Agilent Technologies 33120A Manuel utilisateur

Service Guide

Publication Number 33120-90017 (order as 33120-90104 manual set)

Edition 6, March 2002

©Copyright Agilent Technologies, Inc. 1994-2002

For Safety information, Warranties, and Regulatory information,

see the last page in this manual.

Agilent 33120A

15 MHz Function /

Arbitrary Waveform Generator

Cover Page for Web Version ONLY (Service Guide)

The Agilent Technologies 33120A is a high-performance 15 MHz

synthesized function generator with built-in arbitrary waveform

capability. Its combination of bench-top and system features makes this

function generator a versatile solution for your testing requirements now

and in the future.

Convenient bench-top features

10 standard waveforms

Built-in 12-bit 40 MSa/s arbitrary waveform capability

Easy-to-use knob input

Highly visible vacuum-fluorescent display

Instrument state storage

Portable, ruggedized case with non-skid feet

Flexible system features

Four downloadable 16,000-point arbitrary waveform memories

GPIB (IEEE-488) interface and RS-232 interface are standard

SCPI (Standard Commands for Programmable Instruments) compatibility

Agilent IntuiLink Arb Waveform Generation Software for

Microsoft®Windows®

Warning The procedures in this manual are intended for use by qualified,

service-trained personnel only.

Agilent 33120A

15 MHz Function /

Arbitrary Waveform Generator

Note: Unless otherwise indicated, this manual applies to all Serial Numbers.

Page 1 (Service Guide)

The Front Panel at a Glance

1Function / Modulation keys

2Menu operation keys

3Waveform modify keys

4Single / Internal Trigger key

(Burst and Sweep only)

5Recall / Store instrument state key

6 Enter Number key

7 Shift / Local key

8 Enter Number “units” keys

Front-Panel Number Entry

Increments the flashing digit.

Decrements the flashing digit.

Moves the flashing digit to the right.

Moves the flashing digit to the left.

Use “Enter” for those operations that do not

require units to be specified (AM Level,

Offset, % Duty, and Store/Recall State).

You can enter numbers from the front-panel using one of three methods.

Use the arrow keys to edit individual digits.

Use the “Enter Number” mode to enter a number with the appropriate units.

Use the knob and the arrow keys to modify the displayed number.

The Front-Panel Menu at a Glance

The menu is organized in a top-down tree structure with three levels.

A: MODulation MENU

1: AM SHAPE

2: AM SOURCE

3: FM SHAPE

4: BURST CNT

5: BURST RATE

6: BURST PHAS

7: BURST SRC

8: FSK FREQ

9: FSK RATE

10: FSK SRC

B: SWP (Sweep) MENU

1: START F

2: STOP F

3: SWP TIME

4: SWP MODE

C: EDIT MENU*

1: NEW ARB

[ 2: POINTS ]

[ 3: LINE EDIT ]

[ 4: POINT EDIT ]

[ 5: INVERT ]

[ 6: SAVE AS ]

7: DELETE

* The commands enclosed in square brackets ( [ ] ) are “hidden” until you make a selection from the

NEW ARB command to initiate a new edit session.

D: SYStem MENU

1: OUT TERM

2: POWER ON

3: ERROR

4: TEST

5: COMMA

6: REVISION

E: Input / Output MENU

1: HPIB ADDR

2: INTERFACE

3: BAUD RATE

4: PARITY

5: LANGUAGE

F: CALibration MENU*

1: SECURED or [ 1: UNSECURED ]

[ 2: CALIBRATE ]

3: CAL COUNT

4: MESSAGE

*The commands enclosed in square brackets ( [ ] ) are “hidden” unless the function generator

is UNSECURED for calibration.

Display Annunciators

Adrs

Rmt

Trig

Ext

FSK

Burst

Swp

ERROR

Offset

Shift

Num

Arb

Function generator is addressed to listen or talk over a remote interface.

Function generator is in remote mode (remote interface).

Function generator is waiting for a single trigger or external trigger (Burst, Sweep).

AM modulation is enabled.

FM modulation is enabled.

Function generator is set for an external modulation source (AM, FSK, Burst).

FSK (frequency-shift keying) modulation is enabled.

Burst modulation is enabled.

Sweep mode is enabled.

Hardware or remote interface command errors are detected.

The waveform is being output with an offset voltage.

“Shift” key has been pressed. Press “Shift” again to turn off.

“Enter Number” mode is enabled. Press “Shift-Cancel” to disable.

Arbitrary waveform function is enabled.

Sine waveform function is enabled.

Square waveform function is enabled.

Triangle waveform function is enabled.

Ramp waveform function is enabled.

To review the display annunciators, hold down the Shift key as you

turn on the function generator.

The Rear Panel at a Glance

1Chassis ground

2Power-line fuse-holder assembly

3Power-line voltage setting

4AM modulation input terminal

5External Trigger / FSK / Burst modulation

input terminal

6GPIB (IEEE-488) interface connector

7 RS-232 interface connector

Use the front-panel Input / Output Menu to:

 Select the GPIB or RS-232 interface (see chapter 4 in User’s Guide).

 Set the GPIB bus address (see chapter 4 in User’s Guide).

 Set the RS-232 baud rate and parity (see chapter 4 in User’s Guide).

In This Book

Specifications Chapter 1 lists the function generator’s specifications

and describes how to interpret these specifications.

Quick Start Chapter 2 prepares the function generator for use and

helps you get familiar with a few of its front-panel features.

Front-Panel Menu Operation Chapter 3 introduces you to the front-panel

menu and describes some of the function generator’s menu features.

Calibration Procedures Chapter 4 provides calibration, verification,

and adjustment procedures for the function generator.

Theory of Operation Chapter 5 describes block and circuit level theory

related to the operation the function generator.

Service Chapter 6 provides guidelines for returning your function

generator to Agilent for servicing, or for servicing it yourself.

Replaceable Parts Chapter 7 contains a detailed parts lists of the

function generator.

Schematics Chapter 8 contains the function generator’s block diagram,

schematics, disassembly drawings, and component locator drawings.

For information on using the Phase-Lock Option for the 33120A, refer to

the User’s and Service Guide included with the Option 001.

If you have questions relating to the operation of the 33120A,

call 1-800-452-4844 in the United States, or contact your nearest

Agilent Technologies Sales Office.

If you believe your 33120A has failed, refer to “Operating Checklist”,

“Types of Service Available”, and “Repackaging for Shipment” at the

beginning of chapter 6.

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