58900 CC50 COMPONENT SELECTED IN TEST F1 FFCC 00250 1 58900 FFCC 00250 2 5A PC TRON FUSE F2 FFCC 00250 1 58900 FFCC 00250 2 5A PC TRON FUSE P2 WSB0 20000 1 58900 WSB0 20000 20 GA BUS WIRE P4 WSB0 20000 1 58900 WSB0 20000 2...

Page 232: ...Model GT 9000 Microwave Synthesizer A 26 Manual No 120AM00250 Rev C September 1998 ...

Page 233: ...30 Front panel interface PC A1 3 18 Function generator PC A6A1 3 22 IEEE Timer PC A2 3 18 level driver PC A10A1 3 24 Level PC A10 3 23 Main tune PC A107 3 34 Memory PC A3 3 19 Numeric keypad 2 3 Output PLL PC A18 3 32 Power supply PC A11 3 25 Pulse driver PC A5 3 20 Pulse generator PC A5A1 3 21 Pushbutton PC A105 3 33 Reference downconverter PLL PC A16 3 28 Scan modulation PC A7 3 22 YIG driver PC...

Page 234: ...ield 2 3 Frequency modulation 2 13 3 17 Pulse modulation 3 17 RF Level 2 10 Shifted functions 2 5 Front panel inputs outputs 1 11 Front panel interface PC A1 3 18 Function generator PC A6A1 3 22 G General circuit theory 3 1 General failure 5 2 General Information 1 1 Cleaning 1 2 Cooling 1 2 Installation and preparation for use 1 2 Introduction 1 1 Items furnished 1 2 Items required 1 2 Preparatio...

Page 235: ...equency unlocked 5 4 Output locked but frequency incorrect 5 5 Output Loop 3 6 Output PLL PC A18 3 32 P Parts Lists 6 1 List of Manufacturers 6 57 Performance Specifications 1 6 AM indicator 1 10 Amplitude modulation 1 10 External automatic level control 1 11 External PM envelope 1 8 Externally generated PM envelope 1 8 Externally supplied AM envelope 1 11 Externally supplied FM envelope 1 10 FM e...

Page 236: ...e downconverter PLL PC A16 3 28 Downconverter PLL 3 28 Reference PLL 3 28 Reset key 2 5 RF Level 2 10 RF output power 1 7 RF output power tests 4 17 RF Path 3 3 S Safety Precautions 1 4 Voltage and fuse selection 1 5 Sampler drive 3 35 Sampler drivers 100 MHz VCO 4 3 Sampler IF amplifier 3 35 Scan modulation PC A7 3 22 Shifted functions 2 5 Adrs key 2 6 ALC key 2 7 Atten key 2 6 Local key 2 6 Mult...

Page 237: ...5 13 YIG oscillator 5 9 Troubleshooting Procedures Defining the area of malfunction 5 2 General failure 5 2 IEEE 488 interface malfunction 5 5 Incorrect output level 5 2 Loss of RF output 5 2 Output frequency unlocked 5 4 Output locked but frequency incorrect 5 5 Troubleshooting Notes 5 6 U Up down keys 2 4 V Voltage and fuse selection 1 5 W Wide mode FM envelope parameters FM envelope parameters ...

Page 238: ...Model GT 9000 Microwave Synthesizer Index 6 Manual No 120AM00250 Rev C September 1998 ...

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