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Agilent 35670A Service Guide
Agilent Part Number 35670-90066
Printed in Malaysia
Print Date: March 2001
Copyright © Agilent Technologies, Inc., 1992-1995,2000, 2001.
All rights reserved.
8600 Soper Hill Road Everett, Washington 98205-1209 U.S.A.
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The Agilent 35670A at a Glance (Front Panel)
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Agilent 35670A Front Panel 1-Use the softkeys to select items from the current menu. A softkey’s function is indicated by a video label on the analyzer’s screen. Throughout this book, softkeys are printed like this: [FFT ANALYSIS]. Hardkeys are front-panel buttons whose functions are always the same. They have a label printed directly on the key itself. Throughout this book, hardkeys are printed like this: [Inst Mode]. 2-The analyzer’s screen is divided into the menu area and the display area. T
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The Agilent 35670A at a Glance (Rear Panel)
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Agilent 35670A Rear Panel 1-The GPIB connector links the Agilent 35670A to other GPIB devices. GPIB parameters are set in the [ ] and Local/GPIB [Plot/Print] menus. 2-The SERIAL PORT and the PARALLEL PORT link the analyzer to plotters and printers. These parameters are set in the [ ] menu. Plot/Print 3-The SOURCE connector outputs the analyzer’s source signal. An LED on the front panel indicates if the source is on or off. The source parameters are set in the [ ] menu. Source The standard Agilen
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Saftey Summary The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the customer’s failure to comply with these requirements. GENERAL This product is a Safety Class 1 instrument (provided with a protective earth te
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FUSES Only fuses with the required rated current, voltage, and specified type (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or fire hazard. DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes. DO NOT REMOVE THE INSTRUMENT COVER Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made onl
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Safety Symbols Warning, risk of electric shock Caution, refer to accompanying documents Alternating current Both direct and alternating current Earth (ground) terminal Protective earth (ground) terminal Frame or chassis terminal Terminal is at earth potential. Standby (supply). Units with this symbol are not completely disconnected from ac mains when this switch is off
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Accessories The accessories listed in the following table are supplied with the Agilent 35670A. Supplied Accessories Part Number Line Power Cable See page 2-4 Standard Data Format Utilities HP 5061-8042 Agilent 35670A Operator’s Guide Agilent 35670-90053 Agilent 35670A Quick Start Agilent 35670-90056 Agilent 35670A Installation and Verification Guide Agilent 35670-90054 Agilent 35670A GPIB Command Reference Agilent 35670-90057 GPIB Programmer’s Guide Agilent 5960-5708 Agilent 35670A GPIB Command
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In This Book This guide provides instructions for installing, verifying performance, and repairing the Agilent 35670A Dynamic Signal Analyzer. Chapter 1, ‘’Specifications,’’ lists the specifications for the Agilent 35670A and the specifications for the required test equipment. Chapter 2, ‘’Preparing the Analyzer for Use,’’ provides step-by-step instructions for getting the analyzer ready to use and instructions on cleaning the screen, storing, and transporting. Chapter 3, ‘’Verifying Specificati
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Table of Contents 1 Specifications Frequency 1-3 Single Channel Amplitude 1-4 FFT Dynamic Range 1-5 Input Noise 1-6 Window Parameters 1-6 Single Channel Phase 1-6 Cross Channel Amplitude 1-7 Cross Channel Phase 1-7 Input 1-8 Time Domain 1-9 Trigger 1-9 Tachometer 1-10 Source Output 1-11 Digital Interfaces 1-12 General Specifications 1-13 Order Tracking — Option 1D0 1-14 Swept Sine Measurements —Option 1D2 1-15 Arbitrary Waveform Source—Option 1D4 1-15 Real Time Octave Analysis — Option 1D1 1-16
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2 Preparing the Analyzer for Use To do the incoming inspection 2-5 To install the analyzer 2-7 To connect the analyzer to a dc power source 2-8 To change the fuses 2-10 To connect the analyzer to a serial device 2-11 To connect the analyzer to a parallel device 2-11 To connect the analyzer to an GPIB device 2-12 To connect the analyzer to an external monitor 2-13 To connect the optional keyboard 2-14 To connect the microphone adapter 2-16 To clean the screen 2-17 To store the analyzer 2-17 To tr
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To set up the anti-alias filter test 3-23 To set up the input coupling test 3-24 To set up the harmonic distortion test 3-25 To set up the intermodulation distortion test 3-28 To set up the cross talk test 3-30 To set up the single channel phase accuracy test 3-34 To set up the external trigger test 3-35 To set up the tach function test 3-37 To set up the input resistance test 3-39 To set up the ICP supply test 3-41 To set up the source amplitude accuracy test 3-45 To set up the source output re
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4 Troubleshooting the Analyzer How to troubleshoot the analyzer 4-4 To perform initial verification 4-5 To troubleshoot the power supply 4-11 To troubleshoot power-up failures 4-15 To troubleshoot CPU, memory, and buses failures 4-18 To troubleshoot display failures 4-22 To troubleshoot IIC bus failures 4-25 To troubleshoot fast bus failures 4-29 To perform self tests 4-31 To troubleshoot self-test lockup failures 4-37 To troubleshoot intermittent failures 4-40 To troubleshoot performance test f
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5 Adjusting the Analyzer To adjust the frequency reference 5-5 To adjust the source 5-6 To adjust the ADC gain, offset and reference 5-7 To adjust the input dc offset 5-10 To adjust common mode rejection 5-13 To adjust filter flatness 5-17 To adjust the display voltage 5-21 6 Replacing Assemblies What to do before replacing the CPU assembly 6-3 What to do after replacing an assembly 6-4 To remove cover 6-6 To remove rear panel 6-7 To remove front panel 6-8 To remove disk drive 6-10 To remove CPU
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7 Replaceable Parts Ordering Information 7-2 Assemblies 7-4 Cables 7-6 Instrument Covers and Handles 7-7 Assembly Covers and Brackets 7-8 Front Panel Parts 7-9 Rear Panel Parts 7-10 Chassis Parts 7-11 Screws, Washers, and Nuts 7-12 Miscellaneous Parts 7-12 Option UK4 Parts 7-13
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8 Circuit Descriptions Overall Instrument Description 8-2 A1 Input 8-6 A2 Input 8-12 A5 Analog 8-18 A6 Digital 8-22 A7 CPU 8-25 A8 Memory 8-30 A9 NVRAM 8-32 A10 Rear Panel 8-33 A11 Keyboard Controller 8-35 A12 BNC 8-36 A13 Primary Keypad 8-37 A14 Secondary Keypad 8-37 A15 Primary Keypad 8-37 A22 BNC 8-37 A90 Fan 8-38 A98 Power Supply 8-38 A99 Motherboard 8-39 A100 Disk Drive 8-39 A101 Display 8-39 A102 DC-DC Converter 8-39 Option UK4 Microphone Adapter and Power Supply 8-40
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9 Voltages and Signals Assembly Locations and Connections 9-3 Power Supply Voltage Distribution 9-6 A1 Input 9-7 A2 Input 9-7 A8 Memory 9-8 A9 NVRAM 9-12 A10 Rear Panel 9-14 A11 Keyboard Controller 9-18 A12 BNC 9-20 A13 Primary Keypad 9-21 A14 Secondary Keypad 9-23 A22 BNC 9-24 A99 Motherboard 9-25 A100 Disk Drive 9-34 A101 Display 9-36 A102 DC-DC Converter 9-37 10 Internal Test Descriptions Power-on Test Description 10-2 Calibration Routine Description 10-5 Fault Log Messages 10-9 Self-Test Des
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1 Specifications 1-1
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Specifications This chapter contains the specifications for the Agilent 35670A Dynamic Signal Analyzer and the critical specifications for the equipment required to test the Agilent 35670A. Instrument specifications apply after 15 minutes warm-up and within 2 hours of the last self-calibration. When the internal cooling fan has been turned OFF, specifications apply within 5 minutes of the last self-calibration. All specifications are with 400 line frequency resolution unless stated otherwise. Fo
