HP 8568B Installation and operation manual

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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 Hewlett-Rzckard products.
Pbr any assistance, contact pour nearest Hewlett-Fbckard Sales and
Service Ome.
Safety Notes
The following safety notes are used throughout this manual.
Familiarize yourself with each of the notes and its meaning before
operating this instrument.
Caution
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
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.
Instruction
Manual 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
Before this instrunwnt is switched on, make sure it has been
properly grounded through the protective conductor of the ac
power cable to a socket outlet provided with protective earth
contact.
Any interruption of the protective (grounding) conductor, inside
or outside the instrument, or disconnection of the protective
earth terminal can result in personal injury.
Warning
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.
Caution
Before this instrument is switched on, make sure its primary power
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.
V

How to Use This
Guide
This guide uses the
Front-Panel Key] This represents a key physically located on the
following
instrument.
conventions:
Screen Text This indicates text displayed on the instrument’s
screen.
HP 8568B
Documentation
Description
HP 8568B Installation
and Verification
Manual
HP 8568B Operating
and Programming
Manual
HP 8568B
Performance Tests and
Adjustments Manual
HP 85680B RF Section
Troubleshooting and
Repair Manual
HP 85662A IF-Display
Section
Troubleshooting and
Repair Manual
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. Accopanying this manual is the seperate,
pocket-sized Quick Reference Guide, HP part number 5955-8970.
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 ........
Serial Numbers ..................
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 ...............
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 ...........
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-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 ...................... 3-l
Measurement Range ................ 3-l
Displayed Values .................. 3-l
Center Frequency ................. 3-l
Range ...................... 3-l
Readout Accuracy ................
3-2
Frequency Span ..................
3-2
Range ......................
3-2
Full Span .................... 3-2
Frequency Count ..................
3-3
Resolution .....................
3-3
Resolution Bandwidth ...............
3-3
Resolution Bandwidth (Option 462 6 dB Bandwidths)
3-4
Resolution Bandwidth (Option 462 Impulse
Bandwidths) .................
3-4
Bandwidth Shape .................
3-4
Stability ......................
3-5
Residual FM ...................
3-5
Spectral Purity ...................
3-5
Power-Line-Related Sidebands ...........
3-5
Amplitude ......................
3-6
Measurement Range ................
3-6
Amplitude Measurement Range ..........
3-6
Displayed Values ..................
3-6
Scale ......................
3-6
Accuracy .....................
3-6
Reference Lines Accuracy ..............
3-7
Dynamic Range ...................
3-7
Spurious Responses ................
3-7
Residual Responses ................
3-7
Gain Compression ................
3-8
Displayed Average Noise Level (Sensitivity) ....
3-8
Amplitude Uncertainty ................
3-9
Table Footnotes ...................
3-11
Marker ........................
3-12
Sweep ........................
3-12
Inputs ........................
3-13
INPUT #l
.....................
3-13
INPUT #2
.....................
3-13
outputs .......................
3-14
CAL OUTPUT
1STLOOUTPUT : : : : : : : : : : ........
3-14
........
3-14
Options .......................
3-14
75 D Input Impedance, Option 001 ..........
3-14
INPUT #l ....................
3-14
400 Hz Power Line Frequency Operation, Option 400 .
3-15
Power Line Related Sidebands ...........
3-15
General .......................
3-16
HP-IB Interface Functions ..............
3-16
Environmental ...................
3-16
Temperature ...................
3-16
Altitude .....................
3-16
Power Requirements ................
3-16
Contents-2

Humidity ......................
3-16
Operation ....................
3-16
Storage .....................
3-16
EM1
........................
3-16
X-Rays .......................
3-16
IF Section Serial Prefix 3004A and above ......
3-16
IF Section Serial Prefix 3001A and below .....
3-16
Warm-Up Time ...................
3-18
Frequency Reference ...............
3-18
Operation ....................
3-18
Weight .......................
3-18
Dimensions .....................
3-19
4. Characteristics
Frequency ...................... 4-l
Resolution ..................... 4-l
Stability ......................
4-2
Drift .......................
4-2
Spectral Purity ...................
4-2
Noise Sidebands .................
4-2
Amplitude ......................
4-3
Average Noise Level ................
4-3
Log to Linear Switching ...............
4-3
Frequency Response (Flatness) Uncertainty ......
4-3
Residual Responses .................
4-4
Third Order Intermodulation Distortion .......
4-4
Inputs ........................
4-5
RF INPUTS .....................
4-5
Isolation .....................
4-5
LO Emission ...................
4-5
VIDEO INP
.....................
4-5
IF INP .......................
4-5
EXT TRIGGER
...................
4-5
FREQ REFERENCE (IN) ...............
4-6
outputs .......................
4-6
Display Outputs ..................
4-6
Recorder Outputs ..................
4-6
SWEEP ......................
4-6
VIDEO .......................
4-7
PENLIFT ......................
4-7
21.4 MHz IF OUTPUT ................
4-7
FREQ REFERENCE (OUT) ..............
4-7
VIDEO OUT
....................
4-7
IF OUT
......................
4-8
PROBE POWER (front panel) ............
4-8
General .......................
4-8
Acoustic Noise Emission/ Geraeuschemession .....
4-8
Function Descriptions .................
4-9
Sweep .......................
4-9
Cathode Ray Tube ................
4-10
Instrument State Storage .............
4-10
Remote Operation ................
4-10
Contents-3

5. Operation Verification
What You’ll Find in This Chapter ........... 5-l
Test System Configuration ............... 5-5
Equipment Connections ................ 5-5
Program Loading ................... 5-7
Program Operation ..................
5-7
HP-IB Addresses ................... 5-9
Error Messages .................... 5-10
Test Descriptions ................... 5-10
1. Input Attenuator Switching Uncertainty .....
5-11
2. IF Gain Uncertainty ...............
5-12
3. Scale Fidelity (Log) ............... 5-13
4. Scale Fidelity (Linear) ..............
5-14
5. Log Scale Switching Uncertainty .........
5-15
6. Resolution Bandwidths .............. 5-16
7. Impulse and Resolution Bandwidths (Opt. 462
Impulse Bandwidth) ............... 5-17
8. Line Related Sidebands .............
5-18
9. Residual FM ...................
5-19
10. RF Gain Uncertainty ..............
5-20
11. Sweep Time Accuracy ..............
5-21
12. Average Noise Level ..............
5-22
13. Residual Responses ............... 5-23
14. Frequency Span Accuracy ............
5-24
15. Frequency Response ..............
5-25
16. Second Harmonic Distortion ...........
5-26
17. Third Order Intermodulation Distortion ..... 5-27
18. Calibrator Output Amplitude Accuracy ......
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 ............
......
l-11
...... l-20
...... l-23
...... 2-25
...... 5-3
...... 5-4
...... 5-4
...... 5-9
Contents-6

1
General Information
What You’ll Find in
This chapter introduces you to the HP 8568B spectrum analyzer
This Chapter
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 ............................ l-2
Safety ............................................ l-2
Accessories Supplied ............................... 1-2
Accessories Available .............................. l-5
Options ........................................... 1-6
Instruments Covered by This Manual ............... 1-7
SerialNumbers .................................. l-7
Calibration Cycle ..................................
1-9
HP-IB Address Selection ........................... l-9
Bench Operation ..................................
1-9
Electrostatic Discharge Information .................. l-10
Static-Safe Accessories ............................ l-11
Routine Maintenance ...............................
1-12
Cleaning the Display .............................. 1-12
Cleaning the RF Section’s Fan Filter ...............
1-13
Replacing the RF Section’s Battery ................ l-13
Ordering Information ...............................
1- 18
Direct Mail-Order System ......................... 1- 18
Direct Phone-Order System ....................... l-18
Returning the Instrument for Service ................
1-19
ServiceTags ......................................
1-19
Original Packaging ................................
1-19
Other Packaging .................................. l-2 1
Sales and Service Offices ............................
1-22
General Information 1-l

Introducing the
HP 8568B
Safety
Accessories Supplied
The HP 8568B spectrum analyzer is capable of measuring signals from
-135 dBm to +30 dBm over a frequency range of 100 Hz to 1500
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.
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

FRONT VIEW
IF-Display
Sect ion
RF Section
REAR VIEW
IF-Display
Sect ion
RF Sect ion
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 HP 11593A
BNC jumper cable (quantity: 2)
85660-60117
Bus interconnect cable (W31) 85662-60220
Coax interconnect cable (W30) 85662-60093
Line power cables (2 each) see Figure l-2
General Information 1-3

t
PLUG TYPE * * Hy;A;T
PLUG
CABLE CABLE FOR USE
DESCRIPTION
LENGTH COLOR
IN COUNTRY
NUMBER a.4
(INCHES)
250V 8120-1351 Straight*
BS1363A
229 (90) Mint Gray Great
Britoln,
8120-1703 90’
229 (90) Mint
Gray
Cyprus. Niger
ia,
Singapore,
Z imbobwe
250V 8120-1369 Straight*
NZSS198/ASC112 201 (79) Gray Argentina,
8 120-0696 9o”
221 (87)
Gray
Austrollo,
New Zealand,
Mainland Chino
250V
125V
250V
8120-1689 Straight *
CEE7-Yl 1
8120-1692 90’
8120-1348 Straight*
NEMA5-15P
8120-1538 90’
8120-1378 Straight*
NEMA5- 15P
8120-4753
Straight
8120-1521 90*
8 120-4754 90’
8120-5182
Straight* NEMA5-15P
8120-5181 90°
201 (79) Mint Gray East and West
201 (79)
Mint Gray Europe,
centrcl
African Republic
United Arab
Republ ic
(unpolarized in
many nations)
203 (80) B
I ock United States
203 (80) Black Canada,
Japan (100 V or
203 (80)
Jade Gray 200 V), Brazil,
230 (90) Jade Gray Colombia, Mexico
203 (80) Philippines,
Jade Gray
Soudio Arabia,
230 (90) Jade Gray
Taiwan
200 (78) Jade Groy Israel
200 (78) Jade Gray
* Port number for plug is industry identifier for plug only. Number shown for cable is
HP Part Number for complete cable, including plug
** E = Earth Ground, L = Line; N = Neutral.
FORMAT80
Figure l-2. AC Power Cables Available
1-4 General Information

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
HP-IB Cable
Controllers
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, electromagnetic-
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 (EMI) susceptibility testing. The
HP 11941A is specified over a frequency range
of 9 kHz to 30 MHz. The HP 11940A operates
from 30 MHz to 1 GHz.
The minimum-loss pad (dc - 2.0 GHz), HP part
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 GHz and is rated
10 W continuous and 100 W peak power.
The HP 11693A Limiter is similar to the
HP 11863A but has a frequency range of 0.4
to 12.4 GHz and is rated 1 W continuous and
75 W peak power.
Use HP 10833A/B/G/D HP-IB cables.
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.
HP 85650A Quasi-Peak The HP 85650A adds to the spectrum
Adapter 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.
General Information l-5

HP 85685A RF
Preselector
Service Kits
The HP 85685A RF Preselector can be used
with an HP 8568B to form a multi-purpose RF
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 GHz.
Troubleshooting and Service information for the HP 8568B is
Repair Manual available in the HP 85680B Troubleshooting
and &pair Manual and the HP 85662A
Troubleshooting and &pair Manual.
They include schematic diagrams, block
diagrams, component location illustrations,
circuit descriptions, repair procedures, and
troubleshooting information.
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.
Options
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
Option 080
Option 081
Option 400
Option 462
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 8568B. Because of the weight of the HP 8568B,
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).
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
1-6 General Information

Option 857
Option 908
Option 910
Option 913
Option 915
EM1 and general-purpose measurements. Option
462 instruments with HP 85662A (top box) serial
prefixes below 3341A were compatable with MIL-STD
462A/B/C (impulse bandwidth).
The HP 8568B Option 857 is used in EMC receiver
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 HP 8568B Operating and Programming
Manual and an extra HP 8568B &formunce lksts
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.
Instruments Covered
This manual contains information for setup and verification of
by This Manual
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 Numbers
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.
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