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Agilent Technologies 35670-90066 manual To adjust the display voltage

Models: 35670-90066

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Troubleshooting Specification Install Error codes A1 Input Block Diagram Channel Voltages and Signals Probably faulty Safety Symbols Preset Supplied Accessories

Page 270

Adjusting the Analyzer

Agilent 35670A

To adjust the display voltage

5-22

Page 269 Page 271

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Agilent Technologies 35670-90066 manual To adjust the display voltage

Page 269 Page 271

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Contents

Agilent 35670A Service Guide Agilent 35670A at a Glance Front Panel Agilent 35670A Front Panel Agilent 35670A at a Glance Rear Panel Agilent 35670A Rear Panel Plot/Print menus Saftey Summary Do not Operate in AN Explosive Atmosphere Safety Symbols Supplied Accessories Available Accessories This Book Table of Contents Preparing the Analyzer for Use Page Troubleshooting the Analyzer Adjusting the Analyzer Replaceable Parts Circuit Descriptions Voltages and Signals Specifications Specifications Abbreviations Channel mode option AY6 only Frequency Single Channel Amplitude Average, 0 to −80 dBfs FFT Dynamic Range Single Channel Phase Input NoiseWindow Parameters Cross Channel Phase Cross Channel Amplitude Input Time Domain Trigger Tachometer Source Output Digital Interfaces Gpib General Specifications Cispr Order Tracking Option 1D0 Max Order⋅ Max RPM Swept Sine Measurements -Option 1D2 Arbitrary Waveform Source-Option 1D4 Real Time Octave Analysis Option 1D1 = 1, 3 or Recommended Test Equipment Suggested Assembly for Series Resistor Schematic and Parts List for Notch Filter TTL Preparing the Analyzer for Use Line voltage DC Power RequirementsAC Power Requirements Operating Typical Current Voltage Standard 2 channel DC Power Cable and Grounding Requirements AC Power Cable and Grounding Requirements Subject the operator to lethal voltages Preparing the Analyzer for Use To do the incoming inspection Set the analyzer’s power switch to on To install the analyzer Other excessive moisture To connect the analyzer to a dc power source Connect the dc power cable to the dc power source Adapter, be careful of the heat from the adapter’s tip Turn on the dc power sourceSet the analyzer’s power switch to on l At the end of this chapter To change the fuses DC FuseAC Fuse To connect the analyzer to a serial device To connect the analyzer to a parallel devicePart Number Cable Description To connect the analyzer to an Gpib device Reference Pin Number Signal Name To connect the analyzer to an external monitor Set the power switch to off O To connect the optional keyboard Connect the other end of the keyboard cable to the keyboard To connect the microphone adapter Standard 2 channel Agilent 35670A Optional 4 channel To clean the screen To store the analyzer To transport the analyzer If the analyzer will not power up Agilent 35670A Verifying Specifications Verifying Specifications Overview Calibration Cycle Features of the ProgramTest Duration Recommended Test Equipment Measurement Uncertainty Operation Verification and Performance TestsProgram Controlled Test Equipment Test Equipment Program Controlled Model Operation Verification Tests Performance Tests Specifications and Performance Tests Specification Performance Test Now go to one of the following procedures to continue To load the programLocal/GPIB To run the program in semiautomated mode Press the following keys to start the test Follow the directions on the displayVoltages that could result in injury to personnel To run the program without a printer Press the following keys Agilent 35670A To run the program in manual mode To set up the self test To set up the dc offset test To set up the noise test To set up the spurious signals test To set up the amplitude accuracy test To set up the flatness test To set up the amplitude linearity test To set up the A-weight filter test To set up the channel match test To set up the frequency accuracy test To set up the anti-alias filter test To set up the input coupling test To set up the harmonic distortion test 2A 2 ch Using a synthesizer and notch filter To set up the intermodulation distortion test 2 ch To set up the cross talk test Verifying Specifications Verifying Specifications Agilent 35670A To set up the single channel phase accuracy test To set up the external trigger test 1A 2 ch To set up the tach function test To set up the tach function test To set up the input resistance test To set up the input resistance test To set up the ICP supply test To set up the ICP supply test Agilent 35670A Verifying Specifications To set up the source amplitude accuracy test To set up the source output resistance test To set up the source output resistance test To set up the source dc offset test To set up the source flatness test To set up the source distortion test ITM35670A Main Menu Descriptions Start Testing Menu Descriptions Press Start Testing to display the following softkeys Test Configuration Menu Descriptions Equipment Configuration Menu Descriptions Title Page Menu Descriptions Prompts you to enter the analyzer’s report number Measurement Uncertainty ±0.0020 dB 101 ±0.0026 dB ±0.0046 dB ±0.0096 dB ±0.0255 dB Using Other Test Equipment Performance Test Record Two Channel Test Instruments Used Self Test DC OffsetNoise Spurious Signals Performance Test Record Two Channel Agilent 35670A Verifying Specifications Amplitude Accuracy Flatness Amplitude Linearity −11 dBVrms, 99.84 kHz, One Ch, Ch Weight Filter Channel Match Frequency Accuracy Anti-Alias FilterInput Coupling Harmonic Distortion Intermodulation Distortion Cross Talk Single Ch Phase Accuracy External TriggerTach Function option D01 only Source Amplitude Accuracy Input ResistanceICP Supply Source Output Resistance Source DC Offset Source FlatnessSource Distortion Performance Test Record Four Channel Four Ch, 6.4 kHz Span, Ch Four Ch, 0 Hz Start, Ch Performance Test Record Four Channel Agilent 35670A Verifying Specifications Spurious Signals Amplitude Accuracy Serial NumberReport Number Test Date −11 dBVrms, 25.6 kHz, Four Ch, Ch Amplitude Linearity Ch 3, 100 Hz Two Ch, 2/1, − 13 dBV FS Mag Performance Test Record Four Channel One Ch, Ch 1, 51.2 kHz Four Ch, 12.25 kHz 2nd, Ch Two Ch, F1−2F2, 1048 Hz, Ch Receiver Ch 1, Driver Ch 2, 3 Ch 31 Open Circuit Voltage Ch 3 Current 12.8 kHz 25.6 kHz 51.2 kHz Operation Verification Test Record Two Channel Self Test Operation Verification Test Record Two Channel Operation Verification Test Record Two Channel Spurious Signals Operation Verification Test Record Two Channel Ch 1, 10 Hz Ch 2, 10 Hz Ch 1, 31.62 Hz Ch 2, 31.62 Hz Operation Verification Test Record Two Channel Frequency Accuracy Open Circuit Voltage Operation Verification Test Record Four Channel Verifying Specifications Agilent 35670A Four Ch, 1400 Hz Start, Ch −80 Operation Verification Test Record Four Channel Operation Verification Test Record Four Channel Spurious Signals Amplitude Accuracy Serial NumberReport Number Test Date Flatness Amplitude Linearity Weight Filter Two Ch, 2/1, 7 dBV −20 dBfs Mag Frequency Accuracy Ch 3 Open Circuit Voltage Source Amplitude Accuracy Page Troubleshooting the Analyzer Troubleshooting the Analyzer Safety Considerations Troubleshooting Hints Equipment Required How to troubleshoot the analyzer Symptom Troubleshooting Test To perform initial verification Data appearsFailures.’’ Symptom Probable Faulty Assembly Rear panel Connect the power cord and set the power switch to on lPower supply.’’ Remove the cover Signal Name Test Location Frequency Probable Faulty Assembly A7 Component Locator, Circuit Side Using a logic probe, check the following signals Signal Name Test Location Probably faulty To troubleshoot the power supplySet the power switch to on l Reconnect the ribbon cable to the Power Supply assembly A6 Digital A5 Analog A2 Input optional A1/A2 Input Remove the A7 CPU assembly Set the power switch to off O Remove the A7 CPU assembly To troubleshoot power-up failures Entry closest to the beginning of the table Determine if the power-on test passed or failed Power-on LEDs Next Test Binary Hexa ~Time LEDs Description DS5 DS9 Decimal Visible Fail code to the following table To troubleshoot CPU, memory, and buses failuresSW2 More than 4 seconds Binary Hexadecimal Probable Faulty Assembly DS5 DS9 A7 Component Locator, Circuit Side LEDs should sequence through 00 clear LEDs with 00 remaining Connect the voltmeter to A102 TP1 FaultyTo troubleshoot display failures Check that the voltage reads is 210 10 Vdc Test Location Signal Name In/Out CPU To troubleshoot IIC bus failures Attach a logic probe to A7 P7 pin 2 SCL LEDs, and the display Attach the logic probe to A7 P7 pin 1 SDA Troubleshooting the Analyzer A7 P10 Pin Signal Name TTL Logic State In Test Mode To troubleshoot fast bus failures To troubleshoot fast bus failures To perform self tests Using a BNC cableRemove all cables from the front panel input connectors After calibration is complete, press the following keys 40‘’To troubleshoot intermittent failures.’’ When the tests have finished, press the following keys Rtn‘’To troubleshoot self-test lockup failures.’’ Following table Fifo Troubleshooting the Analyzer Agilent 35670A Failure Probable Faulty Assembly Next Test A7 CPU Gpib To troubleshoot self-test lockup failures System Utility More TimesTimesP10ALL Continue Common Reasons Troubleshooting Procedure To troubleshoot intermittent failures Preset After this test detects a failure, press the following keys To troubleshoot performance test failures CPU Failing Performance Test Troubleshooting Guide To troubleshoot source and calibrator failures Source Assembly is Connect the voltmeter to A5 TP3 Press the following keys Oscilloscope Setup Parameters Waveform Check the calibrator output Press the following keys Press LOW Level CAL Check the Input assembly Test Location Amplitude 10% Probable Faulty Assembly To troubleshoot input and ADC failuresSet the frequency synthesizer as follows To troubleshoot input and ADC failures Set the oscilloscope to 700 mV/div Enter numbers between 127 and +128 To troubleshoot input failures on four channel analyzers Exchange the Input assemblies To troubleshoot distortion failures ‘’Verifying Specifications.’’Assembly that failed is probably faulty Guides at the sides of the card nest To troubleshoot disk drive failures New formatted disk and repeat the previous step Set the power switch to on l Press the following keys Inst ModeTo troubleshoot auto-range failures Range should be set to 5 dBVrms To troubleshoot DIN connector failures To troubleshoot trigger failures Meas DataTrigger Change the frequency synthesizer’s amplitude to 0.3 Vp-p Press EXT Range + Trigger Mode Failing Probable Faulty Assembly or Next Step Agilent 35670A Check external trigger signal to the Analog assembly To troubleshoot memory battery failures To troubleshoot memory battery failures To troubleshoot microphone power and adapter failures Oscilloscope Setup Parameters To troubleshoot tachometer failures With 2 ±0.2 Vdc offset Press TRG Range +Page Adjusting the Analyzer Adjusting the Analyzer Adjustment Assembly Component Potentially dangerous voltages Operator controls inside the analyzer Adjustment Gpib Code Remote Operation To adjust the frequency reference Equipment Required Frequency Counter To adjust the source Equipment Required Multimeter To adjust the ADC gain, offset and reference Equipment Required Oscilloscope Adjust A5 R407 for a flat trace on the oscilloscope Set the oscilloscope as follows Service Tests Adjustmts ADC Adjustmnt Offset To adjust the input dc offset Equipment Required None Set the power switch to on Press the following keys Channel 3 Adjustmnt Offset To adjust common mode rejection Equipment Required BNC-to-BNC Cable Service Tests Adjustmts Channel 1 Adjustmnt Cmrr Channel 3 Adjustmnt Cmrr Channel 4 Adjustmnt Cmrr To adjust filter flatness Channel 1 Adjustmnt 50 kHz Rtn Channel 2 Adjustmnt 50 kHz Flatness Channel 1 Adjustmnt 25 kHz Rtn Channel 2 Adjustmnt 25 kHz Flatness Rtn Channel 3 Adjustmnt 25 kHz Flatness Rtn Channel 4 Adjustmnt 25 kHz Flatness To adjust the display voltage To adjust the display voltage Replacing Assemblies Replacing Assemblies What to do before replacing the CPU assembly What to do after replacing an assembly A9 Nvram To remove cover To remove rear panel To remove front panel To remove front panel To remove disk drive To remove CPU To remove Nvram To remove memory To remove power supply Replacing Assemblies To remove motherboard To remove motherboard To remove dc-dc converter Replaceable Parts Ordering Information Non-Listed Parts Direct Mail Order System Code NumbersMfr No Mfr Name Address Assemblies Agilent Part Cables Agilent Part Qty Description Mfr Mfr Part Number Code Instrument Covers and Handles Assembly Covers and Brackets Front Panel Parts RFI STRIP-FINGERS BE-CU Bright DIP Rear Panel Parts Chassis Parts Screws, Washers, and Nuts Miscellaneous Parts Option UK4 Parts Replaceable Parts Agilent 35670A Option UK4 Parts Circuit Descriptions Circuit Descriptions Overall Instrument Description BNC CPUNvram Two Channel Overall Block Diagram Overall Instrument Description Four Channel Overall Block Diagram A1 Input Agilent 35670A A1 Input Block Diagram Channel Agilent 35670A Circuit Descriptions A1 Input A1 Input Block Diagram Channel A1 Input Block Diagram Channel A2 Input A2 Input A2 Input Block Diagram Channel 1 or Channel Agilent 35670A Circuit Descriptions A2 Input A2 Input Block Diagram Channel 3 or Channel A2 Input Block Diagram Channel 3 or Channel A5 Analog A5 Analog Block Diagram ADC and Trigger Trigger-Level Input A5 Analog Block Diagram Analog Source and Calibrator ADC timing and synchronization signals A6 Digital A6 Digital Block Diagram Fifo RAM RAM A7 CPU A7 CPU Block Diagram A7 CPU Block Diagram Interface Reset Logic Disk Controller Display Controller Frame Memory A8 Memory Disk Utility A8 Memory A9 Nvram Block Diagram A9 Nvram A10 Rear Panel DAC A10 Rear Panel Block Diagram A11 Keyboard Controller Block Diagram A11 Keyboard Controller A12 BNC A13 Primary Keypad A14 Secondary KeypadA15 Primary Keypad A98 Power Supply A90 Fan A101 Display A99 MotherboardA100 Disk Drive A102 DC-DC Converter Option UK4 Microphone Adapter and Power Supply Option UK4 Microphone Adapter and Power Supply Block Diagram Page Voltages and Signals Voltages and Signals Section Title Describes signals routed Assembly Locations and Connections Assembly Locations Assembly Connections for Two Channel Analyzer Assembly Connections for Four Channel Analyzer Power Supply Voltage Distribution From Path Voltages A1 Input A2 Input A7 J3 Pins A8 P1 Pins PA7 G20MHZ MemresetFlashen PRW SIZE0 SIZE1 A9 Nvram Vbatt A10 Rear Panel ATN DSR Serial PortDIO1 DIO8 DTR Parallel Port BusySelect Tachometer Input DIN KeyboardSource Output External Trigger Input A11 Keyboard Controller A11 Keyboard Controller assembly A12 BNC Signal Name A11 Location ChanaChanb COL0 COL7 Voltages and Signals Agilent 35670A A13 Primary Keypad ROW0 ROW6 COL0 COL2 ROW0 ROW5Pwrfw A22 BNC Signal Name Assembly Using Signal A99 Motherboard 23A A99 Motherboard B5MHZ A10MHZAddata Btach Fanful ExtrginFAN+ Fanoff Hsync H10MHZH20MHZ Imode Pvalid LpfclkPrefs RRW Syscntr SrcclockSrcdata Trigger A100 Disk Drive SEL0 SEL1 DIRHdsel Wdata Vclk VIDVsyncel Pins A7 P2 A102 Page Internal Test Descriptions Power-on Test Description Low-level SubtestsHigh-level Subtests Power-on Test Messages Binary to Hexadecimal Power-on Test Messages Assembly/Sub-block Hexadecimal Message Code Calibration Routine Description DC-Offset Tables and Frequency Correction Curves Calibration Error Messages Viewing the Calibration Correction Curves Disp Format Active Trace ScaleActive Trace Fault Log Messages Bootrom Self-Test Descriptions Assembly Softkey Self Test Name A12 A10 A11 A100 A22 Functional Tests All Self-Test Group Self Tests that Perform a Measurement Self Test Front Panel Softkey Individual Self-Test Descriptions Dgtl Srce Thru Fast BUS Long Conf Test Random Seek Serial Port Self-Test Menu Map and Gpib Commands Self Test Gpib Command Self Test Functionl Tests Digital Processor Trigger Page Backdating Backdating Quick Reference Quick Reference 12-3 Quick Reference Agilent 35670A 12-5 Quick Reference 12-7 12-8 12-9 12-10 12-11 12-12 12-13 A2 Input Block Diagram Channel 2 or Channel 12-15 12-16 12-17 12-18 12-19 12-20 121 12-21 A8 Memory Block Diagram 12-23 12-24 12-25 12-26 Cleaning the screen Index 9-34 Cross talk test10-14 10-9 Controller Self-test description 10-14 Signals 8-29Troubleshooting four channels Installation 10-15 Phone assistance 10-10 10-16 10-1710-12 10-18 Zoom self test Guide to Agilent 35670A Documentation If you are thinking about You want to Then read Need Assistance? 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