HP 83751A, 83752A,83752B, 83751A,83751B User Manual

User’s Guide

HP 83751A/B and HP 83752AlB Synthesized Sweepers

HP part number: Printed in USA

Serial Numbers.

83750-90004

March 1996

This manual applies directly to instruments with serial prefix

3610A

and

below.

This manual also applies to Ermware revision 2.0 and above. For Ermware revisions below 2.0 contact your nearest Hewlett-Packard service center for a Ermware upgrade.

Notice.

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

Hewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and Etness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

1400 Fountaingrove Parkway, Santa Rosa, CA 95403, USA

The HP 8375lA/B and HP Synthesized Sweepers

83752A/B

The HP 83751AA and HP

“sweepers” throughout this manual) provide continuous analog or digital stepped sweep capability. The HP 2 to 20 to 20 high power output (approximately + 17 sweepers are SCPI and for drop-in replacement of an HP 8350 sweep oscillator. The sweepers are designed for optimum use with HP 8757 scalar analyzers. For specillcation and option information, refer to Chapter 17, “Specilkations and Options,” in this manual.

This User’s Guide is written to provide operating information to the user who is comfortable with the front panel layout and basic operation of the sweeper. For installation and basic sweeper operation, refer to the HP

provided with your shipment.

GHz,

while the HP

GHz.

The “B” versions of both the HP 83751 and HP 83752 provide

83752A/B

S~thesized Sweepers Installation and Quick Start Guide,

83752A/B

HP-II3

programmable, with HP 8350 HP-IB mnemonics

synthesized sweepers (referred to as

83751A/B

provides a frequency range of 10 MHz

provides a frequency range of

dBm

maximum leveled power). The

83751A/B

and

. . .

111

The Synthesized Sweeper at a Glance

The following Egure and accompanying text explain some features of the sweeper.

pg425ab

The Synthesized Sweeper

1. The

(m)

are used to save and subsequently recall sweeper operating parameters from one of nine nonvolatile register locations.

2. The line POWER switch turns the sweeper to either on or standby.

3. The Marker keys allow selection of up to ten markers to be set anywhere within the current frequency range. Marker A measurements are made using these keys as well.

4. The Modulation keys allow selection of pulse, AM, or FM modulation.

6. The SWEEP OUT BNC connector provides voltage proportional to the sweep ranging from 0 V et the start of a sweep at the end of the sweep, regardless of sweep width.

6. The Automatic

[AK INI

connector is used as the feedback path to the sweeper when its RF output power level is being leveled externally.

7. The Power keys allow selection of the RF output power level of the sweeper, as well as other power related functions, such as Automatic Level Control

[ALC

MODE 0) key is used to select

the method used to regulate the sweeper output power level. Either internal leveling or external leveling [with a diode, power meter, or source module] can be selected. Additional equipment is required when external leveling is used.

and

(m)

level

Control voltage input

IALCI.

The

keys

to’+10

6. The date entry keys are used to enter and/or modify various sweeper parameters. The @ key cancels all or part of an erroneous parameter entry before it has been terminated. The terminator keys rightmost column of keys) are used to choose the units for the entered parameter as well as to terminate the oarameter entry. The

a, 0,

used to increase or decrease a parameter in predetermined steps.

9. The toggle the RF output power on and off.

and

(-SIZE)

(RF

ON/OFF) key is used to

[the

keys are

10. The RF OUTPUT connector mates with

a female standard instruments. The connector metes with a type-N male connector on option instruments. The RF OUTPUT connector will be found on the rear panel of sweepers with option

APC-3.5mm

lE4.

precision connector on

1ED

11. The front panel knob is used to increase

or decrease active parameters under the pointers, and is used in manual frequency and power sweeps.

12. The displays show the current values of sweeper parameters as well as the status of many of the sweeper functions. The left-hand display shows the current frequency status, whether it be swept or CW. The right-hand display shows current marker, modulation end sweep status parameters when they are selected, as well as the current output power level. The annunciators that appear below the parameters are only visible when their associated function is active. For example, the

STEP annunciator will only be visible when

operating in stepped sweep mode.

13. The Frequency keys are used to set the

various frequency parameters for the sweeper. Swept frequency selections include Start/Stop,

CWSpan

and Marker 1 + Marker 2 functions. Continuous Wave also be selected for- outputting single frequencies.

14. The

(w)

the instrument into a known state. There are two preset modes: the factory mode, and a user-defined mode.

15. The

(m)

of some of the kevs. When vou

(m)

the sweeper performs the function printed in

blue above the key.

key changes the function

key and then press

ICWl

mode may

key is used to put

mess

the

enother

key,

Sweeper rear panel features are depicted and described in detail in Chapter 7,

“Front/Rear Panel” in this manual.

In This Book

This book is divided into two sections: the task reference and the dictionary reference. These sections are subdivided into chapters. The task reference

section (identified by light blue tabs) provides step-by-step instructions for many of the tasks that you perform with your sweeper. The chapters in the task reference section are as follows:

Chapter 1

Chapter 2

Chapter 3

“Performing the Operator’s Check, )) contains a procedure for

assuring you that your instrument is operating correctly.

“Externally Leveling the Sweeper, )) provides the steps necessary to externally level your sweeper with detectors/couplers/splitters, power meters, and source modules.

“Generating a Stepped Sweep,” explains how to set up the instrument to generate a stepped sweep.

Chapter 4 “Generating a Millimeter Signal,” illustrates the setups for

using a millimeter head with your option

Chapter 5

Chapter 6

The dictionary reference section (identified by dark blue tabs) provides information about instrument features and functions. Information is divided into chapters as follows:

“Creating User Flatness Arrays,” explains how to create user flatness correction arrays, which calibrate the power level at a remote test port.

“Operating a Master/Slave Setup, ’ shows the steps necessary to configure two sweepers for two-tone measurement capabilities.

1EE

sweeper.

Chapter 7

Chapter 8

Chapter 9 “Marker Keys,

“Front/Rear Panel, ’ contains entries that explain different aspects of the sweeper front and rear panel. (For example, you turn to this chapter for information on the sweepers various connectors).

“Instrument State Keys,” explains the functions of the keys in the Instrument State group.

”

explains the functions of the keys in the

Markers group.

Chapter 10

“Modulation Keys,’ explains the functions of the keys in the

Mod group.

Chapter 11

Chapter 12

Chapter 13

Chapter 14

Chapter 15

Chapter 16

Chapter 17

Chapter 18

“Frequency Keys,” explains the functions of the keys in the

Frequency group.

“Sweep Keys,” explains the functions of the keys in the

Sweep group.

“Power Keys, ” explains the functions of the keys in the

Power group.

“Entry Keys,” explains the functions of the keys in the Entry

group.

“Special Functions,

explains the various selections in the

”

special functions menu, which is accessed by selecting

SPECIAL.

“Error Messages,” contains lists of the error messages that

might be generated during use of the instrument.

“Specifications and Options,” contains a list of the sweeper’s warranted performance specifications and typical operating parameters, as well as the various mechanical, electrical, warranty, and documentation options that are available.

“Safety and Regulatory information, ’ contains required regulatory and safety information that is not included elsewhere in the instrument documentation.

Vii

Certification

Hewlett-Packard Company certihes that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.

Regulatory

Information.

The “Safety and Regulatory Information” chapter contains regulatory information.

. . .

Vlll

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option,

either repair or replace products which prove to be defective. For warranty service or repair, this product must be returned to a service

facility designated by Hewlett-Packard. Buyer shall prepay shipping charges to Hewlett-Packard and Hewlett-Packard shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Hewlett-Packard from another country.

Hewlett-Packard warrants that its software and Hewlett-Packard for use with an instrument will execute its programming instructions when properly installed on that instrument. Hewlett-Packard does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modihcation or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD 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. HEWLETT-PACKARD SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

fumware

designated by

Assistance

Product maintenance agreements and other customer assistance agreements

are available

Fbr

any assistance, contact your nearest

Ome.

Refer

for

Hewlett-Packard products.

Haolett-Packard

to the list of Sales and Service 0me.s

Sales and Service

the following page.

Hewlett-Packard Sales and Service Offices

IN THE UNITED STATES California

Hewlett-Packard Co. 1421 South Manhattan Ave

PO.

Box 4230 Fullerton, CA 92631 17141 999-6700

Hewlett-Packard Co. 301 E. Evelyn Mountain View, CA 94039 14151

694-2000

Colorado

iewlett-Packard

24 Inverness Place, East Englewood, CO 80112

3031

649-5000

Co.

Georgia

iewlett-Packard 2000 South Park Place ?O.

Box 105005

Atlanta, GA 30339

Co.

4041 955-1500

:llinois

iewlett-Packard Co.

j201 Tollview IoIling

3121

Drive Meadows, IL 60008

255-9800

Yew Jersey

iewlett-Packard

120 W. Century Road

laramus,

201 I

265-5000

Co.

NJ 07653

rexas

hewlettPackard

130 E. Campbell Rd.

hchardson,

2141 231-6101

Co.

TX 75081

IN AUSTRALIA

Hewlett-Packard Australia Ltd. 31-41 Joseph Street Blackburn, Victoria 3130 895-2895

IN CANADA

Hewlett-Packard 17500 South Service Road

Trans.Canada

Kirkland, 15141 697-4232

[Canada]

Highway

Quebec H9J 2X8

Ltd.

IN FRANCE

Hewlett-Packard France

F-91947 Les Orsey

161 907-78-25

Ulis Cedex

IN GERMAN FEDERAL REPUBLIC

Hewlett-Packard Vertriebszentrale Frankfurt Berner Strasse 117 Postfach 560 140

D-6000

Frankfurt 56

1061 II

50-04-I

GmbH

IN GREAT BRITAIN

Hewlett-Packard Ltd. King Street Lane

Winnersh, Wokingham

Berkshire

0734 784774

RGll 5AR

IN OTHER EUROPEAN COUNTRIES

Hewlett-Packard

Allmend

CH-8967

Widen [Zurich]

100411 57 31 21 11

[Schweizl

IN JAPAN

Yokogawa-Hewlett-Packard Ltd. 29-21 Takaido-Higashi, 3 Chome Suginami-ku Tokyo 168

1031 331-6111

IN PEOPLE’S REPUBLIC OF CHINA

China Hewlett-Packard, Ltd.

PO. Box 9610, Beijing

4th Floor,

Main Bldg. Shuang Yu Shu,

Beijing, PRC

256-6888

2nd

Watch Factory

Bei

San Huan Rd.

IN SINGAPORE

Hewlett-Packard Singapore

Pm.

Ltd. 1150 Depot Road Singapore 0410 273 7388

Telex HPSGSO Fax

1651

AS34209

2788990

IN TAIWAN

Hewlett-Packard Taiwan

8th Floor, Hewlett-Packard

Building 337 Fu Hsing North Road Taipei

1021 712-0404

IN ALL OTHER LOCATIONS

Hewlett-Packard Inter-Americas 3495 Deer Creek Rd. Palo Alto, California 94304

Safety Notes

The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument.

CAUTION

WARNING

The caution note denotes a hazard. It calls attention to a procedure

tihich,

if not correctly performed or adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a caution note until the indicated conditions are fully understood and met.

The warning note denotes a hazard. It calls attention to a procedure which, if not correctly performed or adhered to, could result in

iqiury

loss of life. Do not proceed beyond a warning note until the indicked conditions are fully understood and met.

Instrument

Instruction

Manual

The

CE93

Markings.

The instruction manual symbol. The product is marked with this symbol when it is necessary for the user to refer to the instructions in the manual.

mark shows compliance with European Community 1993 standards.

The CSA mark is the Canadian Standards Association safety mark.

The

&Ml-A

mark stands for Industrial Scientific and Medical Group 1. Class A.

xii

General Safety Considerations

WARNING

CAUTION

Before this

instrummt

switched on, make sure it has been properly grounded through the protective conductor of the ac power cable to a socket outlet provided with protective earth contact.

This is a Safety Class I product (provided with a protective earthing ground incorporated in the power cord). Any interruption of the protective (grounding) conductor, inside or outside the instrument, or disconnection of the protective earth terminal can result in personal injury.

No operator serviceable parts inside the instrument. Refer servicing to

qualified personnel. To prevent electrical shock, do not remove covers. Any adjustments or service procedures that require operation of the instrument with protective covers removed should be performed only by trained service personnel.

For continued protection against fire hazard, replace line fuse only with the same type and rating (F

6.3A/250V).

The use of other fuses or

material is prohibited.

If this instrument is used in a manner not specihed by Hewlett-Packard Co.,

the protection provided by the instrument may be unpaired.

CAUTION

Always use the three-pronged ac power cord supplied with this instrument. Failure to ensure adequate earth grounding by using this cord may cause instrument damage.

This instrument has automatic selection input. Be sure the supply voltage is

within the speciEed range.

Xlll

. . .

How to Use This Guide

This guide uses the following conventions.

(FRONT-PANEL

KEY_)

SHIFT FUNCTION

ANNUNCIATOR

This represents a key physically located on the instrument.

This represents a shift function (blue text above front panel keys).

Text in this font represents FREQUENCY, MARKER/SWEEP/STATUS, and POWER displays.

Text in this font represents the annunciators that are displayed in the lower portion of the sweeper display.

Contents

Performing

To run the To run peak power-tracking To

check

you

If the self-test If the maximum leveled power

2. Externally Leveling the Sweeper

Leveling

External leveling with the option 1El See

also

Leveling

See

also

Leveling with millimeter-wave source modules

(option

See

also

the Operator’s Check

full

self-test

the maximum leveled power the output

have

problem

fails

with detectors/couplers/splitters

.....................

with

power meter

.....................

1EE

only)

.....................

................

power

.................

................

..............

check fails

..............

.........

step

.......

attenuator

l-3

1-5 1-6

l-8 l-10 l-10 l-11

2-3

2-6 2-6 2-7 2-8

2-9

2-11

Generating a Generating a

Using Using

Creating

Creating a user flatness array for use in a scalar analysis

millimeter heads with “B” model

(high power) sweepers ................

millimeter heads with “A” model

(standard power) sweepers

See also

set up the sweeper ...............

set up the power meter

start the user flatness cal

measurement

set up

Stepped Sweep Millimeter Signal

..............

.....................

User Flatness Arrays

user flatness array

..................

the sweeper

.............

............

...............

4-3 4-5

4-6

5-3 5-4 5-5 5-5

5-6 5-7

Contents-l

To set

To start the user flatness cal To reactivate the

Operating a

set up

See

also

set up

the master sweeper the

......................

the analyzer

the power meter

8757 system interface

Master/Slave

slave

sweeper

...............

Setup

.............

..............

..........

......

5-7

5-8

5-9

6-4 6-6 6-7

Front/Rear

Connectors

BNC

Panel

.....................

Connectors

Multi-pin Connectors

AUXILIARY HP-IB

.....................

SOURCE MODULE INTERFACE (Option

RF Output Connector

Display

......................

Frequency Display Marker/Sweep/Status Annunciators

HP-IB Lang/Address Switch

See

Knob

Also

.....................

.......................

Equivalent SCPI Commands

Line

POWER Switch

Power

Cables

Instrument

....................

State

.....................

.................

...............

INTERFACE

...............

.................

and Power

...................

................

Keys

............

Display

.............

............

.......

1EE

Only)

7-3 7-5 7-8

7-8 7-10 7-13 7-15 7-16 7-17 7-18

7-19

7-23 7-25 7-26 7-26 7-27

7-29

8-3

8-4

8-6

8-8

B-10

8-11

Contents-2

Marker

10.

Modulation Keys

11.

12.

Sweep Keys

Keys

(iziG)

........................

m (MKRa_l

(PULSE MODE

(AMMODEU

(FM MODE

ITIME) . . .

(TRIG MODE [SINGLE/TRIG)

........................

.......................

...................

....................

$1.

....................

....

....................

...............

...................

9-4 9-7 9-8

10-4

10-6

10-7

11-4 11-6 11-8

11-9 11-10 11-12

12-4

12-7

12-10

13.

Power Keys

14.

Entry

(POWER LEVEL]

@OWER/SWEEP) [ALC

MODE 3) . . . . . . . . . . . . . . . . . . . .

(FLTNEss ON/OFF_) . . . . . . . . . . . . . . . . . . .

....................

...................

Keys

Q)a @EEiz)

......................

Number Pad Keys Unit

(j-ON/OFF)

......................

*+. ENTRY OFF

PEgK

.......................

Keys

.....................

......................

.....................

.......................

..................

Contents-3

13-3 13-5 13-7

13-10

14-3 14-4 14-5 14-6 14-7

14-8 14-9

14-10

15.

Special

l- CWCFAUTO

2 - CW PEAKNG . . . . . . . .

3 - SWPTIME AUTO . . . . .

4 - STEP SWPTIME . . . . ,

5 - SWPTIME

6 - ATT COUPLING . . . . .

7 - ATT SETTING . . . . . .

8 9 -

10 - V/GHz

11- V/GHz OFFSET . . . . .

12-PWRMETERTY

13-PWRMETERAD

14 -

15 - LANGUAGE . . . . . . .

16 - FW REVISION . . . . . .

17 -

18 - DP DEFIN : : : ‘. ‘. ‘. ‘. ’ .

19 - CONTROL MODE . . . .

21-

Functions

ROSC

AUTO

SOURCE : : : : : :

SENSITIVITY . . . .

*SECURITY

FULL

. . . . . .

LLIM . . . .

SCALE . . . . .

. . . . . .

SELFTST . . . . .

...........

............

...........

15-6

15-7

15-8

15-9 15-10

15-11 15-12 15-13 15-14 15-15 15-16 15-17 15-18 15-19 15-20 15-21

15-22

15-26 15-27 15-28

16. Error

The Error/Event Queue Error numbers

Error SCPI Error

Contents-4

Messages

................

....................

Messages List

Messages

Command Error Execution Error Device-specific Error Query Error

Instrument Block Bus

Control Errors Parsing and Compatibility Errors Diagnostics and Internal Hardware Errors

Hardware Configuration Errors

Calibration Routine Errors Loops Miscellaneous Hardware Dependent Errors

Specific

Transfer Errors

Unlocked Errors

.................

................

...................

..................

................

....................

Error

................

Self-test

Messages

...............

Errors

..............

.............

...............

.........

..........

...........

......

16-3

16-4

16-5 16-7

16-7 16-13 16-19 16-21

16-23 16-23 16-24 16-25 16-28 16-32 16-32

16-33 16-35 16-36

17.

Specifications and

Specifications Frequency

Range Timebase Stability

Mode

Stepped Ramp (Analog) Bandswitch Points

RF Output

Maximum Minimum Settable Resolution Accuracy and Flatness

Power Sweep

Power Slope

External User Source Match

Spectral Purity

Harmonics (at max leveled power) Subharmonics Non-harmonic Spurious Residual

Modulation

Pulse AM FM

General

Compatibility : : : : Programming Master/Slave (two-tone) Measurements Environmental Warmup Time Power Dimensions Weight

Options

Electrical Options

Option 1El - Add Output Option lE4 - Rear Panel RF Output

Options

....................

.....................

......................

.................

....................

Sweep Mode

Sweep

.................

.....................

Leveled

Power (25 f5

Power

....................

...................

Leveling

Flatness

(Level)

.................

Correction

...................

...............

FM (0.05 to 15 kHz

.....................

......................

.......................

................

...................

..................

Requirements

................

....................

......................

.................

...............

Mode

..............

...............

..............

...............

Step

............

“C)

.........

..........

bandwidth)

Attenuator

.......

........

17-3 17-4 17-4 17-4 17-4 17-5 17-5 17-5 17-7 17-7 17-8 17-8 17-8 17-9 17-9

17-9

17-9 17-10 17-11 17-11

....

17-11 17-11 17-12 17-13 17-13 17-13 17-14 17-15 17-15

17-15 17-15

17-16

17-16 17-17 17-17 17-18 17-19 17-19

....

17-19 17-19

Contents-5

Option lE5 - Add

Option

Cable

1ED

1EE - Source

....................

Mechanical Options

Option 1CM -

Option

1CP - Rack AX2 -

Warranty Options

Option

W30 - Two

Service Option Option

W50 W52 -

Service Option

W54 -

Documentation Options

High

Type-N RF

Stability Timebase

Output

Connector

Module Connector and Extension

................

Rack

Mount Kit without Handles

Mount Kit with Handles

Portable Handle and Front-panel

.................

Additional Rears Return-to-HP

...................

Five Five

Year Year

Return to

Return-to-HP Calibration

...................

Five

Year MIL-STD

Calibration

..............

Option OB2 - Extra Operating Documentation Option

Certification Options

Option 1BN - Certification Option

OB3 - Service

................

1BP -

Certification with Data

Documentation

............

......

Repair

.......

.....

....

Cover

Service

...

. .

17-19

17-20 17-20 17-20 17-20 17-20 17-21

17-21 17-21

17-21

17-22 17-22

17-22

17-22 17-22

17-22

18.

Safety and

Regulations and Licensing

Safety

Index

Contents-6

Notice

for

Information

Statement

Regulatory

Germany:

Compliance

Information

Noise

..................

Environmental Conditions Ventilation Requirements

Cleaning Instructions

..............

Declaration

..............

.............

..............

...............

........

18-3

18-3 18-8 18-8 18-8 18-9 18-9

Figures

l-l. The UNLEV Annunciator Location ............. l-7

l-2. Connections for Checking Output Power ..........

2-l.

ALC Circuit Externally Leveled ..............

2-2. Typical Diode Detector Response at 25

2-3. Leveling with a Power Meter ...............

2-4. Millimeter-wave Source Module Leveling ..........

2-5. Millimeter-wave Source Module Leveling Using a Microwave

Ampliher ......................

4-1. Millimeter-wave Source Module Leveling ..........

4-2. Millimeter-wave Source Module Leveling Using a Microwave

Amplifier ......................

5-1. Creating a User Flatness Array ......... .....

5-2. Scalar Measurement System Setup ............

6-l.

Master/Slave Setup ...................

7-l.

Sweeper Connectors - Front Panel .............

7-2. Sweeper Connectors - Rear Panel .............

7-3. Auxiliary Interface Connector ...............

7-4. HP-B Connector and Cable ................

7-5. Interface Signals of the Source Module Connector ......

7-6. Sweeper Display ............... .....

7-7. Sweeper Display and LED Annunciators ..........

7-8. HP-B Address Switch Settings ..............

7-9. Instrument Language Switch Settings ...........

7-10. Clear Register Contents Settings .............

7-l 1. The Sweeper Line POWER Switch .............

7-12. Power Cable and Line (Mains) Plug Part Numbers ......

8-l.

Instrument State Group .................

9-l.

The Markers Group ...................

10-l. The Modulation Group ...................

11-l. The Frequency Group ..................

12-1. The Sweep Group ....................

13-1. The Power Group ....................

14-1. The Entry Group ....................

15-1. The Instrument Group ..................

17-l. Typical Swept Frequency Accuracy (100 ms sweep, ramp

mode) .......................

17-2. Typical Maximum Available Power ............

“C

.........

l-8

2-3 2-5 2-7 2-9

2-10

4-4

4-6

5-3 5-6

6-3

7-3 7-4 7-8

7-10

7-13

7-16

7-19

7-23

7-24 7-24

7-27

7-30

8-2

9-2 10-2 11-2 12-2 13-2 14-2 15-2

17-6

17-7

Contents-7

Contents

17-3. Typical Phase Noise (10 17-4. Dimensions

.......................

GHz

Carrier)

...........

17-12 17-17

Contents-8

l%bles

7-l.

Pin Description of the Auxiliary Interface

8-l.

Factory Preset Conditions 14-1. Step Sizes 15-1. Special Functions for the HP 83750 Series Sweepers 15-2. FM Sensitivity When Using Source Modules

.......................

................

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7-9

8-4

14-3

15-4

15-19

Contents-9

Performing the Operator’s

Check

Performing the Operator’s Check

The operator’s check consists of a series of tasks that, when completed, will either assure you that your instrument is operating correctly, or will help to point to problem areas if it is not. The operator’s check performance to specifications.

The operator’s check should be performed on a weekly basis, or whenever the integrity of the sweeper is in question.

To perform the operator’s check, the following tasks should be performed, in order:

1. Run the full self-test.

2. Run peak power-tracking.

3. Check the maximum leveled power.

4. Check the output power.

does

not ensure

l-2

To run the full self-test

Attention!

All external cables [including HP-IB and BNC cables) must be disconnected from the sweeper prior to running the full self-test. Failure to do so may cause self-test failures or lock-ups.

1. Disconnect all external cables prior to running the self-test.

2. Activate the FULL SELFTST special function by pressing the following keys on the sweeper:

The message that appears in the MARKER/SWEEP/STATUS display is one of the following:

Full self-test has not been performed since the last time the line power was turned on.

Full self-test has been performed and passed all tests.

Full self-test has been performed, and test XXXXXX was either the only test that failed, or was the most significant failure.

3. Press the

While the self-test

(jj)

key again to initiate the self-test routine.

routine is running, a

M++I,,I.~ i t. ++s+

appear in the MARKER/SWEEP/STATUS display.

message

wfll

l-3

Performing the Operator’s Check

To run the full self-test

4. When the self-test routine is

mushed,

a message will appear in the

MARKER/SWEEP/STATUS display. If the message does not say

“Ful 1

Ted PHASED,”

refer to the section entitled “If You Have a

Problem” at the end of this chapter.

The full self-test is actually a series of tests performed to check different instrument functions. If the sweeper fails just one test, the display shows the title of the failed test. If the instrument fails more than one test, the test title shown is the most signilicant failure.

1-4

lb run peak power-tracking

1. Before running peak power-tracking, make sure the RF OUTPUT is either connected in a 50 0 system, or has a load on it, such as a power sensor or attenuator.

CAUTION

For optimum power at all frequencies, do not run peak power-tracking with a millimeter head connected to the sweeper.

Press (PRESET)

Cm)

P&W .

The MARKER/SWEEP/STATUS display shows the progression of the sweep as the instrument adjusts the power-tracking.

When you run peak power-tracking (or autotracking), the instrument

optimizes its output power over the sweeper’s full frequency range by tracking the output

NOTE

Peak power tracking takes approximately 1 to 3 minutes to complete, and can be aborted by pressing

(EEFi],

if necessary.

titer

with the RF source output.

1-5

lb check the maximum leveled power

1. Before checking maximum leveled power, make sure the RF OUTPUT is either connected in a 50 61 system, or has a load on it, such as a power sensor or attenuator.

2. Press [PRESET).

3. Press [POWER LEVEL) and enter the specified maximum leveled power for your instrument. (For an HP < 2

GHz.)

83752B,

set the power to the

specikation

for

83751N33752A

HP 837518” HP

837528”

< 2

GHz

Option

1El

GHz

[step attenuatorl, reduce by 1

+lO dBm +17 dBm

+16 dBm +17 dBm

dB.

4. Make sure the UNLEV annunciator is not lit at any time. The UNLEV annunciator is located in the POWER display area. (See Figure l-l.)

5. Press

cm)

to change the sweep time to 2 seconds.

6. Press [SINGLE TRIG] and make sure the UNLEV annunciator does not come on at any point during the sweep. (If the annunciator comes on, it indicates the instrument is unleveled.) The UNLEV annunciator is located in the POWER display area. (See Figure l-l.)

1-6

Performing the Operator’s Check

To check the maximum leveled power

000 0 000 0 00000

:a::

For HP

The HP

7. Press the following keys to set a sweep range of 2 power level of 17

0 0 000 0 00000 0 0 000 0 00000

0’0

Figure l-l. The UNLEV Annunciator location

83752B

Instruments Only.

sweepers have a power specification that is split at 2

dBm

(or 16

000000

dBm

for instruments with option

GHz

’

to 20

UNLEV ANNUNCLATOR

tiEARS

pg426ob

GHz.

GHz

and a

1El):

(START_) 0 @iqGqLq)

[POWER

8. Press @NGLE on at any point during the sweep. (If the annunciator comes on, it

indicates the instrument is unleveled.) The UNLEV annunciator is located in the POWER display area. (See Figure l-l.)

mm) 117)

TRIG_)

(or

[16)) [GHz/dB(mL)

and make sure the UNLEV annunciator does not come

l-7

+ 252 hidden pages

HP 83751A, 83752A,83752B, 83751A,83751B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual