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Agilent Technologies 35670-90066 manual A5 Analog Block Diagram ADC and Trigger

Models: 35670-90066

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

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Agilent 35670A

Circuit Descriptions

A5 Analog

A5 Analog Block Diagram: ADC and Trigger

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Agilent Technologies 35670-90066 manual A5 Analog Block Diagram ADC and Trigger

Page 320 Page 322

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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 Plot/Print menus Agilent 35670A Rear Panel Saftey Summary Do not Operate in AN Explosive Atmosphere Safety Symbols Available Accessories Supplied 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 Abbreviations Specifications Frequency Channel mode option AY6 only Average, 0 to −80 dBfs Single Channel Amplitude FFT Dynamic Range Single Channel Phase Input NoiseWindow Parameters Cross Channel Amplitude Cross Channel Phase Input Trigger Time Domain Tachometer Source Output Gpib Digital Interfaces Cispr General Specifications Max Order⋅ Max RPM Order Tracking Option 1D0 Arbitrary Waveform Source-Option 1D4 Swept Sine Measurements -Option 1D2 = 1, 3 or Real Time Octave Analysis Option 1D1 Recommended Test Equipment Suggested Assembly for Series Resistor Schematic and Parts List for Notch Filter TTL Preparing the Analyzer for Use AC Power Requirements DC Power RequirementsLine voltage Operating Typical Current Voltage Standard 2 channel AC Power Cable and Grounding Requirements DC Power Cable and Grounding Requirements Preparing the Analyzer for Use Subject the operator to lethal voltages To do the incoming inspection Set the analyzer’s power switch to on Other excessive moisture To install the analyzer Connect the dc power cable to the dc power source To connect the analyzer to a dc power source Set the analyzer’s power switch to on l Turn on the dc power sourceAdapter, be careful of the heat from the adapter’s tip 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 Reference To connect the analyzer to an Gpib device To connect the analyzer to an external monitor Pin Number Signal Name To connect the optional keyboard Set the power switch to off O Connect the other end of the keyboard cable to the keyboard Standard 2 channel Agilent 35670A Optional 4 channel To connect the microphone adapter To store the analyzer To clean the screen To transport the analyzer If the analyzer will not power up Agilent 35670A Verifying Specifications Overview Verifying Specifications Test Duration Features of the ProgramCalibration Cycle Recommended Test Equipment Program Controlled Test Equipment Operation Verification and Performance TestsMeasurement Uncertainty Test Equipment Program Controlled Model Operation Verification Tests Performance Tests Specification Performance Test Specifications and Performance Tests 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 Press the following keys To run the program without a printer 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 Press Start Testing to display the following softkeys Start Testing Menu Descriptions Test Configuration Menu Descriptions Equipment Configuration Menu Descriptions Prompts you to enter the analyzer’s report number Title Page Menu Descriptions Measurement Uncertainty ±0.0020 dB 101 ±0.0026 dB ±0.0046 dB ±0.0096 dB ±0.0255 dB Using Other Test Equipment Test Instruments Used Performance Test Record Two Channel Self Test DC OffsetNoise Spurious Signals Performance Test Record Two Channel Agilent 35670A Verifying Specifications Flatness Amplitude Accuracy −11 dBVrms, 99.84 kHz, One Ch, Ch Amplitude Linearity Channel Match Weight Filter Frequency Accuracy Anti-Alias FilterInput Coupling Harmonic Distortion Cross Talk Intermodulation Distortion Single Ch Phase Accuracy External TriggerTach Function option D01 only ICP Supply Input ResistanceSource Amplitude Accuracy 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 Safety Considerations Troubleshooting the Analyzer Equipment Required Troubleshooting Hints Symptom Troubleshooting Test How to troubleshoot the analyzer To perform initial verification Data appearsFailures.’’ Symptom Probable Faulty Assembly Power supply.’’ Connect the power cord and set the power switch to on lRear panel Remove the cover Signal Name Test Location Frequency Probable Faulty Assembly A7 Component Locator, Circuit Side Signal Name Test Location Using a logic probe, check the following signals Set the power switch to on l To troubleshoot the power supplyProbably faulty 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 Entry closest to the beginning of the table To troubleshoot power-up failures Determine if the power-on test passed or failed Binary Hexa ~Time LEDs Description DS5 DS9 Decimal Visible Power-on LEDs Next Test SW2 To troubleshoot CPU, memory, and buses failuresFail code to the following table 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 To troubleshoot display failures FaultyConnect the voltmeter to A102 TP1 Check that the voltage reads is 210 10 Vdc Test Location Signal Name In/Out CPU To troubleshoot IIC bus failures LEDs, and the display Attach a logic probe to A7 P7 pin 2 SCL Attach the logic probe to A7 P7 pin 1 SDA Troubleshooting the Analyzer To troubleshoot fast bus failures A7 P10 Pin Signal Name TTL Logic State In Test Mode To troubleshoot fast bus failures Remove all cables from the front panel input connectors Using a BNC cableTo perform self tests After calibration is complete, press the following keys ‘’To troubleshoot self-test lockup failures.’’ When the tests have finished, press the following keys Rtn40‘’To troubleshoot intermittent failures.’’ Following table Fifo Troubleshooting the Analyzer Agilent 35670A A7 CPU Gpib Failure Probable Faulty Assembly Next Test To troubleshoot self-test lockup failures System Utility More TimesTimesP10ALL Continue To troubleshoot intermittent failures Common Reasons Troubleshooting Procedure After this test detects a failure, press the following keys Preset To troubleshoot performance test failures CPU Failing Performance Test Troubleshooting Guide Source To troubleshoot source and calibrator failures Connect the voltmeter to A5 TP3 Press the following keys Assembly is Oscilloscope Setup Parameters Waveform Check the calibrator output Press LOW Level CAL Press the following keys 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 Enter numbers between 127 and +128 Set the oscilloscope to 700 mV/div To troubleshoot input failures on four channel analyzers Exchange the Input assemblies Assembly that failed is probably faulty ‘’Verifying Specifications.’’To troubleshoot distortion failures 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 Press EXT Range + Change the frequency synthesizer’s amplitude to 0.3 Vp-p 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 To troubleshoot tachometer failures Oscilloscope Setup Parameters Press TRG Range + With 2 ±0.2 Vdc offsetPage Adjusting the Analyzer Adjustment Assembly Component Adjusting the Analyzer Operator controls inside the analyzer Potentially dangerous voltages Remote Operation Adjustment Gpib Code Equipment Required Frequency Counter To adjust the frequency reference Equipment Required Multimeter To adjust the source Equipment Required Oscilloscope To adjust the ADC gain, offset and reference Set the oscilloscope as follows Adjust A5 R407 for a flat trace on the oscilloscope Service Tests Adjustmts ADC Adjustmnt Offset Equipment Required None To adjust the input dc offset Set the power switch to on Press the following keys Channel 3 Adjustmnt Offset Equipment Required BNC-to-BNC Cable To adjust common mode rejection Service Tests Adjustmts Channel 1 Adjustmnt Cmrr Channel 3 Adjustmnt Cmrr Channel 4 Adjustmnt Cmrr To adjust filter flatness Rtn Channel 2 Adjustmnt 50 kHz Flatness Channel 1 Adjustmnt 50 kHz Rtn Channel 2 Adjustmnt 25 kHz Flatness Channel 1 Adjustmnt 25 kHz Rtn Channel 4 Adjustmnt 25 kHz Flatness Rtn Channel 3 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 Non-Listed Parts Ordering Information Direct Mail Order System Code NumbersMfr No Mfr Name Address Assemblies Agilent Part Agilent Part Qty Description Mfr Mfr Part Number Code Cables Instrument Covers and Handles Assembly Covers and Brackets RFI STRIP-FINGERS BE-CU Bright DIP Front Panel Parts Rear Panel Parts Chassis Parts Miscellaneous Parts Screws, Washers, and Nuts Option UK4 Parts Replaceable Parts Agilent 35670A Option UK4 Parts Circuit Descriptions Overall Instrument Description Circuit Descriptions BNC CPUNvram Overall Instrument Description Two Channel Overall Block Diagram 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 A6 Digital ADC timing and synchronization signals A6 Digital Block Diagram RAM Fifo RAM A7 CPU A7 CPU Block Diagram A7 CPU Block Diagram Interface Reset Logic Disk Controller Display Controller Frame Memory Disk Utility A8 Memory A8 Memory A9 Nvram A9 Nvram Block Diagram DAC A10 Rear Panel A10 Rear Panel Block Diagram A11 Keyboard Controller A11 Keyboard Controller Block Diagram A12 BNC A13 Primary Keypad A14 Secondary KeypadA15 Primary Keypad A90 Fan A98 Power Supply A100 Disk Drive A99 MotherboardA101 Display A102 DC-DC Converter Option UK4 Microphone Adapter and Power Supply Option UK4 Microphone Adapter and Power Supply Block Diagram Page Voltages and Signals Section Title Describes signals routed Voltages and Signals Assembly Locations Assembly Locations and Connections Assembly Connections for Two Channel Analyzer Assembly Connections for Four Channel Analyzer From Path Voltages Power Supply Voltage Distribution A2 Input A1 Input A7 J3 Pins A8 P1 Pins PA7 Flashen MemresetG20MHZ PRW SIZE0 SIZE1 A9 Nvram Vbatt ATN A10 Rear Panel DIO1 DIO8 Serial PortDSR DTR Parallel Port BusySelect Source Output DIN KeyboardTachometer Input External Trigger Input A11 Keyboard Controller A11 Keyboard Controller assembly A12 BNC Signal Name A11 Location ChanaChanb COL0 COL7 ROW0 ROW6 Voltages and Signals Agilent 35670A A13 Primary Keypad COL0 COL2 ROW0 ROW5Pwrfw A22 BNC Signal Name Assembly Using Signal A99 Motherboard 23A A99 Motherboard Addata A10MHZB5MHZ Btach FAN+ ExtrginFanful Fanoff H20MHZ H10MHZHsync Imode Prefs LpfclkPvalid RRW Srcdata SrcclockSyscntr Trigger A100 Disk Drive Hdsel DIRSEL0 SEL1 Wdata Vclk VIDVsyncel Pins A7 P2 A102 Page Internal Test Descriptions Power-on Test Description Low-level SubtestsHigh-level Subtests Binary to Hexadecimal Power-on Test Messages Assembly/Sub-block Hexadecimal Message Code Power-on Test Messages Calibration Routine Description DC-Offset Tables and Frequency Correction Curves Viewing the Calibration Correction Curves Calibration Error Messages Disp Format Active Trace ScaleActive Trace Bootrom Fault Log Messages Self-Test Descriptions Functional Tests All Self-Test Group Assembly Softkey Self Test Name A12 A10 A11 A100 A22 Self Test Front Panel Softkey Self Tests that Perform a Measurement Dgtl Srce Thru Individual Self-Test Descriptions Fast BUS Long Conf Test Random Seek Serial Port Self Test Gpib Command Self-Test Menu Map and Gpib Commands 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 Index Cleaning the screen 9-34 Cross talk test10-14 Troubleshooting four channels Installation Controller Self-test description 10-14 Signals 8-2910-9 10-15 Phone assistance 10-12 10-1710-10 10-16 10-18 Zoom self test If you are thinking about You want to Then read Guide to Agilent 35670A Documentation Need Assistance? 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