Agilent 8568B Installation Guide

Notice

Hewlett-Packard to Agilent Technologies Transition

This documentation supports a product that previously shipped under the Hewlett­Packard 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.

Printed in USA March 2000

Installation and
Verification Manual

HP 8568B Spectrum

Analyzer

Includes Option 001, Option 400,
Option 462, and Option 857

HP Part No. 08568-90119
Printed in USA September 1993

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 fitness 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
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, 95403-1799, USA

Certification

Hewlett-Packard Company certifies 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.

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 firmware 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.

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 modification 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.

. . .
III

Assistance

Product wmintenance agreements and other customer assistance
agreements are available for

Pbr

any assistance, contact pour nearest

Service

Ome.

Hewlett-Rzckard

Hewlett-Fbckard

products.

Sales and

Safety Notes

Caution

Warning

Instruction

Manual

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

Caution denotes a hazard. It calls attention to a procedure that, if

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

Warning denotes a hazard. It calls attention to a procedure

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.

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.

iv

General Safety Considerations

Warning

Warning

Caution

Before this

properly grounded through the protective conductor of the ac
power cable to a socket outlet provided with protective earth
contact.

Any interruption of the protective (grounding) conductor, inside
or outside the instrument, or disconnection of the protective
earth terminal can result in personal injury.

There are many points in the instrument which can, if contacted,

cause personal injury. Be extremely careful.
Any adjustments or service procedures that require operation

of the instrument with protective covers removed should be
performed only by trained service personnel.

Before this

circuitry has been adapted to the voltage of the ac power source.

Failure to set the ac power input to the correct voltage could cause
damage to the instrument when the ac power cable is plugged in.

instrunwnt

instrument

is switched on, make sure it has been

is switched on, make sure its primary power

V

How to Use This Guide

This guide uses the

following

conventions:

HP 8568B Documentation Description

HP

8568B

HP 8568B Operating

and Programming

Installation

and Verification

Manual

Manual

Front-Panel Key] This represents a key physically located on the

instrument.

Screen Text

Included with the HP Model 8568B spectrum analyzer are manuals:
The Installation and Verification, the Operating and Programming
Manual, and the Performance Tests and Adjustments Manual.

HP part number 08568-90119
Contents: General information, installation, specifications,

characteristics, and operation verification.

HP part number 08568-90041
Contents: Manual and remote operation, including complete syntax

and command description.
pocket-sized Quick Reference Guide, HP part number 5955-8970.

This indicates text displayed on the instrument’s
screen.

Accopanying

this manual is the seperate,

HP

8568B

Performance Tests and

Adjustments Manual

HP 85680B RF Section

Troubleshooting and

Repair Manual

HP 85662A IF-Display

Section

Troubleshooting and

Repair Manual

HP part number 08568-90118
Contents: Electrical performance tests and adjustment procedures.

HP part number 85680-90137

Contents: RF section service information.

HP part number 85662-90085
Contents: IF-Display section service information.

vi

Contents

1. General Information

What You’ll Find in This Chapter ...........

Introducing the HP 8568B ...............

Safety

Accessories Supplied ................

Accessories Available ................

Options

Instruments Covered by This Manual ........

Calibration Cycle

HP-IB Address Selection ..............

Bench Operation

Electrostatic Discharge Information ..........

Static-Safe Accessories ...............

Routine Maintenance .................

Cleaning the Display ................

Cleaning the RF Section’s Fan Filter .........

Replacing the RF Section’s Battery .........

Ordering Information .................

Direct Mail Order System ..............

Direct Phone-Order System .............

Returning the Instrument for Service .........

Service lags

Original Packaging .................

Other Packaging

Sales and Service Offices ...............

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

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

Serial Numbers

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

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

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

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

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

l-l
l-2
l-2

l-2
l-5
1-6
l-7
1-7
l-9

l-9
l-9

l-10
l-11
1-12
1-12
1-13
1-13
1-18
1-18
1-18
1-19
1-19
1-19
1-21
l-22

2. Installation

What You’ll Find in This Chapter ...........

Safety

Preparation for Use

Initial Inspection

Operating Environment ...............

Power Requirements ................

To Install Standard Instruments ............

To Install Option 908 and 913 Instruments .......

To Install Option 010 Instruments ...........

To Set the HP-IB Address ...............

From the Front Panel ................

From the HP-IB Bus ................

From the HP-IB Address Switch

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

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

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

...........

2-l

2-l

2-3
2-3
2-3
2-3
2-4
2-7

2-13
2-20
2-20
2-20

2-20

Contents-l

3. Specifications

Introduction ..................... 3-l

Frequency ......................

Measurement Range ................ 3-l

Displayed Values ..................

Center Frequency ................. 3-l

Range ......................

Readout Accuracy ................

Frequency Span ..................

Range ......................

Full Span

Frequency Count ..................

Resolution .....................

Resolution Bandwidth ...............

Resolution Bandwidth (Option 462 6 dB Bandwidths)

Resolution Bandwidth (Option 462 Impulse

Bandwidths) .................

Bandwidth Shape .................

Stability ......................

Residual FM ...................

Spectral Purity ...................

Power-Line-Related Sidebands ...........

Amplitude ......................

Measurement Range ................

Amplitude Measurement Range ..........

Displayed Values ..................

Scale ......................

Accuracy .....................

Reference Lines Accuracy ..............

Dynamic Range ...................

Spurious Responses ................

Residual Responses ................

Gain Compression ................

Displayed Average Noise Level (Sensitivity) ....

Amplitude Uncertainty ................

Table Footnotes ...................

Marker ........................

Sweep ........................

Inputs ........................

INPUT

INPUT
outputs

CAL OUTPUT

1STLOOUTPUT : : : : : : : : : :

Options .......................

75 D Input Impedance, Option 001 ..........

400 Hz Power Line Frequency Operation, Option

General .......................

HP-IB Interface Functions ..............

Environmental ...................

Power Requirements ................

#l
#2

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

INPUT

Power Line Related Sidebands ...........

Temperature ...................

Altitude .....................

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

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

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

........

........

#l

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

400

.

3-l

3-l

3-l
3-2
3-2
3-2
3-2
3-3
3-3

3-3

3-4

3-4
3-4
3-5
3-5
3-5
3-5
3-6
3-6
3-6
3-6
3-6

3-6
3-7
3-7

3-7

3-7
3-8
3-8
3-9

3-11
3-12
3-12
3-13
3-13
3-13
3-14
3-14
3-14
3-14
3-14

3-14
3-15
3-15
3-16

3-16
3-16
3-16
3-16
3-16

Contents-2

Humidity

Operation

Storage
EM1
X-Rays

IF Section Serial Prefix 3004A and above

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

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

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

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

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

......

IF Section Serial Prefix 3001A and below
Warm-Up Time

Frequency Reference

Operation

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

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

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

Weight .......................

Dimensions

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

4. Characteristics

Frequency

Resolution
Stability

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

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

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

Drift .......................

Spectral Purity

Noise Sidebands

Amplitude

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

Average Noise Level
Log to Linear Switching

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

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

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

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

Frequency Response (Flatness) Uncertainty
Residual Responses
Third Order Intermodulation Distortion

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

.......

Inputs ........................

RF INPUTS

Isolation

LO Emission
VIDEO
IF INP
EXT TRIGGER
FREQ REFERENCE (IN)

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

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

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

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

INP

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

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

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

outputs .......................

Display Outputs
Recorder Outputs
SWEEP
VIDEO

PENLIFT

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

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

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

21.4 MHz IF OUTPUT
FREQ REFERENCE (OUT)
VIDEO OUT
IF OUT

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

PROBE POWER (front panel)

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

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

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

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

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

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

General .......................

Acoustic Noise Emission/ Geraeuschemession

Function Descriptions

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

Sweep .......................

Cathode Ray Tube

Instrument State Storage

Remote Operation

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

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

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

.....

......

.....

3-16
3-16
3-16
3-16
3-16
3-16
3-16
3-18
3-18
3-18
3-18
3-19

4-l
4-l
4-2
4-2
4-2
4-2
4-3
4-3
4-3
4-3

4-4

4-4

4-5

4-5
4-5
4-5

4-5

4-5

4-5

4-6

4-6

4-6

4-6

4-6

4-7

4-7

4-7

4-7

4-7

4-8

4-8

4-8

4-8

4-9

4-9

4-10
4-10
4-10

Contents-3

5. Operation Verification

What You’ll Find in This Chapter ...........

Test System Configuration
Equipment Connections
Program Loading
Program Operation
HP-IB Addresses
Error Messages

Test Descriptions

1. Input Attenuator Switching Uncertainty

2. IF Gain Uncertainty

3. Scale Fidelity (Log)

4. Scale Fidelity (Linear) ..............

5. Log Scale Switching Uncertainty .........

6. Resolution Bandwidths ..............

7. Impulse and Resolution Bandwidths (Opt. 462
Impulse Bandwidth)

8. Line Related Sidebands .............

9. Residual FM

10. RF Gain Uncertainty ..............

11. Sweep Time Accuracy ..............

12. Average Noise Level ..............

13. Residual Responses

14. Frequency Span Accuracy ............

15. Frequency Response ..............

16. Second Harmonic Distortion ...........

17. Third Order Intermodulation Distortion

18. Calibrator Output Amplitude Accuracy

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

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

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

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

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

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

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

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

.....

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

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

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

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

.....

......

5-l
5-5
5-5

5-7
5-7

5-9
5-10
5-10

5-11

5-12
5-13

5-14
5-15
5-16

5-17

5-18
5-19

5-20
5-21
5-22
5-23
5-24
5-25
5-26

5-27
5-28

Contents-4

Figures

l-l. HP 8568B with Accessories Supplied
1-2. AC Power Cables Available
l-3. Typical Serial Number Label
1-4. Static-Safe Workstation
1-5. Display Bezel Screws
l-6. Removing the Bottom Cover
1-7. Location of Al5 Controller Assembly
l-8. Location of Battery on Al5 Controller Assembly

1-9. Factory Packaging Materials for Each Section
2-l. Rear-Panel Cable Connections
2-2. Voltage Selector Board and Fuse
2-3. Removing the Handles and Trim
2-4. Removing the Information-Card Tray

2-5. Attach the Rack Mount Flanges
2-6. Voltage Selector Board and Fuse
2-7. Rear-Panel Cable Connections
2-8. Removing the Handles and Trim

2-9. Removing the Information-Card Tray
2-10. Attaching the Rack Handles and Flanges
2-l 1. Rear-Panel Cable Connections
2-12. Voltage Selector Board and Fuse
2-13. Attaching the Inner-Member Brackets
2-14. Slide Adapter for Non-HP System Rack Cabinets
2-15. Removing the Bottom Cover
2-16. Location of Al5 Controller Assembly
2-17. Address Switch (Shown in Factory Preset Position) . .
2-18. Address Switch Set to 4

3-l. Instrument Dimensions with Handles

3-2. Instrument Dimensions without Handles

4-l. Typical Spectrum Analyzer Resolution

4-2. Single Sideband Noise Normalized to 1 Hz BW versus

Offset from Carrier
4-3. Typical Sensitivity vs. Input Frequency
4-4. Typical Optimum Dynamic Range
5-l. Dual Bus (MTS) System Connection
5-2. Single Bus System Connection
5-3. RF Input and Calibration Controls

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

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

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

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

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

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

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

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

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

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

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

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

.........

........

...

.....

...........

...........

........

...........

...........

...........

........

.......

...........

........

...

........

........

.......

........

.......

..........

.........

..........

l-3
l-4

l-8
l-10
1-12
l-14
1-15
1-16
l-20

2-4
2-5
2-7
2-8

2-9
2-10
2-11
2-13
2-14
2-15
2-15
2-16
2-17
2-18
2-21
2-22
2-23
2-24
3-19

3-19

4-1

4-2

4-3

4-4

5-6

5-6

5-9

Contents.5

‘Ifibles

1- 1. Static-Safe Accessories .........

l-2. Factory Packaging Materials

l-3. Hewlett-Packard Sales and Service Offices
2-l. Decimal and Binary Address Codes

5-l. Tests Performed ............

5-2. Tests Not Performed ..........

5-3. Equipment Summary ..........

5-4. HP-IB Addresses ............

.......

...

......

......

......

......

...... 5-3

......

...... 5-4

......

l-11
l-20
l-23

2-25

5-4

5-9

Contents-6

General Information

1

What You’ll Find in
This Chapter

This chapter introduces you to the HP 8568B spectrum analyzer
and its options and accessories. Refer to Chapter 2 for information
on inspecting and installing the HP 8568B. Refer to Chapter 3 and
Chapter 4 for a complete listing of instrument specifications and
characteristics. Refer to Chapter 5 for Operation Verification.

Introducing the HP 8568B ............................

Safety
Accessories Supplied
Accessories Available

Options ...........................................

Instruments Covered by This Manual

Calibration Cycle
HP-IB Address Selection
Bench Operation

Electrostatic Discharge Information ..................

Static-Safe Accessories

Routine Maintenance

Cleaning the Display
Cleaning the RF Section’s Fan Filter

Replacing the RF Section’s Battery

Ordering Information

Direct Mail-Order System
Direct Phone-Order System

Returning the Instrument for Service ................

ServiceTags

Original Packaging
Other Packaging

Sales and Service Offices ............................

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

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

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

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

SerialNumbers

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

l-2
l-2
1-2
l-5
1-6
1-7
l-7
1-9
l-9

1-9
l-10
l-11
1-12
1-12
1-13
l-13
1- 18
1- 18
l-18
1-19
1-19
1-19
l-2 1
1-22

General Information

1-l

Introducing the HP 8568B

The HP 8568B spectrum analyzer is capable of measuring signals from

-135 dBm to
MHz. The HP 8568B is a complete, self-contained instrument that
requires only an external ac power source for operation. A set of ac
power cables, suitable for use in the country to which the instrument
is originally shipped, are included with the instrument.

+30

dBm over a frequency range of 100 Hz to 1500

Safety

Accessories Supplied

Before installing or operating this instrument, you should familiarize
yourself with the safety marking on the instrument and the safety
instructions in the manuals. The instrument has been manufactured
and tested in accordance with international safety standards.
However, to ensure safe operation of the instrument and personal
safety of the user, the cautions and warnings in the manuals must be
followed. Refer to the summary of the safety information located
near the front of this manual.

Figure l-l illustrates the instrument with the supplied accessories. In
accordance with international safety standards, both sections of this
instrument are equipped with three-wire ac power cables. Various
power cables are available to connect the HP 8568B to the types of
AC power outlets unique to specific geographic areas. See Figure l-2.
Cables appropriate for the area to which the instrument is originally
shipped are included with the instrument.

1-2 General information

IF-Display

Sect ion

RF Section

IF-Display

Sect ion

RF Sect ion

FRONT VIEW

REAR VIEW

Figure l-l. HP 8568B with Accessories Supplied

Description

HP Part Number

Type N (m) to BNC (f) connector 1250-0780

1ST

LO OUT BNC termination

BNC jumper cable (quantity: 2)

HP 11593A

85660-60117
Bus interconnect cable (W31) 85662-60220
Coax interconnect cable
Line power cables (2 each)

(W30) 85662-60093

see Figure l-2

General Information 1-3

PLUG TYPE * *

Hy;A;T

NUMBER

PLUG

DESCRIPTION

CABLE
LENGTH

a.4

(INCHES)

CABLE
COLOR

FOR USE

IN COUNTRY

250V

250V

250V

125V

250V

8120-1351
8120-1703

8120-1369
8 120-0696

8120-1689
8120-1692

8120-1348
8120-1538

8120-1378

8120-4753

8120-1521

8 120-4754

8120-5182
8120-5181

Straight*

90’

Straight*

9o”

Straight

90’

Straight*

90’

Straight*
Straight

90*

90’

Straight*

90°

BS1363A

NZSS198/ASC112 201

*

CEE7-Yl

NEMA5-15P

NEMA5-

NEMA5-15P

1

15P

229 (90) Mint Gray

Mint

229 (90)

(79)

221 (87)

201 (79)

201 (79)

203 (80)
203 (80)

203 (80)
230 (90)

203 (80)
230 (90)

200 (78)
200 (78)

Mint Gray

Mint

Gray

Gray

Gray

Gray

B I ock
Black

Jade

Gray
Jade Gray
Jade Gray
Jade Gray

Jade Groy
Jade Gray

Great
Cyprus.

Singapore,

Z imbobwe

Argentina,

Austrollo,

New Zealand,

Mainland Chino

East and West

Europe,
African Republic
United Arab

Republ

(unpolarized in

many

United States
Canada,
Japan (100 V or

200 V), Brazil,

Colombia, Mexico

Philippines,

Soudio
Taiwan

ic

nations)

Arabia,

Israel

Britoln,

Niger

centrcl

ia,

*

Port number for plug is industry

HP Part Number for complete cable, including plug

**

E =

t

FORMAT80

Earth

1-4 General Information

Ground,

identifier for plug only. Number shown for cable is

L = Line; N = Neutral.

Figure l-2. AC Power Cables Available

Accessories Available

A number of accessories are available from Hewlett-Packard to help
you configure your HP 8568B for your specific needs.

Preamplifiers

Close-Field Probes

75 to 50 ohm
Minimum-Loss Pad

Microwave Limiters

The HP 8447D preamplifier provides a
minimum of 26 dB gain from 100 kHz to

1.3

GHz

to enhance measurements of very

low-level signals.
The HP 11940A and HP 11941A Close-Field

Probes are small, hand-held,
field sensors. The probes can be used to
make repeatable, absolute, magnetic-field
measurements. When attached to a signal
source, the probes can be used to generate a
localized magnetic field for electromagnetic
interference
HP 11941A is specified over a frequency range
of 9 kHz to 30 MHz. The HP 11940A operates
from 30 MHz to 1

The minimum-loss pad (dc - 2.0
number 08566-60122, is a low-VSWR resistive
matching device for making measurements in

75-ohm systems.

The HP 11867A Limiter protects the
instrument input circuits from damage due
to high power levels. It operates over a
frequency range of dc to 1.8

10 W continuous and 100 W peak power.

(EMI)

susceptibility testing. The

GHz.

electromagnetic-

GHz),

HP part

GHz

and is rated

The HP 11693A Limiter is similar to the
HP 11863A but has a frequency range of 0.4
to 12.4

75 W peak power.
HP-IB Cable
Controllers

HP 85650A Quasi-Peak The HP 85650A adds to the spectrum
Adapter

Use HP

The HP 8568B is fully HP-IB programmable.

The preferred controllers are HP 9000

Series 300 computers. Consult your local

Hewlett-Packard service representative for

other recommended controllers and available

software.

analyzer the resolution bandwidth filters and

quasi-peak detection capability specified by

CISPR. Together the quasi-peak adapter and

the spectrum analyzer provide many of the

elements needed for an EM1 receiver system.

GHz

and is rated 1 W continuous and

10833A/B/G/D

HP-IB cables.

General Information

l-5

HP

85685A

Preselector

RF

The HP
with an HP
test receiver. It improves spectrum analyzer
measurement sensitivity while providing

overload protection from out-of-band signals.
This enables low-level signals to be monitored
in the presence of high-level ambients. Its
frequency range is 20 Hz to 2

85685A

8568B

RF Preselector can be used

to form a multi-purpose RF

GHz.

Options

Troubleshooting and Service information for the HP

Repair Manual available in the HP 85680B Troubleshooting

and

&pair

Troubleshooting and

They include schematic diagrams, block

diagrams, component location illustrations,
circuit descriptions, repair procedures, and
troubleshooting information.

Service Kits

Several options are available and can be ordered by option number
when you order the instrument. Some of the options are also
available as kits that can be ordered and installed after you have
received your HP 8568B.

Option 001

Option 010

75 ohm (BNC) RF input.
Rack Mount Slide kit. This option supplies the

necessary hardware and installation instructions for
mounting an instrument on slides into a rack of 482.6
mm (19 inch) spacing. The heavy-duty slides are
designed specifically to support the weight of the
HP
approximately 50 kg (112 lbs), the use of this option
is recommended. Option 010 is also available as a kit
(HP part number 5062-6407).

A service kit is available containing
troubleshooting and alignment accessories

for the HP 8568B. The kit includes a test

cable and extender boards. Order the kit as
HP part number 08568-60001. A combined
kit, HP part number 08566-60005 is available
containing accessories for both the HP 8566B
and HP 8568B instruments.

8568B.

Because of the weight of the HP

Manual

and the

&pair

8568B

is

HP 85662A

Manual.

8568B,

1-6 General Information

Option 080
Option 081
Option 400

Option 462

Information Cards in Japanese.
Information Cards in French.
The standard HP 8568B requires that the power line

frequency be 50 or 60 Hz. Option 400 allows the
instrument to operate with a 400 Hz power line
frequency.

This option provides 6 dB bandwidths for making
MIL-STD EM1 measurements. In addition to
enhancing instrument capability for MIL-STD
461D and 462D EM1 measurements, Option 462
spectrum analyzers can still make all commercial

EM1 and general-purpose measurements. Option
462 instruments with HP 85662A (top box) serial
prefixes below 3341A were

462A/B/C

(impulse bandwidth).

compatable

with MIL-STD

Option 857

Option 908

Option 910

Option 913

Option 915

The HP
applications. This option provides the cumulative
log fidelity and absolute amplitude performance
necessary for EMC receivers to meet their system
specs.

Rack Mount Flange kit (to mount without handles).
This option supplies the necessary hardware and
installation instructions for mounting an instrument in
a rack of 482.6 mm (19 inch) spacing. Option 908 is
also available as a kit (HP part number 5062-3986).

Extra

Manual and an extra HP 8568B
and Adjustments Manual.

Rack Mount Flanges with Handles (handles provided).
This option supplies the necessary hardware and
installation instructions for mounting an instrument
with handles in a rack of 482.6 mm (19 inch) spacing.
Option 913 is also available as a kit (HP part number
5062-3986).

This option supplies the HP 8568B troubleshooting
and repair manuals.

8568B

Option 857 is used in EMC receiver

HP 8568B Operating and Programming

&formunce lksts

Instruments Covered

by This Manual

This manual contains information for setup and verification of
operation of HP 8568B spectrum analyzers, including those with
Option 001 (75 Ohm RF INPUT), Option 400 (400 Hz operation),
Option 462 (6 dB bandwidths or impulse bandwidths), or Option 857
installed. The procedures in this manual can also be used to setup and
verify the operation of HP 8568A spectrum analyzers that have been
converted into HP 8568B spectrum analyzers through the installation
of an HP 8568AB Retrofit kit (formerly the HP 8568A+OlK Retrofit
Kit).

Serial

Hewlett-Packard makes frequent improvements to its products to
enhance their performance, usability, or reliability. HP service
personnel have access to complete records of design changes to each
type of equipment, based on the equipment’s serial number.

Whenever you contact HP about your instrument, have the complete
serial number available to ensure obtaining the most complete and
accurate information possible.

A serial number label is attached to the rear of each instrument
section. The serial number has two parts: the prefix (the first four
numbers and a letter), and the suffix (the last five numbers). See
Figure 1-3.

Numbers

The first four numbers of the prefix are a code identifying the date of
the last major design change incorporated in your instrument.

General Information

l-7

The letter identifies the country in which the instrument was

manufactured. The five-digit suffix is a sequential number and is
different for each instrument. Whenever you list the serial number
or refer to it in obtaining information about your instrument section,

be sure to use the complete number, including the full prefix and the

suffix.

PREFIX
COUNTRY OF ORIGIN

SUFFIX

ER

2730A00427

Figure 1-3. Typical Serial Number Label

l-8

General Information

Calibration Cycle

To ensure that the HP 8568B meets the specifications listed in Chapter
3, the operation verification listed in Chapter 5 should be performed
every 6 months.

HP-IB Address

Selection

Bench Operation

The instrument is shipped with the HP-IB address preset to 18 (ASCII
2R). The instrument stores this address in internal RAM memory
which is maintained by a lithium battery in STANDBY and when line
power is removed. This stored address can be changed from the
front panel or on switches located on the RF section’s Al5 controller
assembly. Refer to Chapter 2, “Installation.”

The instrument has plastic feet and
convenience in bench operation. The plastic feet are shaped to make
full-width modular instruments self-aligning when stacked. The
instrument is shipped with front handles attached for ease of moving.

foldaway

tilt stands for

General Information

l-9

Electrostatic Discharge Information

Electrostatic discharge (ESD) can damage or destroy electronic
components. Therefore, observe the following precautions:

n Be sure that all instruments are properly earth-grounded to prevent

buildup of static charge.

n Before connecting any coaxial cable to an instrument connector for

the first time each day, momentarily short the center and outer
conductors of the cable together.

n Personnel should be grounded with a resistor-isolated wrist strap

before touching the center pin of any connector and before
removing any assembly from the instrument.

n When replacing the instrument’s battery (refer to Replacing the RF

Section Battery in this chapter), be sure to observe the following:

q Perform the work at a static-safe workstation. See Figure l-4.
q Store or transport PC boards only in static-shielding containers.
q Always handle board assemblies by the edges. Do not touch the

edge-connector contacts or trace surfaces with bare hands.

Figure l-4 shows an example of a static-safe workstation. Two types
of ESD protection are shown: a) conductive table mat and wrist strap
combination, and b) conductive floor mat and heel strap combination.
The two types must be used together to ensure adequate ESD
protection. Refer to

nble

l-l for a list of static-safe accessories and

their part numbers.

FORMAT46

Wrist Str

Building

Ground

Bui

Id;nn

” “Y

nd

I

l-10 General Information

Figure l-4. Static-Safe Workstation

Static-Safe

Accessories

able

l-l. Static-Safe Accessories

HP Fart
Number

Order the following through any Hewlett-Packard Sales and Service
Office

9300-0797

9300-0980
9300-1383

9300-1169

Set includes: 3M static control mat 0.6 m x 1.2 m (2 ft

x 4 ft) and 4.6 cm (15 ft) ground wire. (The wrist-strap
and wrist-strap cord are not included. They must be
ordered separately.)

Wrist-strap cord 1.5 m (5 ft)
Wrist-strap, color black, stainless steel, without cord,

has four adjustable links and a 7 mm post-type
connection.

ESD heel-strap (reusable 6 to 12 months).

Description

General Information l-l 1

Routine Maintenance

Cleaning the Display

Caution

The inside surface of the glass CRT shield is coated with a thin
metallic film that can be easily damaged. To clean the glass CRT
shield, use thin-film cleaner (HP part number 8500-2163) and a
lint-free cloth. To clean the inside surface of the display glass, remove
the glass CRT shield using the following procedure:

1. Disconnect the ac line power from the instrument sections.

2. Remove the two screws securing the display bezel and CRT glass
shield to the front panel. These screws are located on the bottom
edge of the bezel. See Figure l-5.

While removing the two bezel screws, use caution to prevent the glass
from falling.

3. Remove the bezel and CRT glass shield.

1-12 General Information

Bezel Screws

Figure l-5. Display Bezel Screws

4. Clean the glass using the thin-film cleaner and a lint-free cloth.

5. Replace the glass shield. Place the side of the glass that has the
silver edge towards the CRT.

6. Replace the bezel and two screws.

Cleaning the RF

Section’s Fan Filter

The fan on the RF section has a air filter that should be regularly
inspected and cleaned. To clean the air filter perform the following:

1. Disconnect the ac line power from the RF section.

2. Remove the four screws securing the filter cover to the fan on the
RF section. Remove the filter.

3. Clean the filter using a mild soap and water. Dry the filter
thoroughly. If damaged, replace with a new filter (HP part number
85660-00049).

4. Replace the filter and its cover.

Replacing the RF

Section’s Battery

Warning

Warning

Caution

The RF section’s Al5 controller assembly has a battery for

maintaining internal RAM memory. This memory is primarily
used for storing instrument states, error correction data, and

DLPs

(downloadable programs). Under normal conditions, the

battery should typically last a minimum of three years. Use the
following procedure to replace the battery. Refer to the HP

Troubleshooting and Repair Manual for the HP part number.

Battery
or attempt to recharge this battery. Dispose of discharged
battery in a safe manner.

Changing the battery
requires the removal of the RF section’s protective bottom cover.
This should be performed only by a qualified service person.
Refer all such servicing of the instrument to qualified service
persons.

ESD (Electrostatic Discharge) can damage or destroy electronic
components. Work at a static-safe workstation when replacing the
battery.

1. Place the HP

BTl

contains lithium iodide. Do not incinerate, puncture,

BTl

on the Al5 controller assembly

8568B

on a static-safe workstation. Refer to

“Electrostatic Discharge Information” in this chapter.

8568OB

2. Disconnect the ac line power from the instrument sections. Place
the HP 8568B upside down on the work surface so that the
bottom of the RF section is facing up.

General Information

l-13

3. Using a screw driver, remove the two bottom RF section rear
panel bumpers. See

callouts

1 in Figure l-6.

TOP DOWN

Figure 1-6. Removing the Bottom Cover

4. Back out screw 2 (Figure l-6) causing the cover to unseat from
the front frame. When the cover is clear of the front frame, lift
the cover up to remove it.

l-14 General Information

5. Remove the cover from the Al5 controller assembly. See
Figure l-7.

Al5
CONTROLLER

ASSEMBLY

Figure l-7. Location of Al5 Controller Assembly

General Information 1-15

6. Remove the Al5 controller assembly. Locate the battery on the
Al5 assembly. Figure l-8 shows the location of the battery.

Battery

(A15BTl)

Figure 1-8. Location of Battery on Al5 Controller Assembly

7. Replace the battery with a new one (HP part number 1420-0331).
Be sure to install the battery with the polarity shown in
Figure l-8.

8. Replace the Al5 controller assembly.

9. Reconnect the power cables to the IF and RF sections.

10. Connect a jumper wire between the Al5 controller test points

A15TPl-8 T3 and A15TPl-9 ST (to erase and initialize Al5

controller nonvolitile memory).

11. Set the LINE switch to ON. The Al5 controller LED’s A15DSl

through
indicating the Al5 controller has

A15DS14

should all turn on, then turn off, sequentially,

sucessfully

executed self-test. If
they do not, the Al5 controller might be damaged or improperly
installed. In addition, all front panel LED’s should turn on
momentarily, indicating the HP 8566B has performed its power-on
pretest.

In addition to normal HP 8568B power-up HP-IB address and
firmware revision information, a BATTERY flag should appear on
the CRT, indicating that information previously stored in the Al5
controller nonvolitile memory has been lost or erased. Normally
the BATTERY flag appears after several years of use to indicate
that the lithium battery A15BTl needs to be replaced.

12. Remove the jumper wire between A15TPl-8 T3 and A15TPl-9 ST.

1-16 General Information

13. Set the LINE switch to STANDBY and then to ON. The HP 8568B
should power up normally, without any flags displayed on the
CRT.

14. Set the LINE switch to STANDBY and remove the power cable
from the rear of the RF section.

15. Install the controller cover,

16. Replace the RF section bottom cover and the two rear feet.

17. Place the HP 8568B top side up and reconnect the power cable to

the RF section.

18. Set the LINE switch to ON and allow a 2-hour warm-up.

19. Recalibrate the instrument with the following steps. (For a more

complete description of the calibration, refer to the HP

Operating

and Programming Manual.)

8568B

a. Connect the front-panel CAL OUTPUT signal to the SIGNAL

INPUT 2.

b. Press

[RECALL)

8, and then adjust the front-panel AMPTD CAL

adjust for a marker amplitude of -10.00 dBm.

c. Press

cm]

9, and then adjust the front-panel FREQ ZERO

adjust for maximum signal amplitude.

d. Press

@iiF]

[FREQUENCY SPAN]

w

to load the error correction

data in the instrument’s memory.

General Information l-17

Ordering

Information

Parts can be ordered from any Hewlett-Packard Sales and Service

Office. Refer to

order a part or assembly, quote the Hewlett-Packard part number,
indicate the quantity required, and address the order to the nearest
Hewlett-Packard Office.

To order a part that is not listed in the replaceable parts table, include

the instrument model number, the description and function of the
part, and the number of parts required. Address the order to the
nearest Hewlett-Packard Sales and Service Office.

Table

1-3 for a listing of sales and service offices. To

Direct Mail Order

System

Direct Phone-Order

System

Within the USA, Hewlett-Packard can supply parts through a direct

mail order system. Advantages of using the system are as follows:

w

Direct ordering and shipment from the HP Support Materials

Organization in Roseville, California.

n No maximum or minimum on any mail order. (There is a minimum

order amount for parts ordered through a local Hewlett-Packard
Sales and Service Office when the orders require billing and
invoicing.)

n Prepaid transportation. (There is a small handling charge for each

order.)

I

No invoices.

To provide these advantages, a check or money order must accompany
each order. Mail-order forms and specific ordering information is
available through your local Hewlett-Packard Sales and Service Office.

Within the USA, a phone order system is available for regular and
hotline replacement parts service. A toll-free phone number is
available, and Mastercard and Visa are accepted.

Regular Orders: The toll-free phone number, [phone], is

available 6 AM to 5 PM, Pacific time, Monday through Friday. Regular
orders have a 4 day delivery time.

1-16 General Information

Hotline Orders: Hotline service for ordering emergency parts is
available 24 hours a day, 365 days a year. There is an additional
hotline charge to cover the cost of freight and special handling.

The toll-free phone number, [phone], is available 6 AM to 5 PM,
Pacific time, Monday through Friday and (916)
after-hours, weekends, and holidays. Hotline orders are normally
delivered the following business day.

785-8HOT

is available

Returning the Instrument for Service

The instrument may be shipped in environments within the following
limits:

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 “C to + 75

Humidity . . . . . . . . . . . . . . . . . . . . . 5% to 90% at 0 “C to 40

Altitude . . . . . . . . . . . . . . . . Up to 15,240 meters (50,000 feet)

The instrument should be protected from temperature extremes which
may cause condensation within the instrument.

“C

“C

Service

lhgs

Original Packaging

Note

If you are returning the instrument to Hewlett-Packard for servicing,
fill in and attach a blue service tag to each instrument section.
(Service tags are supplied at the end of this chapter.)

Please be as specific as possible about the nature of the problem. If
you have recorded any error messages that appeared on the screen or
have any other specific data on the performance of the instrument,
please send a copy of this information with the instrument.

To protect the front panel, the front handles must be attached to each
instrument section before shipping.

It is recommended that the original factory packaging materials
be retained for use when shipping the instrument. Because of the
combined weight of the two instrument sections is approximately 50
kg (112 lbs), do not package the instrument sections fastened together
as one unit. The instrument sections must be separated and packaged
in separate containers. Pack each section in the original factory
packaging materials if they are available. See Figure 1-9. Refer to
Table l-2 for the part numbers of items listed in the figure. Original
materials are available through any Hewlett-Packard office.

General Information

l-19

(2 PLACES)

mounted for shipment.

Figure l-9. Factory Packaging Materials for Each Section

‘Ihble

1-2.

F&tory

Packaging Materials

Item

I

1

3

Description

1

Outer Box

2 Inner Box

I

/Inner

Qty HP Part Number

1 921l-4487
1

I I

Foam Pad 1 2

5180-2320

15180-2319

I

l-20 General Information

Other Packaging

Caution

Note

Instrument damage can result from using packaging materials other
than those specified. Never use styrene pellets as packaging materials.
They do not adequately cushion the instrument or prevent it from
shifting in the carton. They cause instrument damage by generating
static electricity.

To protect the front panel, the front handles should be attached to
each instrument section before shipping.

You can repackage the instrument with commercially available

materials, as follows:

1. Separate the two instrument sections.

2. Attach a completed service tag to each of the sections.

3. Wrap each section in antistatic plastic to reduce the possibility of
damage caused by electrostatic discharge.

4. Use a strong shipping container. A double-walled, corrugated
cardboard carton of
adequate. The carton must be large enough and strong enough to
accommodate the instrument. Allow at least 3 to 4 inches on all
sides of the instrument for packing material.

5. Surround the instrument with 3 to 4 inches of packing material, to
protect the instrument and prevent it from moving in the carton.
If packing foam is not available, the best alternative is S.D.-240 Air
Cap from Sealed Air Corporation (Hayward, California 94545). Air
Cap looks like a plastic sheet filled with
the pink (antistatic) Air Cap to reduce static electricity. Wrapping
the instrument section several times in this material should both
protect the instrument section and prevent it from moving in the
carton.

159-kg (350~lb)

bursting strength is

l-l/4

inch air bubbles. Use

6. Seal the carton with strong nylon adhesive tape.

7. Mark the carton

8. Retain copies of all shipping papers.

FRAGILE, HANDLE WITH CARE.

General Information

1-21

Sales and Service
Offices

Hewlett-Packard Sales and Service Offices provide worldwide support
for Hewlett-Packard products. To obtain servicing information or to
order replacement parts, contact the nearest Hewlett-Packard Sales
and Service Office listed in
provide essential information, which includes model numbers, serial
numbers, or assembly part numbers.

Able

l-3. In any correspondence, always

1-22 General Information

‘Ihble

1-3. Hewlett-Packard Sales and Service Offices

US FIELD OPERATIONS
HEADQUARTERS

Hewlett-Packard Company

19320 Pruneridge Avenue

Cupertino, CA 95014, USA

[phone]

California

Hewlett-Packard Co.

1421 South Manhattan Ave.
Fullerton, CA 92631
[phone]

Hewlett-Packard Co.
301 E. Evelyn
Mountain View, CA 94041
[phone]

Colorado

Hewlett-Packard Co.
24 Inverness Place, East
Englewood, CO 80112

[phone]

Georgia

Hewlett-Packard Co.

2000 South Park Place

Atlanta, GA 30339

[404)

955- 1500

Illinois

Hewlett-Packard Co.

5201 Tollview Drive

Rolling Meadows, IL 60008

1708)

255-9800

New Jersey

Hewlett-Packard Co.

150 Green Pond Road

Rockaway, NJ 07866

1201)

627-6400

Ikxas

Hewlett-Packard Co.

330

E. Campbell Rd.
Richardson, TX 75081

:214)

231-6101

EUROPEAN OPERATIONS
HEADQUARTERS

Hewlett-Packard S.A.

150, Route du
12 17 Meyrin

Nant-d’Avri1

2/Geneva

Switzerland
(41 22) 780.8111

France

Hewlett-Packard France

1 Avenue Du Canada

Zone D’Activite De Courtaboeuf

F-91947 Les Ulis Cedex
France

(33 1) 69 82 60 60

Germany

Hewlett-Packard

GmbH

Hewlett-Packard Strasse

6380 Bad Homburg v.d.H
Germany

(49 6172) 16-O

Great Britain

Hewlett-Packard Ltd.

Eskdale Road, Winnersh Triangle
Wokingham, Berkshire RGl 1 5DZ
England

(44 734) 696622

INTERCON

OPERATIONS

HEADQUARTERS

Hewlett-Packard Company
3495 Deer Creek Rd.
Palo Alto, California 94304-1316
[phone]

Australia

Hewlett-Packard Australia Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130
(61 3) 895-2895

Canada

Hewlett-Packard (Canada) Ltd.

17500 South Service Road
Trans-Canada Highway
Kirkland, Quebec H9J

2X8

Canada
[phone]

Japan

Yokogawa-Hewlett-Packard Ltd.

1-27-15 Yabe, Sagamihara
Kanagawa 229, Japan
(81 427) 59-1311

China

China Hewlett-Packard, Co.
38 Bei San Huan Xl Road
Shuang Yu Shu

Hai Dian District

Beijing, China
(86 1) 256-6888

Singapore

Hewlett-Packard Singapore
Pte. Ltd.
1150 Depot Road
Singapore 0410
(65) 273 7388

Wwan

Hewlett-Packard l%iwan
8th Floor, H-P Building
337 Fu Hsing North Road

nipei,

Taiwan

(886 2) 712-0404

General Information 1-23

Installation

2

What You’ll Find in
This Chapter

This chapter describes the process of getting the HP 8568B spectrum

analyzer ready to use. The process includes initial inspection and
installing the unit. Before installing the HP
the warnings, cautions, and notes listed in “Safety” below.

1

If you are

Standard Instruments” in this chapter.

n

To

install Option 908 or 913 instruments, refer to “To Install Option

908 and 913 Instruments” in this chapter.

n To install Option 010 instruments, refer to “To Install Option 010

Instruments” in this chapter.

Safety .............................................. 2-l

Preparation for Use

Initial Inspection
Operating Environment

Power Requirements
To Install Standard Instruments
To Install Option 908 and 913 Instruments
To Install Option 010 Instruments
To Set the HP-IB Address

From the Front Panel
From the HP-IB Bus
From the HP-IB Address Switch

not

installing the instrument in a rack, refer to “To Install

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

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

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

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

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

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

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

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

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

8568B,

be sure to read all

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

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

2-3
2-3
2-3
2-3
2-4

2-7
2-13
2-20
2-20
2-20
2-20

Safety

Before installing or operating this instrument, you should familiarize
yourself with the safety marking on the instrument and the safety
instructions in the manuals. The instrument has been manufactured
and tested in accordance with international safety standards.
However, to ensure safe operation of the instrument and personal
safety of the user, the cautions and warnings in the manuals must be
followed. Refer to the summary of the safety information located
near the front of this manual.

Installation

2-l

Warning

F’ailure

injury. Before turning on the HP
protective earth terminals to the protective conductor of the
main power cable. Insert the main power cable plug only into a

socket outlet that has a protective earth contact. DO NOT defeat
the earth-grounding protection by using an extension cable,
power cable, or autotransformer without a protective ground

conductor. If you are using an autotransformer, make sure its

common terminal is connected to the protective earth contact of
the power source outlet socket.

to ground the instrument properly can result in personal

8568B,

you must connect its

Warning

Warning

Caution

Power is still applied to this instrument with the

in STANDBY. There is no Off position for the
remove power from the instrument, it is necessary to remove the
power cable from the rear of each instrument section.

Because the combined weight of the instrument sections is
approximately 112 pounds, use appropriate caution when moving
or installing.

Before switching on this instrument, make sure it is adapted to
the voltage of the ac power source as described in the following
procedures. Failure to set the ac power input to the correct voltage
could cause damage to the instrument when the ac power cable is
plugged in.

m

m

switch

switch.

lb

2.2

Installation

Preparation for Use

Initial Inspection

Operating

Environment

Inspect the shipping container for damage. If the shipping container
or cushioning material is damaged, keep it until you have verified
that the contents are complete and you have tested the instrument
mechanically and electrically.

Contents of the shipment are shown in Figure l-l. If the contents
are incomplete or if the instrument does not pass the operation

verification tests (procedures are provided in Chapter
nearest Hewlett-Packard office. If the shipping container is damaged
or the cushioning material shows signs of stress, also notify the
carrier. Keep the shipping materials for the carrier’s inspection. The
HP office will arrange for repair or replacement without waiting for a

claim settlement.
If the shipping container and cushioning material are in good

condition, retain them for possible future use. You may wish to ship
the instrument to another location or to return it to Hewlett-Packard
for service. Chapter 1, “General Information, ” provides instructions
for repackaging and shipping the instrument.

The instrument may be operated in environments within the following
limits:

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 “C to

Humidity . . . . . . . . . . . . . . . . . . . . . 5% to 90% at 0 “C to 40

Altitude . . . . . . . . . . . . . . . . . . up to 4,572 meters (15,000 feet)

5),

notify the

+55 “C

“C

Power Requirements

The instrument should be protected from temperature extremes which
might cause condensation within the instrument.

The HP 8568B requires a power source of 100, 120, 220, or 240 Vat

+ 5%

sections combined is less than 650 VA.

-lo%,

50-60 Hz. Power consumption for the instrument

Installation 2-3

To Install Standard

Instruments

1. Place the RF section right-side up on a level work surface.

2. Place the IF-Display section on top of the RF section, offset far
enough forward to allow the RF section hooks to engage the
IF-Display section frame when slid back. Slide the IF-Display
section back until the RF section hooks catch the bottom of the
IF-Display section.

3. Line up the rear-panel lock feet, and tighten the thumb screws on
both lock feet.

4. Connect cable W31 between IF-Display section 52 and RF section
J6. See Figure 2-l.

5. Connect cable
Jl.

W30

between IF-Display section Jl and RF section

w30

32

w31 w37

Jl

J4 J5

W38

2-4 Installation

Figure 2- 1. Rear-Panel Cable Connections

6. Determine the ac line voltage to be used.

7. On each instrument section, slide open the power module’s fuse
cover (located on the rear panel). See Figure 2-2. Push the
fuse-pull lever to the left. Remove the fuse.

Line Voltage Setting Card Fuse

Figure 2-2. Voltage Selector Board and Fuse

8. On each power-line module, check the voltage selector card for
the proper ac line voltage. The card’s voltage setting should
be visible on the card. See Figure 2-2. If you need to select a
different ac line voltage setting, perform the following:

a. Use needle-nose pliers to pull out the voltage-selector card.

Rotate the card so that the voltage label corresponding to the

actual line voltage will appear in the module window.

b. Push the card back into its slot.

Installation 2-5

9. Check the fuse to make sure it is of the correct rating and type
for the ac line voltage selected. Fuse ratings for different line
voltages are indicated in the following table.

Note

ac Line Voltage IF-Display Section

100/120

220/240

10. Insert the correct fuse, and push the fuse-pull lever into its
normal right-hand position.

11. Connect the ac line power cords.

12. If the HP

HP-IB Address” in this chapter.

13. When you turn your instrument on for the first time, you should

perform the verification tests in Chapter 5. Refer to the

Operation and Programming Manual for instructions on using

the instrument.

Cables W37 and
ports to the HP
without the HP 85650A Quasi-Peak adapter, W37 and W38 must be
connected for the instrument to operate.

2 amperes FAST BLO 2 amperes FAST BLO

HP nart number 2110-0002 HP

1 ampere SLOW BLO 1 amperes SLOW BLO

HP part number 2110-0007 HP part number 2110-0007

8568B

will be remotely controlled, refer to “To Set the

W38

are removed for connection of the IF and VIDEO

85650A

Quasi-Peak adapter. If the instrument is used

RF Section

Dart

number 2110-0002

HP8568B

1

2-6 Installation

To Install Option 908 and 913 Instruments

Option 908 contain the necessary hardware to mount the HP
without handles in a rack of 482.6 mm (19 in) spacing. Option 913
mounts the HP

1. Remove the front-handle trim from each side of the RF and
IF-Display sections. See

8568B

with handles.

callout

1 in Figure 2-3.

8568B

Figure 2-3. Removing the Handles and Trim

2. Remove the three screws securing each handle, and remove the
handles. See

callouts

2 and 3 in Figure 2-3.

Installation 2-7

3. The information-card tray located on the bottom of the
RF-Display section requires a space of approximately 2 cm

below the instrument when rack mounting. See

callout

1 in
Figure 2-4. (No filler strip is provided.) If you wish to remove
the information-card tray, remove the feet and tilt stands. See

callouts

2 and 3 in Figure 2-4.

Figure 2-4. Removing the Information-Card Tray

2-6 Installation

4. On each instrument section, attach the rack mount flange (and
front handles for Option 913) using the three
screws provided in the kit. See Figure 2-5.

RACK MOUNT

M4x0.7~16

pan-head

Figure 2-5. Attach the Rack Mount Flanges

5. Determine the ac line voltage to be used.

Installation 2-9

6. On each instrument section, slide open the power module’s
fuse door (located on the rear panel). See Figure 2-6. Push the
fuse-pull lever to the left. Remove the fuse.

Note

Although Figure 2-6 shows the two instrument sections connected
together, they will be mounted separately in the rack.

2-10

Installation

Line Voltage SettingLine Voltage Setting CardCard

FuseFuse

Figure 2-6. Voltage Selector Board and Fuse

7. On each power-line module, check the voltage selector card for
the proper ac line voltage. The card’s voltage setting should
be visible on the card. See Figure 2-6. If you need to select a
different ac line voltage setting, perform the following:

a. Use needle-nose pliers to pull out the voltage-selector card.

Rotate the card so that the voltage label corresponding to the
actual line voltage will appear in the module window.

b. Push the card back into its slot.

8. Check the fuse to make sure it is of the correct rating and type
for the ac line voltage selected. Fuse ratings for different line
voltages are indicated in the following table.

ac Line Voltage

100/120

2 FAST BLOamperes 2 FAST BLOamperes

IF-Display Section RF Section

HP part number 2110-0002 HP part number 2110-0002

220/240

1 SLOW BLOampere 1 SLOW BLOamperes

HP part number 2 110-0007HP part number 2 110-0007

9. Insert the correct fuse, and push the fuse-pull lever into its
normal right-hand position.

10. Bolt each instrument section into the rack from its rack mount
flange. Place the IF-Display section just above the RF section.

11. Connect cable W31 between IF-Display section

52

and RF section

J6. See Figure 2-7.

W30

12. Connect cable

between IF-Display section Jl and RF section

Jl.

J2

Jl

J4

J5

Figure 2-7. Rear-Panel Cable Connections

Installation

2-l

1

13. Connect the ac line power cords.

14. If the HP

8568B

will be remotely controlled, refer to “To Set the

HP-IB Address” in this chapter.

15. When you turn your instrument on for the first time, you should
perform the verification tests in Chapter 5. Refer to the

Operation and Programming Manual for instructions on using

HP8568B

the instrument.

Cables W37 and W38 are removed for connection of the IF and VIDEO
ports to the HP 85650A Quasi-Peak adapter. If the instrument is used
without the HP 8565OA Quasi-Peak adapter, W37 and W38 must be

connected for the instrument to operate.

2-12 Installation

To Install Option

010 Instruments

Option 010 mounts the HP 8568B on slides in a rack of 482.6 mm

(19 in) spacing. (Option 010 also contains adapters for mounting in

non-HP racks.)

1. Remove the strap handle on the IF-Display section’s left side
panel.

2. Remove the right-rear lock foot, and the right-rear top foot from
the IF-Display section. Slide the right-side cover off to the rear.
Install the right-side cover included in the kit, and replace the

rear feet.

3. Remove the front-handle trim from each side of the RF and
IF-Display sections. See

callout

1 in Figure 2-8.

Figure 2-8. Removing the Handles and Trim

4. Remove the three screws securing each handle, and remove the
handles. See

callouts

2 and 3 in Figure 2-8.

Installation 2-13

5. The information-card tray located on the bottom of the
RF-Display section requires a space of approximately 2 cm

below the instrument when rack mounting. See

callout

1 in
Figure 2-9. (No filler strip is provided.) If you wish to remove
the information-card tray, remove the feet and tilt stands. See

callouts

2 and 3 in Figure 2-9.

I

Figure 2-9. Removing the Information-Card Tray

6. Place the RF section right side up on a level work surface.

7. Place the IF-Display section on top of the RF section, offset far
enough forward to allow the RF section hooks to engage the
IF-Display section frame when slid back. Slide the IF-Display
section back until the RF section hooks catch the bottom of the
IF-Display section.

8. Line up the rear-panel lock feet, and tighten the thumb screws on

both lock feet.

9. Attach the 10-l/2 inch handles with flanges as shown in
Figure 2-10.

2-14 Installation

.,@

,

.,p

“./p

,

P

,..’

Figure 2-10. Attaching the Rack Handles and Flanges

10. Connect cable W31 between IF-Display section 52 and RF section
J6. See Figure 2-l 1.

11. Connect cable

Jl.

W30

between IF-Display section Jl and RF section

w30

w31

Jl

J4

w37

W38

J5

Figure 2-l 1. Rear-Panel Cable Connections

Installation 2-15

12. Determine the ac line voltage to be used.

13. On each instrument section, slide open the power module’s fuse
door (located on the rear panel). See Figure 2-12. Push the
fuse-pull lever to the left. Remove the fuse.

Line Voltage Setting

Card

Fuse

Figure 2-12. Voltage Selector Board and Fuse

14. On each power-line module, check the voltage selector card for
the proper ac line voltage. The card’s voltage setting should

be visible on the card. See Figure 2-11. If you need to select a

different ac line voltage setting, perform the following:
a. Use needle-nose pliers to pull out the voltage-selector card.

Rotate the card so that the voltage label corresponding to the
actual line voltage will appear in the module window.

b. Push the card back into its slot.

2-16 Installation

15. Check the fuse to make sure it is of the correct rating and type
for the ac line voltage selected. Fuse ratings for different line
voltages are indicated in the following table.

ac Line Voltage IF-Display Section RF Section

100/120

220/240

16. Insert the correct fuse, and push the fuse-pull lever into its

normal right-hand position.

17. Attach one slide inner-member bracket to each side of the

instrument using two M5x0.8~10 pan-head screws per side. See

callout

in 1 of Figure 2-13.

2

amperes FAST

HP part number 2110-0002 HP part number 2110-0002

1

ampere

HP part number 2110-0007 HP part number 2110-0007

SLOW BLO

BLO

2

amperes

1

amperes

FAST BLO

SLOW BLO

Figure 2-13. Attaching the Inner-Member Brackets

18. Mounting in an HP System Rack Cabinet:
a. Insert two Unistrut nuts,

the two vertical columns on the left side of the system cabinet.
Insert two Unistrut nuts into each of the two vertical columns
on the right side of the system cabinet.

b. Bolt an outer slide mount to the Unistrut nuts in each side of

the systems cabinet, using four

side. See

callout

in 3 of Figure 2-13.

callout

2 in Figure 2-13, into each of

M5x0.8~12

pan-head screws per

Installation

2-17

c. Expand the outer slide mounts to their full length. Mount the

instrument onto the system cabinet by bolting the outer slide
mount to the inner-member bracket on the instrument, using
three

M5x0.8~12

flat-head screws per side.

Note

If any binding is encountered in the slides after mounting, it will be
necessary to slightly move the Unistrut nuts. While supporting the
instrument, loosen one of the Unistrut nuts. Adjust the slides slightly
until they operate freely. Retighten the Unistrut nut.

19. Mounting in a Non-HP System Rack Cabinet:
a. Using hole pattern “B,” see Figure 2-14, attach one adapter

bracket to the front of each outer slide mount, using two

M4x0.8~12

flat-head screws and nuts per bracket.

2-18 Installation

Figure 2-14. Slide Adapter for Non-HP System Rack Cabinets

b. Using hole pattern “B,” attach one adapter bracket to the

rear of each outer slide mount, using two
screws and nuts per bracket.

c. Bolt an outer slide mount to each side of the system rack

cabinet using
nuts provided in the kit if the rack mounting strips have
through-holes.

M5x0.8~12

pan-head screws. Use the bar

M5x0.8~12

pan-head

Note

Note

If any binding is encountered in the slides after mounting, it will be
necessary to slightly move the adapter brackets. While supporting
the instrument, loosen one of the adapter brackets. Adjust the slides
slightly until they operate freely. Retighten the adapter brackets.

20. Connect the ac line power cords.

21. If the HP 8568B will be remotely controlled, refer to “‘Ib Set the
HP-IB Address” in this chapter.

22. When you turn your instrument on for the first time, you should
perform the verification tests in Chapter 5. Refer to the HP

Operation and Programming Manual for instructions on using

the instrument.

Cables W37 and W38 are removed for connection of the IF and VIDEO
ports to the HP 85650A Quasi-Peak adapter. If the instrument is used
without the HP 85650A Quasi-Peak adapter, W37 and W38 must be
connected for the instrument to operate.

8568B

Installation 2-19

To Set the HP-IB

Address

The HP-IB address is used in remote programming to identify the
instrument. The decimal address is preset at the factory to 18 (ASCII
2R). Addresses may be decimal 0 through 30. The HP-IB address can
be changed manually from the instrument’s front panel, remotely via
the HP-IB bus, or by setting the instrument’s internal address switch.

The internal address switch is comprised of five switches located
on the Al5 controller assembly in the RF section. These switches

(A15SWl A2 - A6) determine the HP-IB address to be used at

instrument “power-up.” These switches are preset at the factory to

binary 11111 (decimal

address stored in RAM memory (or to the default value 18, if the
contents of RAM memory are ever lost due to a battery failure, and so
on). If the switches are set to a value other than 31, the instrument
will always reset the HP-IB address to this value at power-up.

31),

which sets the instrument to the HP-IB

From the Front Panel

From the HP-IB Bus

From the HP-IB

Address Switch

Warning

To enter a new address from the front panel:

1.

Press

CSHIFT) (EELi]

2. Use the number keypad to enter the new decimal address.

3. Terminate the entry by pressing
HP-IB address and stores the new address value in RAM memory.

To enter a new address via the HP-IB bus, refer to the KSP command
in the

HP 8568B Operating and Programming Manual.

Changing the HP-IB address by resetting the address switch
on the Al5 Controller assembly requires the removal of the RF

section’s protective bottom cover. This should be performed

only by a qualified service person. Refer all such servicing of the
instrument to qualified service persons.

p.

IHz).

This changes the current

2-20

Installation

1. Disconnect the ac line cord from the RF section.

2. Using a screw driver, remove the two RF-section rear panel
bumpers. See

callout

1 in Figure 2-15.

TOP DOWN

Figure 2-15. Removing the Bottom Cover

3. Back out screw 2 (see Figure 2-15) and the cover unseats from the
front frame. When the cover is clear of the rear frame, remove the
cover by lifting up.

4. Remove the cover from the Al5 controller assembly. See
Figure 2-16 to locate the assembly.

Installation 2-21

Al5 CONTROLLER

ASSEMBLY

Locat

ion

of HP-IB

Switch)

Figure 2-16. Location of Al5 Controller Assembly

5. Locate the address switch A15SWl as shown in Figure 2-16
and Figure 2-17. Change the switch’s setting according to the
information given below.

The switch comprises six segments, Al through A6. Al must
always be set to logic 1. Each of the remaining five segments, A2
through A6, corresponds to one of the digits of a 5-digit binary
equivalent of the address. See Figure 2-17. The switch is preset at
the factory to binary 11111 (decimal 31). This is a special code
which commands the instrument to use the last input address
(stored in memory) either from the front panel or from HP-IB.

You can reset the switch to correspond to the binary equivalent of
any desired decimal value indicated in

Iable

2-l. For example, if
the desired address is 4, the A15SWl would be set as shown in
Figure 2-18.

2-22 Installation

Note

Observe that although 2’ is the far-right digit in Table 2-1, 2’ is
represented by the far-left segment of the address switch.

20 21 22 23 24

= Logic 1

u

= Logic 0

4

\A6 A5 A4 A3

Figure 2-17. Address Switch (Shown in Factory Preset Position)

A2,

Al

Installation 2-23

= Logic 1

1

= Logic 0

Q

\A6 A5 A4 A3

A2,

Al

(Always set at logic 1)

v

HP-IB ADDRESS

Figure 2-18. Address Switch Set to 4

6. Replace the cover on the Al5 controller assembly.

7. Replace the RF section’s bottom cover.

2-24 Installation

‘Ihble

2-l. Decimal and Binary Address Codes

Decimal Value

0

1
2
3
4
5
6

7
8

9
10
11
12
13
14
15

16
17
18

19
20
21
22
23
24
25
26
27
28
29
30

S-Bit

Binary Equivalen

00000

00001
00010
00011
00100
00101

00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011

11100
11101
11110

Installation 2-25

Specifications

3

Introduction

Frequency

Measurement Range

Displayed Values

Note

Unless noted, all specifications are for AUTOCOUPLED FUNCTION
operation. Where specifications are subject to minimization with the
error-correction routine, corrected limits are given unless noted.
Nominal values provide useful, but nonwarranted, information about
functional performance.

100 Hz to 1500 MHz through two RF inputs: 100 Hz to 1500 MHz
dc coupled, and 100 kHz to 1500 MHz ac coupled.

Frequency Reference Error and Accuracy

Accuracy

<I

x

Aging rate
Temperature stability ~7 x 10eg over 0 “C to 55 “C range (25 “C reference)

The term frequency reference error, when used later in this manual,

is defined as: f [aging rate/day x number of days since calibration
temperature stability].

10hg/day

and

~2.5

x

10F7/year

+

Note

Note

Center Frequency

When the analyzer is in STANDBY, the frequency reference

temperature is maintained at a steady state. For more information,
see “Warm-Up Time” under “General” in this chapter.

Changes in line voltage, gravitational field, and other environmental
conditions will affect the frequency reference accuracy.

Range

0 Hz to 1500 MHz

Specifications 3-1

Readout Accuracy

Span

2100

Hz

*(2% of frequency span + frequency reference error x tune

frequency + 10 Hz) in AUTO resolution bandwidth after adjusting
FREQ ZERO at stabilized temperature, and using the error-correction
function,
bandwidth setting if error correction is not used.

Zero Frequency Span

[SHIFT]

[FREQUENCY SPAN] (KSW). Add 30% of the resolution

Accuracy

Frequency Span

Resolution Frequency Reference Error x
Bandwidth

10 Hz to 300 Hz
1 kHz to 3 kHz
10 kHz to 3 MHz

Tune Frequency + Resolution

10 Hz 1 Hz

100 Hz 10 Hz

1

kHz

Readout

100 Hz

Range

0 Hz and 100 Hz to 1500 MHz over lo-division CRT horizontal axis;
variable in approximately 1% increments. Step keys change span in a

1, 2, 5 sequence.

Full Span

0 to 1500 MHz is immediately executed with the

&NSTR PRESET] keys.

Frequency Span Readout Accuracy

Accuracy
Range
Readout Accuracy

Spans 21 MHz

Spans >l MHz

Start or Stop
Frequency Readout frequency span accuracy
Accuracy

100 Hz to 1500 MHz

f5%

of the actual frequency separation between

two points + 0.5% span

f2%

of the actual frequency separation between

two points + 0.5% span

Center frequency readout accuracy +

(j-1

or

l/2

3-2 Specifications

Frequency Count

Displays the frequency of the signal on whose response the marker is
positioned. The marker must be positioned at least 20 dB above the
noise or the intersection of the signal with an adjacent signal, and
more than four divisions up from the bottom of the display.

Counter resolution is normally a function of frequency span, but may
be specified directly using

Frequency Count Accuracy

ISHIFT_]

(YJ

Resolution

Frequency Span

5100

kHz

>lOO

kHz to 1 MHz

>l

MHz

<&[frequency

+ 2 x frequency counter resolution]

<*[frequency

+ 10 Hz + 2 x frequency counter resolution]

c&l10

kHz + freauencv counter resolution1

reference error x displayed frequency

Accuracy

reference error x displayed frequency

Resolution Bandwidth

3 dB bandwidths of 10 Hz to 3 MHz in a 1, 3, 10 sequence. Bandwidth
may be selected manually or coupled to frequency span (AUTO mode).

3 dB Bandwidth Accuracy*

Bandwidth

3

MHz

3

kHz

to 1 MHz

10 Hz to 1 kHz

*30

kHz and 100 kHz bandwidth accuracy figures only applicable

190% relative humidity,

140

“C.

Accuracy

&20%

510%

f20%

7

60 dB to 3 dB Bandwidth Selectivity Ratio*

)

Bandwidth

100 kHz to 3 MHz <15:1

3

kHz

to

30 kHz <13:1

30

Hz to1 kHz <12:1

*60 dB

points on 10 Hz bandwidth are separated by ~100 Hz.

Selectivity

Specifications 3-3

Resolution Bandwidth (Option 462 6 dB Bandwidths)

6 dB bandwidths of 10 Hz to 3 MHz in 1, 3, 10 sequence. Bandwidth
may be selected manually or coupled to frequency span (AUTO mode).

6 dB Bandwidth Accuracy*

Bandwidths Accuracy

3

MHz

30 Hz to 1 MHz

10 Hz

*30

kHz and 100 kHz bandwidth accuracy figures only applicable

590% relative humidity

60 dB/6 dB Bandwidth Selectivity Ratio*

540’C.

f20%

flO%

+50, -0%

Bandwidths

100 kHz to 3 MHz

30 Hz to 30 kHz
‘60 dB points on 10 Hz bandwidth are separated by ~100 Hz.

Selectivity

<ll:l

<8:1

Resolution Bandwidth (Option 462 Impulse Bandwidths)

Impulse bandwidth of 1 kHz to 3 MHz and 6 dB bandwidth of 10 Hz to
300 Hz in 1, 3, 10 sequence. Bandwidth may be selected manually or
coupled to frequency span (AUTO mode).

Impulse Bandwidth Accuracy *

Bandwidth

3 MHz (Impulse

1 kHz to 1 MHz (Impulse
10 Hz to 300 Hz (6 dB Bandwidth)

*30

kHz and 100 kHz bandwidth accuracy figures only applicable

190% relative humidity

1

Applicable in 10 dB/div.

Bandwidthi)

Bandwidtht)

540

“C.

60 dB/6 dB Bandwidth Selectivity Ratio*

Accuracy

f20%

flO%

+50%,

-0%

3-4 Specifications

Bandwidth

100 kHz to 3 MHz

30 Hz to 30 kHz

*60

dB points on 10 Hz bandwidth are separated by

Selectivity

~100

Hz.

<ll:l

<8:1

Bandwidth Shape

Synchronously-tuned, five-pole filters for 10 Hz to 30 kHz bandwidths;
four poles, 100 kHz to 3 MHz bandwidth. Approximate Gaussian
shape optimized for minimum sweep time and smooth pulse response
with calibrated display.

Stability

Residual FM

<3

Hz peak-to-peak in

bandwidth

530

Hz, video bandwidth

110

seconds, span ~100 kHz, resolution

530

Hz.

Spectral Purity

Noise Sidebands

Offset from Carrier

300 Hz

3 kHz

30 kHz

Sideband Level (1 Hz BW)

Power-Line-Related Sidebands

>85 dB below the peak of a CW signal.

-90 dBc/Hz

-

100 dBc/Hz

-

107 dBc/Hz

Specifications 3-5

Amplitude

Measurement Range

Displayed Values

Measurement range is the total amplitude range over which

the analyzer can measure signal responses. The low value is
determined by sensitivity (10 Hz resolution bandwidth and 0 dB input
attenuation), and the high value by damage level.

Amplitude Measurement Range

-

135 dBm to + 30 dBm

Scale

Over a lo-division CRT vertical axis with reference level (0

top graticule line.

Calibration

Calibration

Lot!

Linear

10 dB/div for 90 dB display from reference level.

Expanded from reference level:

5 dB/div for 50 dB display
2 dB/div for 20 dB display

1 dB/div for 10 dB display

10% of reference

level/div

when calibrated in voltage.

dB)

at the

Reference Level Range

Range

+30.0

Lo&?

I

Linear 7.07 V to 2.2 PV full scale. Readout expandable to 223.6

*Maximum total

Accuracy

The sum of several factors, listed in “Amplitude Uncertainty,

determines the accuracy of the reference level readout. Refer to the

“Amplitude Uncertainty” section in this chapter.

I

to -99.9 dBm or equivalent in
Readout expandable to +60.0* dBm to -119.9 dBm
(-139.9 dBm for 11 kHz resolution bandwidth) using

(-SHIFT] [ATTEN_)

to 2.2 PV (0.22 PV for <I kHz resolution bandwidth) using
[SHIFT)

[ATTEN)

(KSI).

(KSI).

inout

power not to exceed

dBmV, dBpV,

+30

dBm damage level.

volts.

V*

”

3-6 Specifications

Reference Lines

Accuracy

Dynamic Range

Equals the sum of reference level accuracy plus the scale fidelity
between the reference level and the reference line level.

Spurious Responses

Note

Note

For total signal power of
analyzer, all image and out-of-band mixing responses, harmonic and
intermodulation distortion products are
power for input signals 10 MHz to 1500 MHz,
signal power with input signals

Input mixer level is defined as the input attenuation subtracted from

the total signal power at the input connector.

I

210
<lO

*For a signal -30 dBm at the mixer.

I

For typical second and third order distortion characteristics, see
Figure 4-4 in Chapter 4, “Performance Characteristics.”

Dynamic range due to Third Order Intermodulation Distortion and
noise level can be calculated from
level]. For example, at 900 MHz the analyzer’s specified dynamic
range when using the 10 Hz resolution BW is:

dBm)]

Frequency Range

MHz
MHz

=

2/3(145)

= 96.7

c-40

dBm at the input mixer of the

>75 dB

~10

MHz.

Second Harmonic Distortion *

I

below the total signal

>70 dB

Distortion

<-70
<-60

2/3 [TOI -

dB.

displayed average noise

2/3

[ + 10 dBm - (-135

below the total

dBc

dBc

I

I

Note

Two-tone intermodulation distortion products can be calculated from

2(TOI -

intermodulation products for a +5 dBm TO1 will be:

2[ +

*For two signals, each -30 dBm at the mixer.

signal level). For example, for two tones at -30 dBm, the

5 dBm -

Center Signal

Frequency

>lOO

>lO

(-30)]

= 70 dB down.

Third Order Intermodulation Distortion *

Distortion

Separation

kHz

MHz >lOO

<lOO

kHz
kHz

Products

<-70
<-80

dBc
dBc

>+5

>+lO

TO1

dBm

dBm

Residual Responses

Residual responses are signals generated by the analyzer independent
of input signals.

Specifications 3-7

Residual Responses *

Frequency Range

500 Hz to 1500 MHz

*With 0 dB input attenuation and no input signal.

Residual Responses

c-105

dBm

Gain Compression

~0.5

dB for signal levels

Displayed

500 Hz to 51 MHz

>l

MHz to 1500 MHz

*0 dB input attenuation, 10 Hz resolution bandwidth, and

1 Hz video bandwidth.

Average Noise Level (Sensitivity)

Tuning Range Level

s-10

dBm at the input mixer.

Average Noise *

c-112

c-135

dBm

dBm

3-8 Specifications

‘lhble

Footnotes

Requires executing the error-correction function

l

IFREQUENCY SPAN)) after stabilization at new ambient temperature.

Otherwise, typical amplitude drift may be

-10 dBm reference level, 10 dB input attenuation and 1 MHz
resolution bandwidth.)

’

COUPLED FUNCTION not required as long as
message is not displayed.

3

For IF-Display sections with serial prefixes 3014A and above,
specification applies over entire display.

4

Assuming calibration signal is used to calibrate the reference level
at -10 dBm and the input attenuator is fixed at 10

5

When the error-correction function is used, amplitude uncertainty

is introduced because additional IF gain is used to offset the

amplitude errors caused by resolution bandwidth switching, log

scale switching, and RF gain errors.

6

Unaffected by error correction.

7

30 kHz and 100 kHz bandwidth switching uncertainty only
applicable 590% relative humidity,

8

Referenced to Log 1 dB/div.

g

Useable

bandwidth. Refer to “Average Noise Level” in Chapter 4,

“Characteristics.

reference level range is a function of resolution

”

540 “C.

ho.05

([GiK]

dB/‘C (at

MEAS

UNCAL

dB.

Specifications

3-l

1

Marker

The marker is a bright dot placed upon the display trace and is
positioned horizontally by the DATA controls. The marker amplitude
and frequency are displayed continuously.

Frequency Accuracy

Marker

Normal

A (Delta)

Marker

Type

Normal

A (Delta) Same as frequency response uncertainty + scale

Same as center frequency accuracy + frequency span
accuracy between marker and center frequency.
Same as frequency span accuracy. In FREQ COUNT
mode, twice the frequency count uncertainty plus drift
during the period of the sweep.
See “Drift” under “Stability” in the characteristics

ChaDter.

Amplitude Accuracy

Same as reference level accuracy + scale fidelity
between the reference level and marker position.

fidelity between the two markers.

Accuracy

Accuracy

Sweep

3-12 Specifications

I

5100

second sweep times

I

>lOO

second sweep times

I

Sweep Time Accuracy

Sweep Time

I

I
I

Accuracy

xtZlO%

&20%

I

I

I

Inputs

INPUT

INPUT

#l

#2

Zonnector
?requency

Xange

Maximum Input

ac

dc

Zonnector

Frequency

Xange

Maximum Input

ac

dc

BNC female, front panel, fused

100 Hz to 1500 MHz, dc coupled

Continuous power:
Mixer protected by diode limiter.
Pulse power:

dB

input attenuation
mixer).

< 100 mA damage level

Type N female, front panel

100 kHz to 1500 MHz, ac coupled

Continuous power: + 30 dBm from 50 0 source.
Mixer protected by diode limiter.
Pulse power:

dB

input attenuation
mixer).

*50 v

+30

dBm from 50 D source.

5100

W, 10 ps pulse width with

(50

dBm peak power to input

1100

W, 10

(50

p-s

pulse width with

dBm peak power to input

250

150

Note

+ 30 dBm (1 W) input damage level.

Specifications 3-13

Outputs

1ST

CAL OUTPUT

LO OUTPUT

Connector

ImDedance

Frequency 20 MHz *(frequency reference error x

1

Amplitude

Connector
Impedance
Frequency
Amplitude
Maximum Safe Reverse

Level

]

BNC female, front panel

I 50

D

nominal

20 MHz)

I

-10 dBm

BNC female, rear panel
50

62

2.0 to 3.7

>+4
+27

*0.3 dB

nominal

dBm

dBm

GHz

(l/2

W) total power into 50

Q

Options

75 B Input Impedance,

Option 001

All specifications are identical to the standard HP
noted below.

INPUT #1

Connector

Impedance

Residual Responses, Input #l

Frequency Range

500 Hz to 1500 MHz

Average Noise*, Input

Tuning Range

500 Hz to 1 MHz

1 MHz to 1500 MHz
*0 dB input attenuation, 10 Hz resolution bandwidth, and

1 Hz video bandwidth.

BNC female, front panel, not
fused

75

0 nominal

Residual Response

c-99

dBm

8568B,

#I

Level

c-106

c-129

dBm

except as

dBm

3-14 Specifications

400 Hz Power Line

Frequency Operation,

Option 400

Power Line Related Sidebands

>75 dB

below peak of a CW signal.

Residual Responses *

I

500 Hz to

I

>2.5

*With 0 dB input attenuation and no input signal.

Line Voltage

50 Hz to 60 Hz (service only, not for extended
periods)

400 Hz

Frequency Range

52.5

kHz

kHz to 1500 MHz

Power Requirements

Line

Frequency operation for servicing only)

400 Hz

100 or 120 V

Operating Temperature Range

Power Line Frequency

flO%

I

I

I

line frequency (50 Hz to 60 Hz

(+5%,

Residual Response

Specification

-10%)

c-95

dBm

<-lo5 dBi7

-1

Temperature

5 “C to 35

5 “C to 55

I

Range

“C

“C

Specifications 3-l

5

General

Power

HP-IB Interface

Functions

Environmental

Note

Requirements

Humidity

SHl, AHl,

T6, L4, SRI,

RLl,

PPO, DCl,

DTl,

Cl, C2, C3, C28, E2

Temperature

Operation: 0 “C to 55

Storage:

Increased internal temperatures may result if the rear-panel air filters

are not cleaned regularly.

-40 “C to 75

“C

“C

Altitude

Operation:
Storage:

50 to60Hz; 100, 120,
450 VA (40 VA in standby). 400 Hz operation is available as Option

400.

14,572
115,240

m (15,000 feet)

m (50,000 feet)

220,or240

volts

(+5%,

-10%); approximately

Operation

EMI

X-Rays

Except as noted in electrical specifications, type tested at <95%
relative humidity, 25 “C to 40 “C for 5 days.

Storage

5% to 90% relative humidity, 0 “C to 40

Conducted and radiated interference is within the requirements
of MIL-STD
within the requirements of CISPR Publication 11 and
Messempfaenger-Postverfuegung
F-Nummer/Funkschutzzeichen).

461C,

Part 7 RE02 and CEO3 (Air Force), and

526/527/79

“C.

(Kennzeichnung Mit

IF Section Serial Prefix 3004A and above

X-rays generated by this instrument are sufficiently screened.
Die in

abgeschirmt.
accel. voltage / beschl. spg < 20

diesem

geraet entstehende roentgenstrahlung ist ausreichend

kV

IF Section Serial Prefix 3001A and below

When operating, this instrument emits x-rays; however, it is well
shielded and meets safety and health requirements of various
countries, such as the X-Ray Radiation Act of Germany.

3-l 6 Specifications

Radiation emitted by this instrument is less than 0.5 mR/hr at a
distance of five (5) centimeters from the surface of the cathode-ray
tube. The x-ray radiation primarily depends on the characteristics of
the cathode-ray tube and its associated low-voltage and high-voltage
circuitry. To ensure safe operation of the instrument, adjust both
the low-voltage and high-voltage power supplies as outlined in the

Performance Tests and Adjustments manual (if applicable).

Replace the cathode-ray tube with either an identical CRT or an

approved retrofit kit only. If a retrofit kit is installed, the applicable

specification is for “IF Section Serial Prefix 3004A and above.”
Number of German License:
Waehrend des Betriebs erzeugt dieses Geraet Roentgenstrahlung.

Das Geraet ist so abgeschirmt, dass die Dosisleistung

weniger

Oberflaeche der Katodenstrahlroehre betraegt. Somit sind die
Sicherheitsbestimmungen verschiedener Laender, u.A. der deutschen
Roentgenverordnung eingehalten.

Die Staerke der Roentgenstrahlung haengt im Wesentlichen
von der Bauart der Katodenstrahlroehre ab, sowie von den
Spannungen,
gewaehrleisten, duerfen die Einstellungen der Niederspannungsund
des Hochspannungsnetzteils nur
vorgenommen werden.

Ersetze die Kathodenstrahlroehre entweder
oder mit einem zugelassenen Nachruestsatz. Wenn der Nachruestsatz
installiert ist,
Serien-Vornummer 3004A und darueber Gueltigkeit.

Das Geraet ist in Deutschland zugelassen unter der Nummer:

BW/50/79/ROE

als 36 PA/kg (0,5 mR/h) in 5cm Abstand von der

welche

haben

an dieser anliegen.

die Spezifikationen des ZF Teils mit der

BW/50/79/ROE

Urn

nach

der Anleitung des Handbuches

einen sicheren Betrieb zu

durch

eine identische

Specifications 3-17

Warm-Up Time

F’requency

Reference

Note

Weight

From a cold start (no line power connected to HP

8568B),

the

following conditions apply:

n

~72

hours to meet aging rate specification after

<24-hour

off

period.

n

~30

days to meet aging rate specification after indefinite off period.

n

~30

minutes to be within 1 x

(at 25

“C).

lo-”

of 24-hour warm-up frequency

If the above conditions do not apply, refer to the specifications below
under “Operation.

”

Operation

Requires 30-minute warm-up from STANDBY mode, 0 “C to 55 “C.

Internal temperature equilibrium is reached after 2-hour warm-up at
stabilized ambient temperature.

Weight

Total (net)
RF Section (net)

IF-Display Section (net)

RF Section (shipping)

IF-Display Section (shipping)

45 kg (110 lb)

24 kg (53 lb)

21 kg (47 lb)

32 kg (70 lb)
27 kg (60 lb)

3-18

Specifications

Dimensions

(Allow 100 mm, 4 inch

(Allow 100 mm, 4 inch

clearance at rear panel

clearance at rear panel

for interconnect cables.)

for interconnect cables.)

457.2 nm (18 in)457.2 nm (18 in)

TOP

p637.5

t-637.5 rm- (25.1 in)+

rm- (25.1

in)+

Figure 3-1. Instrument Dimensions with Handles

(Allow 100 rrm, 4 inch
clearance at rear panel

for interconnect cables.)

425.5 rrn- (16 75 in)

TOP

609.6 MT (24 in)

Figure 3-2. Instrument Dimensions without Handles

Specifications

3-l

9

Characteristics

Frequency

Resolution

Note

Supplemental characteristics are intended to provide information

useful in applying the instrument by giving typical, nonwarranted,

performance parameters.

0

10

a

73

20

8

z

30
E
;

4c

-

n

w 5C
2

k
1

6C

4

70

80

10 Hz 100 Hz

1

kHz

10

kHr

FREQUENCY

100

kHz

1 MHz

10

MHz

Figure 4-l. Typical Spectrum Analyzer Resolution

Characteristics 4-l

100 MHz

Stability

Drift

Because the analyzer frequency is corrected on retrace, drift occurs
only during the period of one sweep. This drift is in addition to
frequency reference error due to aging.

Spectral Purity

Frequency Span

Drift (per Minute of Sweep

Time) *

<lO

<lOO

<300

Hz

Hz

kHz

5100

kHz
> 100 kHz to 5 1 MHz

>l

MHz

I

*After 1 hour warm-up at stabilized temperature.

I

I
I

Noise Sidebands

Refer to Figures 4-2 and 4-3 for typical noise sideband performance.

Typical SSB Noise vs. Offset from Carrier

-

60

-

80

I
I

I

-

90

IiT

y-100

is

--110

-120

-130

-140

-150
10

Indicate Specified Limits

se at 20 MHz, Spans <I MHz

l

-SSB

-SSB

Hz

O@SSB

se at 500 MHz, Spans

Noi

se ot 1500

NOI
No use at 1650 MHz, Spans

Hz

100

1

FREOUENCY OFFSET FROM CARRIER

kHz

MHz,

10

Spans <t MHz

kHz

g-1

100

MHz

<lMHz

kHz

Figure 4-2.

Single Sideband Noise Normalized to 1 Hz BW

versus Offset from Carrier

100

1

MHz

10

MHz

MHz

4-2 Characteristics

Amplitude

Average Noise Level

E

7J

m

m

3

+

-90

.-

-

F-loo

-110

-120

-130

-140

-150

-50

-60

-70

-80

1

Maximum Input Level

OHz

1 OOHz

Frequency Offset From Local Oscillator Feedthrough

1

kHz

1 OkHz

(-15

IOOkHz

dBm

Typical LO Level)

+30 dBm

IMHz IOMHz

(1 watt)

IOOMHz

Figure 4-3. Typical Sensitivity vs. Input Frequency

1GHz1 OGHz

Log to Linear

Switching

Frequency Response

(Flatness) Uncertainty

Signals at the reference level in log translate to approximately full
scale signals in linear typically within f 1 .O dB at room temperature
(20 “C to 30

“C).

Frequency Response *

Input

#l

100 Hz to 500 MHz
100 Hz to 1500 MHz
1500 MHz to 1650 MHz +

Input

#2

100 kHz to 1500 MHz f0.7
1500 MHz to 1650 MHz +

*

210

dB input attenuation

f0.75
fl.O

dB

dB

l.O/-4.0 dB

dB

l.O/-4.0 dB

Characteristics 4-3

Residual Responses

Residual responses are signals generated by the analyzer independent
of input signals.

Residual Responses *

Frequency Range

100 Hz to 500 Hz

500 Hz to 1500 MHz

c-105
c-105

Residual Responses

dBm* *
dBm

* With 0 dB input attenuation and no input signal.
* * Except for line-related residuals and LO feedthrough

skirt (in the 100 Hz to 110 Hz range), typically

c-100

dBm.

Nominal dynamic range

Third Order

Intermodulation

4-4 Characteristics

Distortion

Note

-90 -80 -70 -60 -50
Effective

Input (Signal Level-input

-40

-30 -20 -10

Atten) dBm

Figure 4-4. Typical Optimum Dynamic Range

See Figure 4-4 for typical second and third order distortion
characteristics.

Dynamic range due to Third Order Intermodulation Distortion and
noise level can be calculated from

2/3 [TOI -

displayed average noise
level]. For example, at 900 MHz the analyzer’s specified dynamic
range when using the 10 Hz resolution BW is:

dBm)]

=

2/3(145)

= 96.7

dB.

2/3 [

+ 10 dBm - (-135

0

Inputs

RF INPUTS

VIDEO INP

SWR*

Tune Frequency

100 Hz to

500

MHz

Input

#l

Input

#2

*>lO dB input attenuation

Isolation

Typically >85 dB isolation between inputs.

<1.5:1
<1.5:1

500 MHz to

1500 MHz

<2.0:

<1.5:1

LO Emission

Typically

Connector BNC female, rear panel
Impedance 139
Amplitude

c-75

dBm (0 dB input attenuation)

Q

oto2v

1

IF INP

EXT TRIGGER

Connector
Impedance
Frequency
Amplitude

Connector
Impedance

Trigger Level

Maximum Input

BNC female, rear panel
50 n

21.4 MHz

-5 dBm with 10 dB input
attenuation and 0 dBm reference
level for full screen signal

BNC female, rear panel
1

kQ,

nominal

>+2.4

V

5v

Characteristics 4-5

FREQ REFERENCE

outputs

Display Outputs

Connector

Impedence

Frequency
Amplitude
Phase Noise and

Spurious Signals

X, Y, and Z outputs for auxiliary CRT displays. Compatible with
HP 1300 series displays.

onnectors

IC

Amplitude

X
Y

Z

BLANK

Rise Time

X
Y

BNC female. rear
50 Q, nominal

10 MHz

0 dBm to + 10 dBm

Analyzer performance will be degraded unless

frequency reference phase-noise and spurious
signals

are

to 10 kHz offset.

f50

5140

dBc/Hz, referred to 10 MHz at a 100 Hz

BNC female, rear panel

1 V for full deflection

1 V for full deflection
0 to 1 V intensity modulation, -1 V blank
TTL level
Compatible with most oscilloscopes.

~75

ns

<75

ns

<30

ns

Dane1

Hz

>2.4

V for blanking.

Recorder Outputs

4-6 Characteristics

SWEEP

Outputs to drive all current HP X-Y recorders using positive
or TTL

[LOWER LEFT] and [UPPER RIGHT] keys calibrate the recorder SWEEP

and VIDEO outputs with
recorders.

A voltage proportional to the horizontal sweep of the frequency
sweep generator.

Connector
Amplitude

Tmnwl2nc~

penlift

input.

0,O

and

10,l

V respectively, for adjusting X-Y

BNC female, rear panel
0 V for left edge, + 10 V for right edge

1.7 k D nominal

pencoils

VIDEO

PENLIFT

Detected video output (before A-D conversion) proportional to
vertical deflection of the CRT trace.

Connector BNC female, rear panel
Amplitude 100 mV/div from 0 to 1 V
Impedance

I

Connector

5475 62

BNC female, rear panel

0 V from 10 Q source

nominal

,

2 1.4 MHz IF OUTPUT

FREQ REFERENCE

(OUT)

+ 15 V from 10

Connector BNC female, rear panel

ImDedance 50

Frequency 2 1.4 MHz
Amplitude -20 dBm for a signal at the reference level.

Scaling Logarithmically related to the RF input signal when in

Bandwidth Controlled bv the analvzer’s resolution bandwidth setting.

Connector
Impedance
Frequency
Amplitude

0 nominal

Controlled by the input attenuator and IF step gain
positions.

log scales.

Linearly related to RF input signal when in linear scale.

BNC female, rear panel
50 0 nominal

10.000 MHz
0 dBm

kfl

source

VIDEO OUT

I Connector

Impedance
Amplitude

1

BNC female. rear

>lO 62

oto2v

Dane1

Characteristics 4-7

PROBE POWER

General

IF OUT

(front panel)

Cl

-11 dBm nominal with 10 dB input

Voltage
Current

Probe Compatibility HP 1121A (use only with with Input

+ 15 Vdc, -12.6 Vdc
150 mA maximum. each

HP 1120A
HP 85024A
HP

10855A Preamnlifier

#2)

Acoustic Noise

Emission/

Geraeuschemession

This instrument is in conformance with the “German Regulation

on Noise Declaration for Machines. ” (Laermangabe
Maschinenlaermrerordnung -3. GSGV Deutschland.)

* Test was conducted per IS0 7779

and DIN 45635 teil 1.

nach

der

4-8 Characteristics

Function Descriptions

Sweep

Free Run
Line
Video

External

Continuous Sequential sweeps initiated by the trigger.
Single

Sweep Time

HZ

Range

Span = 0

Characteristics

Sweep triggered by internal source.
Sweep triggered by power line frequency.
Sweep triggered by detected waveform of input signal at

an
adjustable level; signal must be
For sweeps of 10 ms and less (zero span) the signal must

have

>40

Hz rate.

rate,

but display will blank between triggers when sweep is

<20

ms.

Sweep triggered by rising edge of signal input to

rear-panel
BNC connector; trigger source must be

maximum).
For sweep of 10 ms and less (zero span), trigger source

must
have

>40

source rate, but display will blank between low repetition
rate

trigger when sweep is

Single sweep armed on activation and initiated by trigger
(sweep

1 ps to 10 ms in 1, 2, 5 sequence.

20 ms to 1500 s in 1, 1.5, 2, 3, 5, 7.5, 10 sequence.

[W) (VIDEO_) (KSy)

Hz rate. (SHIFT]

220

ms only).

~20

ms.

20.5

allows any envelope

IEXT_) (KSx)

div peak-to-peak.

>2.4

V (10 V

allows any trigger

Span > 0

HZ

20 ms to 1500 s in 1, 1.5, 2, 3, 5, 7.5, 10 sequence.

Characteristics 4-9

Cathode Ray Tube

Type: Post-deflection accelerator, aluminized P31 phosphor,
electrostatic focus and deflection.

Viewing Area: Approximately 9.6 cm vertically by 11 .O cm
horizontally (3.8 in x 4.7 in). The CRT is completely turned off with

(GE)

(trace B,

(CLEAR WRITE) (trace B,

KSh)

to avoid unnecessary aging of the CRT during long-term

KSg)

and on with

[SHIFT) [HOLD]

unattended operation of the analyzer.

Instrument State Storage

Up to six complete sets of user-defined control settings may be stored
and recalled by pressing SAVE or RECALL and the desired register

number (1 to 6) from the keyboard. Register 0 stores the current state

while register 7 stores the instrument state prior to the last function
change via the numeric/unit keyboard, step keys, or INSTR PRESET.

Registers 8 and 9 store the two instrument calibration states.
To lock the save registers press (SHIFT)

save registers, press

(EJ

[RECALL]

[SAVE) (KS( ).

(KS)

).

To unlock the

Instrument state information stored in registers 0 through 7 is
retained in memory for approximately 1 year in STANDBY mode or
after line power is removed and analyzer is stored between 20
30

“C.

“C

and

Remote Operation

The standard HP 8568B operates on the Hewlett-Packard Interface
Bus (HP-IB). All analyzer control settings (with the exception of
VIDEO TRIGGER LEVEL, FOCUS, ALIGN, INTENSITY, FREQ ZERO,
AMPTD CAL, and LINE power) are remotely programmable. Function
values, marker frequency/amplitude, and A/B traces may be output;
CRT labels and graphics may be input.

LCL: Returns analyzer to local control, if not locked out by controller.
Service Request:

(SHIFT] OLIN) (KSr)

calls an HP-IB request for service.

4-10

Characteristics

Operation Verification

5

What You’ll Find in
This Chapter

This chapter describes the HP
software and how to use it to verify spectrum analyzer operation.

Test System Configuration
Equipment Connections
Program Loading
Program Operation

HP-IBAddresses

Error Messages .....................................

Test Descriptions

1. Input Attenuator Switching Uncertainty

2. IF Gain Uncertainty

3. Scale Fidelity (Log)

4. Scale Fidelity (Linear)

5. Log Scale Switching Uncertainty

6. Resolution Bandwidths

7. Impulse and Resolution Bandwidths

8. Line Related Sidebands

9. Residual FM

10. RF Gain Uncertainty

11. Sweep Time Accuracy

12. Average Noise Level

13. Residual Responses

14. Frequency Span Accuracy

15. Frequency Response

16. Second Harmonic Distortion

17. Third Order Intermodulation Distortion

18. Cal Output Amplitude Accuracy

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

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

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

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

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

8568A/B

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

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

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

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

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

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

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

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

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

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

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

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

Operation Verification

........

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

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

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

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

........

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

5-5
5-5

5-7
5-7
5-9

5-10

5-10

5-11

5-12
5-13
5-14
5-15
5-16
5-17
5-18
5-19
5-20
5-2 1
5-22
5-23
5-24
5-25
5-26
5-27
5-28

Operation Verification is automatic performance test software
designed to give a high confidence level in the operation of the
HP

8568A/B

80 percent to 85 percent of the manual performance tests in
approximately 60 minutes and is designed to test an instrument
operating within a temperature range of 20 “C to 30 “C. Refer to
Table 5-l for a list of tests performed.

spectrum analyzer in a reasonable time. It performs

Operation Verification 5-1

If an HP

8568A/B

passes all Operation Verification tests, be assured
that the spectrum analyzer is performing within the specifications
indicated in each test. These specifications are representative of
the specifications listed in Chapter 3, “Specifications.” If a test
does not pass then the related manual performance test needs to
be run. Related manual performance tests are located in the HP

8568A/B Performance

lbsts

and

Adjustments

Manual (HP part number

08568-90105).

Note

Note

Note

The HP

8568A/B

Operation Verification software automates the
majority of the manual performance tests for a performance
verification. Table 5-2 lists the manual performance tests that are not
included in the automated Operation Verification software.

The validity of the measurements in the Operation Verification

program is based in part on the accuracy of the test equipment
used to perform the test. Therefore, proper calibration of the test
equipment must be verified before instrument operation can be
checked using the Operation Verification program.

Measurement uncertainties may cause the Operation Verification
program to indicate an instrument specification is out of tolerance
even though the performance test in the Tests and Adjustments

manual indicates it to be within tolerance. In this event the

Performance Test data is to be considered more valid.

The Option 462 6 dB Bandwidth instrument shares the same
Operation Verification software as the Option 462 Impluse Bandwidth
instrument. When testing the 6 dB version, Test 7 Impulse and
Resolution Bandwidths must not be performed and the following
manual tests must be performed:

n 6

dB

Resolution Bandwidth Accuracy Test

5-2 Operation Verification

n 6

dB

Resolution Bandwidth Selectivity Test

The manual tests are located in the HP 8568B rt?rfommnce

Adjustments Manual.

Zests

and

‘lhble 5-1. Tests Performed

Test Number and Name

1. Input Attenuator Switching Check

2. IF Gain Uncertainty

3. Scale Fidelity (Log)

4. Scale Fidelity (Linear)

5. Log Scale Switching

6. Resolution Bandwidths

7. Impulse and Resolution Bandwidths
(Option 462 Impulse

8. Line-Related Sidebands

9. Residual FM

10. RF Gain Uncertainty

11. Sweep Time Accuracy

12. Average Noise Level

13. Residual Responses

14. Frequency Span Accuracy

15. Frequency Response

16. Second Harmonic Distortion

17. Third Order Intermodulation Distortion

18.

Cal Output Amplitude Accuracy

‘

Alternate sources are: HP

i

Option 462 6 dB Bandwidth instruments must be manually tested. See note.

Bandwidth)t

83620A,

HP 83623A, HP

HP 3335A
HP 3335A

HP 3335A
HP 3335A
HP 3335A

none
HP 8112A or HP 8116A
HP 3335A
none

none

none
none
HP

909A,

HP

909A,

HP 3335A or
HP

83640A*

HP 3335A and
HP

83640A*

or HP
HP 8902A or HP 436A
or HP 438A
HP 8482A
HP 11667A
HP 3335A

50 MHz LPF
(HP p/n 0955-0306)

HP 83640A’
HP 8335A

HP 8721A
50 MHz LPF
(HP p/n 0955-0306,
2 required)

HP 436A, Option 022
HP 8482A

Equipment Required

Option 012
Option 012

8444A,

Option 059

83650A,

HP

8340A/B,

and

1

8341A/B.

Operation Verification 5-3

‘Ihble

5-2. Tests Not Performed

Center Frequency Readout Accuracy Test
Spurious Responses Test
Fast Sweeptime Accuracy Test

1ST

LO Output Amplitude Responses Test

Frequency Reference Error Test

‘Ikble

5-3. Equipment Summary

HP Part Number

Equipment

HP 9000 Series 200 or HP 9000 Series 300 Computer*
HP 3335A
HP 83640At
or HP

8444A,

Option 059 Tracking Generator

HP 436A or HP 438A

Frequency Synthesizer
Synthesized Sweeper

Power Meter
or HP 8902A Measuring Receiver
HP 8482A
HP

909A

Option 012

Power Sensor

50 Ohm Termination
HP p/n 0955-0306 50 MHz Low-Pass Filter (2 required)
HP 11667A Power Splitter

HP 8721A Directional Bridge

HP p/n 8120-4921

APC 3.5 Low-Loss Microwave Test Cable

HP-IB Printer
Miscellaneous Cables and Adapters
* HP 98624A HP-IB Interface is needed for dual-bus systems.

tAlternate

5-4 Operation Verification

300 K of free memory is required for the test program.

sources are: HP

83620A,

HP

83623A,

HP

8340A/B,

and HP

8341A/B.

Test System Configuration

The HP 8568A/B Operation Verification program requires an HP 9000
Series 200 or HP 9000 Series 300 computer with HP BASIC 2.0
and Extensions 2.1 or BASIC 3.0 or higher. An HP 362 or HP 382
computer can also be used and requires BASIC 6.2 or higher. The
program operates on either a single or dual HP-IB computer system.
For a dual bus system it is also necessary to have an HP 98624A HP-IB
Interface to connect the HP
the test equipment.

The Operation Verification software is designed for optimum operation
with a dual bus system. The dual bus system is used with the
Microwave Test Set (MTS). In this configuration, the bus for the test
equipment has a select code of 7, while the bus for the instrument
under test has a select code of 8. The software will adapt itself to a
single bus system if an HP 98624A HP-IB Interface at select code 8 is
not present.

8568AB

to the computer separately from

Equipment Connections

Note

The equipment needed to perform the HP
Verification is listed in both Table 5-l and
a test-by-test listing of the equipment needed, and
a test equipment summary. To obtain a permanent record of the test
results an HP-IB printer is required. The HP
may be selected to display the test results if a permanent test record
is not desired.

Because test results are expected to change over a period of time,
Hewlett-Packard warrants only the specification range and not the
repeatability of the data for any given specification.

For a dual bus system, connect the test equipment to the computer

as shown in Figure 5- 1. The instrument under test is connected
separately to the HP 98624A Interface card.

For a single bus system, connect the test equipment and instrument
under test to the computer (as shown in Figure 5-2).

Turn the HP
Also, allow sufficient warm-up time for the other test equipment as
indicated in the individual operating and service manuals.

8568A/B m

to On and allow a 2 hour warm-up.

8568A/B

‘lhble

5-3.

8568A/B

Operation

‘Iable

5-l includes

Table

5-3 includes

CRT display

Note

When connecting signals from the synthesized sweeper or tracking
generator to the test setup, it is necessary to use a high frequency
cable with minimum attenuation to 1.5

GHz.

Operation Verification 5-5

BUS to MTS System

Select Code of 7.

BUS to Unit Under Test

Select Code of 8.

(HP8568B)

Figure 5-l. Dual Bus (MTS) System Connection

5-6 Operation Verification

o MTS System

Figure 5-2. Single Bus System Connection

Program Loading

To load and run the HP

8568A/B

Operation Verification program, one

of the following HP BASIC language systems is required:

w

BASIC 2.0 with Extensions 2.1

n BASIC 3.0 or higher including the following binaries:

q

MAT

0

IO

q

GRAPH

q

HPIB

q ERR (not required but recommended)

w

BASIC 6.2 or higher must be installed in the HP 362 or HP 382.

For additional computer configuration instructions, refer to the
Installation Reference manual included with the HP BASIC language
system.

Program Operation

The HP

8568A/B

Operation Verification program stores configuration
and power sensor calibration data in files on the floppy disk. Inspect
the floppy disk to verify that it is not write-protected, and insert it
into the appropriate disk drive. Then type:

LOAD “VERIFY 68” 1
Press

[EXECUTE]

HP

9000

The Operation Verification program uses the HP

-

,

on HP 9000 Series 200 computers, or

(RETURN]

Series 300 computers, to load and run the program.

8568A/B

CRT to

on

display program options and status, and allows the user to select
options using the spectrum analyzer keyboard. The first few displays
provide the user with selection menus for configuring the software to
the available test equipment.

After the program name and revision is displayed for several seconds,
the LIST OF DEFAULTS display appears, providing the user with a
selection menu. At this point in the program, the user must enter the
HP model numbers and HP-IB addresses of the test equipment that
will be used, as well as the local ac power line frequency. To change
one of the entries, position the pointer using the front-panel knob and
press (Hz). Then, enter the appropriate HP-IB address, serial number,
line frequency, or one of the valid model numbers listed in

‘lhble

5-4.

It is sometimes desirable to perform specific Operation Verification
tests without the full set of test equipment listed in

‘Ihble

5-4.
For example, several of the tests can be performed with no test
equipment by using the spectrum analyzer CAL OUTPUT signal as an
input signal. If an item of test equipment is not available, it is not
necessary to change the corresponding default entries in the LIST OF
DEFAULTS display.

From the LIST OF DEFAULTS display, the user may proceed with the
program by pressing [Hz. However, a valid power sensor calibration

Operation Verification 5-7

data file must exist on the software disk before the program will
proceed with testing. If such a file does not exist, the program will
prompt the user to enter calibration data through the computer
keyboard. The sensor calibration data is then stored on the software
disk. An existing power sensor calibration data file may be reviewed
or modified by re-entering the power sensor serial number in the LIST

OF DEFAULTS display.
After the LIST OF DEFAULTS display, the next display allows the user

to select whether the test results will be printed out or displayed on
the spectrum analyzer CRT.

Next, the program checks to verify that each piece of test equipment
responds at its designated HP-IB address. The user is prompted with a
list of test equipment that does and does not respond, and is offered
the choice of continuing with the program, repeating the equipment
check, or returning to the LIST OF DEFAULTS display to change HP-IB
addresses. The program will automatically limit the number of tests
that can be performed, based on this list of available test equipment.

If the user chooses to proceed by pressing

a),

the program attempts
to measure the spectrum analyzer CAL OUTPUT signal, and prompts
the user to connect the CAL OUTPUT to the RF INPUT and adjust the
front-panel AMPTD CAL and FREQ ZERO controls as appropriate.
Refer to Figure 5-3 for the location of the AMPTD CAL and FREQ

ZERO controls. Once these adjustments are within tolerance, the

program activates the spectrum analyzer error correction (KSW)
routine.

Once the error correction routine has completed, a test summary is

displayed on both the computer and the spectrum analyzer. Both test
summaries provide a status report on test progress. In addition, the

test summary displayed on the spectrum analyzer provides the user
with a selection menu of individual tests. The user enters the number
of the desired test, followed by

[kHz)

to perform the test repetitively. If the user selects “All Tests”

IHz)

to perform the test one time, or

(selection 0), the program will run each of the tests in sequence,
skipping those tests that cannot be performed with the available test
equipment.

Test results are printed or displayed at the completion of each
individual test. Once a particular test is completed, the test summary
displays are updated to reflect whether the test passed.

5-8 Operation Verification

HP-IB Addresses

FREQ.

ZERO

AMPiD

CAL

C‘A

L

OUTPUT

#2

Figure 5-3. RF Input and Calibration Controls

‘Ihble

5-4 lists the default assigned addresses and test equipment. For
dual bus systems the select code for the test equipment is 7 and the
select code for the instrument under test is 8. (The address for the HP

8568A/B

under test is 818.)

In single bus systems, the select code for the test equipment is 7, and
the select code for the instrument under test is 7.

‘Ihble

5-4. BP-IB Addresses

Equipment

Frequency Synthesizer
Pulse Generator *
Power Meter

HP 8112A or HP 8116A

BP Model

HP 3335A

HP 436A

HP-IB Printer

*Required to test Option 462 Impulse Bandwidth.

Operation Verification 5-9

Address

04
16
13

01

Error Messages

Self-explanatory error messages are incorporated into the Operation

Verification program to assist you in identifying errors.

‘I&t

Descriptions

The following test descriptions list the Specifications, Related

Performance Test, and Test Description for each test performed by the
Operation Verification program. The specifications listed below are
those of each Operation Verification test and are uncorrected (where
applicable). Operation Verification is designed to test an instrument
operating within a temperature range of 20 “C to 30

“C.

5-10

Operation Verification