Agilent Technologies 85037A Service manual

Operating and Service Manual

Agilent Technologies

85037A/B

Precision Detectors

Serial Numbers

This manual applies directly to Agilent 85037A/B detectors with serial

number 00101 and above.

Part Number: 85037-90013

Printed in USA

October 2002

Supersedes November 2001

Notice.

The information contained in this document is subject to change without notice.

Agilent Technologies makes no warranty 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 incidental

or consequential damages in connection with the furnishing, performatnce, or use of this

material.

Hewlett-Packard to Agilent Technologies Transition

This documentation supports a product that previously shipped under the

Hewlett-Packard company brand name. The brand name has now been changed to Agilent

Technologies. The two products are functionally identical, only our name has changed. The

document still includes references to Hewlett-Packard products, some of which have been

transitioned to Agilent Technologies.

Certification

Agilen

hnologies certies that this pro duct met its published

specications at the time of shipmen

tfrom

the factory

. Agilen

further certies that its calibration measuremen

ts are traceable to the

United States National Institute of Standards and T

echnology

,to

the extent allow

ed b

y the Institute's calibration facilit y

,and to the

calibration facilities of other In

ternational Standards Organization

mem

bers.

DOCUMENT

TION

WARRANTY

THE MA

TERIAL CONT

AINED IN THIS DOCUMENT IS

VIDED \AS IS," AND IS SUBJECT TO BEING CHANGED,

WITHOUT NOTICE, IN FUTURE EDITIONS. FUR

THER, TO

THE MAXIMUM EXTENT PERMITTED BY APPLICABLE

W, A

GILENT DISCLAIMS ALL WARRANTIES, EITHER

EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL

AND ANY INF

ORMA

TION CONT

AINED HEREIN, INCLUDING

BUT NOT LIMITED TO THE IMPLIED W

ARRANTIES OF

MERCHANT

ABILITY AND FITNESS F

OR A P

TICULAR

PURPOSE. A

GILENT SHALL NOT BE LIABLE F

ERR

ORS OR F

OR INCIDENT

AL OR CONSEQUENTIAL

DAMA

GES IN CONNECTION WITH THE FURNISHING,

USE, OR PERF

ORMANCE OF THIS DOCUMENT OR ANY

INF

ORMA

TION CONT

AINED HEREIN. SHOULD A

GILENT

AND THE USER HA

VE ASEP

ARA

TE WRITTEN A

GREEMENT

WITH W

ARRANTY TERMS CO

VERING THE MA

TERIAL IN

THIS DOCUMENT THA

TCONFLICT WITH THESE TERMS,

THE W

ARRANTY TERMS IN THE SEP

ARA

TE A

GREEMENT

WILL CONTROL.

Assistance

duct maintenanc

eagr

ements and other customer assistance

agr

ements ar

eavailable for A

gilent pr

ducts.

For any assistanc

e, c

ontact your ne

arest A

gilent T

echnologies Sales

and Servic

e Oc

e. R

efer to Table 6- , \Contacting A

gilent" in

Chapter 6.

iii

Safety Notes

The follo

wing safet

ynotes are used throughout this manual.

amiliarize y

ourself with eachof the notes and its meaning before

operating this instrumen

Caution

denotes ahazard. It calls atten

tion to apro cedure that, if

not correctly performed or adhered to, could result in damage to or

destruction of the instrumen

t. Do not pro ceed bey

ond a

aution

sign

til the indicated conditions are fully understoodand met.

arning

Warning

denotes a hazard. It calls attention to aprocedure which, if

not correctly performed or adhered to, could result in injury or loss

of life. Do not proceed beyond a

warning

note until the indicated

conditions are fully understood and met.

Instruction Man

ual

The

instruction man

ual

sym

bol. The product is

mark

ed with this sym

bol when it is necessary

for the user to refer to the instructions in the

man

ual.

ICES/NMB-001

This ISM device complies with Canadian

ICES-001.

Cet appareil ISM est conforme ala norme

NM -001 du Canada.

Contents

1. General Information

tro duction ............. . . . . . 1-1

Pro duct Description .... . . . . . . . ..1-1

Instrumen

ts Co

vered b

yThis Man

ual ......1-1

Accessories ............... . . . 1-2

Equipmen

tRequired but Not Supplied . . . . . . 1-2

Recommended Test Equipmen

t.........1-2

Reection or T

ransmission Measuremen

ts ....1-2

CDetection ......... . ......1-2

Specications and Supplemental Characteristics ..1-2

2. Installation

Safet

yConsiderations ...... . . . .....2-1

Initial Inspection ............. . . . 2-1

Preparation for Use ...............2-2

Electrostatic Disc

harge (ESD) ... . .....2-2

Static-Safe W

or station ...........2-2

Static-Safe Practices ............2-2

er Requirements .............2-3

Cable Lead Iden

tication ...... . . . . . 2-3

Mating Connectors ..............2-3

Connecting an 85037A/B ...........2-3

Mating aPrecision 3.5 mm Connector to an SMA

Connector .............. . 2-4

Electrical P

erformance ..........2-4

Operating En

vironment . . . . . . .......2-6

Storage and Shipmen

t....... . . . . . . . 2-6

Environmen

t. ............ . . . . 2-6

aging ...... . ...........2-6

Returning a Detector for Service . . . . . . . . . 2-7

3. Operation

Operating Theory . . . . . . . . . . . . . . . 3-1

AC Detection . . . . . . . . . . . . . . . . 3-1

DC Detection . . . . . . . . . . . . . . . . 3-1

Features . . . . . . . . . . . . . . . . . . . . 3-2

Connector Torque Values . . . . . . . . . . . . 3-2

Operator's Chec . . . . . . . . . . . . . . . . 3-3

Operating Mo des and Sp ecications . . . . . . . 3-3

Dynamic Accuracy . . . . . . . . . . . . . . 3-3

Frequency Resp onse . . . . . . . . . . . . . 3-3

Measurement System Conguration . . . . . . . . 3-4

Contents-1

DC Detection Measurements . . . . . . .....3-5

Enabling the DC Detection Mo de ....... 3-5

Ma ing Accurate DC Measurements . . . . . . 3-5

Operation . . ............ . . . 3-5

Zeroing an 85037A/B .... . . . ... . . 3-5

C Detection Measurements . . . . . . .....3-6

Ma ing Accurate A

CMeasuremen

ts ......3-6

Characterizing the Detector (P

erforming aP

wer

Calibration) . . . . . . ..........3-7

4. P

erformance T

ests

tro duction . . . . . . . ...........4-1

Equipmen

tRequired .............4-1

Return Loss at aNominal

10 dBm .... . . . 4-2

Description .. . . . . . ..........4-2

Pro cedure ................. . 4-3

requency Response at aNominal

10 dBm .. . . 4-5

Description ........ . ........4-5

Pro cedure . . . . ..............4-6

Conguring the System ..... . . . . . . . 4-6

Measuring the Source ............ . 4-7

Measuring the Detector ............4-7

Computing the Maxim

um Error . . . . ....4-8

Dynamic P

er Accuracy ......... . ..4-10

Description .................4-10

Pro cedure ... . ..............4-10

First Alternate Dynamic P

er Accuracy ..... 4-11

Description .................4-11

Second Alternate Dynamic Po

er Accuracy ....4-12

Description ........ . . . ......4-12

Pro cedure .... . . . . . . . .......4-12

5. Adjustmen

tro duction ........... . . . . . ..5-1

Coarse Zero Adjustmen

t.............5-2

Description . . . . . . . . . . . ......5-2

Pro cedure ..... . ............ 5-2

eedthrough Nulling Adjustmen

t. . . . . . . . . 5-3

Description . . . . . . . . . . . . . . . . . 5-3

Pro cedure . . . . . . . . . . . . . . . . . . 5-3

6. Replaceable P

arts

Intro duction . . . . . . . . . . . . . . . . . . 6-1

Ordering P

arts . . . . . . . . . . . . . . . . . 6-1

Contents-

. Service

Error Messages ........... . . . . . . 7-1

Repair ... . . . . . . . . . . . . . ....7-1

Replacing the Detector . ...........7-2

Remo

ving the Co

ers . . . . . . . . . . . . . 7-2

Replacing the Cable Assembly (W1) . . . . . .7-3

A. Caring for Connectors

Visual Inspection .. . . . . . . . .......A-1

Cleaning . . ................A-1

Mec

hanical Inspection ........ . . . . . A-2

Index

Contents-3

Figures

2-1. Example of a Static-Safe W

or station ......2-2

2-2. Using Precision 7mm Connectors ....... 2-3

2-3. SMA and 3.5 mm Connector Cross-Sections and

SWR P

erformance .............2-5

3-1. Detector F

eatures ......... . . . . . 3-2

3-2. T

ypical Measurement Setup . . . .......3-4

4-1. Return Loss Setup ..............4-2

4-2. F

requency Response T

est Setup ..... . . . 4-5

4-3. F

requency Response Graph ... . ......4-9

4-4. Dynamic P

er Accuracy T

est Setup ......4-11

4-5. First Alternate Dynamic P

er Accuracy Test Setup 4-11

4-6. Second Alternate Dynamic P

er Accuracy T

est

Setup . . . ...............4-12

5-1. Coarse Zero/F

eedthrough Nulling Adjustmen

t. . 5-2

5-2. Coarse Zero Adjustmen

t.. . . . .......5-3

5-3. F

eedthrough Nulling Adjustmen

t........5-4

6-1. Detectors and Cable Mar

er Kit ........6-2

6-2. Mo dule Exc

hange Program . .........6-4

7-1. Remo

ving the Detector Co

ers ...... . ..7-2

7-2. Cable Connections ..............7-4

ables

1-1. Agilen

t 85037A Standard

. . . . . . .....1-3

1-2. Agilen

t85037B Specications

...... . . . 1-4

1-3. Supplemen

tal Characteristics ......... 1-5

1-4. Recommended T

est Equipmen

t. . . . . . . . . 1-6

4-1. Return Loss Equipmen

tTable . . . . . . . . . 4-3

4-2. F

requency Response Equipmen

able . . . . . . 4-6

4-3. W

or sheet . . . . . . . . . . . . . . . . . . 4-9

4-4. Additional Equipmen

t . . . . . . . . . . . . 4-12

4-5. T

est Record for 85037A . . . . . . . . . . . . 4-13

4-6. Test Record for 85037A Option 001 . . . . . . . 4-17

4-7. Test Record for 85037B . . . . . . . . . . . . 4-21

6-1. Miscellaneous Parts . . . . . . . . . . . . . . 6-2

6-2. Replaceable Parts and Accessories . . . . . . . 6-3

6-3. Contacting Agilent . . . . . . . . . . . . . . 6-5

Contents-4

General Information

Introduction

This man

ual con

tains information on operating, testing, and servicing

the Agilen

t 85037A and 85037B precision detectors. Figure 6-1 sho

the detectors and the supplied cable mar

er it.

Product Description

The Agilen

t85037A/B precision detectors are specically designed

for use with an Agilen

t8757D scalar net

or analyzer and are

not compatible with the Agilent 8757A/C/E, 8756, or 8755 scalar

net

or analyzers. These dual-dio de detectors ma

ybeused in either

Cor DC detection mo des. F

or impro

ed po

er measurement

accuracy v

ersus frequency

,eac

hAgilen

t 85037 series precision

detector includes detector-sp ecic frequency response data, stored in

an in

ternal EEPR

OM, whic

his automatically read b

y the 8757D.

When used in conjunction with the 8757D's in

ternal po

er calibrator

(Option 002), these detectors pro

vide the maximum absolute po

measuremen

taccuracy

Agilen

tDetector Connector T

ype

85037A T

ype-N (m)

85037A Option 001 Precision 7mm

85037 Precision 3.5 mm (m)

Instruments Co

ered by

This Manual

Eac

hdetector has aunique serial n

umber. The con

ten

ts of this

man

ual apply directly to detectors with serial n

bers listed on the

title page.

General Information 1-1

Accessories

able 6-2 lists accessories a

ailable for use with these detectors.

Equip ent Required

but Not Supplied

Recommended T

est

Equipment

able 1-4 lists the equipmen

trequired to test the detectors. Y

ysubstitute an

yequipmen

tthat meets the indicated critical

specications.

Reflection or

Transmission

Measurements

Reection and transmission measuremen

ts require the follo

wing

equipmen

One or more detectors.

An Agilen

t8757D scalar net

or analyzer.

One

of the follo

wing:

Adirectional bridge.

Adirectional coupler.

Asw

eep oscillator or syn

thesized sw

eeper.

or ratio measuremen

ts use:

Apo

er splitter or dual directional coupler.

CDetection

Cdetection requires the equipmen

tlisted abo

plus

either asignal

source capable of 27.778 Hz squarew

e amplitude mo dulation, or

an external mo dulator.

Specifications and

Supple ental

Characteristics

Table 1-1 and T

able 1-2 list detector specications whic

hare the

performance standards or limits against whic

ou can test the

device.

Table 1-3 lists supplemen

tal (typical, non-w

arranted) detector

characteristics.

1- General Information

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