Agilent Technologies 75000 C, E1445A User Manual

Agilent 75000 SERIES C

Agilent E1445A Arbitrary Function Generator

Service Manual

Serial Numbers

This manual applies directl y to instruments with se ria l numbers prefixed with 3144A.

Manual Part Number: E1445-90011 Printed: Novemb er 2005 Edition 2

Printed in U.S.A. E1105

Chapter 1 - General Information

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Inspection/Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Shipping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

AFG Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

AFG Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

AFG Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

AFG Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 2 - Verification Tests

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Test Conditions/Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Verification Test Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Command Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Functional Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Ref In/Marker Out Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Start Arm In Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Start Arm In Test (cont’d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Gate In Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Output Relay Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Operation Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Test 2-1: DC Zeros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Test 2-2: DC Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Test 2-3: DC Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Test 2-4: AC Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Test 2-5: AC Flatness - 250 kHz Filter . . . . . . . . . . . . . . . . . . . . . . . . 49

Test 2-6: AC Flatness - 10 MHz Filter . . . . . . . . . . . . . . . . . . . . . . . . 52

Test 2-7: Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Test 2-8: Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Test 2-9: Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . . . . . . . 64

Test 2-10: Spurious/Non-Harmonic Distortion . . . . . . . . . . . . . . . . . . . . 69

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

AFG Test Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Measurement Uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Test Accuracy Ratio (TAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Contents

Agilent E1445A Service Manual Contents 1

Chapter 3 - Ad ju stments

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Recommended Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Calibration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Defeating Calibration Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

DC Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

AC Flatness Adjustment Procedure - 250 kHz Filter . . . . . . . . . . . . . . . . . . . 93

AC Flatness Adjustment Procedure - 10 MHz Filter . . . . . . . . . . . . . . . . . . . 94

Skew DAC Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Chapter 4 - Replaceable Parts

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Exchange Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Chapter 5 - Service

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Troubleshoot in g Te c hniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Identifying the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Testing the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Removing BNC Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Repair/Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

ESD Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Soldering Printed Circuit Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Post-Repair Safety Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

2 Conten ts Agilen t E1 44 5A Service Manua l

Certification

Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (form er ly National Bureau of Standar ds), to the exte nt al lo w ed by that organi zati on’s calibrati on f acility, and to the calib rat i on facilities of other International Standards Organization members.

Warranty

This Agilent Technologies product is w ar ra nt ed against def ects in mater ia l s and workmans hi p fo r a period of three years from date of shipment. Du ra ti on and conditi ons of w ar ra nt y for this product may be supers eded when the pr oduct is integr ated into (bec om es a part of) other Agil ent products. Duri ng t he warranty per io d, Ag il e nt Technolog ie s will, at its opt i on, either repair or replace pr oducts whic h prove to be def ec t ive.

For warrant y service or rep ai r, t his product mu st be r et ur ned to a service fa cility designated by Agi le n t Technologies. Buyer shall prepay shippin g charges to Agil en t a nd A gi lent shall pay shipping char ges to return the prod uct to Buyer. How ever, Buyer shal l pay all shipping ch arges, duties, and taxes for pr oducts returned t o A gilent from another count ry.

Agilent warrants that its software and firmware designated by Agilent for use with a product will execute its programming instructions when proper l y in st al led on that pro duct. Agilent does not warrant th at the operatio n of th e product, or softw a re, or firmware w ill be uninterru pt ed or er ro r free.

Limitation Of Warranty

The foregoi ng w ar ra nt y shall not apply t o defects res ul ting from imprope r or in adequate mai nt enance by Buyer, Buyer-sup pl ie d pr oducts or interfa ci ng, unautho rized modificat i on or misuse, operation outside o f the environmen ta l specificati ons for the product, or improper site pr eparation or ma i nt enance.

The design and implementation of a ny ci r cui t on this produc t is the sol e responsibi l ity of the Buyer. A gi le nt does not warrant the Buyer’s circuitry or malfunctions of Agi le nt pro ducts that resul t fr om th e B uyer’s circuitr y. In addition, Agil ent does not warrant any damage th at occurs as a resu lt of the B uyer’s circuit or a ny defects tha t r es ul t f rom Buyer-suppli ed products.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. Agilent SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. Agilent SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

Notice

The inform at i on contained i n th is document is s ubj ect to change w i t hout not ice. Agilen t Technologies MAKES NO WA R R A N TY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Agilent shall not be liable for errors contained herein or for incident al or consequential dam ages in connect i on w i t h th e fu rni shing, perfo rmance or use of th is m at erial. This document contains proprietar y in for m at i on w hich is protect ed by copyright. All rights are reserved. No part of this docum ent may be photocopied, reproduced, or translated to anot her language w i thout the prio r wr it t en consent of A gi le nt T echnologies, Inc. Agilen t as sum es no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent.

U.S. Government Restricted Rights

The Softwa re and Document at ion have bee n developed en tirely at private expense . They are deliver ed and license d as "comme rc ia l computer sof t w ar e" as defined in DFA R S 252.227- 7013 (Oct 1988), DFARS 25 2. 211-7015 (May 1991) or DFARS 252. 227-7014 (Jun

1995), as a "com m ercial ite m" as defined in F AR 2.1 01(a), or as "Re stri cted comput er sof tware" as def in ed i n FA R 52. 227-19 (Jun

1987)(or any e qui valent agenc y re gul at ion or contrac t cl ause), whiche ver is applicabl e. You have onl y th ose ri ght s provided for s u ch Software and Document ation by the applicable FA R or DFA R S clause or th e A gilent standard softwa re agr eement for the product involved.

Agilent E1445A Arbitrary Function Generator Service Manual

Edition 2

Agilent E1445A Service Manual 3

Printing H is tory

The Printing H i story shown belo w list s al l Editions and Up dat es of this manua l and t he printing date (s ). T he fi rs t pri nt in g of the manual is Edition 1. The Edition number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages to correct the current Edition of the manual. Updates are numbered sequentially starting with Update 1. When a new Edition is created, it contains all the Update information for the previous Edition. Each new Edition or Update also includes a re vi se d copy of this print ing history pag e. Ma ny pr oduct updates or re vi si ons do not require m anual chang es and, conversely, manual correction s m ay be done with out accomp anying product changes. Th erefore, do not expect a one-t o -o ne correspon dence between product updates and manual updates.

Edition 1 (P ar t Num ber E1445-90010). . . . . . . . . . . . . . . . . . . . September 1992

Edition 2 (P ar t Num ber E1445-90011). . . . . . . . . . . . . . . . . . . . September 1996

Safety Symbols

Instructi on m anual symbol affixed to prod uct. Indicates that the user must refer to the manual for specific WARNING or CAUTION information to avoid personal injury or damage t o t he pr oduct.

Alternating current (AC).

Direct current (DC).

Indicates the field wiring terminal that must be connec t ed t o earth ground bef or e operating the equipm ent—protects agains t el ectrical shock in case of fault.

Frame or chassis ground terminal— typically connects to the equipment’s metal frame.

WARNING

CAUTION

Indicate s ha zardous volta ges.

Calls at te nt i on t o a procedure, pr actice, or condition that could cause bodily i nj ury o r death.

Calls at te nt i on t o a procedure, pr actice, or condition that could possibl y ca use damage to equipme nt or pe rm anent loss of dat a.

WARNINGS

The following general safety precautions must be obse rv ed during all phases of op er ati on, service, and re pai r of this product. Failure to com p l y w i th t hese precautions or with sp ec i fi c w arnings else w here in this m anual violates saf et y st andards of des ign, manufac ture, and int ended use of the produc t. A gi le n t Te chnologies assume s no l i ab i l it y for the customer’s fai lure to com p l y with thes e requir em ents.

Ground the equipm en t: For Safety Class 1 equipment ( equipment ha vi ng a pr otective ea rt h t er minal), an uni nterruptib le sa fe ty earth

ground must be provided from t h e m a ins power source to the product input wiring ter minals or supplied power cable.

DO NOT operate the product in an explosiv e atmosphere or in the presence of flammabl e gases or fum es.

For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type. DO NOT use re pai r ed fuses or short -c i rc ui te d fuse holders.

Keep away from live circuits: Operati ng personnel mu st not re m ove equipment covers or shields . P roc edures involv in g th e re moval of covers or shi el ds are for use by service-train ed personnel onl y. U nder certain cond it i ons, dangerous voltages may exi st even with the equipmen t s w itched off. To avoid dangerous e le ct r ic al shock, DO NOT perform procedures involving cover or shie ld removal unless you are qualif ie d t o do so.

DO NOT operat e damaged equipmen t: Whe n e ver it is possible that the sa fe ty prot e ct ion features bui l t in t o t hi s pr oduct have been impaired, eit he r t hr ough physical damage, exc es si ve moisture, or any other reas on, R EMOVE POW ER and do not use the pr oduct until safe opera tion can be verified by service- trained pers onnel. If necess ary, return the pr oduct to an Agi l ent Technologies Sales an d Ser vice Office for service and repair to ensure that safety features are maintained.

DO NOT ser vice or adjus t alone: Do not at te m pt internal service or adj us tm ent unless a not her person, ca pable of render in g fi rs t ai d and resuscitation, is present.

DO NOT substitute par ts or modi fy equi pm e nt: Because of the danger of introducing additional hazards, do not instal l substitute parts or perfo rm any unauthoriz ed modifica t io n to the product. R et ur n the product to an A gilent Technologies Sal es and Service Office for service and repair to ensure that safety features are maintained.

4 Agilent E1445A Service Manual

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name: Manufacturer’s Address:

Agilent Technologies, Incorporated 815 – 14th St. SW Loveland, Colorado 80537 USA

Declares, that the product

Product Name: Model Number:

Arbitrary Function Generator E1445A

Product Options: This declaration covers all options of the above product(s).

Conforms with the following European Directives:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly.

Conforms with the following product standards: EMC Standard

IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998 CISPR 11:1990 / EN 55011:1991 IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995 IEC 61000-4-3:1995 / EN 61000-4-3:1995 IEC 61000-4-4:1995 / EN 61000-4-4:1995 IEC 61000-4-5:1995 / EN 61000-4-5:1995 IEC 61000-4-6:1996 / EN 61000-4-6:1996 IEC 61000-4-11:1994 / EN 61000-4-11:1994

Canada: ICES-001:1998 Australia/New Zealand: AS/NZS 2064.1

Limit

Group 1 Class A 4kV CD, 8kV AD 3 V/m, 80-1000 MHz

0.5kV signal lines, 1kV power lines

0.5 kV line-line, 1 kV line-ground 3V, 0.15-80 MHz I cycle, 100% Dips: 30% 10ms; 60% 100ms Interrupt > 95%@5000ms

The product was tested in a typical configuration with Agilent Technologies test systems.

Safety

IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995 Canada: CSA C22.2 No. 1010.1:1992 UL 3111-1: 1994

1 June 2001

Date

Ray Corson

Product Regulations Program Manager

Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D 71034 Böblingen, Germany

For further information, please contact your local Agilent Technologies sales office, agent or distributor.

Revision: B.01 Issue Date: 1 June 2001 Document E1445A.DOC

Notes

6 Agilent E1445A Service Manual

Chapter 1

General Information

Introduction This manual co nta ins information required to test, trouble shoot, and repa ir

the Agilent E144 5A C-Siz e VXI Arbit rary Func tion Generator (AFG). See the Agilent E1445A User’s Manual for additional informa ti on. Fi gur e 1-1 shows the Agile nt E1445A. This chapter inc ludes the followi ng se c ti ons:

• Introduction

• Safety Considerat ions

• Inspection/Shipping

• Environment

• AFG Description

• Recommended Test Equi pm en t

Figure 1-1. E1445A Arbitrary Function Generator

Agilent E1445A Service Manual General Information 9

Safety Considerations

This product is a Safet y Cl as s I instrument that i s provided with a protect ive earth terminal when installed in the mainframe. The mainframe, AFG, and all related documentat ion should be reviewed for familiarizat ion with safety markings and instructions before opera ti on or se rv ic e .

Refer to the WARNINGS page (page 4) in this manual for a summary of safety information. Safety information for preventive maintenance, testing, and service follows and is also found throughout this manual.

Warnings and

Cautions

WARNING

This section cont ai ns W AR N INGS which must be followed for your protection and CAUTIONS whi c h mus t be followed to avoid dama ge to the equipment whe n pe rforming instrume nt maintenanc e o r repa ir .

SERVICE-TRAINED PERSONNEL ONLY. The information in this manual is for service-trained personnel who are familiar with electronic circuitry and are aware of the hazards involved. To avoid personal injury or damage to the instrument, do not perform procedures in this manual or do any servicing unless you are qualified to do so.

CHECK MAINFRAME POWER SETTINGS. Before applying power, verify t h at th e m ai n f ra m e se t ti n g m a tc hes the li ne voltage and that the correct fuse is installed. An uninterruptible safety earth ground must be provided from the main power source to t he suppl ie d po we r co r d set .

GROUNDING REQUIREMENTS. Interruption of the protective (grounding) conductor (inside or outside the mainframe) or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury. (Grounding one conductor of a two-conductor outlet is not sufficient protection.)

IMPAIRED PROTECTION. Whenever it is likely that instrument protection has been impaired, the mainframe must be made inoperative and be secu r ed against any u n intende d o p e rat i o n .

REMOVE POWER IF POSSIBLE. Some procedures in this manual may be performed with power supplied to the mainframe whil e p ro t e ct iv e covers ar e removed. Energy available at many points may, if contacted, result in personal injury. (If maintenance can be performed without power applied, the power should be removed.)

10 General Information Agilent E1445A Service Manual

WARNING

USING AUTOTRANSFORMERS. If the mainframe is to be energized via an autotransformer (for vol tage reduction) make sure the common terminal is connected to neutral (that is, the grounded side of the main’s supply).

CAPACITOR VOLTAGES. Capacitors inside the mainframe may remain charged even when the mainframe has been disconnected from its source of supply.

USE PROPER FUSES. For continued protection against fire hazard, replace the line fuses only with fuses of the sa me current rating and type (such as normal blow, time delay, etc.). Do not use repaired fuses or short-circuited fuseholders.

CAUTION

Static electricity is a major cause of component failure. To prevent damage to the electrical components in the AFG, observe anti-static techniques whenever working on the AFG.

Agilent E1445A Se rvice Man ual General Inform ation 11

Inspection/ Shipping

This section de sc ri be s initial (in co ming) inspection and shipping guidelines for t he AFG.

Inspection

WARNING

Initial

Use the steps in F igure 1-2 as guidelines to perform initial inspe c tion of the AFG.

To avoid possible hazardous electrical shock, do not perform electrical tests if there are signs of shipping damage to the shipping container or to the instrument.

Figure 1-2. Initial (Incoming) Inspec tion Guidelines

12 General Information Agilent E1445A Service Manual

Shipping

Guidelines

Follow the step s in Figure 1-3 to retu rn the AFG to an Agilent Technologies Sales and Support Offi ce or Ser vi ce Center.

1. Prepare the module

• Remove user wiring from terminal bloc k

• Attach tag to module th at identifies :

• Owner

• Model Number/Serial Number

• Service Required

• Place tagged devi ce in approved anti-static bag

2. Package the module

• Place packag ed mod ule in shipping carton*

• Place 75 to 100 mm (3 to 4 in ch es) of

shock-abs orbi ng material ar ound the module

• Seal the shipping c ont ai ne r s ecurely

• Mark the shipping container FRAGI LE

3. Ship the module to Agi lent Technologie s

• Place address lab el on s hip ping carton

• Send carton to Agilent Technologies

* We recommend that you use the same shipping materials as those used in factory packaging (available from Agilent Technologies). For other (commerc ia l ly-available ) sh ipp ing ma te ri a ls, use a double-wall carton with minimum 2.4 M Pa (350 psi) test.

Figure 1-3. Packaging/Shipping Guidelines

Agilent E1445A Se rvice Man ual General Inform ation 13

Environment The recommended oper at in g env ironment for the Agilent E1445A

Agilent

AFG is:

Environment Temperature Humidity

Operating 0

Storage and Shipment

AFG Description

Specifications

Options

AFG

C to +55oC <65% relative (0oC to +40oC)

-40

C to +75oC <65% relative (0oC to +40oC)

The Agilent E1445A Ar bi tr a ry Function Generator is a VXIbus C -size , message-based instrument. The AFG can operate in a C-size VXIbus mainframe usi ng a n Agi le nt E1405/E1406 Command Module a nd St a nda r d Commands for Programmable Instruments (SCPI).

The AFG has 13 bits of resol ution (including sign). It uses a sequen cer architecture, with 256K points of Segment storage and 32K point s of Sequence storage. The AFG has two internal timebases, 40 MHz and (app roximate l y) 42 .9 MHz.

AFG specificatio ns a re li sted in Appendix A of the Agi le nt E1445A User’s Manual. These specifications are the performance standards or limits against which the instru m ent may be teste d.

Arbitrary Waveform Ge ne rat ion Software for HP 9000 Serie s 30 0 computers c an be order e d as Opti on 005.

AFG

Serial Numbers

Figure 1-4 shows Agil en t Te chnologies’ serial num be r str uc ture . AFG’s cove red by t h is man ual ar e iden tified by a s erial number pr efix listed on th e title page.

Figure 1-4. Agilent Serial Numbers

14 General Information Agilent E1445A Service Manual

Recommended Test Equipment

Table 1-1 list s the te st equipment recommended f or te sting, adjusting, and servicing the AFG. Essential requirements for each piece of test equipment are described in the Requirements col um n .

Table 1-1. Recommended Test Equipment

Instrument Requirements Recommended

Model

Controller, GP-IB GP-IB compatibility as defined by IEEE

Standard 488-1988 and the identical ANSI Standard MC1.1: SH1, AH1, T2, TE0, L2, LE0, SR0, RL0, PP0, DC0, DT0, and C1, 2, 3, 4, 5.

Mainframe Compatible with AFG Agilent E1401B/T or

Command Module 10 MHz Clk Out

TTL compatible Trig Out

Digital Multimeter DCV, ACV, 4-wire ohms w/offset comp Agilent 3458A O,P,A

Power Meter Frequency Range: 400 kHz - 10.8 MHz Agilent 8902A O,P,A

Power Sensor Frequency Range: 400 kHz - 10.8 MHz Agilent 11722A O,P,A

Counter Frequency Range: 100 Hz - 45 MHz Agilent 5334A/B O,P

Spectrum Analyzer Frequency Range: 100 kHz - 150 MHz Agilent 8566B O,P,A

HP 9000 Series 300 or IBM Compatible PC with HP BASIC

E1421B

Agilent E1405B or Agilent E1406A

Use*

F,O,P, A,T

Oscilloscope General Purpose

Bandwidth: 20 MHz

50 Ω feed-thru termination

* F = Functional Verification, O = Operation Verification Tests, P = Performance Verification Tests, A = Adjustments, T = Troubleshooting

50 ±0.10 Ω

Agilent 54111D F

Agilent 11048C O,P,A

Agilent E1445A Se rvice Man ual General Inform ation 15

16 General Information Agilent E1445A Service Manual

Chapter 2

Verification Tests

Introduction The three levels of test procedures described in this chapter are use d to

verify that the Agilen t E1445A:

• is fully functional (Fu nctional Verific a tion)

• meets selected testable specifications (Operation Verification)

• meets all testable specifications (Performance Verification)

WARNING

Test Conditions/

Procedures

Performance

Test Record

Do not perform any of the following verification tests unless you are a qualified, service-trained technician and have read the WARNINGS and CAUTIONS in Chapter 1.

See Table 1-1 for test equipment requ ir em e nts. You should complete the Performance Verification tests at least once a year. For heavy use or severe operating environments, perform the tests more often.

Before performing these tests, allow the AFG to warm up for at least one hour . The temperature should be within recent calibration), and between 18

The verificati on te sts assume that th e per son performing the te sts understands how to operate the mainframe, the AFG, and specified test equipment. T he te st pr oc e dur e s do not sp e cify equipment settin gs f or tes t equipment, except in gener al terms. It is assumed that a qualified, service-trained technicia n w ill se le c t a nd c onne c t the c ab le s, adap t ers, a n d probes required f or the test.

The resul t s o f each Perf o rmance Verifi catio n t est m ay be recorded in Tabl e 2-11, Agilent E1445A Performance Test Recor d. This form can be copied.

±5

C of T

C and 28oC.

(the temperature of the most

cal

Verification Test

Examples

Each verificatio n te st proc e dur e include s a n e xa mpl e program that performs the test. All exa mple programs a ssume the followin g co nf igur a tion:

• Controller is an HP 9000 Series 200/300 compu te r

• Programming language is HP BASIC

• AFG address is 70910

Agilent E1445A Service Manual Verification Tests 17

Command Coupling Many of the AFG SCPI commands are value-coupled. In order to prevent

"Settings C onflict" errors, co uple d c o m ma nds must be sent con tiguously by placing them in th e same program line, or by suppr e ssi ng the e nd- of - line terminator . (Fo r m or e in fo rm a tion on command co upling and syntax, see Chapter 1 of the Agilent E1445A User’s Manual). In HP BAS IC, the end-of-line ter minator can be suppressed by linking th e commands with a semi-colon (;) and a colon (:), as illustra te d below:

ROSC:SOUR INT1; :TRIG:S OU R INT1

In the Example programs, these commands would appear as follows:

OUTPUT 70910;"ROSC:SOUR:INT1;"; OUTPUT 70910;":TRIG:SOUR:INT1"

Functional Verification

NOTE

The purpose of these te sts is to verify that the AFG is fun ctioni ng pr ope r ly and that all front pa nel inputs and ou tputs are working . No a tte mpt is made to verify that the A F G is me e ting specificati ons. Functional Ver ific a tion for the AFG include s the f ollowing tests:

• Self-Test

• Ref In/Marker Out Test

• Start A r m I n Test

• Gate In Test

• Output Rela y Te st

For a quick functiona l ch eck of the AFG, per form only the Self-Test.

An example program tha t perfor m s al l of the Functional Verification tests is included at the end of this section . An Agilen t E1405/E1406 Comma nd Module is requir e d for this pr ogram.

Some of the tests use the "TRI G OUT" port of the Comma nd M odule. This port uses negati ve logic, i.e., the hi gh v oltage is a logical 0 and the low voltage is a logical 1.

18 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

Functional Ve rification: Self-Test

Description

The AFG self-test performs the following internal checks:

• internal interrupt lines

• waveform sele ct RAM

• segmen t se quence RAM

• waveform segment RAM

• DDS/NCO operation

• sine wave generation

• arbitrary waveform generation

• marker generation

• waveform cycle and arm counters

• sweep timer

• frequency-shift keying

• stop trigger

• DC analog paramete rs (amplitude, o ffset, attenuato rs , filters,

calibration DACs)

Test Procedure

1. Remove any connections to the AF G front panel .

2. Reset the AFG:

*RST;*CLS Reset AFG and clear

status registers

Execute the AFG self-test:

*TST? Self-test command

Read the result. A "0" indicates that the test passed. A "1" indicates a

failure. Read the error que ue using the SYST:ERR ? command until the error message is "No error".

Agilent E1445A Service Manual Verification Tests 19

Funct ional Verification: Ref In/Marker Out Test

Description

The purpose of thi s te st is to check the Ref /S a mple In and Marker Ou t por ts. An external ref e renc e is c onne cted to the Ref/S a mple In port and sent to the Marker Out port.

Test Procedure

1. Reset the AFG:

*RST;*CLS Reset AFG and clear

Set up equipme nt a s shown in Fi gur e 2-1 :

status registers

Figure 2-1. Ref/Sample In Test Setup

3. Set up the AFG to output the external ref ere nc e to the "Marker Out"

port:

ROSC:SOUR EXT External ref osci ll ato r MARK:FEED "ROSC" Marker sour ce is RO SC INIT:IMM Initiate

Verify that the scope shows a 10 MH z squa rewave .

20 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

Functional Verification: Start Arm In Test

Description

The purpose of this test is to check the Start Arm In port. The "TRIG OUT" port of the Command Module is used to send a Sta r t Arm signal to the AFG.

Test Procedure

1. Reset the AFG:

*RST;*CLS Reset AFG and clear

Set up equipme nt a s shown in Fi gur e 2-2 :

status registers

Figure 2-2. Start Arm In Test Setup

3. Send the following comm a nds to the Command Module to output 0 V

to the "Trig Out" port:

*RST OUTP:EXT:STAT ON OUTP: EX T :SOUR IN T OUTP:EXT:LEV 1

Agilent E1445A Service Manual Verification Tests 21

Functional Verification: Start Arm In Test (cont’d)

Test Procedure (cont’d)

4. Set up the AFG to output a 1 MHz sinewav e, w ith an external S ta rt

Arm source:

FREQ 1E6; Set fre q to 1 MHz :VOLT 4VPP Set AFG amplitude ARM:LAY2:SO UR EXT External Star t Arm

INIT:IMM Initiate

Verify that no signal appears on the scope. Send the following

command to th e Co mm a nd Module to provide a Sta r t Arm signal to the AFG:

OUTP:EXT:LEV 0

Verify that a 1 MHz sinewave appea r s on the sc ope.

source

22 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

Functional Ve rification: G ate In Test

Description

The purpose of thi s te st is to check the gating function. The "TRIG OUT" port of the Command Module is use d to gate the output .

Test Procedure

1. Reset the AFG:

*RST;*CLS Reset AFG and clear

Set up the equipm e nt a s shown in Figure 2-3.

status registers

Figure 2-3. Gate In Test Setup

3. Send the following comm a nds to the Command M odule to enable the

"Trig Out" port:

*RST OUTP:EXT:STAT ON OUTP: EX T :SOUR IN T

Agilent E1445A Service Manual Verification Tests 23

Functional Verification: Gate In Test (cont’d)

Test Procedure (cont’d)

4. Set up the AFG to output a 1 MHz sinewave with an external gate

source:

TRIG:GATE:SOUR EXT; External gate source :TRIG:GATE:ST AT O N; Enable gate :FREQ 1E6; Set fre q to 1 MHz :VOLT 4VPP Set AFG amplitude INIT:IMM Initiate

Send the follow i ng c o mm and to the Comma nd Module to set th e

level at the "Trig Out" por t to 5 V. Verify that the scope shows a 1 MHz sinewave.

OUTP:EXT:LEV 0

Send the follow i ng c o mm and to the Comma nd Module to set th e

level at the "Trig Out" port to 0 V. Verify that the scope shows a DC signal.

OUTP:EXT:LEV 1

24 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

Funct ional Ve rifica tion: Output Relay Test

Description

The purpose of this te st is to check the output r e la y.

Test Procedure

1. Reset the AFG:

*RST;*CLS Reset AFG and clear

Set up equipme nt a s shown in Fi gur e 2-4 :

status registers

Figure 2-4. Output Relay Test Setup

3. Set up the AFG to output a 1 MHz sinewave:

FREQ 1E6; Set fre q to 1 MHz :VOLT 4VPP Set AFG amplitude INIT:IMM Initiate

Verify that a 1 MHz sinewave appea r s on the sc ope.

5. Disable the Output relay:

OUTP OFF

Verify that no signal appears on the scope.

Agilent E1445A Service Manual Verification Tests 25

Functional Verification

Example Progr am

This program pe rfor ms the Functional Verification Tests for the AF G . An Agilent E1405/E1406 Comm an d Module is requir e d f or this te st.

10! RE-STORE "FUNC_TEST" 20 COM @Afg,@Cmd_mod,INTEGER Done 30 ! 40 !--- ------- S e t u p I/O pa ths ---------50 ASSIGN @Afg TO 7091 0 60 ASSIGN @Cmd_mod TO 70900 70 ! 80 !---------- Initialize AFG & Comm and M odule ---------90 Reset_afg 100 ! 110 !Set up Command M odule ’ TRI G O UT’ port 120 OUTPUT @Cmd_m od;"*RST" 130 OUTPUT @Cmd_mod;"OUTP:EXT:STAT ON" 140 OUTPUT @Cmd_mod;"OUTP:EXT:SOUR INT" 150 ! 160 !---------- Perform tests ---------170 CLEAR SCREEN 180 PRINT "Agilent E1445A FUNCTIONAL VERIFICATION TESTS" 190 PRINT 200 ! 210 !Oscilloscope settings 220 PRINT "Set scope t o: 2 V/di v, . 02 usec/div" 230 PRINT 240 Wait_for_cont 250 ! 260 CALL Self_test !Self-Test 270 CALL Ref_in !Ref In/Marker Out Test 280 ! 290 !Oscilloscope settings 300 CLEAR SCREEN 310 PRINT "Set scope t o: 2 V/div, . 2 usec/div" 320 PRINT 330 Wait_for_cont 340 ! 350 CALL Start_arm !Start Arm In Test 360 CALL Gate_in !Gate In Test 370 CALL Output_ relay !Output Relay Test 380 ! 390 Quit: ! 400 Reset_afg 410 CLEAR SCREEN 420 DISP "Functional Tes ts compl et ed. " 430 END

(Continued on ne xt pa ge )

26 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

Functional Verification

Example Program (cont’d)

450 !---------- Subprogram s ---------460 SUB Reset_afg 470 COM @Afg,@Cmd_mod,INTEGER Done 480 OUTPUT @Afg ;"* RS T; *CLS" !Reset AFG and clear Status re gi ster 490 WAIT 1 500 SUBEND 510 ! 520 SUB Self_test 530 COM @Afg,@Cmd_mod,INTEGER Done 540 DIM Message$[255] 550 ! 560 Reset_afg 570 ! 580 CLEAR SCREEN 590 PRINT "SELF-TEST" 600 PRINT 610 ! 620 !Test connections 630 PRINT "Remove any connections from the E1445A front panel." 640 PRINT "Press ’Conti nue’ t o in itiat e Sel f -Te st." 650 PRINT 660 Wait_for_cont 670 ! 680 !Perform test 690 OUTPUT @Afg;"*TST?" !Self -test command 700 ENTER @Afg;Result !Get result 710 ! 720 IF Result=0 THEN 730 PRINT "Self-test passed." 740 ELSE 750 PRINT "Self-test failed." 760 PRINT "The following err or (s) occurred:" 770 REPEAT 780 OUTPUT @Afg;"SYST:ERR?" !Check for errors 790 ENTER @Afg;Message$ 800 PRINT " "&Message$ 810 UNTIL POS(Message$,"No error") 820 END IF 830 Wait_for_cont 840 SUBEND 850 ! 860 SUB Ref_in 870 COM @Afg,@Cmd_mod,INTEGER Done 880 !

(Continued on ne xt pa ge )

Agilent E1445A Service Manual Verification Tests 27

Functional Verification

Example Program (cont’d)

890 Reset_afg 900 ! 910 CLEAR SCREEN 920 PRINT "REF IN/MARKER OUT TEST" 930 PRINT 940 ! 950 !Test connections 960 PRINT "Connect Scope to ’Marker Out’ on the E1445A." 970 PRINT "Connect Command Module ’Clk Out’ to ’Ref/Sample In’ on the E14 45A." 980 PRINT 990 Wait_for_cont 1000 ! 1010 !Perform test 1020 OUTPUT @Afg;"ROSC:SOUR EXT" !External ref osc source 1030 OUTPUT @Afg;"MARK:FEED ""ROSC""" !Marker source is ’ROSC’ 1040 OUTPUT @Afg;"INIT:IMM" !Initiate 1050 ! 1060 PRINT "Verify th at the scope shows a 10 MHz squarewave." 1070 Wait_for_cont 1080 SUBEND 1090 ! 1100 SUB Start_arm 1110 COM @Afg,@Cm d_m od,INTEGER Don e 1120 ! 1130 Reset_afg 1140 ! 1150 CLEAR SCREEN 1160 PRINT "START ARM TEST" 1170 PRINT 1180 ! 1190 !Test connecti ons 1200 PRINT "Connect Sco pe t o th e E1445A Output." 1210 PRINT "Connect Com m and Module ’Trig Out’ to ’Start A rm In’ on th e E1445A." 1220 PRINT 1230 Wait_for_cont 1240 ! 1250 !Set Command Mo dul e’s ’ TR IG OUT’ to 0V (E1405 uses neg logic ) 1260 OUTPUT @Cmd_m od ;"O UTP :E XT: LEV 1" 1270 ! 1280 !Perform test 1290 OUTPUT @Afg;"FREQ 1E6;"; !Set freq to 1 MHz 1300 OUTPUT @Afg;":VOLT 4VPP" !Set amplitude 1310 OUTPUT @Afg;"ARM:LAY2:SOUR EXT" !Start Arm source is EXT 1320 OUTPUT @Afg;"INIT:IMM" !Initiate 1330 !

(Continued on ne xt pa ge )

28 Verificat ion Tes ts Agilent E1445A Serv ice Manu al

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