Agilent Technologies 35670A Manuale utente

Agilent 35670A Service Guide

Agilent Part Number 35670-90066

Printed in Malaysia

Print Date: March 2001

8600 Soper Hill Road Everett, Washington 98205-1209 U.S.A.

The Agilent 35670A at a Glance (Front Panel)

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. The menu area displays video labels for the softkeys. The

data area displays measurement data and information about the parameter settings.

3-The [Rtn] key returns the menu to the previous level.

4-The POWER switch turns on the analyzer.

5-Use the SYSTEM keys to control various system-level functions. These functions include saving files, plotting measurement data,

and accessing online help.

6-Use the disk drive to save your work on 3.5 inch flexible disks.

7-The knob moves the markers and the cursor. It also steps through numeric values and scrolls through online help.

8-Use the DISPLAY keys to control what appears on the analyzer’s traces. They only affect how data is displayed; DISPLAY keys

do not change measurement parameters. You can press keys in the DISPLAY menus without losing measurement parameters.

9-Use the MARKER keys to select a variety of marker features.

10-Use the MEASUREMENT keys to control the analyzer’s source and inputs. They also control measurement parameters. You

must make a new measurement if you change a MEASUREMENT parameter.

11-Use the numeric-entry keys to enter a numeric value.

12-The microphone power connector provides power (8 Vdc) for the Microphone Adapter Kit (Option UK4).

13-The connector area of the front panel has two different configurations. The standard analyzer has a source output connector and

two input connectors. The 4-channel analyzer (Option AY6) has four input connectors.

Range indicators are located next to each input connector. The upper LED is the over-range indicator (the signal level exceeds the

current range setting). The lower LED is the half range indicator (the signal level exceeds half the current range setting).

14-A source on/off indicator is located at the left edge of the connector area.

The standard Agilent 35670A (2-channel) has a source connector on the front panel.

The Agilent 35670A at a Glance (Rear Panel)

Agilent 35670A Rear Panel

1-The GPIB connector links the Agilent 35670A to other GPIB devices. GPIB parameters are set in the [Local/GPIB] and

[Plot/Print] menus.

2-The SERIAL PORT and the PARALLEL PORT link the analyzer to plotters and printers. These parameters are set in the

[Plot/Print] menu.

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 [Source] menu.

The standard Agilent 35670A (2-channel) also has a source connector on the front panel.

4-The EXT TRIG connector links the analyzer to an external trigger signal. The external trigger parameters are set in the [Trigger]

menu.

5-The TACH connector links the analyzer to a tachometer. The tachometer parameters are set in the [Input] menu.

6-The KEYBOARD connector attaches an optional keyboard to the analyzer.

7-The DC POWER connector accepts DC power levels from 12 - 28 Vdc (nominal).

8-The AC POWER connector accept a wide range of ac voltage levels.

9-The POWER SELECT switch determines whether the analyzer is powered via the AC POWER connector or the DC POWER

connector.

10-The EXT MONITOR port links the analyzer to multi-sync monitors.

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 lass 1 instrument (provided with a protective earth

terminal). The protective features of this product may be impaired if it is used in

a manner not specified in the operation instructions.

All Light Emitting Diodes (LEDs) used in this product are lass 1 LEDs as per

IE 60825-1.

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II, pollution

degree 2 environment. It is designed to operate at a maximum relative humidity

of 95% and at altitudes of up to 2000 meters. Refer to the specifications tables

for the ac mains voltage requirements and ambient operating temperature range.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage, the correct fuse

is installed, and all safety precautions are taken. Note the instrument’s external

markings described under Safety Symbols.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected

to an electrical protective earth ground. The instrument must be connected to

the ac power mains through a grounded power cable, with the ground wire

firmly connected to an electrical ground (safety ground) at the power outlet.

Any interruption of the protective (grounding) conductor or disconnection of

the protective earth terminal will cause a potential shock hazard that could

result in personal injury.

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. omponent

replacement and internal adjustments must be made only by qualified service

personnel.

Instruments that appear damaged or defective should be made inoperative and

secured against unintended operation until they can be repaired by qualified

service personnel.

WARNING The WARNING sign deno es a hazard. I calls a en ion o a procedure,

prac ice, or he like, which, if no correc ly performed or adhered o,

could resul in personal injury. Do no proceed beyond a WARNING

sign un il he indica ed condi ions are fully unders ood and me .

Caution The AUTION sign denotes a hazard. It calls attention to an operating

procedure, or the like, which, if not correctly performed or adhered to, could

result in damage to or destruction of part or all of the product. Do not proceed

beyond a AUTION sign until the indicated conditions are fully understood and

met.

Safe y 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

erminal is at earth potential.

Standby (supply). Units with this symbol are not completely disconnected from ac mains when

this switch is off

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 Commands: Quick Reference Agilent 35670-90048

The accessories listed in the following table are available for the

Agilent 35670A.

Available Accessories Part Number

DC Power Cable, 3 meter HP 35250A

DC Power Cable with Cigarette Lighter Adapter HP 35251A

Box of ten 3.5-inch double-sided, double-density disks HP 92192A

Using Instrument BASIC with the Agilent 35670A Agilent 35670-90049

Instrument BASIC User’s Handbook HP E2083-90000

HP Thinkjet Printer HP 2225A

HP Quietjet Printer HP 2227A

HP Jet Paper, 2500 sheets HP 92261N

GPIB Cable, 1 meter HP 10833A

GPIB Cable, 2 meter HP 10833B

GPIB Cable, 4 meter HP 10833C

GPIB Cable, 0.5 meter HP 10833D

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 Specifications,’’ provides step-by-step instructions for

installing and running the semiautomated performance test software. This chapter also

provides illustrations that show the equipment set up for each test and a copy of the

test records.

Chapter 4, ‘’Troubleshooting the Analyzer,’’ provides step-by-step instructions for

isolating most failures to the faulty assembly.

Chapter 5, ‘’Adjusting the Analyzer,’’ provides step-by-step instructions for adjusting

the analyzer.

Chapter 6, ‘’Replacing Assemblies,’’ provides step-by-step instructions to follow

before and after replacing an assembly. This chapter also provides step-by-step

instructions for disassembling the analyzer.

Chapter 7, ‘’Replaceable Parts,’’ provides ordering information and lists the

replaceable parts.

Chapter 8, ‘’Circuit Descriptions,’’ provides the overall instrument description and

individual assembly descriptions.

Chapter 9, ‘’Voltages and Signals,’’ shows where the signals and voltages are used in

the analyzer and describes each signal.

Chapter 10, ‘’Internal Test Descriptions,’’ describes the power-on test, calibration

routine, fault log messages, and self tests.

Chapter 11, ‘’Backdating,’’ provides information necessary to modify this manual for

instruments that differ from those currently being produced.

Chapter 12, ‘’Quick Reference,’’ shows assembly locations, cable connections, and all

the block diagrams.

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