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About this Manual

We've added this manual to the Agilent website in an effort to help you support
your product. This manual is the best copy we could find; it may be incomplete
or contain dated information. If we find a more recent copy in the future, we will
add it to the Agilent website.

Support for Your Product

Agilent no longer sells or supports this product. Our service centers may be able
to perform calibration if no repair parts are needed, but no other support from
Agilent is available. You will find any other available product information on the
Agilent Test & Measurement website, www.tm.agilent.com.

HP References in this Manual

This manual may contain references to HP or Hewlett-Packard. Please note that
Hewlett-Packard's former test and measurement, semiconductor products and
chemical analysis businesses are now part of Agilent Technologies. We have
made no changes to this manual copy. In other documentation, to reduce
potential confusion, the only change to product numbers and names has been in
the company name prefix: where a product number/name was HP XXXX the
current name/number is now Agilent XXXX. For example, model number
HP8648A is now model number Agilent 8648A.
User's Guide

HP 83751A/B and
HP 83752AlB
Synthesized Sweepers
HP part number: 83750-90004
Printed in USA March 1996
Serial Numbers.
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.

@Copyright Hewlett-Packard Company 1993, 1996
All Rights Reserved. Reproduction, adaptation, or translation without prior
written permission is prohibited, except as allowed under the copyright laws.
1400 Fountaingrove Parkway, Santa Rosa, CA 95403, USA
The HP 8375lA/B and HP 83752A/B
Synthesized Sweepers

The HP 83751AA and HP 83752A/B synthesized sweepers (referred to as
"sweepers" throughout this manual) provide continuous analog or digital
stepped sweep capability. The HP 83751A/B provides a frequency range of
2 to 20 GHz, while the HP 83752A/B provides a frequency range of 10 MHz
to 20 GHz. The "B" versions of both the HP 83751 and HP 83752 provide
high power output (approximately + 17 dBm maximum leveled power). The
sweepers are SCPI and HP-II3 programmable, with HP 8350 HP-IB mnemonics
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 83751A/B and
HP 83752A/B S~thesized Sweepers Installation and Quick Start Guide,
provided with your shipment.

...
111
The Synthesized Sweeper at a Glance

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

pg425ab

The Synthesized Sweeper

iv
1. The (m) and (m) k e y s 6. The date entry keys are used to enter 12. The displays show the current values of
are used to save and subsequently recall and/or modify various sweeper parameters. sweeper parameters as well as the status of
sweeper operating parameters from one of The @ key cancels all or part of an many of the sweeper functions. The left-hand
nine nonvolatile register locations. erroneous parameter entry before it has been display shows the current frequency status,
terminated. The terminator keys [the whether it be swept or CW. The right-hand
2. The line POWER switch turns the sweeper
rightmost column of keys) are used to choose display shows current marker, modulation end
to either on or standby.
the units for the entered parameter as well sweep status parameters when they are
3. The Marker keys allow selection of up to as to terminate the oarameter entry. The selected, as well as the current output power
ten markers to be set anywhere within the a, 0, and (-SIZE) keys are level. The annunciators that appear below
current frequency range. Marker A used to increase or decrease a parameter in the parameters are only visible when their
measurements are made using these keys as predetermined steps. associated function is active. For example, the
well. STEP annunciator will only be visible when
9. The (RF ON/OFF) key is used to
operating in stepped sweep mode.
4. The Modulation keys allow selection of toggle the RF output power on and off.
pulse, AM, or FM modulation. 13. The Frequency keys are used to set the
10. The RF OUTPUT connector mates with
various frequency parameters for the sweeper.
6. The SWEEP OUT BNC connector provides a female APC-3.5mm precision connector on
Swept frequency selections include Start/Stop,
voltage proportional to the sweep ranging standard instruments. The connector metes
CWSpan and Marker 1 + Marker 2
from 0 V et the start of a sweep to'+10 V with a type-N male connector on option 1ED
functions. Continuous Wave ICWl mode may
at the end of the sweep, regardless of sweep instruments. The RF OUTPUT connector will
also be selected for- outputting single
width. be found on the rear panel of sweepers with
frequencies.
option lE4.
6. The Automatic level Control voltage input 14. The (w) key is used to put
[AK INI connector is used as the feedback 11. The front panel knob is used to increase
the instrument into a known state. There are
path to the sweeper when its RF output or decrease active parameters under the
two preset modes: the factory mode, and a
power level is being leveled externally. pointers, and is used in manual frequency and
user-defined mode.
power sweeps.
7. The Power keys allow selection of the RF 15. The (m) key changes the function
output power level of the sweeper, as well of some of the kevs. When vou mess the
as other power related functions, such as (m) key and then press enother key,
Automatic Level Control IALCI. The the sweeper performs the function printed in
[ALC MODE 0) key is used to select blue above the key.
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.

Sweeper rear panel features are depicted and described in detail in Chapter 7,
"Front/Rear Panel" in this manual.

V
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 "Performing the Operator's Check, )) contains a procedure for
assuring you that your instrument is operating correctly.
Chapter 2 "Externally Leveling the Sweeper, )) provides the
steps necessary to externally level your sweeper with
detectors/couplers/splitters, power meters, and source
modules.
Chapter 3 "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 1EE sweeper.
Chapter 5 "Creating User Flatness Arrays," explains how to create user
flatness correction arrays, which calibrate the power level at
a remote test port.
Chapter 6 "Operating a Master/Slave Setup, ' shows the steps necessary
to configure two sweepers for two-tone measurement
capabilities.
The dictionary reference section (identified by dark blue tabs) provides
information about instrument features and functions. Information is divided
into chapters as follows:
Chapter 7 "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).
Chapter 8 "Instrument State Keys," explains the functions of the keys
in the Instrument State group.
Chapter 9 "Marker Keys, " explains the functions of the keys in the
Markers group.

vi
Chapter 10 "Modulation Keys,' explains the functions of the keys in the
Mod group.
Chapter 11 "Frequency Keys," explains the functions of the keys in the
Frequency group.
Chapter 12 "Sweep Keys," explains the functions of the keys in the
Sweep group.
Chapter 13 "Power Keys, " explains the functions of the keys in the
Power group.
Chapter 14 "Entry Keys," explains the functions of the keys in the Entry
group.
Chapter 15 "Special Functions, " explains the various selections in the
special functions menu, which is accessed by selecting
m SPECIAL.
Chapter 16 "Error Messages," contains lists of the error messages that
might be generated during use of the instrument.
Chapter 17 "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.
Chapter 18 "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 fumware designated by
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.
L IMITATION OF W ARRANTY

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.
E XCLUSIVE R EMEDIES
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.

ix
Assistance

Product maintenance agreements and other customer assistance agreements
are available for Hewlett-Packard products.
Fbr any assistance, contact your nearest Haolett-Packard Sales and Service
Ome. Refer to the list of Sales and Service 0me.s on the following page.

X
Hewlett-Packard Sales and Service Offices
IN THE UNITED STATES IN AUSTRALIA IN JAPAN
California Hewlett-Packard Australia Ltd. Yokogawa-Hewlett-Packard Ltd.
Hewlett-Packard Co. 31-41 Joseph Street 29-21 Takaido-Higashi, 3 Chome
1421 South Manhattan Ave Blackburn, Victoria 3130 Suginami-ku Tokyo 168
PO. Box 4230 895-2895 1031 3 3 1 - 6 1 1 1
Fullerton, CA 92631
17141 999-6700 IN CANADA
Hewlett-Packard [Canada] Ltd. IN PEOPLE'S REPUBLIC
Hewlett-Packard Co. 17500 South Service Road OF CHINA
301 E. Evelyn Trans.Canada Highway China Hewlett-Packard, Ltd.
Mountain View, CA 94039 Kirkland, Quebec H9J 2X8 PO. Box 9610, Beijing
14151 694-2000 15141 697-4232 4th Floor, 2nd Watch Factory
Main Bldg.
Colorado IN FRANCE S h u a n g Y u S h u , Bei S a n H u a n R d .
iewlett-Packard C o . Hewlett-Packard France Beijing, PRC
24 Inverness Place, East F-91947 Les Ulis C e d e x 256-6888
Englewood, CO 80112 Orsey
3031 649-5000 161 907-78-25
IN SINGAPORE
Georgia IN GERMAN FEDERAL Hewlett-Packard Singapore
iewlett-Packard C o . REPUBLIC Pm. L t d .
2000 South Park Place Hewlett-Packard GmbH 1150 Depot Road
?O. B o x 1 0 5 0 0 5 Vertriebszentrale Frankfurt Singapore 0410
Atlanta, GA 30339 Berner Strasse 117 273 7388
4041 955-1500 Postfach 560 140 Telex HPSGSO AS34209
D-6000 Frankfurt 56 Fax 1651 2788990
:llinois 1061 II 50-04-I
iewlett-Packard Co.
j201 Tollview Drive IN GREAT BRITAIN IN TAIWAN
IoIling Meadows, IL 60008 Hewlett-Packard Ltd. Hewlett-Packard Taiwan
3 1 2 1 255-9800 King Street Lane 8th Floor, Hewlett-Packard
Winnersh, Wokingham Building
Yew Jersey Berkshire RGll 5AR 337 Fu Hsing North Road
iewlett-Packard C o . 0734 784774 Taipei
120 W. Century Road 1021 712-0404
laramus, N J 0 7 6 5 3 IN OTHER EUROPEAN
2 0 1 I 265-5000 COUNTRIES
Hewlett-Packard [Schweizl AG IN ALL OTHER LOCATIONS
rexas Allmend 2 Hewlett-Packard Inter-Americas
hewlettPackard C o . CH-8967 Widen [Zurich] 3495 Deer Creek Rd.
130 E. Campbell Rd. 100411 57 31 21 11 Palo Alto, California 94304
hchardson, T X 7 5 0 8 1
2141 231-6101

x i
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.
The caution note denotes a hazard. It calls attention to a procedure tihich,
CAUTION
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
WARNING
which, if not correctly performed or adhered to, could result in iqiury or
loss of life. Do not proceed beyond a warning note until the indicked
conditions are fully understood and met.

Instrument Markings.

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

!
A

The CE93 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

Before this instrummt is switched on, make sure it has been properly
WARNING
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
WARNING
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
WARNING
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.,
CAUTION
the protection provided by the instrument may be unpaired.

Always use the three-pronged ac power cord supplied with this instrument.
CAUTION
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
CAUTION
within the speciEed range.

...
Xlll
How to Use This Guide

This guide uses the following conventions.
(FRONT-PANEL KEY_) This represents a key physically located on the
instrument.
SHIFT FUNCTION This represents a shift function (blue text above
front panel keys).
Text in this font represents FREQUENCY,
MARKER/SWEEP/STATUS, and POWER displays.
ANNUNCIATOR Text in this font represents the annunciators that
are displayed in the lower portion of the sweeper
display.
Contents

1. Performing the Operator's Check
To run the full self-test ................ l-3
To run peak power-tracking .............. 1-5
To check the maximum leveled power ......... 1-6
To check the output power .............. l-8
If you have a problem ................. l-10
If the self-test fails ................. l-10
If the maximum leveled power check fails ....... l-11

2. Externally Leveling the Sweeper
Leveling with detectors/couplers/splitters ....... 2-3
External leveling with the option 1El step attenuator . 2-6
See also ..................... 2-6
Leveling with a power meter .............. 2-7
See also ..................... 2-8
Leveling with millimeter-wave source modules
(option 1EE only) ................ 2-9
See also ..................... 2-11

3. Generating a Stepped Sweep

4. Generating a Millimeter Signal
Using millimeter heads with "B" model
(high power) sweepers . . . . . . . . . . . . . . . . 4-3
Using millimeter heads with "A" model
(standard power) sweepers . . . . . . . . . . . . . . 4-5
See also . . . . . . . . . . . . . . . . . . . . . 4-6

5. Creating User Flatness Arrays
Creating a user flatness array ............. 5-3
To set up the sweeper ............... 5-4
To set up the power meter ............. 5-5
To start the user flatness cal ............ 5-5
Creating a user flatness array for use in a scalar analysis
measurement .................. 5-6
To set up the sweeper ............... 5-7

Contents-l
To set up the analyzer ............... 5-7
To set up the power meter .......... 5-8
To start the user flatness cal ............... 5-8
To reactivate the HP 8757 system interface ...... 5-9

6. Operating a Master/Slave Setup
To set up the master sweeper ............. 6-4
To set up the slave sweeper .............. 6-6
See also ...................... 6-7

7. Front/Rear Panel
Connectors ..................... 7-3
BNC Connectors ................. 7-5
Multi-pin Connectors ............... 7-8
AUXILIARY INTERFACE ............ 7-8
HP-IB ..................... 7-10
SOURCE MODULE INTERFACE (Option 1EE Only) 7-13
RF Output Connector ............... 7-15
Display ...................... 7-16
Frequency Display ................. 7-17
Marker/Sweep/Status and Power Display ....... 7-18
Annunciators ................... 7-19
HP-IB Lang/Address Switch ............. 7-23
See Also ..................... 7-25
Knob ....................... 7-26
Equivalent SCPI Commands ............ 7-26
Line POWER Switch ................ 7-27
Power Cables .................... 7-29

Instrument State Keys
..................... 8-3
..................... 8-4
..................... 8-6
..................... 8-8
..................... B-10
..................... 8-11

Contents-2
9. Marker Keys
(iziG) . . . . . . . . . . . . . . . . . . . . .
. . . 9-4
m . . . . . . . . . . . . . . . . . . . . . . . . 9-7
(MKRa_l . . . . . . . . . . . . . . . . . . . .
. . . 9-8

10. Modulation Keys
(PULSE MODE 8) . . . . . . . . . . . . . . . . . . . 10-4
(AMMODEU . . . . . . . . . . . . . . . . . . . . 10-6
(FM MODE $1. . . . . . . . . . . . . . . . . . . . . 10-7

11.
............... . .... 11-4
................... 11-6
................... 11-8
................... 11-9
................... 11-10
................... 11-12

12. Sweep Keys
ITIME) . . . .................... 12-4
(TRIG MODE Q) .................... 12-7
[SINGLE/TRIG) .................... 12-10

13. Power Keys
( P O W E R LEVEL] .................... 13-3
@OWER/SWEEP) ................... 13-5
[ALC MODE 3) . . . . . . . . . . . . . . . . . . . . 13-7
(FLTNEss ON/OFF_) . . . . . . . . . . . . . . . . . . . 13-10

14. Entry Keys
Q)a ....................... 14-3
@EEiz)
...................... 14-4
Number Pad Keys .................. 14-5
Unit Keys ..................... 14-6
(j-ON/OFF)
...................... 14-7
*+. ...................... 14-8
ENTRY OFF ..................... 14-9
PEgK ....................... 14-10

Contents-3
15. Special Functions
l- CWCFAUTO . . . . . . . ........... 15-6
2 - CW PEAKNG . . . . . . . . ........... 15-7
3 - SWPTIME AUTO . . . . . ........... 15-8
4 - STEP SWPTIME . . . . , ........... 15-9
5 - SWPTIME LLIM . . . . . ........... 15-10
6 - ATT COUPLING . . . . . ........... 15-11
7 - ATT SETTING . . . . . . ........... 15-12
8 - ROSC AUTO ........... 15-13
9 - ROSC SOURCE : : : : : : ........... 15-14
10 - V/GHz SCALE . . . . . . ........... 15-15
11- V/GHz OFFSET . . . . . ........... 15-16
12-PWRMETERTY . . . . ........... 15-17
13-PWRMETERAD . . . . ........... 15-18
14 - FM SENSITIVITY . . . . ........... 15-19
15 - LANGUAGE . . . . . . . ........... 15-20
16 - FW REVISION . . . . . . ........... 15-21
17 - *SECURITY ........... 15-22
18 - DP DEFIN : : : `. `. `. `. ' . ........... 15-26
19 - CONTROL MODE . . . . ........... 15-27
21- FULL SELFTST . . . . . ............ 15-28

16. Error Messages
The Error/Event Queue . . . . . . . . . . . . . . . . 16-3
Error numbers . . . . . . . . . . . . . . . . . . . . 16-4
Error Messages List ................. 16-5
SCPI Error Messages ................ 16-7
Command Error . . . . . . . . . . . . . . . . . . . 16-7
Execution Error . . . . . . . . . . . . . . . . . . 16-13
Device-specific Error . . . . . . . . . . . . . . . . 16-19
Query Error . . . . . . . . . . . . . . . . . . . . 16-21
Instrument Specific Error Messages ......... 16-23
Block Transfer Errors ............... 16-23
Bus Control Errors ................ 16-24
Parsing and Compatibility Errors .......... 16-25
Diagnostics and Self-test Errors ........... 16-28
Internal Hardware Errors .............. 16-32
Hardware Configuration Errors ........... 16-32
Calibration Routine Errors ............. 16-33
Loops Unlocked Errors ............... 16-35
Miscellaneous Hardware Dependent Errors ...... 16-36

Contents-4
17. Specifications and Options
Specifications .................... 17-3
Frequency ..................... 17-4
Range ...................... 17-4
Timebase Stability ................. 17-4
CW Mode .................... 17-4
Stepped Sweep Mode ............... 17-5
Ramp (Analog) Sweep Mode ............ 17-5
Bandswitch Points ................. 17-5
RF Output ..................... 17-7
Maximum Leveled Power (25 f5 "C) ......... 17-7
Minimum Settable Power .............. 17-8
Resolution .................... 17-8
Accuracy and Flatness ............... 17-8
Power Sweep ................... 17-9
Power Slope ................... 17-9
External Leveling ................. 17-9
User Flatness (Level) Correction .......... 17-9
Source Match ................... 17-10
Spectral Purity ................... 17-11
Harmonics (at max leveled power) .......... 17-11
Subharmonics ............... .... 17-11
Non-harmonic Spurious .............. 17-11
Residual FM (0.05 to 15 kHz bandwidth) ....... 17-12
Modulation ..................... 17-13
Pulse ...................... 17-13
AM ....................... 17-13
FM ....................... 17-14
General ................ 17-15
Compatibility : : : : ............... 17-15
Programming ................... 17-15
Master/Slave (two-tone) Measurements ....... 17-15
Environmental .................. 17-16
Warmup Time .................. 17-16
Power Requirements ................ 17-17
Dimensions .................... 17-17
Weight ...................... 17-18
Options ...................... 17-19
Electrical Options ................. 17-19
Option 1El - Add Output Step Attenuator . .... 17-19
Option lE4 - Rear Panel RF Output ........ 17-19

Contents-5
Option lE5 - Add High Stability Timebase ..... 17-19
Option 1ED . Type-N RF Output Connector ...... 17-19
Option 1EE - Source Module Connector and Extension
Cable .................... 17-20
Mechanical Options ................ 17-20
Option 1CM - Rack Mount Kit without Handles . . 17-20
Option 1CP - Rack Mount Kit with Handles .... 17-20
Option AX2 - Portable Handle and Front-panel Cover 17-20
Warranty Options ................. 17-21
Option W30 - Two Additional Rears Return-to-HP
Service ................... 17-21
Option W50 - Five Year Return to HP Repair Service 17-21
Option W52 - Five Year Return-to-HP Calibration
Service ................... 17-21
Option W54 - Five Year MIL-STD Calibration Service 17-21
Documentation Options .............. 17-22
Option OB2 - Extra Operating Documentation ... 17-22
Option OB3 - Service Documentation ....... 17-22
Certification Options ................ 17-22
Option 1BN - Certification ............ 17-22
Option 1BP - Certification with Data ....... 17-22

18. Safety and Regulatory Information
Regulations and Licensing .............. 18-3
Notice for Germany: Noise Declaration ........ 18-3
Safety Information .................. 18-8
Statement of Compliance .............. 18-8
Environmental Conditions ............. 18-8
Ventilation Requirements .............. 18-9
Cleaning Instructions ............... 18-9

Index

Contents-6
Figures

l-l. The UNLEV Annunciator Location . . . . . . . . . . . . . l-7
l-2. Connections for Checking Output Power . . . . . . . . . . l-8
2-l. ALC Circuit Externally Leveled . . . . . . . . . . . . . . 2-3
2-2. Typical Diode Detector Response at 25 "C . . . . . . . . . 2-5
2-3. Leveling with a Power Meter . . . . . . . . . . . . . . . 2-7
2-4. Millimeter-wave Source Module Leveling . . . . . . . . . . 2-9
2-5. Millimeter-wave Source Module Leveling Using a Microwave
Ampliher . . . . . . . . . . . . . . . . . . . . . . 2-10
4-1. Millimeter-wave Source Module Leveling . . . . . . . . . . 4-4
4-2. Millimeter-wave Source Module Leveling Using a Microwave
Amplifier . . . . . . . . . . . . . . . . . . . . . . 4-6
5-1. Creating a User Flatness Array . . . . . . . . . . . . . . 5-3
5-2. Scalar Measurement System Setup . . . . . . . . . . . . 5-6
6-l. Master/Slave Setup . . . . . . . . . . . . . . . . . . . 6-3
7-l. Sweeper Connectors - Front Panel . . . . . . . . . . . . . 7-3
7-2. Sweeper Connectors - Rear Panel . . . . . . . . . . . . . 7-4
7-3. Auxiliary Interface Connector . . . . . . . . . . . . . . . 7-8
7-4. HP-B Connector and Cable . . . . . . . . . . . . . . . . 7-10
7-5. Interface Signals of the Source Module Connector . . . . . . 7-13
7-6. Sweeper Display . . . . . . . . . . . . . . . . . . . . 7-16
7-7. Sweeper Display and LED Annunciators . . . . . . . . . . 7-19
7-8. HP-B Address Switch Settings . . . . . . . . . . . . . . 7-23
7-9. Instrument Language Switch Settings . . . . . . . . . . . 7-24
7-10. Clear Register Contents Settings . . . . . . . . . . . . . 7-24
7-l 1. The Sweeper Line POWER Switch . . . . . . . . . . . . . 7-27
7-12. Power Cable and Line (Mains) Plug Part Numbers . . . . . . 7-30
8-l. Instrument State Group . . . . . . . . . . . . . . . . . 8-2
9-l. The Markers Group . . . . . . . . . . . . . . . . . . . 9-2
10-l. The Modulation Group . . . . . . . . . . . . . . . . . . . 10-2
11-l. The Frequency Group . . . . . . . . . . . . . . . . . . 11-2
12-1. The Sweep Group . . . . . . . . . . . . . . . . . . . . 12-2
13-1. The Power Group . . . . . . . . . . . . . . . . . . . . 13-2
14-1. The Entry Group . . . . . . . . . . . . . . . . . . . . 14-2
15-1. The Instrument Group . . . . . . . . . . . . . . . . . . 15-2
17-l. Typical Swept Frequency Accuracy (100 ms sweep, ramp
mode) . . . . . . . . . . . . . . . . . . . . . . . 17-6
17-2. Typical Maximum Available Power . . . . . . . . . . . . 17-7

Contents-7
Contents

17-3. Typical Phase Noise (10 GHz Carrier) . . . . . . . . . . . 17-12
17-4. Dimensions . . . . . . . . . . . . . . . . . . . . . . . 17-17

Contents-8
l%bles

7-l. Pin Description of the Auxiliary Interface . . . . . . . . . 7-9
8-l. Factory Preset Conditions . . . . . . . . . . . . . . . . 8-4
14-1. Step Sizes . . . . . . . . . . . . . . . . . . . . . . . 14-3
15-1. Special Functions for the HP 83750 Series Sweepers . . . . 15-4
15-2. FM Sensitivity When Using Source Modules . . . . . . . . 15-19

Contents-9
1

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 does not ensure
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.

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 (jj) key again to initiate the self-test routine.
While the self-test routine is running, a M++I,,I.~ i t. ++s+ message wfll
appear in the MARKER/SWEEP/STATUS display.

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

2. 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 titer with the RF source output.

NOTE
Peak power tracking takes approximately 1 to 3 minutes to complete, and can be aborted by pressing
(EEFi], if necessary.

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 83752B, set the power to the specikation for
< 2 GHz.)

H P 83751N33752A +lO dBm
HP 837518" +17 dBm
H P 837528"
< 2 GHz +16 dBm
> 2 GHz +17 dBm

* Option 1El [step attenuatorl, reduce by 1 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 m @ 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

\ UNLEV
ANNUNCLATOR
' tiEARS

0 0 0 0 0 0 0 0 0 0 0
0
0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0
:a:: -* 0 0 0'0 0 0 0 0 0 0 0

pg426ob

Figure l-l. The UNLEV Annunciator location

For HP 83752B Instruments Only.
The HP 83752B sweepers have a power specification that is split at 2 GHz.
7. Press the following keys to set a sweep range of 2 GHz to 20 GHz and a
power level of 17 dBm (or 16 dBm for instruments with option 1El):
(START_) 0 @iqGqLq)
[POWER mm) 117) (or [16)) [GHz/dB(mL)
8. Press @NGLE 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.)

l-7
To check the output power

1. Connect the equipment as shown.

POWER METER SYNTHESIZED SWEEPER

I SENSOR

POWER SENSOR ADAPTER
RF OUTPUl

pg427ob

Figure 1-2. Connections for Checking Output Power

2. Press (PRESET_).
3. Press ccw) (ZiJ CGHz/dB(mL).
4. Press POWER LEVEL) and enter the specified power for the CW frequency
you set. Refer to the following table. Terminate the power level entry by
pressing (GHz/dB(mZ).

Instrument Maximum leveled
Power Specification

H P 83751Ml3752A" +I0 dBm
HP 837518" +I7 dBm
HP 837528"
< 2 GHz +I6 dBm
1 2 GHz +I7 dBm

1 * Option IEI lstep attenuetorl, reduce by 1 dB.1

l-8
Performing the Operator's Check
To check the output power

5. Set the power meter calibration factor to the value listed on the power
sensor that corresponds to the frequency you set.
6. Verify that the measured output power meets the instrument specification.
l If the measured value is less than the specihed power, turn the front
panel knob until the value measured is at least the speciEed power level.
l Make sure that the UNLEV annunciator doesn't light. (If the annunciator
does light, this indicates an unleveled condition.)
7. Repeat steps 3 through 6 for the following setting(s):
2.5 GHz
1.5 GHz - for HP 83752AA instruments only
50 MHz - for HP 83752A/B instruments only

l-9
If you have a problem

If you have a problem while performing the operator's check, check the
following list of commonly encountered problems. If the problem you have
encountered is not here, contact the nearest Hewlett-Packard office for
assistance.

If the self-test fails

The self-test has failed if the message that appears when it is done, is
anything except Full Test. PHSSED.
q Make sure all external cables are disconnected from the sweeper and run
the self-test again.
q If the test still fails, send the instrument to an HP service center for repair,
including a description of the failed test and any other error messages.

N O T E
If you need to ship your sweeper, remove the front handles (if so equipped) and use the original
packaging (or comparable).

l-10
Performing the Operator's Check

If the maximum leveled power check fails

q Make sure that the RF OUTPUT connector was terminated before the peak
power-tracking sequence was run, and before the maximum leveled power
check.
q Make sure the power you entered in steps 2 and 5 of the maximum leveled
power check procedure are correct for your particular instrument.
q If the measured value of power in step 6 of "To check the output power" is
mo?-e than the specified power, turn the front panel knob counterclockwise
until the value measured equals the specified power. Note the sweeper's
front panel reading and use this value to repeat the maximum leveled
power check.
q If the check still fails, contact the nearest Hewlett-Packard office for
assistance.

NOTE
If you need to ship your sweeper, remove the front handles (if so equipped) and use the original
packaging (or comparablel.

l-11
2

Externally Leveling the
Sweeper
Externally Leveling the Sweeper

In externally leveled operations, the output power from the sweeper is
detected by an external sensor. The output of this detector is returned to the
leveling circuitry, and the output power is automatically adjusted to keep
power constant at the point of detection.

2-2
Leveling with detectors/couplers/splitters

1. Connect the equipment as shown in Figure 2-1.

SYNTHESIZED SWEEPER

DIRECTIONAL COUPLER
OR POWER SPLITTER)

LEVELED OUTPUT

pg417ab

Figure 2-1. ALC Circuit Externally leveled

2. Press [ALC MODE 8) repeatedly until the MARKER/SWEEP/STATUS display
shows HLC= Diode. Note that the EXT ALC annunciator is lit.
3. Enter the coupling factor by selecting m EXT CAL and then entering
the desired number.

2-3
Externally Leveling the Sweeper
leveling with detectorslcouplerslsplitters

NOTE
The coupling factor (in dB) is defined by the equation
leveled power (P lev) - detected power (P det). Refer to Figure `2-1 for
locations of P lev and P det. After the coupling factor has been entered, the front panel knob
may be used to fine tune the displayed power to equal the actual leveled output power (P levl.

Figure 2-l illustrates a typical setup for external leveling. When externally
leveled, the power level feedback is taken from the external negative detector
input rather than the internal detector. This feedback voltage controls the
ALC system to set the desired RF output.
Figure 2-2 shows the input power versus output voltage characteristics for
typical HP diode detectors. From the chart, the leveled power at the diode
detector input resulting from any external level voltage setting may be
determined. The ALC feedback voltage present at the output of the detector
must be between -0.2 mV and -0.5 V. For a typical HF' diode detector, this
corresponds to a detector input of approximately -35 dE%m to +5 dBm. (See
Figure 2-2.)

2-4
Externally Leveling the Sweeper
leveling with detectors/couplers/splitters

10 v +20 dBV

+lO dBV
+6 dBV

1.0 v 0 dBV

-10 dBV

100 mv -20 dBV

-30 dBV

10 mv -40 dBV

-50 dBV

1 mv -60 dBV

-66 dBV
-70 di3V

.I mv -80 dBV
-40 -30 0 +10 +20 f30

- D E T E C T O R I N P U T P O W E R , dBM
pg431ob

Figure 2-2. Typical Diode Detector Response at 25 `C

2-5
Externally leveling the Sweeper
leveling with detectors/couplers/splitters

External leveling with the option 1El step attenuator

Some external leveling applications require low output power from the
sweeper. The sweeper automatically uncouples the attenuator from the ALC
system for all external leveling points. Note that in external leveling modes,
the UNCPLD annunciator is lit.
For example, leveling the output of a 30 dB gain amplifier to a level of
- 10 dBm requires the output of the sweeper to be around -40 dBm when
leveled. At some frequencies this level is beyond the range of the ALC
modulator alone. If so, the UNLEV warning message is displayed. Inserting 40
dB of attenuation results in an ALC level (power level + attenuator value) of
0 dBm, which is well within the range of the ALC. This gives a margin for
AM or other functions that vary the power level.
The ALC level should be greater than or equal to -10 dBm for "A" model
sweepers (standard power), and -5 dBm for "B" model sweepers (high
power). Adjust the attenuator so that the ALC level is within the specified
power range of your sweeper. For an "A" model sweeper, this is achieved by
using attenuation equal to the tens digit of output power. Example: for a
desired sweeper output power of -43 dBm; do the following:
1. Press CSHIFT) SPECIAL (YJ
2. Set the attenuator to 40 dB: press c40) [GHz/dB(mL)

See also
To obtain flatness corrected power refer to the chapter entitled "Creating User
Flatness Correction Arrays, n later in this manual.

2-6
Leveling with a power meter

Leveling with a power meter is similar to leveling with a diode detector.
1. Set up the equipment as shown in Figure 2-3. Be sure to set the power
meter to the correct manual range mode for the output power setting at
which you are leveling.

LEVELED OUTPUT

=j-$g;pLER

POWER
METER

POWER SENSOR

I
pg418ab

Figure 2-3. leveling with a Power Meter

2. Press (ALC MODE $J repeatedly until the MARKER/SWEEP/STATUS display
shows ALC= Pcllwr Met.w-. Note that the EXT ALC annunciator is lit.
3. Select m EXT CAL @ CGHz/dB(mL). (If a directional coupler is used,
enter the coupling factor of the coupler.)

2-7
Externally leveling the Sweeper
leveling with a power meter

NOTE
The coupling factor is defined by the equation
leveled power (P lev) - detected power (P det). Refer to Figure 2-1 for
locations of P lev and P det. After the coupling factor has been entered, the front panel knob
may be used to fine tune the displayed power to equal the actual leveled output power fP lev).

4. If the power meter and the sweeper power setting don't agree, set the
coupling factor step size to 10 dR and then use the a Q) keys to adjust
the coupling factor up or down until the power meter and the sweeper
power setting agree.
5. Select the sweep tune by pressing I`TIME) and then entering the desired
sweep rate.

NOTE
Due to the settling time required by power meters, it is recommended to use a 40 second sweep rate.

Unlike detector leveling, power meter leveling provides calibrated power out
of the leveled RF port.