HP 8590L Spectrum Analyzer Calibration Guide

HP 8590L Spectrum Analyzer Calibration Guide
About this Manual
We’ve added this manual to the Agilent website in an effort to help you support
your product. This manual is the best copy we could find; it may be incomplete
or contain dated information. If we find a more recent copy in the future, we will
add it to the Agilent website.
Support for Your Product
Agilent no longer sells or supports this product. Our service centers may be able
to perform calibration if no repair parts are needed, but no other support from
Agilent is available. You will find any other available product information on the
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HP References in this Manual
This manual may contain references to HP or Hewlett-Packard. Please note that
Hewlett-Packard's former test and measurement, semiconductor products and
chemical analysis businesses are now part of Agilent Technologies. We have
made no changes to this manual copy. In other documentation, to reduce
potential confusion, the only change to product numbers and names has been in
the company name prefix: where a product number/name was HP XXXX the
current name/number is now Agilent XXXX. For example, model number
HP8648A is now model number Agilent 8648A.
Calibration Guide
HP 8590L Spectrum Analyzer
Fia
HEWLETT
PACKARD
HP Part No. 08590-90269
Printed in USA November 1995
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 1994, 1995
All Rights Reserved. Reproduction, adaptation, or translation without prior written permission
is prohibited, except as allowed under the copyright laws.
1400 Fountaingrove Parkway, Santa Rosa, CA 95403, USA
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.
Regulatory Information
The specifications and characteristics chapter in this manual contains regulatory information.
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.
Assistance
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-FWkard products.
Fbr any assistance, contact your nearest Hewlett-Rzckard Sales and Service Ome.
...
III
Safety Symbols
The following safety symbols are used throughout this manual. Familiarize yourself with each
of the symbols and its meaning before operating this instrument.
Caution
The caution sign denotes a hazard. It calls attention to a procedure which, 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
The warning sign 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 sign until the indicated
conditions are fully understood and met.
General Safety Considerations
Warning
This is a Safety Class I product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact. Any
interruption of the protective conductor, inside or outside the instrument,
is likely to make the instrument dangerous. Intentional interruption is
prohibited.
Warning
No operator serviceable parts inside. Refer servicing to qualified
personnel. ‘lb prevent electrical shock, do not remove covers.
Caution
Before switching on this instrument, make sure that the line voltage selector
switch is set to the voltage of the power supply and the correct fuse is
installed.
Warning
These servicing instructions are for use by qualified personnel only.
‘Ib avoid electrical shock, do not perform any servicing unless you are
qualified to do so.
Warning
The opening of covers or removal of parts is likely to expose dangerous
voltages. Disconnect the instrument from all voltage sources while it is
being opened.
Warning
The power cord is connected to internal capacitors that may remain live
for 10 seconds after disconnecting the plug from its power supply.
Warning
For continued protection against fire hazard replace line fuse only with
same type and rating (F 5A/250V). The use of other fuses or material is
prohibited.
HP 8590 Series Spectrum Analyzer Documentation Description
The following guides are shipped with your spectrum analyzer:
HP 8592L Spectrum Analyzer Calibration Guio!&
Tells you how to test your spectrum analyzer to determine if the spectrum analyzer meets
its specifications.
HP 8590 E-Series and LSeries Spectrum Analyzer User’s Gui&
Tells you how to make measurements with your spectrum analyzer.
Describes the spectrum analyzer features.
w Tells you what to do in case of a failure.
n
n
HP 8590 E-Ser%es and L-Series Spectrum Analyzer Quick Reference Guide
n
n
n
Describes how to make a simple measurement with your spectrum analyzer.
Briefly describes the spectrum analyzer functions.
Lists all the programming commands.
Documentation Options
Option 041 or 043: Programmer’s Guide
Describes analyzer operation via a remote controller (computer) for the RS-232 or HP-IB
interface.
Option 910: Additional User’s Documentation
Provides an additional copy of the user’s guide, the calibration guide, and the quick
reference guide.
Option 915: Assembly-Level and Component-Level Information
Describes troubleshooting and repair of the spectrum analyzer.
Option 915 consists of two manuals:
HP 8590 E-Series and LSeries Spectrum Analyzq and HP 8591 C Cable TV Analyzer
Assembly-Level Repair Service Guide
n Describes adjustment and assembly level repair of the analyzer.
HP 8590 E-Series and L-Series Spectrum Analyzeq and HP 8591 C Cable TV Analyzq
Component-Level Information
n
Provides information for component-level repair of the spectrum analyzer.
How to Order Guides
Each of the guides listed above can be ordered individually. To order, contact your local
HP Sales and Service Office.
V
How to Use This Guide
Where to Start
If you have just received your spectrum analyzer and want to get ready for use for the first
time, do the following:
w Read Chapters 1 and 2 of the HP 8590 E-Series and L.-Series Spectrum Analyzer User’s
tiide.
n
n
Perform the initial self-calibration routines described in Chapter 2 of the HP 8590 E-Series
and LSeries Spectrum Analyzer User’s Guide (these are automatic self-checks and require
no test equipment).
If you need to verify the unit is operating within its specifications, perform the performance
verification tests in Chapter 1 of this guide.
After completing the performance verification, use the HP 8590 E-Series and LSeries Spectrum
Analyzer User’s Guide to learn how to use the spectrum analyzer and to find more detailed
information about the spectrum analyzer, its applications, and key descriptions.
This guide uses the following conventions:
Front-Panel Key)
A boxed, uppercase name in this typeface represents a key physically located
on the instrument.
Sof tkey
A boxed word written in this typeface indicates a “softkey,” a key whose label
is determined by the instrument’s firmware.
Screen Text
Text printed in this typeface indicates text displayed on the spectrum analyzer
screen.
Caution
The CAUTION symbol denotes a
which, if not correctly performed
destruction of the instrument. Do
the indicated conditions are fully
hazard. It calls attention to a procedure
or adhered to, could result in damage to or
not proceed beyond a CAUTION symbol until
understood and met.
Contents
1. Calibrating
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test equipment you will need . . . . . . . . . . . . . . . . . . . . . . . .
Recording the test results . . . . . . . . . . . . . . . . . . . . . . . . .
If the spectrum analyzer doesn’t meet specifications . . . . . . . . . . . . .
Periodically verifying operation . . . . . . . . . . . . . . . . . . . . . . .
1. 10 MHz Reference Output Accuracy . . . . . . . . . . . . . . . . . .
2. Frequency Readout and Marker Count Accuracy . . . . . . . . . . . .
3. Noise Sidebands . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. System Related Sidebands . . . . . . . . . . . . . . . . . . . . . . .
5. Frequency Span Readout Accuracy . . . . . . . . . . . . . . . . . . .
6. Residual FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Sweep Time Accuracy . . . . . . . . . . . . . . . . . . . . . . . . .
8. Scale Fidelity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Reference Level Accuracy . . . . . . . . . . . . . . . . . . . . . . .
10. Absolute Amplitude Calibration and Resolution Bandwidth Switching
Uncertainties . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. Resolution Bandwidth Accuracy . . . . . . . . . . . . . . . . . . .
12. Calibrator Amplitude Accuracy . . . . . . . . . . . . . . . . . . . .
13. Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . .
14. Other Input Related Spurious Responses . . . . . . . . . . . . . . . .
15. Spurious Response . . . . . . . . . . . . . . . . . . . . . . . . . .
16. Gain Compression . . . . . . . . . . . . . . . . . . . . . . . . . .
17. Displayed Average Noise Level . . . . . . . . . . . . . . . . . . . .
18. Residual Responses . . . . . . . . . . . . . . . . . . . . . . . . .
19. Absolute Amplitude, Vernier, and Power Sweep Accuracy . . . . . . .
20. Tracking Generator Level Flatness . . . . . . . . . . . . . . . . . .
21. Harmonic Spurious Outputs . . . . . . . . . . . . . . . . . . . . . .
22. Non-Harmonic Spurious Outputs . . . . . . . . . . . . . . . . . . .
23. Tracking Generator Feedthrough . . . . . . . . . . . . . . . . . . .
Performance Verification Test Record . . . . . . . . . . . . . . . . . . . . .
2. Specifications and Characteristics
General Specifications . . . . . . .
Frequency Specifications . . . . . .
Amplitude Specifications . . . . . .
Option Specifications . . . . . . . .
Frequency Characteristics . . . . .
Amplitude Characteristics . . . . .
Option Characteristics . . . . . . .
Physical Characteristics . . . . . .
Regulatory Information . . . . . .
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HP 85801 Spectrum Analyzer
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l-l
l-l
l-3
1-3
l-3
l-3
l-3
l-4
1-9
l-11
1-14
1-18
1-21
l-26
l-29
1-31
l-37
1-41
l-44
1-48
l-52
l-60
l-64
l-70
l-73
l-79
l-82
1-85
l-89
l-92
l-96
l-100
2-2
2-3
2-5
2-8
2-10
2-12
2-14
2-15
2-19
Contents-l
3.
If You Have a Problem
Calling HP Sales and Service Offices .
Before calling Hewlett-Packard . .
Check the basics . . . . . . . . .
Returning the Spectrum Analyzer for
Package the spectrum analyzer for
Contents-2
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. . . . .
Service .
shipment
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HP 85801 Spectrum Analyzer
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3-l
3-l
3-2
3-4
3-4
Figures
l-l. 10 MHz Reference Test Setup . . . . . . . . . . . . . . . . . . . . .
l-2. Frequency Readout Accuracy Test Setup . . . . . . . . . . . . . . .
l-3. Noise Sidebands Test Setup . . . . . . . . . . . . . . . . . . . . . .
1-4. System Related Sidebands Test Setup . . . . . . . . . . . . . . . . .
1-5. 1800 MHz Frequency Span Readout Accuracy Test Setup . . . . . . . .
l-6. 10.1 MHz to 10 kHz Frequency Span Readout Accuracy Test Setup . . .
l-7. Residual FM Test Setup . . . . . . . . . . . . . . . . . . . . . . . .
l-8. Sweep Time Accuracy Test Setup . . . . . . . . . . . . . . . . . . .
l-9. Scale Fidelity Test Setup . . . . . . . . . . . . . . . . . . . . . . .
l-10. Reference Level Accuracy Test Setup . . . . . . . . . . . . . . . . .
l-11. Uncertainty Test Setup . . . . . . . . . . . . . . . . . . . . . . . .
1-12. Resolution Bandwidth Accuracy Test Setup . . . . . . . . . . . . . .
1-13. LPF Characterization . . . . . . . . . . . . . . . . . . . . . . . .
1-14. Calibrator Amplitude Accuracy Test Setup . . . . . . . . . . . . . . .
l-15. System Characterization Test Setup (Option 001) . . . . . . . . . . . .
l-16. Frequency Response Test Setup, >50 MHz . . . . . . . . . . . . . . .
1-17. Frequency Response Test Setup, 250 MHz, for Option 001 . . . . . . .
1-18. Frequency Response Test Setup (~50 MHz) . . . . . . . . . . . . . .
1-19. Other Input Related Spurious Test Setup . . . . . . . . . . . . . . .
l-20. Second Harmonic Distortion Test Setup, 30 MHz . . . . . . . . . . . .
1-21. Third Order Intermodulation Distortion Test Setup . . . . . . . . . . .
l-22. Gain Compression Test Setup . . . . . . . . . . . . . . . . . . . . .
l-23. Displayed Average Noise Level Test Setup . . . . . . . . . . . . . . .
l-24. Residual Response Test Setup . . . . . . . . . . . . . . . . . . . . .
l-25. Absolute Amplitude, Vernier, and Power Sweep Accuracy Test Setup . .
l-26. Tracking Generator Level Flatness Test Setup . . . . . . . . . . . . .
l-27. Harmonic Spurious Outputs Test Setup . . . . . . . . . . . . . . . .
l-28. Non-Harmonic Spurious Outputs Test Setup . . . . . . . . . . . . . .
l-29. Tracking Generator Feedthrough Test Setup . . . . . . . . . . . . . .
HP 85801 Spectrum Analyzer
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l-9
l-11
1-14
1-18
l-22
l-23
l-26
1-29
1-31
l-37
1-41
1-44
l-49
l-50
l-53
l-54
l-54
l-56
1-61
1-65
1-67
1-71
l-73
l-79
1-82
l-85
1-89
l-92
l-96
Contents-3
Tables
l-l. Performance Verification Tests . . . . . . . . . . . .
1-2. Recommended Test Equipment . . . . . . . . . . . .
l-3. Recommended Accessories . . . . . . . . . . . . . .
l-4. Recommended Cables . . . . . . . . . . . . . . . .
1-5. Frequency Readout Accuracy . . . . . . . . . . . . .
l-6. Frequency Span Readout Accuracy . . . . . . . . . .
l-7. Sweep Time Accuracy . . . . . . . . . . . . . . . .
l-8. Cumulative and Incremental Error, Log Mode . . . . .
l-9. Scale Fidelity, Linear Mode . . . . . . . . . . . . . .
l-10. Reference Level Accuracy, Log Mode . . . . . . . . .
l-l 1. Reference Level Accuracy, Linear Mode . . . . . . . .
1-12. Resolution Bandwidth Switching Uncertainty . . . . .
1-13. 3 dB Resolution Bandwidth Accuracy . . . . . . . . .
1-14. EM1 Resolution Bandwidth Accuracy . . . . . . . . .
l-15. Frequency Response Errors Worksheet . . . . . . . .
1-16. Frequency Response (~50 MHz) Worksheet . . . . . .
1- 17. Image Responses Worksheet . . . . . . . . . . . . .
1-18. Displayed Average Noise Level . . . . . . . . . . . .
1-19. Residual Responses Above Display Line . . . . . . . .
l-20. Vernier Accuracy Worksheet . . . . . . . . . . . . .
1-21. Level Flatness Relative to 300 MHz Worksheet . . . . .
l-22. Harmonic Spurious Responses Worksheet . . . . . . .
l-23. Fundamental Response Amplitudes Worksheet . . . . .
l-24. Non-Harmonic Responses Worksheet . . . . . . . . .
l-25. TG Feedthrough Worksheet . . . . . . . . . . . . . .
l-26. Performance Verification Test Record . . . . . . . . .
3-l. Hewlett-Packard Sales and Service Offices . . . . . . .
Contents-4
HP 85901 Spectrum Analyzer
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l-2
1-4
l-6
l-8
1-12
1-25
l-30
1-33
l-34
l-39
l-40
l-43
l-46
l-47
1-58
1-59
l-63
l-78
1-81
1-84
1-88
1-91
1-95
l-95
l-99
L-100
3-3
Calibrating
This chapter contains performance test procedures which test the electrical performance of the
spectrum analyzer.
Allow the spectrum analyzer to warm up in accordance with the Temperature Stability
specification in Chapter 2 before performing the tests in this chapter.
None of the test procedures involve removing the cover of the spectrum analyzer.
Calibration
Calibration verifies that the spectrum analyzer performance is within all specifications listed in
Chapter 2. It is time consuming and requires extensive test equipment. Calibration consists of
all the performance tests. See Table l-l for a complete listing of the performance tests.
Operation Verification
Operation verification consists of a subset of the performance tests. See ‘Ihble l-l. Operation
verification tests only the most critical specifications of the spectrum analyzer. These tests are
recommended for incoming inspection, troubleshooting, or after repair. Operation verification
requires less time and equipment than the calibration.
HP 85901 Spectrum Analyzer
Calibrating l-l
The following table lists the performance tests included in this chapter. Select the spectrum
analyzer option being calibrated and perform the tests marked in the option column. Note that
some of the tests are used for both calibration and operation verification (marked with 0).
able l-l. Performance Verification Tests
Performance Test Name
Calibration for
Instrument
Option:
3td1
1. 10 MHz Reference Output Accuracy
2. Frequency Readout and Marker Count Accuracy
3. Noise Sidebands
4. System Related Sidebands
5. Frequency Span Readout Accuracy
6. Residual FM
7. Sweep Time Accuracy
5. Scale Fidelity
9. Reference Level Accuracy
3. Absolute Amplitude Calibration and Resolution Bandwidth
Switching Uncertainties
1. Resolution Bandwidth Accuracy
3. Calibrator Amplitude Accuracy
3. Frequency Response
4. Other Input Related Spurious Responses
5. Spurious Response*
3. Gain Compression
7. Displayed Average Noise Level
3. Residual Responses
9. Absolute Amplitude, Vernier, and Power Sweep Accuracy
1. Tracking Generator Level Flatness
1. Harmonic Spurious Outputs
I. Non-Harmonic Spurious Outputs
3. Tracking Generator Feedthrough
Use this column for alI other options not listed in this table.
2 “Part 2: Third Order Intermodulation Distortion, 50 MHz” is not required for operation
verification.
l-2 Calibrating
HP 85901 Spectrum Analyzer
Safety
Familiarize yourself with the safety symbols marked on the pulse generator, and read the
general safety instructions and the symbol definitions given in the front of this manual before
you begin verifying performance of the pulse generator.
Before You Start
There are four things you should do before starting a performance verification test:
n
n
n
Switch the spectrum analyzer on and let it warm up in accordance with the Temperature
Stability specification in Chapter 2.
Read “Making a Measurement” in Chapter 2 of the HP 8590 E-Series and L-Series Spectrum
Analyzer User’s Guide.
After the spectrum analyzer has warmed up as specified, perform the Self-Calibration
Procedure documented in “Improving Accuracy With Self-Calibration Routines” in
Chapter 2 of the HP 8590 E-Series and LSeries Spectrum Analyzer User’s Guide. The
performance of the spectrum analyzer is only specified after the spectrum analyzer
calibration routines have been run and if the spectrum analyzer is autocoupled.
H Read the rest of this section before you start any of the tests, and make a copy of the
Performance Test Record described in “Recording the Test Results.”
Test equipment you will need
Tables l-2 through 1-4 lists the recommended test equipment for the performance tests. The
tables also lists recommended equipment for the spectrum analyzer adjustment procedures
which are located in the HP 8590 E-Series and L-Series Spectrum Analyze?; and HP 8591C
Cable TV Anulyzwr Assembly-Level Repair Service Guide. Any equipment that meets the
critical specifications given in the table can be substituted for the recommended model.
Recording the test results
A performance test record is provided at the end of this chapter.
Each test result is identified as a TR Entry in the performance tests and on the performance
test record. We recommend that you make a copy of the performance test record, record the
test results on the copy, and keep the copy for your calibration test record. This record could
prove valuable in tracking gradual changes in test results over long periods of time.
If the spectrum analyzer doesn’t meet specifications
If the spectrum analyzer fails a test, rerun the frequency calibration and amplitude calibration
routines by pressing CAL FAEQ & AiPTD . Press CAL STORE, then repeat the verification test.
If the spectrum analyzer still fails one or more specifications, complete any remaining tests and
record all test results on a copy of the test record. Then refer to Chapter 3, “If You Have a
Problem,” for instructions on how to solve the problem.
HP 85901 Spectrum Analyzer
Calibrating 1-3
Periodically verifying operation
The spectrum analyzer requires periodic verification of operation. Under most conditions
of use, you should test the spectrum analyzer at least once a year with either operation
verification or the complete set of performance verification tests.
‘Ikble 1-2. Recommended Test Equipment
Critical Specifications for
Equipment Substitution
Equipment
Recommended
Model
Use1
Digital Voltmeter
Input Resistance: 2 10 megohms
Accuracy: &IO mV on 100 V range
HP 3456A
DVM Test Leads
For use with HP 3456A
HP 34118
A,T
Frequency Standard
Frequency: 10 MHz
Timebase Accy (Aging): < 1 x 10eg /day
HP 5061B
P,A
Measuring Receiver
Compatible with Power Sensors
dB Relative Mode
Resolution: 0.01 dB
Reference Accuracy: f 1.2 %
HP 8902A
EAT
Microwave Frequency
Counter
Frequency Range: 9 MHz to 7 GHz
Timebase Accy (Aging): <5 x lo-lo/day
HP 5343A
PAT
Oscilloscope
Bandwidth: dc to 100 MHz
Vertical Scale Factor of 5 V/Div
HP 54501A
T
Power Meter
Power Range: Calibrated in dBm and
dB relative to reference power -70 dBm
to + 44 dBm, sensor dependent
HP 436A
PAT
Power Sensor
Frequency Range: 100 kHz to 1800 MHz
Maximum SWR: 1.60 (100 kHz to 300 kHz)
1.20 (300 kHz to 1 MHz)
1.1 (1 MHz to 2.0 GHz)
1.30 (2.0 to 2.9 GHz)
HP 8482A
P,-%T
Power Sensor2
Frequency Range: 1 MHz to 2 GHz
Maximum SWR: 1.18 (600 kHz to 2.0 GHz) 75 0
HP 8483A
P,-%T
Power Sensor,
Low-Power
Frequency Range: 300 MHz
Amplitude Range: -20 dBm to -70 dBm
Maximum SWR: 1.1 (300 MHz)
HP 8484A
P,A,T
1 P = Performance Test, A = Adjustment, T = Troubleshooting
2 Option 001 and Option 011 Only
1-4 Calibrating
HP 85901 Spectrum Analyzer
‘Ihble l-2. Recommended Test Equipment (continued)
Equipment
Critical Specifkations for
Equipment Substitution
Recommended
Model
Signal Generator
Frequency Range: 1 MHz to 1000 MHz
Amplitude Range: -35 to + 16 dBm
SSB Noise: <- 120 dBc/Hz at 20 kHz offset
HP 8640B,
Option 002
Spectrum Analyzer,
Microwave
Frequency Range: 100 kHz to 7 GHz
Relative Amplitude Accuracy:
100 kHz to 1.8 GHz: <fl.S dB
Frequency Accuracy: <&IO kHz @ 7 GHz
HP 8566AIB
Synthesized Sweeper
Frequency Range: 10 MHz to 1.8 GHz
Frequency Accuracy (CW): f 0.02%
Leveling Modes: Internal and External
Modulation Modes: AM
Power Level Range: -35 to + 16 dBm
HP 8340AlB
synthesizer/Function
Generator
Frequency Range:
0.1 Hz to 500 Hz
Frequency Accuracy: f0.02%
Waveform: Triangle
HP 3325B
synthesizer/Level
Generator
Frequency Range: 1 kHz to 80 MHz
Amplitude Range: + 12 to -85 dBm
Flatness: f0.15 dB
Attenuator Accuracy: ho.09 dB
HP 3335A
Use1
I P = Performance Test, A = Adjustment, T = Troubleshooting
HP 85901 Spectrum Analyzer
Calibrating 1-5
‘Ih.ble 1-3. Recommended Accessories
Equipment
Critical Specifications for
Accessory Substitution
Recommended
Model
Use1
Active Probe
5 Hz to 500 MHz
300 kHz to 3 GHz
HP 418OOA
HP 85024A
T
Adapter
APC 3.5 (f) to APC 3.5 (f)
5061-5311
P,A,T
Adapter
BNC (f) to dual banana plug
1251-1277
P,A,T
Adapter
BNC (m) to BNC (m)
1250-0216
4dapter2
BNC (m) to BNC (m), 75 t?
1250-1288
EAT
4dapter
BNC (f) to SMB (m)
1250-1237
AT
qdapter
BNC tee (m) (f) (f)
1250-0781
T
Adapter
Type N (f) to APC 3.5 (f)
1250-1745
P,A,T
Adapter
Type N (f) to APC 3.5 (m)
1250-1750
Mapter
Type N (m) to APC 3.5 (m)
1250-1743
P,-%T
idapter
rype N (f) to BNC (f)
1250-1474
PAT
idapter
rype N (f) to BNC (m)
1250-1477
PAT
Ldapter2
Yype N (f) to BNC (m), 75 R
1250-1534
P,-%T
4dapter
Type N (m) to BNC (f) (4 required)
1250-1476
P,A,T
4dapter
hype N (m) to BNC (m) (2 required)
1250-1473
9dapter
bw N (0 to N (0
1250-1472
PAT
Adapter
bw N (ml to N (ml
1250-1475
PAT
Adapter
be N (f) to N (f), 75 Q
1250-1529
P,A,T
4dapter2
Type N (f), 75 R, to Type N (m), 50 R
1250-0597
P,A,T
idapter
;MB (f) to SMB (f)
1250-0692
-%T
Adapter
SMB (m) to SMB (m)
1250-0813
AT
idapter2
Minimum Loss
i0 to 75 0, matching
% equency Range: dc to 2 GHz
nsertion Loss: 5.7 dB
HP 11852B
P,A,T
1 P = Performance Test, A = Adjustment, T = Troubleshooting
2 Option 001 and Option 011 Only
l-6 Calibrating
HP 85901 Spectrum Analyzer
Th.ble 1-3. Recommended Accessories (continued)
Critical Specifications for
Accessory Substitution
Equipment
Recommended
Model
Use1
HP 8491A
Option 010
P,A,T
Attenuator. 10 dB
Type N (m to f)
Frequency: 300 MHz
Attenuator,
1 dB Step
Attenuation Range: 0 to 12 dB
Frequency Range: 50 MHz
tConnectors: BNC female
HP 355C
f’,A
Attenuator,
10 dB Step
Attenuation Range: 0 to 30 dB
1Frequency Range: 50 MHz
JConnectors: BNC female
HP 355D
P,A
Digital Current
Tracer
Sensitivity: 1 mA to 500 mA
1Frequency Response: Pulse trains to 10 MHz
1Minimum Pulse Width: 50 ns
1Pulse Rise Time: <200 ns
HP 547A
T
Directional Bridge
1Frequency Range: 0.1 to 110 MHz
1Directivity: >40 dB
1Maximum VSWR: l.l:l
l’ransmission Arm Loss: 6 dB (nominal)
(Coupling Arm Loss: 6 dB (nominal)
HP 8721A
P,T
Logic Pulser
rITL voltage and current drive levels
HP 546A
T
Logic Clip
rl’TL voltage and current drive levels
HP 548A
T
Low-Pass Filter,
50 MHz
(Cutoff Frequency: 50 MHz
I iejection at 80 MHz: >50 dB
0955-0306
P,T
Low-Pass Filter,
300 MHz
(:utoff Frequency: 300 MHz
I3andpass Insertion Loss: <O.Q dB
at 300 MHz
!stopband Insertion Loss: >40 dB
at 435 MHz
0955-0455
PAT
Power Splitter
Irrequency Range: 50 kHz to 1.8 GHz
I nsertion Loss: 6 dB (nominal)
(jutput Tracking: <0.25 dB
Iequivalent Output SWR: < 1.22: 1
HP 11667A
P,A
fermination, 50 0
I mpedance: 50 R (nominal)
HP QOBA
P,T
HP QOQE
Ootion 201
P,T
(2 required for Option 010)
fermination, 75 f12
I mpedance: 75 D (nominal)
(2 required for option 011)
1 P = Performance Test, A = Adjustment, T = Troubleshooting
! Option 001 and Option 011 Only
HP 95901 Spectrum Analyzer
C a l i b r a t i n g l-7
‘lhble 1-4. Recommended Cables
Critical Specifications for
Cable Substitution
Equipment
Recommended
Model
Cable
Type N, 183 cm (72 in)
HP 11500A
Cable
Type N, 152 cm (60 in)
HP 11500D
Cable
Frequency Range: dc to 1 GHz
Length: 291 cm (36 in)
Connectors: BNC (m) both ends
(4 required)
HP 10503A
Cable
Frequency Range: dc to 310 MHz
Length: 20 cm (9 in)
Connectors: BNC (m) both ends
HP 10502A
Cable2
BNC, 75 0, 30 cm (12 in)
5062-6452
Cable2
BNC, 75 R, 120 cm (48 in)
15525-80010
Cable, Test
Length: 291 cm (36 in)
Connectors: SMB (f) to BNC (m)
85680-60093
(2 required)
1 P = Performance Test, A = Adjustment, T = Troubleshooting
2 Option 001 and Option 011 Only
l-9 Calibrating
HP 85901 Spectrum Analyzer
Use1
1. 10 MHz Reference Output Accuracy
1. 10 MHz Reference Output Accuracy
The settability is measured by changing the setting of the digital-to-analog converter (DAC)
which controls the frequency of the timebase. The frequency difference per DAC step is
calculated and compared to the specification.
The related adjustment for this performance test is the “10 MHz Frequency Reference
Adjustment. ”
Equipment Required
Frequency counter
Frequency standard
Cable, BNC, 122 cm (48 in) (2 required)
SPECTRUM ANALYZER
FREQUENCY
STANDARD
MICROWAVE
,’
\,
I
/
BNC
CABLE
ASSEMBLY
BNC CABLE
XC6 1
ASSEMBLY
Figure l-l. 10 MHz Reference Test Setup
Procedure
The test results will be invalid if REF UNLK is displayed at any time during this test. REF UNLK
will be displayed if the internal reference oscillator is unlocked to the 10 MHz reference. a REF
UNLK might occur if there is a hardware failure or if the jumper between 10 MHz REF OUTPUT
and EXT REF IN on the rear panel is removed.
1. Connect the equipment as shown in Figure l-l.
2.
Set the frequency counter controls as follows:
SAMPLERATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Midrange
50fVlMOSWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5OD
10 Hz-500 MHz/500 MHz-26.5 GHz SWITCH . . . . . . . . . . . . . . . . . . . . . 10 Hz-500 MHz
FREQUENCY STANDARD (Rear panel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . EXTERNAL
3.
Wait for the frequency counter reading to stabilize. Record the frequency counter reading
in the 10 MHz Reference Accuracy Worksheet as Counter Reading 1.
4.
Set the spectrum analyzer by pressing the following keys:
[FREQUENCY) -37 (Hz)
ICALl More 1 of 4 More 2 of 4
VERIFY TIMEfjASE
5.
Record the number in the active function block of the spectrum analyzer in the 10 MHz
Reference Accuracy Worksheet as the Timebase DAC Setting.
HP 95901 Spectrum Analyzer
Calibrating 1-9
1. 10 MHz Reference Output Accuracy
6. Add one to the Timebase DAC Setting recorded in step 5, then enter this number using the
DATA keys on the spectrum analyzer. For example, if the timebase DAC setting is 105, press
1,0,6 (HzJ.
7. Wait for the frequency counter reading to stabilize. Record the frequency counter reading
in the 10 MHz Reference Accuracy Worksheet as Counter Reading 2.
8. Subtract one from the Timebase DAC Setting recorded in step 5, then enter this number
using the DATA keys on the spectrum analyzer. For example, if the timebase DAC setting is
105, press 1, 0, 4, (Hz).
9. Wait for the frequency counter reading to stabilize. Record the frequency counter reading
in the 10 MHz Reference Accuracy Worksheet as Counter Reading 3.
10 MHz Reference Accuracy Worksheet
Description
Measurement
Counter Reading 1
Hz
Timebase DAC Setting
Counter Reading 2
Hz
Counter Reading 3
Hz
10. Calculate the frequency settability by performing the following steps:
w Calculate the frequency difference between Counter Reading 2 and Counter Reading 1.
Calculate the frequency difference between Counter Reading 3 and Counter Reading 1.
n Divide the difference with the greatest absolute value by two and record the value as
TR Entry 1 of the performance test record. The settability should be less than f150 Hz.
w Press [PRESET] on the spectrum analyzer. The timebase DAC will be reset automatically to
the value recorded in step 5.
n
l-l 0 Calibrating
HP 95901 Spectrum Analyzer
2. Frequency Readout and Marker Count Accuracy
2. Frequency Readout and Marker Count Accuracy
The frequency readout accuracy of the spectrum analyzer is tested with an input signal of
known frequency. By using the same frequency standard for the spectrum analyzer and the
synthesized sweeper, the frequency reference error is eliminated.
The related adjustment for this performance test is the “Sampler Match Adjustment.”
Equipment Required
Synthesized sweeper
Adapter, Type N (f) to APC 3.5 (m)
Adapter, APC 3.5 (f) to APC 3.5 (f)
Cable, Type N, 183 cm (72 in)
Cable, BNC, 122 cm (48 in)
Additional Equipment for Option 001
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 s1
Caution
Use only 75 Q cables, connectors, or adapters on the 75 61 input of an
Option 001 or damage to the input connector will occur.
SYNTHESIZED
RF OU TPUT
INPUT 5012
ADAPTER
ADAPTER
\
Q
TYPE
N CABLE
ASSEMBLY
I
---------
XC62
I * OPTION 001 ONLY’
---------I
Figure 1-2. Frequency Readout Accuracy Test Setup
HP 95901 Spectrum Analyzer
Calibrating l-l 1
2. Frequency Readout and Marker Count Accuracy
Procedure
This performance test consists of two parts:
Part 1: Frequency Readout Accuracy
Part 2: Marker Count Accuracy
Perform “Part 1: Frequency Readout Accuracy” before “Part 2: Marker Count Accuracy.”
Part 1: Frequency Readout Accuracy
1. Connect the equipment as shown in Figure 1-2. Remember to connect the 10 MHz REF OUT
of the synthesized sweeper to the EXT REF IN of the spectrum analyzer.
2. Perform the following steps to set up the equipment:
n
Press INSTRUMENT PRESET on the synthesized sweeper, then set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 GHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 dBm
n
Press CPRESET) on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
1.5 (GHz)
&2om
FREQUENCY]
n
n
Press
CPEAK
SEARCH)
on the spectrum analyzer to measure the frequency readout accuracy.
Record the MKR frequency reading in the performance test record. The reading should be
within the limits shown in Table l-5.
n
Change to the next spectrum analyzer span setting listed in Table l-5.
n
Repeat steps 3 through 5 for each spectrum analyzer span setting listed in Iable l-5.
‘hble 1-5. Frequency Readout Accuracy
Spectrum Analyzer I
Span
(MHz)
l-l 2 Calibrating
MKR Reading
TR Entry
Max.
Min.
(MHz) (Actual) (MHz)
HP 95901 Spectrum Analyzer
I
2. Frequency Readout and Marker Count Accuracy
Part 2: Marker Count Accuracy
Perform “Part 1: Frequency Readout Accuracy” before performing this procedure.
1. Press CPRESETJ on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer to measure the marker count accuracy by pressing the following keys:
m RES 3W AUTO MAN 300 m
(MKR- MK COUMT ON OFF (ON)
More 1 of 2
CNT RES AUTO MAN [email protected]
2. Press
( PEAK
SEARCH),
then wait for a count be taken (it may take several seconds).
3. Record the CNTR frequency reading as TR Entry 5 of the performance test record. The
reading should be within the limits of 1.4999989 GHz and 1.5000011 GHz.
4. Change the spectrum analyzer settings by pressing the following keys:
(XQl(MHz)
(-1 MK COUNT ON OFF (ON)
More 1 of 2
CNT RES AUTO MAN 10 IHz)
5. Press
[ PEAK
SEARCH],
then wait for a count be taken (it may take several seconds).
6. Record the CNTR frequency reading as TR Entry 6 of the performance test record. The
reading should be within the limits of 1.49999989 GHz and 1.50000011 GHz.
HP 95901 Spectrum Analyzer
Calibrating l-1 3
3. Noise Sidebands
A 500 MHz CW signal is applied to the input of the spectrum analyzer. The marker functions
are used to measure the amplitude of the carrier and the noise level 10 kHz, 20 kHz, and
30 kHz above and below the carrier. The difference between these two measurements is
compared to specification after the result is normalized to 1 Hz.
There are no related adjustment procedures for this performance test.
Equipment Required
Signal generator
Cable, Type N, 183 cm (72 in)
Additional Equipment for 75 Q Input
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 0
Caution
Use only 75 fl cables, connectors, or adapters on instruments with 75 fl inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
SIGNAL GENERATOR
J
INPUT
RF OUTPUl
.YPE
I
N CABI-E
ASSEMBLY
- - - - - - - - -
XY13
* OPTION 001 ONLY’
---------I
Figure l-3. Noise Sidebands Test Setup
1-14 Calibrating
HP 85901 Spectrum Analyzer
3. Noise Sidebands
Procedure
This performance test consists of three parts:
Part 1: Noise Sideband Suppression at 10 kHz
Part 2: Noise Sideband Suppression at 20 kHz
Part 3: Noise Sideband Suppression at 30 kHz
Perform part 1 before performing part 2 or part 3 of this procedure.
A worksheet is provided at the end of this procedure for calculating the noise sideband
suppression.
Part 1: Noise Sideband Suppression at 10 kHz
1. Perform the following steps to set up the equipment:
n
Set the signal generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 MHz
OUTPUT LEVEL. .....................................................................
0 dBm
AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INT
RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON
n
n
Connect the equipment as shown in Figure l-3.
Press I-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
2. Press the following spectrum analyzer keys to measure the carrier amplitude.
[PEAK SEARCH]
(jjFCTN) MK TRACK OM OFF (ON)
piJ2i-J~
BW
kHz
VID BW AUTO MAM 30 (Hz)
(NlKR)#K TRACK OM OFF (OFF)
(SGL)
Wait for the completion of a sweep, then press
( PEAK
SEARCH).
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Carrier
Amplitude.
3. Press the following spectrum analyzer keys to measure the noise sideband level at + 10 kHz:
MARKER A 10 (kHz)
m MARKER MORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at + 10 kHz.
HP 95901 Spectrum Analyzer
Calibrating l-l 5
3. Noise Sidebands
4. Press the following spectrum analyzer keys to measure the noise sideband level at -10 kHz:
[PEAK S E A R C H )
MARKER h -1OlkHz)
m MARKER NORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at -10 kHz.
5. Record the more positive value, either Noise Sideband Level at + 10 kHz or Noise Sideband
Level at -10 kHz from the Noise Sideband Worksheet as the Maximum Noise Sideband
Level.
6. Subtract the Carrier Amplitude from the Maximum Noise Sideband Level at 10 kHz using the
equation below.
Noise Sideband Suppression = Maximum Noise Sideband Level - Carrier Amplitude
7. Record the Noise Sideband Suppression at 10 kHz in the performance verification test record
as TR Entry 1. The suppression should be s-60 dBc.
Part 2: Noise Sideband Suppression at 20 kHz
1. Press the following spectrum analyzer keys to measure the noise sideband level at + 20 kHz:
INIKR) MARKER A 200
MARKER MORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at +20 kHz.
2. Press the following spectrum analyzer keys to measure the noise sideband level at -20 kHz:
[PEAK S E A R C H )
MARKER A -200
(MKR) MARKER NORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at -20 kHz.
3. Record the more positive value, either Noise Sideband Level at +20 kHz or Noise Sideband
Level at -20 kHz from the Noise Sideband Worksheet as the Maximum Noise Sideband
Level.
4. Subtract the Carrier Amplitude from the Maximum Noise Sideband Level at 20 kHz using the
equation below.
Noise Sideband Suppression = Maximum Noise Sideband Level - Carrier Amplitude
5. Record the Noise Sideband Suppression at 20 kHz in the performance verification test record
as TR Entry 2. The suppression should be s-70 dBc.
l-l 6 Calibrating
HP 95901 Spectrum Analyzer
3. Noise Sidebands
Part 3: Noise Sideband Suppression at 30 kHz
1. Press the following spectrum analyzer keys to measure the noise sideband level at + 30 kHz:
INIKR) MARKER A [email protected]
MARKER NORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at + 30 kHz.
2. Press the following spectrum analyzer keys to measure the noise sideband level at -30 kHz:
[PEAK SEARCH]
MARKER A -300
INIKR) MARKER NORMAL
Record the MKR amplitude reading in the Noise Sideband Worksheet as the Noise Sideband
Level at -30 kHz.
3. Record the more positive value, either Noise Sideband Level at +30 kHz or Noise Sideband
Level at -30 kHz from the Noise Sideband Worksheet as the Maximum Noise Sideband
Level.
4. Subtract the Carrier Amplitude from the Maximum Noise Sideband Level at 30 kHz using the
equation below.
Noise Sideband Suppression = Maximum Noise Sideband Level - Carrier Amplitude
5. Record the Noise Sideband Suppression at 30 kHz in the performance verification test record
as TR Entry 3. The suppression should be L-75 dBc.
Noise Sideband Worksheet
Description
Carrier
Measurement
Amplitude
f
dBm or dBmV
Noise Sideband Level at + 10 kHz
dBm or dBmv
Noise Sideband Level at - 10 kHz
dBm OT dBmv
Maximum Noise Sideband Level at f10 kHz
dBm or dBmv
Noise Sideband Level at + 20 kHz
dBm OT dBmv
Noise Sideband Level at -20 kHz
dBm or dBmv
Maximum Noise Sideband Level at f20 kHz
dBm or dBmv
Noise Sideband Level at + 30 kHz
dBm or dBmv
Noise Sideband Level at -30 kHz
dBm or dBmv
Maximum Noise Sideband Level at f30 kHz
dBm or dBmv
Note that the resolution bandwidth is normalized to 1 Hz as follows:
1 Hz noise-power = (noise-power in dBc) - (10 x log[RBW])
For example, -60 dBc in a 1 kHz resolution bandwidth is normalized to -90 dBc/Hz.
HP 95901 Spectrum Analyzer
C a l i b r a t i n g l-17
4. System Related Sidebands
A 500 MHz CW signal is applied to the input of the spectrum analyzer. The marker functions
are used to measure the amplitude of the carrier and the amplitude of any system related
sidebands >30 kHz above and below the carrier. System related sidebands are any internally
generated line related, power supply related or local oscillator related sidebands.
There are no related adjustment procedures for this performance test.
Equipment Required
Signal generator
Cable, Type N, 183 cm (72 in)
Additional Equipment for 75 Q Input
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 62
Caution
Use only 75 62 cables, connectors, or adapters on instruments with 75 D inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
SIGNAL GENERATOR
\
,’
1
RF OUTPUl
--------I
I I OPTION 001 ONLY
---------I
XY13
Figure 1-4. System Related Sidebands Test Setup
1-l 9 Calibrating
HP 85901 Spectrum Analyzer
4. System Related Sidebands
Procedure
1. Perform the following steps to set up the equipment:
Set the signal generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,500 MHz
OUTPUT LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBm
AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INT
RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON
Connect the equipment as shown in Figure l-4.
Press c-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
F R E Q U E N C Y ) 500 IrvrHz)
[email protected]@
2. Set the spectrum analyzer to measure the system related sideband above the signal by
performing the following steps:
w Press the following keys:
[PEAK SEARCH)
[MKRFCTN_) MK TRACK ON OFF (ON)
VID BW AUTO MAN 30 (Hz)
Allow the spectrum analyzer to stabilize for approximately 1 minute. Then press the
following keys:
IjMKRFCTN) MK TRACK ON OFF (OFF)
[FREQUENCY) CF STEP AUTO MAN 130 (kHz)
w Press (SGLSWP) and wait for the completion of the sweep. Press
MARKER h .
n
( PEAK
SEARCH],
then
Press the following spectrum analyzer keys:
[FREQUENCY]
a (step-w key)
HP 85901 Spectrum Analyzer
Calibrating l-l 9
4. System Related Sidebands
3. Measure the system related sideband above the signal by pressing @X?FF] on the spectrum
analyzer. Wait for the completion of a new sweep, then press CPEAK SEARCH].
4. Record the Marker-A Amplitude as TR Entry 1 of the performance verification test record.
The system related sideband above the signal should be c-65 dB.
5. Set the spectrum analyzer to measure the system related sideband below the signal by
pressing the following spectrum analyzer keys:
a (step-down key)
QIJ (step-down key)
6. Measure the system related sideband below the signal by pressing [SGLj. Wait for the
completion of a new sweep, then press [ PEAK SEARCH ).
Record the Marker-A Amplitude as TR Entry 2 of the performance verification test record.
The system related sideband below the signal should be c-65 dB.
l-20 Calibrating
HP 95901 Spectrum Analyzer
5. Frequency Span Readout Accuracy
5. Frequency Span Readout Accuracy
For testing each frequency span, two synthesized sources are used to provide two
precisely-spaced signals. The spectrum analyzer marker functions are used to measure this
frequency difference and the marker reading is compared to the specification.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized Sweeper
Synthesizer/Level Generator
Signal Generator
Power Splitter
Adapter, Type N (m) to Type N (m)
Adapter, Type N (f) to APC 3.5 (f)
Cable, Type N, 183 cm (72 in)
Cable, Type N, 152 cm (60 in)
Additional Equipment for 75 Q Input
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 fl
Procedure
This performance test consists of two parts:
Part 1: 1800 MHz Frequency Span Readout Accuracy
Part 2: 10.1 MHz to 10 kHz Frequency Span Readout Accuracy
Perform “Part 1: 1800 MHz Frequency Span Readout Accuracy” before “Part 2: 10.1 MHz to
10 kHz Frequency Span Readout Accuracy.”
Part 1: 1800 MHz Frequency Span Readout Accuracy
1. Connect the equipment as shown in Figure l-5. Note that the Power Splitter is used as a
combiner.
2. Press (PRESET) on the spectrum analyzer, then wait for the preset routine to finish.
3. Press INSTRUMENT PRESET on the synthesized sweeper and set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . .1700 MHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-5 dBm
4. On the signal generator, set the controls as follows:
FREQUENCY (LOCKED MODE) . . . . . . . . . . . . . . . . . . . . . . . . 200 MHz
CW OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBm
HP 85901 Spectrum Analyzer
Calibrating 1-21
5. Frequency Span Readout Accuracy
Caution
Use only 75 D cables, connectors, or adapters on instruments with 75 D inputs,
or damage to the input connector will occur.
SYNTHESIZED SWEEPER
SPECTRUM ANALYZER
SIGNAL GENERATOR
RF OUTPUT
RF OUTPUT
ADAPTER
POWER SPLITTER
TYPE N CABLE ASSEMBLY
TYPE N CABLE ASSEMBLY
r--------1
, * OPTION 001 ONLY,
------we-
Figure 1-5. 1800 MHz Frequency Span Readout Accuracy Test Setup
5. Adjust the spectrum analyzer center frequency, if necessary, to place the lower frequency on
the second vertical graticule line (one division from the left-most graticule line).
6. On the spectrum analyzer, press l-1. Wait for the completion of a new sweep, then
press the following keys:
CPEAK S E A R C H ] MARKER A NEXT PEAK
The two markers should be on the signals near the second and tenth vertical graticule lines
(the first graticule line is the left-most).
7. Press MARKER A , then continue pressing NEXT PK RIGWT until the marker A is on the
right-most signal (1700 MHz).
8. Record the MKR A frequency reading as TR Entry 1 of the performance verification test
record.
The MKR reading should be within the 1446 MHz and 1554 MHz.
1-22 Calibrating
HP 85901 Spectrum Analyzer
5. Frequency Span Readout Accuracy
Caution
Use only 75 fl cables, connectors, or adapters on instruments with 75 62 inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
SYNTHESIZER/LEVEL
GENERATOR
SIGNAL GENERATOR
RF OUTPUT
INPUT 50R
ADAPTER
POWER SPLITTER
I
d
\
TYPE
N CABLE
ASSEMBLY
TYPE
N CABLE
/
ASSEMBLY
----I
I---*OPTION 001 ONLY
I ---------I
Figure 1-6. 10.1 MHz to 10 kHz Frequency Span Readout Accuracy Test Setup
HP 95901 Spectrum Analyzer
Calibrating 1-23
5. Frequency Span Readout Accuracy
Part 2: 10.1 MHz to 10 kHz Frequency Span Readout Accuracy
Perform “Part 1: 1800 MHz Frequency Span Readout Accuracy” before performing this
procedure. An additional step to measure the frequency span accuracy at 1 kHz is included for
spectrum analyzers equipped with Option 130.
1. Connect the equipment as shown in Figure l-6. Note that the Power Splitter is used as a
combiner.
2. Press L-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
FREQUENCY) 70 m
b 10.1 m
3. Press INSTRUMENT PRESET on the synthesized sweeper, then set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74 MHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . -5 dBm
4. Set the synthesizer/level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBm
5. Adjust the spectrum analyzer center frequency to center the two signals on the display.
6. On the spectrum analyzer, press [SGLSWPI). Wait for the completion of a new sweep, then
press the following keys:
[ P E A K S E A R C H ) MARKER a NEXT PEAK
The two markers should be on the signals near the second and tenth vertical graticule lines
(the first graticule line is the left-most).
7. Record the MKR-A frequency reading in the performance test record as TR Entry 2. The
MKR-A frequency reading should be within the limits shown.
8. Press (MKR), More i of 2 , then MARKER ALL OFF on the spectrum analyzer.
9. Change to the next equipment settings listed in ‘lhble l-6.
10. On the spectrum analyzer, press CsGLSWP). Wait for the completion of a new sweep, then
press the following keys:
[ P E A K S E A R C H ] MARKER n NEXT PEAK
11. Record the MKR-A frequency reading in the performance test record.
12. Repeat steps 8 through 11 for the remaining spectrum analyzer span settings listed in
‘Iable l-6.
1-24 Calibrating
HP 95901 Spectrum Analyzer
5. Frequency Span Readout Accuracy
‘Ihble 1-6. Frequency Span Readout Accuracy
Spectrum Analyzer Synthesizer/Level Synthesized Sweeper
Span Setting
Generator
Frequency
Frequency
MKR-A Reading
MHz
MHz
Min.
TR Entry
10.10 MHz
66.000
74.000
7.70 MHz
2
8.30 MHz
10.00 MHz
66.000
74.000
7.80 MHz
3
8.20 MHz
lOO.OOkHz
69.960
70.040
78.00 kHz
4
82.00kHz
99.00 kHz
69.960
70.040
78.00 kHz
5
82.06kHz
10.00 kHz
69.996
70.004
7.80 kHz
6
8.20 kHz
HP 95901 Spectrum Analyzer
Max.
C a l i b r a t i n g l-25
6. Residual FM
This test measures the inherent short-term instability of the spectrum analyzer LO system.
With the analyzer in zero span, a stable signal is applied to the input and slope-detected on
the linear portion of the IF bandwidth filter skirt. Any instability in the LO transfers to the
IF signal in the mixing process. The test determines the slope of the IF filter in Hz/dB and
then measures the signal amplitude variation caused by the residual FM. Multiplying these two
values yields the residual FM in Hz. The narrow bandwidth options use a 300 Hz span. This
span is not specified, however, it is tested in “Frequency Span Accuracy. ”
There are no related adjustment procedures for this performance test.
Equipment Required
Signal generator
Cable, Type N, 183 cm (72 in)
Additional Equipment for 75 Q Input
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 62
Caution
Use only 75 0 cables, connectors, or adapters on instruments with 75 D inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
SIGNAL GENERATOR
\
F’
[email protected][email protected]~ @
-
TYPE
N CABLE
ASSEMBLY
---m---eI
1, OPTION 001 ONLY
---,---,-I
RF OUTPUl
/
XY13
Figure l-7. Residual FM Test Setup
Procedure
This performance test consists of two parts:
Part 1: Determining the IF Filter Slope
Part 2: Measuring the Residual FM
1-26 Calibrating
8
HP 65901 Spectrum Analyzer
6. Residual FM
Fart 1: Determining the IF Filter Slope
1. Connect the equipment as shown in Figure l-7.
2. Set the signal generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 MHz
CW OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 dBm
CW OUTPUT (75 61 input on&) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4 dBm
3. Press C-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
500 (MHz)
&[email protected]
FREQUENCY]
75 62 input Only: Press C-1, More 1 of 2, Amptd Units , then d&r.
(rn]-9(dBm)
SCALE LOG LIN (LOG) 1 IclB)
Isw]l(kHz)
4. On the spectrum analyzer, press the following keys:
CPEAK S E A R C H )
(j-1 MK TRACK ON OFF (ON)
Wait for the AUTO ZOOM message to disappear. Press the following spectrum analyzer keys:
(-1 MARKER +REF LVL
LMKR] MARKER 1 ON OFF (OFF)
5. On the spectrum analyzer, press the following keys:
(ymiiFSWP)
[ P E A K S E A R C H ) MARKER A
If you have difficulty achieving the fO.l dB setting, then make the following spectrum
analyzer settings:
(SPAN)50
(EiVJ VID BW AUTO MAN 30 IHz)
6. Rotate the spectrum analyzer knob counterclockwise until the MKR-A amplitude reads
- 1 dB fO.1 dB. Press MARKER A . Rotate the knob counterclockwise until the MKR-A
amplitude reads -4 dB fO.l dB.
7. Divide the MKR-A frequency in hertz by the MKR-A amplitude in dB to obtain the slope of
the resolution bandwidth filter. For example, if the MKR-A frequency is 1.08 kHz and the
MKR-A amplitude is 3.92 dB, the slope would be equal to 275.5 Hz/dB. Record the result
below:
Slope
HP 85801 Spectrum Analyzer
Hz/ dB
C a l i b r a t i n g l-27
6. Residual FM
Part 2: Measuring the Residual FM
8. On the spectrum analyzer, press IFV1KR), More 1 of 2 , MARKER ALL OFF
, [PEAK
SEARCH),
then MARKER A . Rotate the knob counterclockwise until the MKR-A amplitude reads
- 3 dB f O . l dB.
9. On the spectrum analyzer, press the following keys:
(MKRI MARKER NORMAL
[E--t_) MARKER +CF
IBW) IJ’ID BW AUTO MAN 1 @
Press @ZiGGJ
Note
The displayed trace should be about three divisions below the reference level.
If it is not, press ITRIG), SWEEP CONT SGL (CONT), [FREQUENCY], and use the
knob to place the displayed trace about three divisions below the reference
level. Press (sGLJ.
10. On the spectrum analyzer, press (j-1, MORE 1 of 2, MARKER -+PK-PK . Read the
MKR-A amplitude, take its absolute value, and record the result as the Deviation.
Deviation
11. Calculate the Residual FM by multiplying the Slope recorded in step 7 by the Deviation
recorded in step 10.
Record this value as TR Entry 1 of the performance verification test record. The residual
FM should be less than 250 Hz.
1-28 Calibrating
HP 85801 Spectrum Analyzer
dB
7. Sweep Time Accuracy
7. Sweep Time Accuracy
This test uses a synthesizer function generator to amplitude modulate a 500 MHz CW signal
from another signal generator. The spectrum analyzer demodulates this signal in zero span to
display the response in the time domain. The marker delta frequency function on the spectrum
analyzer is used to read out the sweep time accuracy.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesizer/function generator
Signal generator
Cable, Type N, 152 cm (60 in)
Cable, BNC, 120 cm (48 in)
Additional Equipment for Option 001
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 0
Caution
Use only 75 f? cables, connectors, or adapters on the 75 61 input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
INPUT 5017
SYNTHESIZER
FUNCTION GENERATOR
MAIN SIGNAL
TYPE
------___
‘* OPTION 001 ONLY
L--------l
N CABLE
(AM
SIGNAL GENERATOR
‘“I
RF OUTPUT
ASSEMBLY
XY16
I
Figure 1-8. Sweep Time Accuracy Test Setup
Procedure
1. Set the signal generator to output a 500 MHz, -10 dBm, CW signal. Set the AM and FM
controls to OFF.
Option 001 only: Set the output to -4 dBm.
2. Set the synthesizer function generator to output a 500 Hz, +5 dBm triangle waveform
signal.
3. Connect the equipment as shown in Figure 1-8.
HP 85801 Spectrum Analyzer
Calibrating 1-29
7. Sweep Time Accuracy
4. Press CPRESET) on the spectrum analyzer and wait for the preset to finish. Set the controls as
follows:
(MKR) MK TRACK ON OFF (ON)
ISPAN) 50IkHz)
Wait for the AUTO ZOOM routine to finish then press the following spectrum analyzer keys:
(SPAN) ZERO SPAN
lsw)3(MHz)
( S W E E P T I M E ) 2 0 [ms)
[AMPLITUDEI) SCALE LOG LIN (LIN)
Adjust signal amplitude for a mid-screen display.
5. Set the signal generator AM switch to the AC position.
6. On the spectrum analyzer, press the following keys:
(TRIG) VIDEO
Adjust the video trigger so that the spectrum analyzer is sweeping.
7. Press CsGLSWP). After the completion of the sweep, press [PEAK SEARCH). If necessary, press
NEXT PK LEFT until the marker is on the left most signal. This is the “marked signal.”
8. Press MARKER A , MARKER A, then NEXT PK RIGHT until the marker A is on the eighth
signal peak. Record the marker A reading in the performance test record as indicated in
‘lable l-7.
9. Repeat steps 6 through 8 for the remaining sweep time settings listed in ‘lhble l-7.
‘Ihble 1-7. Sweep Time Accuracy
Spectrum Analyzer
l-30 Calibrating
Synthesizer/Level
Generator Frequency
TR Entry Maximum
(MKR A) Reading
500 Hz
1
16.6 ms
100 Hz
2
83.0 ms
10 Hz
3
830.0 ms
1 Hz
4
8.3 s
HP 95901 Spectrum Analyzer
8. Scale Fidelity
8. Scale Fidelity
A 50 MHz CW signal is applied to the INPUT 50 61 of the analyzer through two step attenuators.
The attenuators increase the effective amplitude range of the source. The amplitude of the
source is decreased in 10 dB steps and the analyzer marker functions are used to measure the
amplitude difference between steps. The source’s internal attenuator is used as the reference
standard. The test is performed in both log and linear amplitude scales.
The related adjustment for this performance test is “Log and Linear Amplitude Adjustment.”
Equipment Required
Synthesizer/level generator
Attenuator, 1 dB step
Attenuator, 10 dB step
Cable, BNC, 122 cm (48 in)
Cable, BNC, 20 cm (9 in)
Adapter, Type N (m) to BNC (f)
Adapter, Type BNC (m) to BNC (m)
Additional Equipment for Option 001
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 61
Caution
Use only 75 D cables, connectors, or adapters on the 75 D input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
INPUT 5On
L,,--
ADAPTER
ATTENUATOR
ATTENUATOR
/
----s---B
I I OPTION 001 ONLY
,----,,--I
XY17
I
Figure l-9. Scale Fidelity Test Setup
HP 95901 Spectrum Analyzer
Calibrating 1-31
8. Scale Fidelity
Procedure
Log Scale
1. Set the synthesizer/level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +lOdBm
AMPTD INCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.05 dB
OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5061
2. Connect the equipment as shown in Figure l-9. Set the 10 dB step attenuator to 10 dB
attenuation and the 1 dB step attenuator to 0 dB attenuation.
Option 001 o&y: Set the attenuation of the 10 dB step attenuator to 0 dB. Connect the
minimum loss pad to the INPUT 75 D using adapters.
3. Press C-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
FREQUENCY) 50 (MHz)
&IO=
Option 001 only: Press (AMPLITUDE), More 1 of 2, Amptd Units, then dE%m.
(PEAK SEARCH)
c-1 MK TRACK ON OFF (ON)
IsPAN)50(iGJ
Wait for the auto zoom routine to finish, then set the resolution bandwidth and the video
bandwidth by pressing the following keys:
IBW)
RES BW AUTO %AN 3 m
VID BW AUTO KIAN 30 a
4. If necessary, adjust the 1 dB step attenuator attenuation until the MKR amplitude reads
between 0 dBm and -1 dBm.
5. On the synthesizer/level generator, press AMPLITUDE and use the increment keys to adjust
the amplitude until the spectrum analyzer MKR amplitude reads 0 dBm kO.05 dB.
It may be necessary to decrease the resolution of the amplitude increment of the
synthesizer/level generator to 0.01 dB to obtain a MKR reading of 0 dBm f0.05 dB.
6. On the spectrum analyzer, press
(PEAK
SEARCH)
then MARKER A .
7. Set the synthesizer/level generator AMPTD INCR to 4 dB.
8. On the synthesizer/level generator, press AMPLITUDE, then increment down to step the
synthesizer/level generator to the next lowest nominal amplitude listed in Table l-8.
9. Record the Actual MKR A amplitude reading in the performance test record as indicated in
Table l-8. The MKR amplitude should be within the limits shown.
10. Repeat steps 8 through 9 for the remaining synthesizer/level generator Nominal Amplitudes
listed in Table l-8.
l-32 Calibrating
HP 85901 Spectrum Analyzer
8. Scale Fidelity
11. For each Actual MKR A reading recorded in ‘lkble l-8, subtract the previous Actual MKR
A reading. Add 4 dB to the number and record the result as the incremental error in the
performance test record as indicated in ‘Ihble l-8. The incremental error should not exceed
0 . 4 dB/4 dB.
‘able 1-8. Cumulative and Incremental Error, Log Mode
tT
Synthesizer/Level
dB from
Generator
Ref Leve
Nominal Amplitude [nominal
TR Entry
Cumulative Error
(MKR A Reading)
Min. (dB
9ctllal (dB]
Max. (dB
T
TR Entry
(Incrementa
Error)
TR Entry
+lOdBm
0
0 (Ref)
0 (Ref)
0 (Ref)
0 VW
+GdBm
-4
-4.34
1
-3.66
18
+2 dBm
-8
-8.38
2
-7.62
19
-2 dBm
-12
-12.42
3
-11.58
20
-6 dBm
-16
- 16.46
4
- 15.54
21
- 10 dBm
-20
-20.50
5
- 19.50
22
-14 dBm
-24
-24.54
6
-23.46
23
-18 dBm
-28
-28.58
7
-27.42
24
-22 dBm
-32
-32.62
8
-31.38
25
-26 dBm
-36
-36.66
9
-35.34
26
-30 dBm
-40
-40.70
10
-39.30
27
-34 dBm
-44
-44.74
11
-43.26
28
-38 dBm
-48
-48.78
12
-47.22
29
-42 dBm
-52
-52.82
13
-51.18
30
-46 dBm
-56
-56.86
14
-55.14
31
-50 dBm
-60
-60.90
15
-59.10
32
-54 dBm
-64
-64.94
16
-63.06
N/A
-58 dBm
-68
-68.98
17
-67.02
N/A
Linear Scale
12. Set the synthesizer/level generator controls as follows:
AMPLITUDE . . . . . . . . . . . .............................. ............ + 10 dBm
AMPTD INCR . . . . . . . . . . .............................. . . . . . . . . . . . . . . 0 . 0 5 dB
13. Set the 1 dB step attenuator to 0 dB attenuation.
HP 85901 Spectrum Analyzer
Calibrating 1-33
8. Scale Fidelity
14. Press [PRESET) on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
[AMPLITUDE) SCALE LOG LIM (LIN)
Option 001 only: Press More i of 2 , INPUT 2 50 R 75 R (50 62).
FREQUENCY] 50 IhnHz)
LlOW
[PEAK S E A R C H )
(MKRFCTN- MK TRACK OM OFF (ON)
(SPAN) 50IkHz)
Wait for the auto zoom routine to finish, then set the resolution bandwidth and the video
bandwidth by pressing the following keys:
RES BW AUTO MAN 3 IkHz)
VID BW AUTO MAN 3O[Hzl
15. If necessary, adjust the 1 dB step attenuator attenuation until the MKR reads
approximately 223.6 mV. It may be necessary to decrease the resolution of the amplitude
increment of the synthesizer/level generator to 0.01 dB to obtain a MKR reading of
223.6 mV f 0.4 mV.
16. On the synthesizer/level generator, press AMPLITUDE, then use the increment keys to
adjust the amplitude until the spectrum analyzer MKR amplitude reads 223.6 mV 50.4 mV.
17. On the spectrum analyzer, press
[PEAK
SEARCH],
C-1, then MK TRACK ON OFF (OFF).
18. Set the synthesizer/level generator amplitude increment to 3 dB.
19. On the synthesizer/level generator, press AMPLITUDE, then increment down to step the
synthesizer/level generator to the next lowest Nominal Amplitude listed in ‘Ihble l-9.
20. Record the MKR amplitude reading in the performance test record as indicated in Table l-9.
The MKR amplitude should be within the limits shown.
21. Repeat steps 21 and 22 for the remaining synthesizer/level generator Nominal Amplitudes
listed in ‘Ihble l-9.
‘able 1-9. Scale Fidelity, Linear Mode
% of
MKR Reading
Synthesizer/Level
Ref Level
Generator
Nominal Amplitude (nomid) Min. (mV) TR Entry Max. (mV)
1-34 Calibrating
+lOdBm
100
0 (Ref)
0 (Refl
0 (Ref)
+7dBm
70.7
151.59
33
165.01
+4 dBm
50
105.36
34
118.78
+l dBm
35.48
72.63
35
86.05
-2 dBm
25
49.46
36
82.88
HP 85901 Spectrum Analyzer
8. Scale Fidelity
Log to Linear Switching
22. Set the 10 dB step attenuator to 10 dB attenuation and the 1 dB step attenuator to 0 dB
attenuation.
23. Set the synthesizer controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 dBm
24. On the spectrum analyzer, press [M], then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
lew]300(kHz)
25. On the spectrum analyzer, press the following keys:
(PEAK S E A R C H ]
(j-j MARKER +REF LVL
[PEAK SEARCH]
26. Record the peak marker reading in Log mode below.
Log Mode Amplitude ReadingdBm
27. Press c-1 SCALE LOG LIN (LIN) to change the scale to linear, then press
More 1 of 2 , &ptd Units, and dBm to set the amplitude units to dBm.
28. Press
CPEAK
SEARCH],
then record the peak marker amplitude reading in linear mode.
Linear Mode Amplitude ReadingdBm
29. Subtract the Linear Mode Amplitude Reading from the Log Mode Amplitude Reading, then
record this value ad the Log/Linear Error.
Log/Linear Error
dB
30. If the Log/Linear Error is less than 0 dB, record this value as TR Entry 37 in the
performance test record. The absolute value of the reading should be less than 0.25 dB. If
the Log/Linear Error is greater than 0 dB, continue with the next step.
31. On the spectrum analyzer, press the following keys:
[MKR] MARKER +REF LVL
CPEAK S E A R C H )
32. Record the peak marker amplitude reading in linear mode.
Linear Mode Amplitude ReadingdBm
33. On the spectrum analyzer, press the following keys:
( AMPLITUDE]
SCALE LOG LIN (LOG)
(PEAK SEARCH)
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-35
8. Scale Fidelity
34. Record the peak marker reading in Log mode below.
Log Mode Amplitude ReadingdBm
35. Subtract the Log Mode Amplitude Reading from the Linear Mode Amplitude Reading, then
record this value ad the Linear/Log Error.
Linear/Log Error
dB
36. Record the Linear/Log Error as TR Entry 37 in the performance test record. The absolute
value of the reading should be less than 0.25 dB.
1-36 Calibrating
HP 66901 Spectrum Analyzer
9. Reference Level Accuracy
9. Reference Level Accuracy
A 50 MHz CW signal is applied to the INPUT 50 61 of the spectrum analyzer through two
step attenuators. The attenuators increase the effective amplitude range of the source.
The amplitude of the source is decreased in 10 dB steps and the spectrum analyzer marker
functions are used to measure the amplitude difference between steps. The source’s internal
attenuator is used as the reference standard. The test is performed in both log and linear
amplitude scales.
It is only necessary to test reference levels as low as -90 dBm (with 10 dB attenuation) since
lower reference levels are a function of the spectrum analyzer microprocessor manipulating the
trace data. There is no error associated with the trace data manipulation.
The related adjustment for this procedure is “Al2 Cal Attenuator Error Correction.”
Equipment Required
Synthesizer/level generator
Attenuator, 1 dB steps
Attenuator, 10 dB steps
Cable, BNC 122 cm (48 in) (two required)
Adapter, Type N (m) to BNC (f)
Adapter, BNC (m) to BNC (m)
Additional Equipment for Option 001
Adapter, minimum loss
Adapter, Type N (f) to BNC (m) 75 61
Caution
Use only 75 D cables, connectors, or adapters on the 75 Q input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
SYNTHESIZER/LEVEL
GENERATOR
\
/’
q &g 8;;g 0” 000 ;I; @-.
0 00
0; EB o”88 B
-
son
INPUT 50R
m---e
I*
I
, ADAPTER
I
; MINIMUM
, LOSS
, ADAPTER
L---e
ADAPTER
- - - - - - - - I * OPTION 001 ONLY’
XY17
h---,---,1
Figure l-10. Reference Level Accuracy Test Setup
HP 65901 Spectrum Analyzer
Calibrating 1-37
9. Reference Level Accuracy
Procedure
Log Scale
1. Set the synthesizer/level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1OdBm
AMPTDINCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10dB
OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5061
2. Connect the equipment as shown in Figure l-10. Set the 10 dB step attenuator to 10 dB
attenuation and the 1 dB step attenuator to 0 dB attenuation.
Option 001 only: Connect the minimum loss adapter to the RF input 75 61, using adapters,
and set the 10 dB step attenuator to 0 dB attenuation.
3. Press (PRESET] on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
(MKR- MK TRACK ON OFF (ON)
@Zion 001 only: Press
[ AMPLITUDE ),
More 1 of 2, Amptd Units, then dElm .
-20 m SCALE LOG LIM (LOG) 1 @
(930
VID 3W AUTO MAN 30IHz)
[AMPLITUDE)
4. Set the 1 dB step attenuator to place the signal peak one to two dB (one to two divisions)
below the reference level.
5. On the spectrum analyzer, press the following keys:
(SGL]
[PEAK SEARCH]
MARKER A
6. Set the synthesizer/level generator amplitude and spectrum analyzer reference level
according to Table l-10. At each setting, press CsGLJ on the spectrum analyzer.
7. Record the MKR A amplitude reading in the performance test record as indicated in
‘lhble l-10. The MKR A reading should be within the limits shown.
1-39 Calibrating
HP 65901 Spectrum Analyzer
9. Reference Level Accuracy
‘Ihble l-10. Reference Level Accuracy, Log Mode
T
T
4
Spectrum Analyzer
Synthesizer/Level
ienerator Amplitude
Reference Level
Pm)
WW
MKR A Readinl
- ‘dB)
L
Min.
l’R Entry
Max.
-10
-20
) (ReS
0 UW
) (Ref)
0
-10
-0.4
1
+ 0.4
+ 10
0
-0.5
2
+ 0.5
-20
-30
-0.4
3
+ 0.4
-30
-40
-0.5
4
+0.5
-40
-50
-0.8
5
+ 0.8
-50
-60
-1.0
6
+l.O
-60
-70
-1.1
7
+l.l
-70
-80
-1.2
8
+1.2
-80
-90
-1.3
9
+ 1.3
Linear Scale
8. Set the synthesizer/level generator amplitude to -10 dBm.
9. Set the 1 dB step attenuator to 0 dB attenuation.
10. Set the spectrum analyzer controls as follows:
CAMPLITUDEJ--2oIdBm_)
SCALE LOG LIN (LIN)
1 of 2 Amptd Units dE%m
CSWEEP- SWEEP CONT SGL (CONT)
m More 1 of 2 MARKER ALL OFF
[AMPLITUDE)MCC~
11. Set the 1 dB step attenuator to place the signal peak one to two divisions below the
reference level.
12. On the spectrum analyzer, press the following keys:
pzmiq
A
[MKR] MK TRACK ON OFF (OFF)
[PEAK SEARCH)
MARKER
13. Set the synthesizer/level generator amplitude and spectrum analyzer reference level
according to Table l-11. At each setting, press [SGL) on the spectrum analyzer.
14. Record the MKR A amplitude reading in Table l-11. The MKR A reading should be within
the limits shown.
HP 65901 Spectrum Analyzer
Calibrating 1-39
9. Reference Level Accuracy
‘Ihble l-11. Reference Level Accuracy, Linear Mode
Synthesizer/Level
Spectrum Analyzer
3enerator Amplitude
Reference Level
l-40 Calibrating
MKR A Reading (dB)
Pm)
(mm)
Min.
-10
-20
0 VW
0 (Ref)
0 (Ref)
0
-10
-0.4
10
+ 0.4
+ 10
0
-0.5
11
+ 0.5
-20
-30
-0.4
12
+0.4
-30
-40
-0.5
13
+ 0.5
-40
-50
-0.8
14
+ 0.8
-50
-60
-1.0
15
+l.O
-60
-70
-1.1
16
+ 1.1
-70
-80
-1.2
17
+1.2
-80
-90
-1.3
18
+1.3
HP 95901 Spectrum Analyzer
TR Entry Max.
10. Absolute Amplitude Calibration and Resolution Bandwidth Switching Uncertainties
10. Absolute Amplitude Calibration and Resolution Bandwidth
Switching Uncertainties
To measure the absolute amplitude calibration uncertainty the input signal is measured after
the self-Cal routine is finished.
To measure the resolution bandwidth switching uncertainty an amplitude reference is taken
with the resolution bandwidth set to 3 kHz using the marker-delta function. The resolution
bandwidth is changed to settings between 3 MHz and 1 kHz and the amplitude variation is
measured at each setting and compared to the specification. The span is changed as necessary
to maintain approximately the same aspect ratio.
The related adjustment procedure for this performance test is “Crystal and LC Bandwidth
Adjustment. ”
Equipment Required
Cable, BNC, 23 cm (9 in)
Adapter, Type N (m) to BNC (f)
Additional Equipment for Option 001
Cable, BNC, 75 61, 30 cm (12 in)
Caution
Use only 75 61 cables, connectors, or adapters on the 75 61 input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
INPUT 5OQ
iQ
ADAPTER
XYllO
Figure l-11. Uncertainty Test Setup
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-41
10. Absolute Amplitude Calibration and Resolution Bandwidth Switching Uncertainties
Procedure
1. Connect the CAL OUT to the spectrum analyzer input using the BNC cable and adapter, as
shown in Figure l-l 1.
Sorption 001 only: Use the 75 61 cable and omit the adapter.
2. Press [PRESETI) on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer controls by pressing the following keys:
e35&m
BW
kHz
VID 3W AUTO MAN 3001Hz]
Option 001 only: Press(~j,More 1 of 2, Amptd Units, then dl3m.
[AMPLITUDEI) -20 m
SCALE LOG LIN (LOG) la
3. Press (PEAK
record.
SEARCH),
then record the marker reading in TR Entry 1 of the performance test
The marker reading should be within -20.15 and -19.85 dB.
4. Press (PRESET] on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer controls by pressing the following keys:
PEAK SEARCH_)
(j-1 MK TRACK ON OFF (ON)
Option 001 only: Press (AMPLITUDE), More 1 of 2 , Amptd Units , then dl3m.
(SPAN] 500
-20 m
SCALE LOG LIM (LOG) 1 (XJ
Isw)3(kHz)
VID l3W AUTO MAN 1 IkHz)
(AMPLITUDE]
5. Press [AMPLITUDE] and use the knob to adjust the reference level until the signal appears one
division below the reference level, then press the following keys:
[PEAK
SEARCH)
MARKER a
[MKRFCTN) MK TRACK ON OFF (OFF)
6. Set the spectrum analyzer resolution bandwidth and span according to ‘lhble 1-12.
7. Press [PEAK SEARCH), then record the MKR A TRK amplitude reading in the performance test
record as indicated in ‘Pable 1-12.
The amplitude reading should be within the limits shown.
8. Repeat steps 6 through 7 for each of the remaining resolution bandwidth and span settings
listed in Table l-12.
1-42 Calibrating
HP 85901 Spectrum Analyzer
10. Absolute Amplitude Calibration and Resolution Bandwidth Switching Uncertainties
‘lhble 1-12. Resolution Bandwidth Switching Uncertainty
Spectrum Analyzer
MKR A TRK Amplitude Reading
RES BW Setting SPAN Setting Min. (dB) TR Entry Max. (dB
3 kHz
50 kHz
0 VW
0 (Ref)
0 (Ref)
1 kHz
50 kHz
-0.5
2
+0.5
9 kHz
50 kHz
-0.4
3
+ 0.4
10 kHz
50 kHz
-0.4
4
+ 0.4
30 kHz
500 kHz
-0.4
5
+0.4
100 kHz
500 kHz
-0.4
6
+ 0.4
120 kHz
500 kHz
-0.4
7
+ 0.4
300 kHz
5 MHz
-0.4
8
+ 0.4
1 MHz
10 MHz
-0.4
9
+ 0.4
3 MHz
10 MHz
-0.4
10
+0.4
HP 85801 Spectrum Analyzer
Calibrating 1-43
11. Resolution Bandwidth Accuracy
The output of a synthesizer/level generator is connected to the input of the spectrum analyzer.
Measurements are performed in zero span to reduce the measurement uncertainty.
The frequency of the synthesizer/level generator is set to the center of the bandwidth-filter
response. The synthesizer output is then reduced in amplitude by either 3 dB or 6 dB to
determine the reference point. A marker reference is set and the synthesizer output is
increased to its previous level.
The frequency of the synthesizer is reduced then recorded when the resulting marker
amplitude matches the previously set marker reference. The synthesizer frequency is increased
so that it is tuned on the opposite point on the skirt of the filter response. The frequency
is once again recorded and the difference between the two frequencies is compared to the
specification.
The related adjustments for this performance test are:
CAL AMPTD and CAL FREQ Self-Cal Routines
Crystal and LC Filter Adjustments
Equipment Required
Synthesizer/level generator
Cable, BNC, 122 cm (48 in)
Adapter, Type N (m) to BNC (f)
Additional Equipment for 75 Q Input
Cable, BNC (75 fI), 122 cm (48 in)
Caution
Use only 75 62 cables, connectors, or adapters on instruments with 75 62 inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
SYNTHESIZER/LEVEL
GENERATOR
XY117
Figure 1-12. Resolution Bandwidth Accuracy Test Setup
1-44 Calibrating
HP 85801 Spectrum Analyzer
11. Resolution Bandwidth Accuracy
Procedure
1. Connect the equipment as shown in Figure 1-12.
75 61 input: Connect the 75 D cable to the OUTPUT 7562 connector of the synthesizer/level
generator.
3 dB Bandwidths
2. Set the synthesizer/level generator controls as follows:
75 0 input: Set the 50 51175 s1 switch to 75 D
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBm
AMPTD INCR . . . . . . . . . . . . . . . . . . . . . . .3 dB
FREQUENCY . . . . . . . . . . . . . . . . . . . 50 MHz
3. Press (j-j on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
[FREQUENCY]
50 (MHz)
LSPAN) ZERO SPAN
Isw]3m
VID 3W AUTO MAN 30IHz)
(AMPLITUDE]
SCALE LOG LIN (LOG) [email protected]
4. On the synthesizer/level generator set MANUAL TUNE ON/OFF to ON.
5. On the spectrum analyzer press a.
6. Adjust the frequency of the synthesizer/level generator for a maximum marker reading.
It will be necessary to adjust the MANUAL TUNE DIGIT resolution on the synthesizer/level
generator for the best compromise between tuning speed and resolution.
Adjust the synthesizer/level generator amplitude to place the peak of the signal at or below
the top graticule.
7. On the synthesizer/level generator, press AMPLITUDE and INCR a (step-down key).
8. Press (jMARKER] on the spectrum analyzer.
9. On the synthesizer/level generator, press INCR @) (step-up key).
10. On the synthesizer/level generator, press FREQUENCY. Lower the frequency of the
synthesizer/level generator by adjusting the knob until the marker delta amplitude is
0.0 f 0.05 dB.
11. Record the synthesizer/level generator frequency readout in column 1 of lable 1-13.
12. Using the synthesizer/level generator knob, raise the frequency so that the marker-delta
amplitude is maximum. Continue increasing the frequency until the marker reads
0.0 zt 0.05 dB.
13. Record the synthesizer/level generator frequency readout in column 2 of Table 1-13.
14. Adjust the synthesizer/level generator frequency for maximum amplitude.
15. Repeat steps 5 through 14 for each of the RES BW settings listed in Table 1-13.
HP 95901 Spectrum Analyzer
Calibrating 1-45
11. Resolution Bandwidth Accuracy
16. Subtract the Synthesizer Lower Frequency from the Synthesizer Upper Frequency. Record
the difference as the Resolution Bandwidth Accuracy, in the performance verification test
record as indicated in Table 1-13.
RES BW Accuracy = Upper Frequency - Lower Frequency
‘Ihble 1-13. 3 dB Resolution Bandwidth Accuracy
Spectrum Analyzer
RES BW
Column 1
Synthesizer
Lower Frequency
Column 2
Synthesizer
Upper Frequency
TR Entry
(Resolution Bandwidth
Accuracy)
3 MHz
1
1 MHz
2
300 kHz
3
100 kHz
4
30 kHz
5
10 kHz
6
3 kHz
7
1 kHz
6 d.B EMI Bandwidths
17. Set the synthesizer/level generator AMPTD INCR to 6 dB.
18. On the spectrum analyzer, press the following keys:
(swl EM1 BW MENU 9 kHz EM1 BW
INIKR) MARKER NORMAL
19. On the synthesizer/level generator, press FREQUENCY. Adjust the frequency for a
maximum marker reading.
20. On the synthesizer/level generator, press AMPLITUDE and INCR @J (step-down key).
21. Press
[ MARKER
DELTA ]
on the spectrum analyzer.
22. On the synthesizer/level generator, press INCR @ (step-up key).
23. On the synthesizer/level generator, press FREQUENCY. Lower the frequency of the
synthesizer/level generator by adjusting the knob until the marker-delta amplitude is
0.0 f 0.05 dB.
24. Record the synthesizer/level generator frequency readout in column 1 of ‘Iable 1-14.
25. Using the synthesizer/level generator knob, increase the frequency so that the marker-delta
amplitude is maximum. Continue increasing the frequency until the marker reads
0.0 f 0.05 dB.
l-46 Calibrating
HP 95901 Spectrum Analyzer
11. Resolution Bandwidth Accuracy
26. Record the synthesizer/level generator frequency readout in column 2 of ‘&ble 1-14.
27. Adjust the synthesizer/level generator frequency for maximum marker amplitude.
28. Repeat steps 18 through 26 for the 120 kHz EM1 RES BW .
29. Subtract the Synthesizer Lower Frequency from the Synthesizer Upper Frequency. Record
the difference as the Resolution Bandwidth Accuracy, in the performance verification test
record as indicated in l%ble 1-14.
RES BW Accuracy = Upper Frequency - Lower Frequency
‘Ikble 1-14. EM1 Resolution Bandwidth Accuracy
Spectrum Analyzer
RES BW
Column 1
Synthesizer
Lower Frequency
Column 2
Synthesizer
Upper Frequency
TR Entry
(Resolution Bandwidth
Accuracy)
9 kHz
9
120 kHz
10
HP 95901 Spectrum Analyzer
C a l i b r a t i n g l-47
12. Calibrator Amplitude Accuracy
This test measures the accuracy of the spectrum analyzer CAL OUT signal. The first part of
the test characterizes the insertion loss of a Low Pass Filter (LPF) and 10 dB Attenuator. The
harmonics of the CAL OUT signal are suppressed with the LPF before the amplitude accuracy
is measured using a power meter.
Calibrator Frequency is not included in this procedure because it is a function of the Frequency
Reference (CAL OUT Frequency = 300 MHz f [300 MHz x Frequency Reference]). Perform the
10 MHz Reference Output Accuracy test (Test 1) to verify the CAL OUT frequency.
The related adjustment for this performance test is the “Calibrator Amplitude Adjustment.”
Equipment Required
Synthesized sweeper
Measuring receiver (used as a power meter)
Power meter
Power sensor, low power with a 50 MHz reference attenuator
Power sensor, 100 kHz to 1800 MHz
Power splitter
10 dB Attenuator, Type N (m to f), de-12.4 GHz
Filter, low pass (300 MHz)
Cable, Type N, 152 cm (60 in)
APC 3.5 (f) to Type N (f)
Adapter, Type N (f) to BNC (m) (two required)
Adapter, Type N (m) to BNC (f)
Additional Equipment for 75 fl Input
Adapter, minimum loss
Adapter, mechanical, 75 0 to 50 62
Adapter, Type N (f) 75 D to BNC (m) 75 a2
Procedure
This performance test consists of two parts:
Part 1: LPF, Attenuator and Adapter Insertion Loss Characterization
Part 2: Calibrator Amplitude Accuracy
Perform “Part 1: LPF, Attenuator and Adapter Insertion Loss Characterization” before
“Part 2: Calibrator Amplitude Accuracy. ”
A worksheet is provided at the end of this procedure for calculating the corrected insertion loss
and the calibrator amplitude accuracy.
1-48 Calibrating
HP 85901 Spectrum Analyzer
12. Calibrator Amplitude Accuracy
4. Connect the equipment as shown in Figure 1-13. Connect the low-power power sensor
directly to the power splitter (bypass the LPF, attenuator, and adapters). Wait for the
power sensor to settle before proceeding with the next step.
5. On the measuring receiver, press RATIO mode. The power indication should be 0 dB.
6. On the power meter, press the dB REF mode key. The power indication should be 0 dB.
7. Connect the LPF, attenuator and adapters as shown in Figure 1-13.
8. Record the measuring receiver reading in dB in the worksheet as the Mismatch Error. This
is the relative error due to mismatch.
9. Record the power meter reading in dB in the worksheet as the Uncorrected Insertion Loss.
This is the relative uncorrected insertion loss of the LPF, attenuator and adapters.
10. Subtract the Mismatch Error (step 8) from the Uncorrected Insertion Loss (step 9). This is
the corrected insertion loss. Record this value in the worksheet as the Corrected Insertion
Loss.
Example: If the Mismatch Error is + 0.3 dB and the Uncorrected Insertion Loss is
-10.2 dB, subtract the mismatch error from the insertion loss to yield a corrected reading
of -10.5 dB.
Part 2: Calibrator Amplitude Accuracy
Perform “Part 1: LPF, Attenuator and Adapter Insertion Loss Characterization” before
performing this procedure.
Caution
Use only 75 62 cables, connectors, or adapters on instruments with 75 9 inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
;OPTION 001
ONLY
POWER METER
:
----
POWER
SENSOR
ADAPTER
1OdB
ATTENUATOR
ADAPTER
.- - - - - -
ADAPTER
LOW PASS
FILTER
lp
l
Figure 1-14. Calibrator Amplitude Accuracy Test Setup
l-50 Calibrating
HP 95901 Spectrum Analyzer
Q
XY112
12. Calibrator Amplitude Accuracy
1. Connect the equipment as shown in Figure 1-14. The spectrum analyzer should be
positioned so that the setup of the adapters, LPF and attenuator do not bind. It may be
necessary to support the center of gravity of the devices.
2. On the power meter, press the dBm mode key. Record the Power Meter Reading in dBm in
the worksheet as the Power Meter Reading.
3. Subtract the Corrected Insertion Loss (step 10) from the Power Meter Reading (step 9).
CAL OUT Power = Power Meter Reading - Corrected Insertion Loss
Example: If the Corrected Insertion Loss is -10.0 dB, and the measuring receiver reading is
-30 dB, then (-30 dB) - (-10.0 dB) = -20 dB
4. Record this value as TR Entry 1 of the performance verification test record as the CAL OUT
power. The CAL OUT should be -20 dBm f0.4 dB.
75 D input: The CAL OUT power measured on 75 62 instruments will be the same as 50 0
instruments. To convert from dBm to dBmV use the following equation, then record this
value as TR Entry 2 of the performance verification test record.
dBmV = dBm + 48.75 dB
Example: -20 + 48.75 = 28.75 dBmV
Calibrator Amplitude Accuracy Worksheet
Description
Measurement
Mismatch Error
dB
Uncorrected Insertion Loss
dB
Corrected Insertion Loss
dB
Power Meter Reading
dBm
HP 95901 Spectrum Analyzer
C a l i b r a t i n g l-51
13. Frequency Response
The output of the synthesized sweeper is fed through a power splitter to a power sensor and
the spectrum analyzer. The synthesized sweeper’s power level is adjusted at 300 MHz to place
the displayed signal at the spectrum analyzer center horizontal graticule line. The measuring
receiver, used as a power meter, is placed in RATIO mode. At each new sweeper frequency and
spectrum analyzer center frequency setting, the sweeper’s power level is adjusted to place the
signal at the center horizontal graticule line. The measuring receiver displays the inverse of the
frequency response relative to 300 MHz (CAL OUT frequency).
Testing the flatness of Option 001, INPUT 75 62, is accomplished by first characterizing the
system flatness.
The related adjustment for this procedure is the “Frequency Response Error Correction.”
Equipment Required
Synthesized sweeper
Measuring receiver (used as a power meter)
Synthesizer/level generator
Power sensor
Power splitter
Adapter, Type N (f) to APC 3.5 (f)
Adapter, Type N (m) to Type N (m)
Cable, BNC, 122 cm (48 in)
Cable, Type N, 183 cm (72 in)
Additional Equipment for Option 001
Power meter
Power sensor
Adapter, Type N (f) 75 f? to Type N (m) 50 Q
Adapter, Type N (m) to BNC (m), 75 62
Cable, BNC, 120 cm (48 in) 75 62
l-52 Calibrating
HP 95901 Spectrum Analyzer
13. Frequency Response
System Characterization Procedure for Option 001
SYNTHESIZED SWEEPER
MEASURING RECEIVER
POWER METER
r-1
TYPE
CABLE
ASSY
N
P
ADAPTER
MECHANICAL
ADAPTER
XY114
Figure 1-15. System Characterization Test Setup (Option 001)
1. Zero and calibrate the measuring receiver and the power sensor as described in the
measuring receiver operation manual.
2. Zero and calibrate the power meter and the power sensor as described in the power meter
operation manual.
3. Press INSTRUMENT PRESET on the synthesized sweeper then set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
FREQSTEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
POWERLEVEL.........................................................5dBm
4. Connect the equipment as shown in Figure 1-15.
5. Adjust the synthesized sweeper power level for a 0 dBm reading on the measuring receiver.
6. Record the power meter reading in Column 4 of ‘Ihble 1-15, taking into account the Cal
Factors of both the power sensors.
7. On the synthesized sweeper, press ccw_l, and m (step-up key), to step through the
remaining frequencies listed in l%.ble 1-15. At each new frequency repeat steps 5 and 6,
entering each power sensor’s Cal Factor into the respective power meter.
HP 85901 Spectrum Analyzer
Calibrating 1-53
13. Frequency Response
Caution
Use only 75 62 cables, connectors, or adapters on the 75 bl input of an
Option 001 or damage to the input connector will occur.
MEASURING
SYNTHESIZED SWEEPER
RECEIVER
SPECTRUM ANALYZER
RF OUTPUT
ADAPTER
TYPE
POWER SENSOR
ADAPTER
N
CABLE
ASSY
XYI 15
Figure 1-16. Frequency Response Test Setup, 250 MHz
MEASURING RECEIVER
SYNTHESIZED SWEEPER
ADAPTER
TYPE
SPECTRUM ANALYZER
ADAPTER
POWER SENSOR
N
CABLE
MECHANICAL
ADAPTER
ASSY
XY116
Figure 1-17. Frequency Response Test Setup, 250 MHz, for Option 001
Procedure
1. Zero and calibrate the measuring receiver and the power sensor in log mode as described in
the measuring receiver operation manual.
2. Connect the equipment as shown in Figure 1-16.
Option 001 only: Refer to Figure 1-17.
1-54 Calibrating
HP 85901 Spectrum Analyzer
13. Frequency Response
3. Press INSTRUMENT PRESET on the synthesized sweeper and set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..300MHz
FREQSTEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
POWERLEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8 dBm
4. On the spectrum analyzer, press [PRESET] and wait for the preset to finish. Set the spectrum
analyzer controls as follows:
[FREQUENCY) 300
LMHz_)
CF STEP AUTO MAN 500
[SPAN) 100
(Option 001 only: Press
~AMPLITUDE),
More I uf 2, Amptd Units , then dBm .
(jiiciE) 10 c-1
SCALE LOG LIN (LOG) 1 (dB)
IBW)l(MHz)
VID l3W AUTO MAN 3 (kHz)
5. On the spectrum analyzer, press
CPEAK
SEARCH),
(j-1, then MK TRACK ON OFF (ON).
6. Adjust the synthesized sweeper power level for a MKR-TRK amplitude
reading of -14 dBm f0.05 dB.
7. Set the sensor Cal Factor on the measuring receiver and then press (RATIO).
8. Set the synthesized sweeper CW to 50 MHz.
9. Set the spectrum analyzer center frequency to 50 MHz by pressing
50 INIHz_).
CFREQUENCY)
10. Adjust the synthesized sweeper power level for a spectrum analyzer MKR-TRK amplitude
reading of -14 dBm f0.05 dB.
11. Set the sensor Cal Factor on the measuring receiver and record the negative of the power
ratio here and in Table 1-15.
Negative of Measuring Receiver Reading at 50 MHz
dB
12. Set the synthesized sweeper CW to 100 MHz.
13. Set the spectrum analyzer center frequency to 100 MHz by pressing
[FREQUENCY]
100 [MHz_).
14. Adjust the synthesized sweeper power level for a spectrum analyzer MKR-TRK amplitude
reading of -14 dBm ~tO.05 dB.
15. Set the sensor Cal Factor on the measuring receiver and record the negative of the power
ratio displayed on the measuring receiver in Table 1-15 as the Error Relative to 300 MHz.
16. On the synthesized sweeper, press [cw, and m (step-up key), and on the spectrum
analyzer, press CFREQUENCY), and m (step-up key), to step through the remaining
frequencies listed in Table 1-15. At each new frequency repeat steps 14 through 16,
entering the power sensor’s Cal Factor into the measuring receiver as indicated in
Table 1-15.
HP 85901 Spectrum Analyzer
Calibrating 1-55
13. Frequency Response
Frequency Response, (2 50 MHz)
SPECTRUM ANALYZER
I
XY117
Figure 1-18. Frequency Response Test Setup (~50 MHz)
17. Using a cable, connect the synthesizer/level generator directly to the INPUT 50 0. Refer to
Figure 1-18.
Option 001 only: Using a 75 9 cable, connect the synthesizer/level generator from the 75 61
OUTPUT to the INPUT 75 D and set the 50-75 D switch to the 75 0 position.
Set the synthesizer/level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15dBm
AMPTDINCR.........................................................0.05 dB
18. On the spectrum analyzer press the following keys:
(SPAN) 1om
50 INIHz)
(FREQUENCY)
@AK S E A R C H )
(jjFCTN) MK TRACK ON OFF (ON)
[SPAN) 100 m
Wait for AUTO ZOOM to finish, then press the following spectrum analyzer keys:
(BW)3(kHz)
VID BW AUTO MAN 1 (kHz_l
19. Adjust the synthesizer/level generator Amplitude until the MKR-TRK reads -14 dBm. This
corresponds to the amplitude at 50 MHz recorded in step 11. Record the synthesizer/level
generator amplitude below.
Amplitude Setting (50 MHz)
20. On the spectrum analyzer, press MARKER A , (jj], then MK TRACK OM OFF (ON).
21. Set the synthesizer/level generator frequency to 20 MHz.
22. On the spectrum analyzer, press the following keys:
(FREQUENCY]
CF STEP AUTO MAN 30 (MHz)
(FREQUENCY)
(7JJ (step-down key)
1-56 Calibrating
HP 85901 Spectrum Analyzer
dBm
13. Frequency Response
23. Adjust the synthesizer/level generator amplitude for a MKR A-TRK amplitude reading of
0.00 f0.05 dB. Record this amplitude setting in ‘lhble 1-16 in Column 2 at 20 MHz.
24. Repeat steps 21 through 23 for each of the frequencies listed in Table 1-16. Change the
spectrum analyzer’s center frequency step size to the relative frequency change for each
new frequency (for example, use 10 MHz CF STEP size when changing from 20 MHz to
10 MHz).
Option 001 only: Do not test below 1 MHz.
When measuring the 50 kHz center-frequency flatness and below, there will be two signals
on screen, the LO feedthrough and the signal from the synthesizer/level generator. Ensure
that the marker is on the signal from the synthesizer/level generator (to the right of the LO
feed through).
25. For each of the frequencies in Table 1-16, subtract the synthesizer/level generator
Amplitude Reading (column 2) from the synthesizer/level generator Amplitude setting
(50 MHz) recorded in step 19. Record the result as the Response Relative to 50 MHz
(column 3) in ‘fable 1-16.
26. Add to each of the Response Relative to 50 MHz entries in Table l-16 the measuring
receiver Reading at 50 MHz recorded in step 11. Record the results as the Response
Relative to 300 MHz (column 4) in Table 1-16.
27. Option 001 only: Starting with the error at 50 MHz, subtract Column 4 (System Error) to
Column 2 (Error Relative to 300 MHz) and record the result in Column 5 (Corrected Error
Relative to 300 MHz).
Test Results
Perform the following steps to verify the frequency response of the spectrum analyzer.
1. Enter the most positive number from Table 1-16, column 4:
dB
2. Enter the most positive number from Table 1-15, column 2:
(Option 001 only: Use column 5.)
dB
3. Record the more positive of numbers from steps 1 and 2 in TR Entry 1 of the performance
test record.
4. Enter the most negative number from Table 1-16, column 4:
dB
5. Enter the most negative number from ‘Iable 1-15, column 2:
(Option 001 only: Use column 5.)
dB
6. Record the more negative of numbers from steps 4 and 5 in TR Entry 2 of the performance
test record.
7. Subtract the results of step 6 from the results of step 3. Record this value in TR Entry 3 of
the performance test record.
The result should be less than 2.0 dB.
The absolute values in steps 3 and 6 should be less than 1.5 dB.
HP 65901 Spectrum Analyzer
Calibrating 1-57
13. Frequency Response
‘&ble 1-15. Frequency Response Errors Worksheet
Column 3
Column 2
Error
Sensor
Relative
CAL FACTOR
“requency to 300 MHz
Frequency (GHz)
(MHz)
WV
Column 1
1-56 Calibrating
50
0.03
100
0.1
150
0.1
200
0.3
250
0.3
300 (Ref)
0.3
350
0.3
400
0.3
450
0.3
500
0.3
550
1.0
600
1.0
650
1.0
700
1.0
750
1.0
800
1.0
850
1.0
900
1.0
950
1.0
1000
1.0
1050
1.0
1100
1.0
1150
1.0
1200
1.0
1250
1.0
1300
1.0
1350
1.0
Column 4
System
Error
WV
HP 65901 Spectrum Analyzer
c01umu 5
(Option 001)
Corrected Errol
Relative to
300 MHz (dB)
13. Frequency Response
‘lhble 1-15. Frequency Response Errors Worksheet (continued)
Frequency
Column 2
Error
Relative
to 300 MHz
(MHz)
WV
Column 1
Column 3
Sensor
CAL FACTOR
Frequency (GHz)
Corrected Errol
Relative to
1400
1.0
1450
1.0
1500
1.0
1550
2.0
1600
2.0
I
1650
2.0
I
1700
2.0
1750
2.0
1800
2.0
‘Ihble 1-16. Frequency Response (~50 MHz) Worksheet
Column 1
Frequency
50 MHz
Column 2
Synthesizer/Level
Generator Amplitude
@ml
Column 3
Response
Relative
to 50 MHz
Column 4
Response
Relative
to 300 MHz
0 (Reference)
20 MHz
10 MHz
5 MHz
1 MHz
200 kHz
50 kHz
9 kHz
HP 95901 Spectrum Analyzer
Calibrating 1-59
14. Other Input Related Spurious Responses
A synthesized source and the spectrum analyzer are set to the same frequency and the
amplitude of the source is set to -10 dBm. A marker-amplitude reference is set on the
analyzer. The source is then tuned to several different frequencies which should generate
image responses. At each source frequency, the source amplitude is set to -10 dBm and the
amplitude of the response, if any, is measured using the spectrum analyzer marker function.
The marker-amplitude difference is then compared to the specification.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized sweeper
Measuring receiver (used as a power meter)
Power sensor
Adapter, Type N (f) to APC 3.5 (f)
Adapter, Type N (f) to Type N (f)
Cable, Type N, 183 cm (72 in)
Additional Equipment for Option 001
Power sensor
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 0
Adapter, Type N (f) to Type N (f)
l-60 Calibrating
HP 65901 Spectrum Analyzer
14. Other Input Related Spurious Responses
Caution
Use only 75 61 cables, connectors, or adapters on the 75 D input of an
Option 001 or damage to the input connector will occur.
SYNTHESIZED SWEEPER
MEASURING RECEIVER
r-1
POWER SENSOR
SPECTRUM ANALYZER
ADAPTER
TYPE
I
fl
ADAPTER
N CABLE
/
L
I
INPUT 5Ofl
I
1
,-------------~
I
’ *
I
I
I
’ MINIMUM ADAPTER I
; ADAPTER
I
I
, LOSS
I
------------I
I
I
\
------w--B-
I OPT ION 001 ONLY !
--------m---d
;:
XY118
Figure 1-19. Other Input Related Spurious Test Setup
Procedure
1. Zero and calibrate the measuring receiver and the power sensor in log mode so that power
is read out in dBm. Enter the power sensor’s 542.8 MHz Cal Factor into the measuring
receiver.
Option 001 only: Use 75 D power sensor,
2. Press INSTRUMENT PRESET on the synthesized sweeper and set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542.8 MHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 dBm
Option 001 only: POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -14.3 dBm
3. Connect the equipment as shown in Figure 1-19. Connect the output of the synthesizer to
the power sensor using adapters.
Option 001 only: Use the minimum loss adapter and 75 fl adapter to connect to the 75 fl
power sensor.
4. Adjust the synthesized sweeper power level for a -10 dBm %O.l dB reading on the
measuring receiver.
5. On the synthesized sweeper, press SAVE 1.
6. Enter the power sensor’s Cal Factor for 1142.8 MHz into the measuring receiver.
7. Set the CW frequency on the synthesized sweeper to 1142.8 MHz.
HP 85901 Spectrum Analyzer
Calibrating 1-61
14. Other Input Related Spurious Responses
8. Adjust the synthesized sweeper power level for a - 10 dBm fO.1 dB reading on the
measuring receiver.
9. On the synthesized sweeper, press SAVE 2.
10. Enter the power sensor’s Cal Factor for 500 MHz into the measuring receiver.
11. Set the CW frequency on the synthesized sweeper to 500 MHz.
12. Adjust the synthesized sweeper power level for a - 10 dBm fO.1 dB reading on the
measuring receiver.
13. Connect the synthesized sweeper to the RF INPUT of the spectrum analyzer using the
appropriate cable and adapters.
Option 001 only: Use the minimum loss adapter and 75 61 adapter as shown in Figure 1-19.
14. On the spectrum analyzer, press (iWG7] and wait for the preset to finish then set the
controls as follows:
FREQUENCY_)
500 (MHz_)
Option 001 only: Press
CAMPLITUDE),
More 1 of 2, Amptd Units, then dBm .
15. On the spectrum analyzer, press the following keys:
(PEAK S E A R C H )
(j-1 MK TRACK OM OFF (ON)
ISPAN)200IkHz)
Wait for the AUTO ZOOM message to disappear. Press the following spectrum analyzer keys:
(PEAK S E A R C H )
[MKR] MARKER -> REF LVL
(NlKRj MK TRACK OM OFF (OFF)
[ P E A K S E A R C H ) MARKER n
[=I
k
e @J y(step-down
)
.
16. For each of the frequencies listed in Table 1-17, do the following:
a. Set the synthesized sweeper to the listed CW frequency by pressing RECALL 1 for a CW
frequency of 542.8 MHz or RECALL 2 for a CW frequency of 1148.8 MHz.
b. Press (SGLW] and wait for the completion of a new sweep.
c. On the spectrum analyzer, press [PEAK SEARCH) and record the marker-delta amplitude
reading in Table 1-17 as the Actual MKR AAmplitude.
The Actual MKR A Amplitude should be less than the Maximum MKR A Amplitude listed
in the table below.
The Maximum MKR A Amplitude is 10 dB more positive than the specification. This is due
to the 10 dB change in reference level made in step 15.
1-62 Calibrating
HP 85901 Spectrum Analyzer
14. Other Input Related Spurious Responses
‘Ihble 1-17. Image Responses Worksheet
17. Record the Maximum MKR A Amplitude from ‘Ihble l-17 as TR Entry 1 in the performance
test record.
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-63
15. Spurious Response
This test is performed in two parts. The first part measures second-harmonic distortion; the
second part measures third-order intermodulation distortion.
‘lb test second harmonic distortion, a 50 MHz low-pass filter is used to filter the source output,
ensuring that harmonics read by the spectrum analyzer are internally generated and not
coming from the source. To measure the distortion products, the power at the mixer is set
25 dB higher than specified. New test limits have been developed based on this higher power.
With -45 dBm at the input mixer and the distortion products suppressed by 70 dBc, the
equivalent Second Order Intercept (SOI) is +25 dBm (-45 dBm + 70 dBc). Therefore, with
-20 dBm at the mixer, and the distortion products suppressed by 45 dBc, the equivalent SO1 is
also +25 dBm (-20 dBm + 45 dBc).
For third order intermodulation distortion, two signals are combined in a directional bridge (for
isolation) and are applied to the spectrum analyzer input. The power level of the two signals is
8 dB higher than specified, so the distortion products should be suppressed by 16 dB less than
specified. In this manner, the equivalent Third Order Intercept (TOI) is measured.
With two -30 dBm signals at the input mixer and the distortion products suppressed by 70 dBc,
the equivalent TO1 is +5 dBm (-30 dBm + 70 dBc/B). However, if two -22 dBm signals are
present at the input mixer and the distortion products are suppressed by 54 dBc, the equivalent
TO1 is also +5 dBm (-22 dBm + 54 dBc/2).
Performing the test with a higher power level maintains the measurement integrity while
reducing both test time and the dependency upon the source’s noise sideband performance.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesizer/level generator
Synthesized sweeper
Measuring receiver (used as a power meter)
Power sensor, 100 kHz to 1800 MHz
50 MHz low pass filter
Directional bridge
Cable, BNC, 120 cm (48 in) (two required)
Adapter, Type N (f) to APC 3.5 (f)
Adapter, Type N (f) to BNC (m)
Adapter, Type N (m) to BNC (f)
Adapter, Type N (m) to BNC (m)
Additional Equipment for 75 Q Input
Power sensor, 75 62
Adapter, mechanical, 75 D to 50 D
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 61
Adapter, BNC (m) to BNC (m)
l-64 Calibrating
HP 85901 Spectrum Analyzer
15. Spurious Response
Caution
Use only 75 61 cables, connectors, or adapters on instruments with 75 D inputs,
or damage to the input connector will occur.
SPECTRUM ANALYZER
----I’
l NPUT
SYNTHESIZER/LEVEL
GENERATOR
50n
; ADAPTE
I
;
,
,
I
MINIMU
LOSS
ADAPTE
- - - - -
--------_
I
I
t OPTION 001 ONLY
I ---------I
wql2l
Figure l-20. Second Harmonic Distortion Test Setup, 30 MHz
Procedure
This performance test consists of two parts:
Part 1: Second Harmonic Distortion, 30 MHz
Part 2: Third Order Intermodulation Distortion, 50 MHz
Perform “Part 1: Second Harmonic Distortion, 30 MHz” before “Part 2: Third Order
Intermodulation Distortion, 50 MHz.”
Note
Part 2: Third Order Intermodulation Distortion, 50 MHz test is not required
when performing the operation verification.
HP 85901 Spectrum Analyzer
C a l i b r a t i n g 1.65
15. Spurious Response
Part 1: Second Harmonic Distortion, 30 MHz
1. Set the synthesizer level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 dBm
AMPLITUDE (75 fl input only:) . . . . . . . . . . . . . . . . . . . . . . . . . -4.3 dBm
2. Connect the equipment as shown in Figure l-20.
75 62 input only: Connect the minimum loss adapter between the LPF and INPUT 75 0.
3. Press (j-1 on the spectrum analyzer, then wait for the preset routine to finish. Set the
spectrum analyzer by pressing the following keys:
FREQUENCY) 30 m
[email protected]
75 Q input only: Press (j-1, More 1 of 2, Amptd Units , then dBm .
(AMPLITUDE] -10 m
[PEAK SEARCH]
(MKR] MK TRACK OM OFF (ON)
ISPAN)l(MHz)
4. Wait for the AUTO ZOOM message to disappear, then press the following spectrum analyzer
keys:
(j-1 MK TRACK OM OFF (OFF)
m 30 IkHI)
5. Adjust the synthesizer level generator amplitude to place the peak of the signal at the
reference level (-10 dBm).
6. Set the spectrum analyzer control as follows:
Isw)l(kHz)
VID BW AUTO MAN lOOn
7. Wait for two sweeps to finish, then press the following spectrum analyzer keys:
[PEAK SEARCH]
[MKR] MKB +CF STEP
INIKR) MARKER A
[FREQUENCY].
8. Press the m, (step-up key) on the spectrum analyzer to step to the second harmonic
(at 60 MHz). Press (PEAK SEARCH). Record the MKR A Amplitude reading in the performance
verification test record as TR Entry 1.
l-66 Calibrating
HP 85901 Spectrum Analyzer
15. Spurious Response
Part 2: Third Order Intermodulation Distortion, 50 MHz
Perform this procedure for calibrating the spectrum analyzer. It is not necessary to perform
this procedure for operation verification.
Caution
Use only 75 D cables, connectors, or adapters on the 75 62 input of an
Option 001 or damage to the input connector will occur.
SYNTHESIZED SWEEPER
-
RF OUTPUT
ADAPTER
r
MEASURING RECEIVER
SPECTRUM ANALYZER
m&OR
-
POWER SENSOR
ADAPTER
ADAPTER
SYNTHESIZER/LEVEL
GENERATOR
ADAPTER
50 MHz LOW
PASS FILTER
I
XY120
Figure 1-21. Third Order Intermodulation Distortion Test Setup
1. Zero and calibrate the measuring receiver and the power sensor in log mode so the power
reads out in dBm. Enter the power sensor’s 50 MHz Cal Factor into the measuring receiver.
Option 001 only: Calibrate the 75 D power sensor.
2. Connect the equipment as shown in Figure 1-21 with the output of the directional bridge
connected to the power sensor.
Option 001 only: The power measured at the output of the 50 62 directional bridge by the
75 tl power sensor, is the equivalent power “seen” by the 75 61 spectrum analyzer. Use the
75 61 power sensor with the Type N (f) to BNC (m) 75 61 adapter and use a BNC (m) to BNC
(m) 75 fl adapter in place of the 50 0 adapter.
3. Press INSTRUMENT PRESET on the synthesized sweeper then set the controls as follows:
POWERLEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6 dBm
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 MHz
RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..OFF
4. Set the synthesizer/level generator controls as follows:
FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50.050MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6dBm
50 R/75 62 switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 61 (no RF output)
HP 85901 Spectrum Analyzer
C a l i b r a t i n g 1-67
15. Spurious Response
5. On the spectrum analyzer, press Cm] and wait until the preset is finished then set the
controls as follows:
Option 001 only: Press
( AMPLITUDE ),
More 1 of 2, Amptd Units, then dRm .
c-1 10 QiGJ
[PEAK SEARCH] Mare I of 2
PEAK EXCURSM 31dB)
@i5’KF) More 1 of 2
THRESHLD ON OFF (ON) 90 [-dBm)
6. On the synthesized sweeper, set the RF to ON. Adjust the power level until the measuring
receiver reads -12 dBm f0.05 dB.
7. Disconnect the power sensor from the directional bridge. Connect the directional bridge
directly to the spectrum analyzer RF INPUT using an adapter and not a cable.
Option 001 only: Use a 75 D adapter, BNC (m) to BNC (m).
8. On the spectrum analyzer, press the following keys:
[PEAK S E A R C H )
(@GE%-- MK TRACK OH OFF (ON)
ISPAN)200lkHz)
Wait for the AUTO ZOOM message to disappear, then press the following spectrum analyzer
keys:
(jMKR] MK TRACK OH OFF (OFF)
[PEAK SEARCH]
Is->) MARKER ->REF LVL
9. On the synthesizer/level generator, set the 50 O/75 62 switch to the 50 0 position (RF ON).
Adjust the Amplitude until the two signals are displayed at the same amplitude.
10. If necessary, adjust the spectrum analyzer center frequency until the two signals are
centered on the display. Set the controls as follows:
m3(kHz)
VID l3W AUTO MAN 300a
11. Press (PEAK SEARCH), (j-1, then DSP LINE OH OFF (ON). Set the display line to a value
54 dB below the current reference level setting.
12. The third order intermodulation distortion products should appear 50 kHz below the lower
frequency signal and 50 kHz above the higher frequency signal. Their amplitude should be
less than the display line.
l-68 Calibrating
HP 85901 Spectrum Analyzer
15. Spurious Response
13. If the distortion products can be seen, proceed as follows:
a. On the spectrum analyzer, press @W%FJ wait for completion of the sweep, then press
( PEAK SEARCH ) and MARKER A.
b. Repeatedly press NEXT PEAK until the active marker is on the highest distortion
product.
c. Record the MKR A amplitude reading as TR Entry 2 in the performance test record. The
MKR A reading should be less than -54 dBc.
14. If the distortion products cannot be seen, proceed as follows:
a. On both the synthesized sweeper and the synthesizer/level generator, increase the
power level by 5 dB. Distortion products should now be visible at this higher power
level.
b. On the spectrum analyzer, press [SGL), [PEAK SEARCH), then MARKER n .
c. Repeatedly press NEXT PEAK until the active marker is on the highest distortion
products.
d. On both the synthesized sweeper and the synthesizer/level generator, reduce the power
level by 5 dB and wait for the completion of a new sweep.
e. Record the MKR A amplitude reading as TR Entry 2 in the performance test record. The
MKR A reading should be less than -54 dBc.
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-69
16. Gain Compression
Gain Compression is measured by applying two signals, separated by 3 MHz. First, the
test places a -30 dBm signal at the input of the spectrum analyzer (the spectrum analyzer
reference level is also set to -30 dBm). Then, a 0 dBm signal is applied to the spectrum
analyzer, overdriving its input. The decrease in the first signal’s amplitude (gain compression)
caused by the second signal is the measured gain compression.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized sweeper
Synthesizer/level generator
Measuring receiver (used as a power meter)
Power sensor
Directional bridge
Adapter, Type N (f) to BNC (m)
Adapter, Type N (m) to BNC (m)
Adapter, Type N (f) to APC 3.5 (f)
Adapter, Type N (m) to BNC (f)
Cable, BNC, 120 cm (48 in) (2 required)
Additional Equipment for Option 001
Power sensor, 75 fI
Adapter, Type N (f) to BNC (m), 75 D
Adapter, BNC (m) to BNC (m), 75 0
l-70 Calibrating
HP 85901 Spectrum Analyzer
16. Gain Compression
Caution
Use only 75 61 cables, connectors, or adapters on the 75 62 input of an
Option 001 or damage to the input connector will occur.
SYNTHESIZED SWEEPER
MEASURING RECEIVER
SPECTRUM ANALYZER
r-1
-
POWER SENSOR
ADAPTER
L”
ADAPTER
- - -
ADAPTER
SYNTHESIZER/LEVEL
GENERATOR
\
6’
I
ADAPTER
REFLECTED
SOURCE
XY121
Figure l-22. Gain Compression Test Setup
Procedure
1. Zero and calibrate the measuring receiver and the power sensor in log mode so the power
reads out in dBm. Enter the power sensor’s 50 MHz Cal Factor into the measuring receiver.
Option 001 only: Calibrate the 75 fl power sensor.
2. Connect the equipment as shown in Figure l-22, with the load (reflected) of the directional
coupler connected to the power sensor.
Option 001 only: The power measured at the output of the 50 62 directional bridge by the
75 D power sensor, is the equivalent power “seen” by the 75 Q spectrum analyzer. Use
the 75 Q power sensor with a Type N (f) to BNC (m) 75 61 adapter and use a BNC (m) to
BNC (m) 75 0 adapter in place of the 50 61 adapter.
3. Press INSTRUMENT PRESET on the synthesized sweeper then set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..53MHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 dBm
4. Set the synthesizer/level generator controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..50MHz
AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -14dBm
50 Q/75 D SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 62 (no RF output)
HP 85901 Spectrum Analyzer
Calibrating l-7 1
16. Gain Compression
5. On the spectrum analyzer, press C-1 and wait for the preset to finish then set the
controls as follows:
FREQUENCY) 50 (MHz)
&2OW
Option 001: Press (AMPLITUDE), More 1 of 2, Amptd Units, then dBm .
(AMPLITUDE) 20 [TiEi)
SCALE LOG LIM (LOG) 1 @
[BW) 300 [kHz)
6. On the synthesized sweeper, adjust the power level for a 0 dBm reading on the measuring
receiver. Set RF to OFF. On the synthesizer/level generator, set the 50 R/75 Q switch to
50 61.
Note that the power level applied to the spectrum analyzer input is 10 dB greater than the
specification to account for the 10 dB attenuation setting. A power level of 0 dBm at the
spectrum analyzer input yields -10 dBm at the input mixer.
7. Disconnect the power sensor from the directional coupler and connect the directional
coupler to the INPUT 50 61 connector of the spectrum analyzer using an adapter and not a
cable.
Option 001 only: Use a 75 61 adapter, BNC (m) to BNC (m).
8. On the spectrum analyzer, press the following keys:
(ONI
Wait for the AUTO ZOOM message to disappear.
9. On the synthesizer/level generator, adjust the Amplitude to place the signal 1 dB below the
spectrum analyzer reference level.
19. On the spectrum analyzer, press
@TTiT], (PEAK
SEARCH],
then MARKER A .
11. On the synthesized sweeper, set RF to ON.
12. On the spectrum analyzer, press @ZTTiT), CPEAK SEARCH), NEXT PEAK . The active marker
should be on the lower amplitude signal and not on the signal that is off the top of the
screen. If it is not on the lower amplitude signal, reposition the marker to this peak using
the spectrum analyzer knob.
13. Read the MKR A amplitude and record as TR Entry 1 in the performance test record. The
absolute value of this amplitude should be less than or equal to 0.5 dB.
1-72 Calibrating
HP 85901 Spectrum Analyzer
17. Displayed Average Noise Level
17. Displayed Average Noise Level
This test measures the displayed average noise level within the frequency range specified. The
spectrum analyzer input is terminated in 50 0.
The LO feedthrough is used as a frequency reference for these measurements. The test tunes
the spectrum analyzer frequency
across the band, uses the marker to locate the frequency with the highest response, and then
reads the average noise in zero span.
To reduce measurement uncertainty due to input attenuator switching and resolution
bandwidth switching, a reference level offset is added. The CAL OUT signal is used as the
amplitude reference for determining the amount of offset required. The offset is removed at
the end of the test by pressing @EE).
The related adjustment for this procedure is the “Frequency Response Adjustment.”
Equipment Required
Termination, 50 0
Adapter, Type N (m) to BNC (f)
Cable, BNC, 23 cm (9 in)
Additional Equipment for Option 001
Termination, 75 9 Type N (m)
Adapter, 75 0, Type N (f) to BNC (m)
Cable, BNC, 75 61, 30 cm (12 in)
Caution
Use only 75 62 cables, connectors, or adapters on the 75 61 input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
Ip
ADAPTER
XYllO
Figure 1-23. Displayed Average Noise Level Test Setup
HP 95901 Spectrum Analyzer
Calibrating 1-73
17. Displayed Average Noise Level
Procedure
1. Connect a cable from the CAL OUT to the INPUT 50 62 of the spectrum analyzer as shown
in Figure l-23.
Option 001 only: Use a 75 D cable and omit the adapter.
Press (PRESET) and wait for the preset to finish. Set the controls as follows:
Option 001 only:
(AMPLITUDE)
REF LVL 28.75 (+dBm)
ATTEN AUTO MAN O(dB)
2. Press the following spectrum analyzer keys:
[PEAK SEARCH]
@iGEKFCTN) MK TRACK ON OFF (ON)
m loom
Wait for the AUTO ZOOM message to disappear. Set the controls as follows:
VID EiW AUTO MAN 3OIHz]
(jMKRj MK TRACK ON OFF (OFF)
3. Press CsGL] and wait for completion of a new sweep, then press the following spectrum
analyzer keys:
CPEAK S E A R C H )
CAMPL’TUDE] More 1 of 3
REF LVL OFFSET
Subtract the MKR amplitude reading from -20 dBm and enter the result as the REF LVL
OFFSET. For example, if the marker reads -20.21 dBm, enter +0.21 dB (-20 dBm (-20.21 dBm) = +0.21 dB). Example for Option 001: If the marker reads 26.4 dBmV, enter
+2.35 dBmV (28.75 dBmV - 26.4 dBmV = 2.35 dBmV).
REF LVL OFFSET
Option 001: REF LVL OFFSET
dB
dBmV
4. Disconnect the cable from the INPUT 50 Q connector of the spectrum analyzer. Connect
the 50 62 termination to the spectrum analyzer INPUT 50 61 connector.
Option 001 only: Use the 75 D termination.
1-74 Calibrating
HP 95901 Spectrum Analyzer
17. Displayed Average Noise Level
400 kHz
If testing a spectrum analyzer equipped with Option 001, omit steps 5 through 9 and proceed to
step 10.
5. Press the following spectrum analyzer keys:
[AUTO coupLEI
VID BW AUTO MAN (AUTO)
[AMPLITUDE_) 10 m
m SWEEP CONT SGL
6. Press the following spectrum analyzer keys:
CPEAK SEARCHI)
(jNlKRFCTN) MK TRACK ON OFF (ON)
Wait for the AUTO ZOOM message to disappear, then press the following spectrum analyzer
keys:
[MKR) MK TRACK ON OFF (OFF)
7. Adjust the center frequency until the LO feedthrough peak is on the left-most graticule
line. Set the controls as follows:
Press [TRACE_), More 1 of 3 , DETECTOR SMP PK (SMP), then (SGLSWP).
Wait for completion of a new sweep.
8. Press the following spectrum analyzer keys:
@iciq
DSP LINE ON OFF (ON)
Adjust the display line so that it is centered on the average trace noise, ignoring any
residual responses. Refer to the Residual Responses verification test for any suspect
residuals.
9. Record the display line amplitude setting as TR Entry 1 as the noise level at 400 kHz. The
average noise level should be less than the specified limit.
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-75
17. Displayed Average Noise Level
1MHz
10. Press the following spectrum analyzer keys:
(AUTO COUPLE)
RES BW AUTO MAN (AUTO)
JTO)
Option 001 only: I-) REF LUL 35
I--dBm)
ITRIG) SWEEP CONT SGL (CONT)
11. Press the following spectrum analyzer keys:
SPEAK S E A R C H ]
(jj- MK TRACK ON OFF (ON)
cm- MARKER ->REF LVL
m2IMHz)
Wait for the AUTO ZOOM message to disappear. Press [mFCTN_) then MK TRACK ON OFF
(OFF).
12. Press (_FREQUENCY) and adjust the center frequency until the LO feedthrough peak is on the
left-most graticule line. Set the controls as follows:
LSPAN_) 500
[email protected]
5
0
[yEi]
Option 001 only: CAMPLITUDE] REF LVL 1.2 [-dBmj
Isw)
VID l33w AUTO MAN 30 IHz)
13. Press @[email protected]). Wait for the completion of a new sweep.
14. Press the following spectrum analyzer keys:
@iiFiq
DSP LINE ON OFF (ON)
Adjust the display line so that it is centered on the average trace noise, ignoring any
residual responses. Refer to the Residual Responses verification test for any suspect
residuals.
15. Record the display line amplitude setting as TR Entry 2 in the performance test record as
the noise level at 1 MHz. The average noise level should be less than the specified limit.
1-76 Calibrating
HP 85901 Spectrum Analyzer
17. Displayed Average Noise Level
1 MHz to 1.5 GHz
16. Press the following spectrum analyzer keys:
pE?KEE)
START FltEQ 1 (MHz)
STOP FREQ 1.5 @Z-J
Isw]l(MHz)
VID 3W AUTO MAN 10 (kHz)
[TRIG) SWEEP CONT SGL (CONT)
17. Adjust the spectrum analyzer start frequency setting, if necessary, to place the LO
feedthrough just off-screen to the left.
18. Press the following spectrum analyzer keys:
@iTiF-(m) CLEAR WRITE A More 1 of 3
VID AVE ON OFF (ON) 10 (Hz)
Wait until AVG 10 is displayed to the left of the graticule (the spectrum analyzer will take
ten sweeps, then stop).
19. Press @EAK SEARCH) and record the MKR frequency as the Measurement Frequency in
Table 1-18 for 1 MHz to 1.5 GHz.
20. Press the following spectrum analyzer keys:
cm) More 1 of 3 VID AVG ON OFF (OFF)
CAUTO C O U P L E ] ms Bw Am0 MAN (AUTO)
VID BW AUTO NAN (AUTO)
ISPAN_) 50 @iTJ
C-1 CENTER FREQ
Set the center frequency to the measurement frequency recorded in Table 1-18 for 1 MHz
to 1.5 GHz. Set the controls as follows:
Isw]l(kHz)
VID BW AUTO HAN 30a
21. Press [SGLSWP).
Wait for the sweep to finish. Press the following spectrum analyzer keys:
(TiFFiF)
DSP LINE ON OFF (ON)
Adjust the display line so that it is centered on the average trace noise, ignoring any
residual responses. Refer to the Residual Responses verification test for any suspect
residuals.
22. Record the display line amplitude setting as TR Entry 3 in the performance test record.
The average noise level should be less than the specified limit.
HP 85901 Spectrum Analyzer
Calibrating 1-77
17. Displayed Average Noise Level
1.5 GHz to 1.8 GHz
23. Press the following spectrum analyzer keys:
(AUTO COUPLE)
RES l3W AUTO MAN (AUTO)
VID BW AUTO MAN (AUTO)
ISPAN) 100
(AMPLITUDE)
5
0
(-dBm)
Option 001 only: (AMPLITUDE) REF LVL 1.2 C-dem)
m SWEEP CONT SGL (CONT)
CFREQUENCY)
START FREQ 1.5 m
STOP FAEQ 1.8 (GHz)
24. Repeat steps 18 through 21 above for frequencies from 1.5 GHz to 1.8 GHz.
If the Displayed Average Noise at 1.8 GHz is at or out of specification, it is recommended
that a known frequency source be used as a frequency marker. This ensures that testing is
done at or below 1.8 GHz.
‘Ihble 1-18. Displayed Average Noise Level
Frequency
Range
400 kHz
measurement Displayed Average
Noise Level
Frequency
(dBm or dBmV)
TR Entrv
1
400 kHz
Specification
-115 dBm
I
1 MHz
2
-115 dBm
(Option 001: -<-63 dBmV)
1 MHz to 1.5 GHz
3
-115 dBm
(Option 001: -<-63 dBmV)
1.5 GHz to 1.8 GHz
4
-113 dBm
(Option 001: <-61 dBmV)
25. Record the display line amplitude setting as TR Entry 4 in the performance test record.
The average noise level should be less than the specified limit.
l-79 Calibrating
HP 95901 Spectrum Analyzer
18. Residual Responses
18. Residual Responses
The spectrum analyzer input is terminated and the spectrum analyzer is swept from 150 kHz
above the LO to 1 MHz. Then the spectrum analyzer is swept in 50 MHz spans throughout the
1 MHz to 1.8 GHz range. Any responses above the specification are noted.
There are no related adjustment procedures for this performance test.
Equipment Required
Termination, 50 fI
Additional Equipment for Option 001
Termination, 75 61 Type N (m)
Adapter, 75 62 Type N (f) to BNC (m)
Caution
Use only 75 D cables, connectors, or adapters on the 75 62 input of an
Option 001 or damage to the input connector will occur.
SPECTRUM ANALYZER
XY123
TE:RM I NAT I ON
Figure l-24. Residual Response Test Setup
Procedure
150 kHz to 1 MHz
1. Connect the termination to the spectrum analyzer input as shown in Figure l-24.
Option 001 only: Use the 75 D termination with the adapter, skip steps 2 through 4, and
proceed with step 5.
2. Press [PRESET] on the spectrum analyzer and wait for the preset to finish. Press the
following spectrum analyzer keys:
SPEAK S E A R C H )
(jjj MK TRACK ON OFF (ON)
ISPAN)l(MHz)
Wait for the AUTO ZOOM message to disappear, then press [MKRFCTN) and MK TRACK ON OFF
(OFF).
HP 85901 Spectrum Analyzer
Calibrating 1-79
18. Residual Responses
3. Adjust the center frequency until the LO feedthrough peak is on the left-most vertical
graticule line. Press the following spectrum analyzer keys as follows:
PEAK SEARCH]
h
MARKER A 150 m
MARKER NORMAL
[AMPLITUDE) 60 I-dem_l
ATTEN AUTO MAN O(dB)
Isw]3(kHz)
VID l3W AUTO HAN 1 m
piFiz~
DSP LINE ON OFF 90m
4. Press [SGL] and wait for a new sweep to finish. Look for any residual responses at or
above the display line. If a residual is suspected, press CsGLSWP) again. A residual response
will persist on successive sweeps, but a noise peak will not. Note the frequency and
amplitude of any residual responses above the display line and to the right of the marker in
‘Iable 1-19.
1 MHz to 1.8 GHz
5.
Press CPRESET] on the spectrum analyzer and wait for the preset to finish. Set the controls
as follows:
Option 001 only: QGKiZKJ REF LVL 11.25 [-dBm)
ATTEN AUTO WAN 0 Ide)
6. Press [FREQUENCY) and adjust the center frequency until the LO feedthrough (the “signal”
near the left of the screen) is just off the left-most vertical graticule line. Set the controls
as follows:
CF STEP AUTO MAN 450
@ 100
VID BW AUTO MAN 3 [kHzl
[DISPLAY)
DSP LINE ON OFF 90 (-dem]
Option 001 only: Press @iGiXY~, DSP LINE ON OFF , then 38 [-dBm]
7. Press C-1 and wait
above the display line. If
will persist on successive
amplitude of any residual
l-90 Calibrating
for a new sweep to finish. Look for any residual responses at or
a residual is suspected, press CsGLSWP) again. A residual response
sweeps, but a noise peak will not. Note the frequency and
responses above the display line in ‘Iable 1-19.
HP 95901 Spectrum Analyzer
18. Residual Responses
8. Press k-1, m (step-up key), to step to the next frequency and repeat step 7.
9. Repeat steps 7 and 8 until the range from 1 MHz to 1.8 GHz has been checked. This
requires 40 additional frequency steps. The test for this band requires about 6 minute to
complete if no residuals are found.
If there are any residuals at or near the frequency specification limits (1 MHz or 1.8 GHz),
it is recommended that a known frequency source be used as a frequency marker. This will
ensure that testing is done within the specification limits.
10. Record the highest residual from Table 1-19 as TR Entry 1 in the performance test record.
If no residuals are found, then record N/A in the performance test record.
‘Ihble 1-19. Residual Responses Above Display Line
Frequent y
Amplitude
(MHz)
WW
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-81
19. Absolute Amplitude, Vernier, and Power Sweep Accuracy
This procedure is only for spectrum analyzers equipped with Option 010 or 011.
The tracking generator output is connected to the spectrum analyzer input and the tracking is
adjusted at 300 MHz for a maximum signal level. A calibrated power sensor is then connected
to the tracking generator output to measure the power level at 300 MHz.
The measuring receiver is then set for RATIO mode so that future power level readings are in
dB relative to the power level at -10 dBm (Option 011: +38.8 dBmV). The output power level
setting is decreased in 1 dB steps and the power level is measured at each step. The difference
between ideal and actual power levels is calculated at each step.
Since a power sweep is accomplished by stepping through the vernier settings, the
peak-to-peak variation of the vernier accuracy is equal to the power sweep accuracy.
The related adjustment for this procedure is the “Modulator Offset and Gain Adjustment.”
Equipment Required
Measuring receiver
Power sensor
Cable, Type N, 62 cm (24 in)
Additional Equipment for Option 011
Power sensor
Cable, BNC, 75 62
Adapter, Type N (f) to BNC (m), 75 D
Adapter, mechanical, Type N, 50 61 (m) to 75 62 (f)
Caution
Use only 75 61 cables, connectors, or adapters on the 75 a input of an
Option 011 or damage to the input connector will occur.
MEASURING RECEIVER
SPECTRUM ANALYZER
OPTION 011)
TYPE
N CABLE
(OPTION
---------
It OPTION 011 ONLY’
L--------J
011: USE
75~
ENC
CABLE)
XY124
Figure l-25. Absolute Amplitude, Vernier, and Power Sweep Accuracy Test Setup
1-82 Calibrating
HP 85901 Spectrum Analyzer
19. Absolute Amplitude, Vernier, and Power Sweep Accuracy
Procedure
1. Connect the Type N cable between the RF OUT 50 62 and INPUT 50 61 connectors on the
spectrum analyzer. See Figure l-25.
Option 011 only: Connect the BNC cable between the RF OUT 75 62 and INPUT 75 Q
connectors on the spectrum analyzer.
2. Press (PRESET) on the spectrum analyzer and set the controls as follows:
FREQUENCY]
&[email protected]
300 IFvlHz)
3. On the spectrum analyzer, press the following keys:
(MKR)
[AUXCTRLI) Track Gen
SRC PWR ON OFF (ON) 5 [-dBmOption 011 only: SBC PWR ON OFF (ON) 38 [Xl
4. On the spectrum analyzer, press TRACKING PEAK . Wait for the PEAKING message to
disappear.
5. Zero and calibrate the measuring receiver/power sensor combination in log mode (power
levels readout in dBm). Enter the power sensor’s 300 MHz Cal Factor into the measuring
receiver.
6. Disconnect the Type N cable from the RF OUT 50 D and connect the power sensor to the
RF OUT 50 62 as shown in Figure l-25.
Option 011 only: Disconnect the BNC cable from the RF OUT 75 Q and connect the power
sensor to the RF OUT 75 61 using an adapter.
7. On the spectrum analyzer, press 10 (--dBm), 1SWP).
Caption 011 only: 38.8 I+dBm) (+38.8 dBmV).
8. Subtract -10 dBm from the power level displayed on the measuring receiver and record
the result in the performance test record as TR Entry 1.
9. Press RATIO on the measuring receiver. Power levels now readout in dB relative to the
power level just measured at the -10 dBm output power level setting.
Option 011 only: +38.8 dBmV output power level setting.
10. Set the SRC POWER to the settings indicated in Table l-20. At each setting, record the
power level displayed on the measuring receiver.
11. Calculate the Vernier Accuracy by subtracting the SRC POWER setting and 10 dB from the
Measured Power Level for each SRC POWER setting in Table l-20.
Vernier Accuracy = Measured Power Level - SRC POWER + 10 dB
Option 011 only: Calculate the Vernier Accuracy by subtracting the SRC POWER setting
from the Measured Power Level, adding 38.8 dB to each SRC POWER setting in Table l-20.
Vernier Accuracy = Measured Power Level - SRC POWER - 38.8 dB.
12. Locate the most positive and most negative Absolute Vernier Accuracy values in Table l-20
and record as TR Entries 2 and 3 in the performance test record.
HP 95901 Spectrum Analyzer
C a l i b r a t i n g l-83
19. Absolute Amplitude, Vernier, and Power Sweep Accuracy
13. Calculate the power sweep accuracy by subtracting the Negative Vernier Accuracy
recorded in step 12 from the Positive Vernier Accuracy recorded in step 12. Record the
result in the performance test record as TR Entry 4.
Power Sweep Accuracy = Positive Vernier Accuracy - Negative Vernier Accuracy
‘Exble l-20. Vernier Accuracy Worksheet
1
SRC POWER Setting
Measured
Power Level
Vernier
Accuracy
Measurement
Uncertainty
Ipt 011, dBmV
Ipt 010, dBn
(W
tdB)
@W
+ 38.8
-10
0 (Ref)
0 Wf)
0
+39.8
-9
f0.033
+ 40.8
-8
f0.033
+41.8
-7
f0.033
+42.8
-6
f0.033
+ 37.8
-5
f0.033
+ 36.8
-4
f0.033
+ 35.8
-3
f0.033
+ 34.8
-2
f0.033
+ 33.8
-1
f0.033
+32.8
0
f0.033
+31.8
-15
f0.033
+ 30.8
-14
60.033
+29.8
-13
60.033
+28.8
-12
50.033
+27.8
-11
f0.033
1-84 Calibrating
HP 85901 Spectrum Analyzer
20. Tracking Generator Level Flatness
20. Tracking Generator Level Flatness
This procedure is only for spectrum analyzers equipped with Option 010 or 011.
The tracking generator output is connected to the spectrum analyzer input and the tracking is
adjusted at 300 MHz for a maximum signal level. A calibrated power sensor is then connected
to the tracking generator output to measure the power level at 300 MHz. The measuring
receiver is set for RATIO mode so that future power level readings are in dB relative to the
power level at 300 MHz.
The tracking generator is stepped to several frequencies throughout its range. The output
power difference relative to the power level at 300 MHz is measured at each frequency and
recorded.
The related adjustment for this procedure is the “Modulator Offset and Gain Adjustment.”
Equipment Required
Measuring receiver
Power sensor
Cable, Type N, 62 cm (24 in)
Additional Equipment for Option 011
Power sensor
Adapter, Type N (f) to BNC (m), 75 61
Adapter, mechanical, Type N, 50 62 (m) to 75 62 (f)
Cable, BNC, 75 61
Caution
Use only 75 Q cables, connectors, or adapters on the 75 Q input of an
Option 011 or damage to the input connector will occur.
MEASURING
RECEIVER
SPECTRUM ANALYZER
OPT ION 011)
TYPE
N CABLE
(OPTION
011: “SE 75n BNC
- - - - - - - - I * OPTION 011 ONLY I
L--------l
CABLE)
XY124
Figure l-26. Tracking Generator Level Flatness Test Setup
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-85
20. Tracking Generator Level Flatness
Procedure
1. Connect the Type N cable between the RF OUT 50 61 and INPUT 50 D connectors on the
spectrum analyzer. See Figure l-26.
Q&ion 011 only: Connect the BNC cable between the RF OUT 75 a2 and INPUT 75 62
connectors on the spectrum analyzer.
2. Press (PRESET) on the spectrum analyzer. Set the controls as follows:
FREQUENCY_) 0 IHz)
&[email protected]
3. Press the following spectrum analyzer keys:
(PEAK SEARCH)
(jETFEE) MK TRACK ON OFF (ON)
m 100 (kHz)
Wait for the AUTO ZOOM message to disappear. Press [FREQUENCY), FREQ OFFSET. Enter
the negative of the MKR-TRK frequency displayed in the upper right-hand corner of the
display. For example, if the MKR-TRK frequency is 132 kHz, enter -132 kHz.
Set the spectrum analyzer controls as follows:
lmFCTN) MK TRACK ON OFF (OFF)
(SPAN) ZERO SPAN
m1(MHz)
4. Set the spectrum analyzer controls as follows:
(FREQUENCY) 300 (MHz)
CF STEP AUTO MAN lOO=
(SPAN)O(Hzl
5. On the spectrum analyzer, press the following keys:
LMKR)
(AUX) Track Gen
SRC PWR ON OFF 5 I-dBm)
Option 011 only: SRC PWR OK OFF 38 c+dBm) (+ 38 dBmV).
6. On the spectrum analyzer, press TRACKING PEAK . Wait for the PEAKING message to
disappear.
7. Zero and calibrate the measuring-receiver/power-sensor combination in log mode (power
levels readout in dBm). Enter the power sensor’s 300 MHz Cal Factor into the measuring
receiver.
8. Disconnect the Type N cable from the RF OUT 50 fi and connect the power sensor to the
RF OUT 50 0.
Option 011 only: Disconnect the BNC cable from the RF OUT 75 61 and connect the power
sensor to the RF OUT 75 61 using an adapter.
9. On the spectrum analyzer, press (AUX), Track Gen , SRC PWR ON OFF , 10 (--dBm),
then (SGLSWP).
Qotion 011 only: SK! PWR ON OFF 38.8 (+dBmJ
l-86 Calibrating
HP 85901 Spectrum Analyzer
20. Tracking Generator Level Flatness
10. Press RATIO on the measuring receiver. The measuring receiver readout is now for power
levels relative to the power level at 300 MHz.
11. Set the spectrum analyzer center frequency to 100 kHz then press (sGL].
Option 011 only: Set the spectrum analyzer center frequency to 1 MHz then press
(SGL).
12. Enter the appropriate power sensor Cal Factor into the measuring receiver as indicated in
Table 1-21.
13. Record the power level displayed on the measuring receiver as the Level Flatness in
Table 1-21.
14. Repeat steps 11 through 13 above to measure the flatness at each center frequency setting
listed in ‘Ihble 1-21. The @) (step-up) key may be used to tune to center frequencies above
100 MHz.
Spectrum analyzers equipped with Option 011 should be tested only at frequencies of
1 MHz to 1.8 GHz.
15. Locate the most positive Level Flatness reading in ‘Ihble 1-21 for the indicated frequency
ranges and record as the Maximum Flatness.
Option 010:
Maximum Flatness, 100 kHz
dB (TR Entry 1)
Maximum Flatness, 300 kHz to 5 MHAdB (TR Entry 2)
Maximum Flatness, 10 MHz to 1800 MHz
dB (TR Entry 3)
Option 011:
Maximum Flatness, 1 MHz to 1800 MHAdB (TR Entry 1)
16. Locate the most negative Level Flatness reading in Table 1-21 for the indicated frequency
ranges as the Minimum Flatness.
Option 010:
Minimum Flatness, 100 kHz
dB (TR Entry 4)
Minimum Flatness, 300 kHz to 5 MHz
dB (TR Entry 5)
Minimum Flatness, 10 MHz to 1800 MHz
dB (TR Entry 6)
Option 011:
Minimum Flatness, 1 MHz to 1800 MHz
dB (TR Entry 2)
17. Press (jVZ’?K] on the spectrum analyzer.
HP 85901 Spectrum Analyzer
Calibrating 1-87
20.
Tracking Generator Level Flatness
‘Ihble 1-21. Level Flatness Relative to 300 MHZ Worksheet
Center
F-3
Level
Flatness
WV
Cal Factor
fieq
(MHz)
Measurement
Uncertainty (dB)
Option 010
Option 011
100 kHz*
0.1
+ 0.42/-0.45
N/A
300 kHz’
0.3
+ 0.28/-0.28
N/A
500 kHz*
0.3
+ 0.28/-0.28
N/A
1 MHz
1
+ 0.28/-0.28
+ 0.18/-0.39
2 MHz
3
+ 0.28/-0.28
+ O.lS/-0.39
5 MHz
3
+ 0.281-0.28
+ O.lB/-0.39
10 MHz
10
+ 0.24/-0.24
+ O.lS/-0.39
20 MHz
30
+ 0.24/-0.24
+O.lS/-0.39
50 MHz
50
+ 0.241-0.24
+ O.lS/-0.39
100 MHz
100
+ 0.241-0.24
+0.18/-0.39
200 MHz
300
+0.24/-0.24
+ 0.18/-0.39
300
0 (Ref)
0 (Refl
400 MHz
300
+ 0.241-0.24
+ 0.18/-0.39
500 MHz
300
+0.24/-0.24
+0.18/-0.39
600 MHz
300
+ 0.241-0.24
+ O.lS/-0.39
700 MHz
1000
+ 0.241-0.24
+O.lS/-0.39
800 MHz
1000
+ 0.241-0.24
+ O.lS/-0.39
900 MHz
1000
+ 0.24/-0.24
+ 0.18/-0.39
000 MHz
1000
+ 0.24/-0.24
+ 0.18/-0.39
100 MHz
1000
+ 0.24/-0.24
+ 0.18/-0.39
200 MHz
1000
+ 0.241-0.24
+ O.lS/-0.39
300 MHz
1000
+ 0.24/-0.24
+0.18/-0.39
400 MHz
1000
+ 0.24/-0.24
+ 0.18/-0.39
500 MHz
2000
+ 0.241-0.24
+ O.lS/-0.39
600 MHz
2000
+ 0.241-0.24
+ 0.18/-0.39
700 MHz
2000
+ 0.241-0.24
+ O.lS/-0.39
800 MHz
2000
+ 0.24/-0.24
+0.18/-0.39
300 MHz
0 (Ref)
These frequencies are tested on Option 010 spectrum analyzers only.
1-88 Calibrating
HP 85901 Spectrum Analyzer
21. Harmonic Spurious Outputs
2 1. Harmonic Spurious Outputs
This procedure is only for spectrum analyzers equipped with Option 010 or 011.
The tracking generator output is connected to the spectrum analyzer input and the tracking
is adjusted at 300 MHz for a maximum signal level. The tracking generator output is then
connected to the input of an microwave spectrum analyzer. The tracking generator is tuned
to several frequencies and the amplitude of the second and third harmonics relative to the
fundamental are measured at each frequency.
There are no related adjustment procedures for this performance test.
Equipment Required
Microwave spectrum analyzer
Adapter, Type N (m) to BNC (f)
Cable, Type N, 62 cm (24 in)
Cable, BNC, 23 cm (9 in)
Additional Equipment for Option 011
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 Q
Cable, BNC, 75 fI
Caution
Use only 75 0 cables, connectors, or adapters on the 75 D input of an
Option 011 or damage to the input connector will occur.
SPECTRUM ANALYZER
SPECTRUM ANALYZER
OUT 1
50fljor
INPUT1
TYPE
750 cIPTION 011)
N CABLE
BNC
CABLE
TYPE
N CABLE
---------
I* OPTION 011 ONLY I
,--,-----I
XY126
Figure l-27. Harmonic Spurious Outputs Test Setup
HP 85901 Spectrum Analyzer
Calibrating 1-89
21. Harmonic Spurious Outputs
Procedure
1. Connect the Type N cable between the RF OUT 50 61 and INPUT 50 62 connectors on the
spectrum analyzer. See Figure l-27.
Q&ion 011 only: Connect the 75 R BNC cable between the RF OUT 75 fI and INPUT 75 62
connectors on the spectrum analyzer.
2. Press PRESET on the spectrum analyzer and set the controls as follows:
FREQUENCY] 300 (MHz)
LOB
3. On the spectrum analyzer, press the following keys:
[AUX] Track Gen
SRC PWR OM OFF 5 (--dBm]
Q&ion 011 only: SRC PWR OM OFF 42 I+dBm) (+42 dBmV).
4. On the spectrum analyzer, press TRACKING PEAK . Wait for the PEAKING message to
disappear.
5. On the spectrum analyzer, press 0
[+dBm), [ FREQUENCY),
10 INIHz), then CsGLSWP).
Option 011 only: 42.8 (+dBm).
It is only necessary to perform step 6 if more than 2 hours have elapsed since a front-panel
calibration of the microwave spectrum analyzer has been performed. The microwave
spectrum analyzer should be allowed to warm up for at least 30 minutes before proceeding.
6. Perform a front-panel calibration of the microwave spectrum analyzer as follows:
a. Connect a BNC cable between CAL OUTPUT and RF INPUT.
b. Press C-1 (INSTR PRESET), CRECALL), 8. Adjust AMPTD CAL for a marker
amplitude reading of -10 dBm.
c. Press cm), 9. Adjust c-1 for a maximum amplitude response.
7. Connect the Type N cable from the tracking generator output to the microwave spectrum
analyzer RF INPUT. See Figure l-27.
0ption 011 only: Use the minimum loss adapter and Type N (f) to BNC (m) adapter.
8. Set the microwave spectrum analyzer controls as follows:
CENTERFREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..lOMHz
SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 MHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5 dBm
RESBW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30kHz
LOG dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10dB
l-90 Calibrating
HP 85901 Spectrum Analyzer
21. Harmonic Spurious Outputs
9. On the microwave spectrum analyzer, do the following:
a. Press CPEAK SEARCH] and (SIGNAL TRACK) (ON). Wait for the signal to be displayed at
center screen.
b. Press IPEAK S E A R C H ] , IMKR -> C F S T E P ] , In], and ( S I G N A L T R A C K ] (OFF).
c. Press ( CENTER FREQUENCY ), @) (step-up key) to tune to the second harmonic. Press
( PEAK SEARCH). Record the marker amplitude reading in Table l-22 as the 2nd Harmonic
Level for the 10 MHz Tracking Generator Output Frequency.
d. Perform this step only if the tracking generator output frequency is less than 600 MHz.
Press ( CENTER FREQUENCY ), m (step-up) key to tune to the third harmonic. Press
CPEAK SEARCH]. Record the marker amplitude reading in ‘fable l-22 as the 3rd Harmonic
Level for the 10 MHz Tracking Generator Output Frequency.
e. Press MARKER loFF).
10. Repeat steps 8 and 9 above for the remaining Tracking Generator Output Frequencies listed
in Table l-22. Note that the spectrum analyzer CENTER FREQ is the same as the Tracking
Generator Output Frequency.
11. Locate the most positive 2nd Harmonic Level in Table 1-22 and record as TR Entry 1 in the
performance test record.
12. Locate the most positive 3rd Harmonic Level in Table l-22 and record as TR Entry 2 in the
performance test record.
‘Ihble l-22. Harmonic Spurious Responses Worksheet
Tracking
Generator
Frequent y
2nd Harmonic
Level
(dBc)
3rd Harmonic
Level
Cd=)
Measurement
Uncertainty
(dJ%
10 MHz
+ 1.55/b1.80
100 MHz
+ 1.55/- 1.80
300 MHz
+ 1.55/-1.80
850 MHz
NIA
HP 85901 Spectrum Analyzer
+ 1.55/-1.80
Calibrating 1.91
22. Non-Harmonic Spurious Outputs
This procedure is only for spectrum analyzers equipped with Option 010 or 011.
The tracking generator output is connected to the spectrum analyzer input and the tracking
is adjusted at 300 MHz for a maximum signal level. The tracking generator output is then
connected to the input of a microwave spectrum analyzer. The tracking generator is set to
several different output frequencies.
For each output frequency, several sweeps are taken on the microwave spectrum analyzer
over different frequency spans and the highest displayed spurious response is measured in
each span. Responses at the fundamental frequency of the tracking generator output or their
. harmonics are ignored. The amplitude of the highest spurious response is recorded.
There are no related adjustment procedures for this performance test.
Equipment Required
Microwave spectrum analyzer
Adapter, Type N (m) to BNC (f)
Cable, Type N, 62 cm (24 in)
Cable, BNC, 23 cm (9 in)
Additional Equipment for Option 011
Adapter, minimum loss
Adapter, Type N (f) to BNC (m), 75 9
Cable, BNC, 75 62
Caution
Use only 75 9 cables, connectors, or adapters on the 75 61 input of an
Option 011 or damage to the input connector will occur.
SPECTRUM ANALYZER
SPECTRUM ANALYZER
TION 011)
TYPE N CABLE
(OPTION 011: us 750
BNC
CABLE
TYPE
CABLE)
N CABLE
--------I* OPTION 011 ONLY
h--------J
I
Figure l-28. Non-Harmonic Spurious Outputs Test Setup
1-92 Calibrating
BNC
HP 85901 Spectrum Analyzer
XY126
22. Non-Harmonic Spurious Outputs
Procedure
1. Connect the Type N cable between the RF OUT 50 D and INPUT 50 62 connectors on the
spectrum analyzer. See Figure l-28.
Option 011 only: Connect the 75 0 BNC cable between the RF OUT 75 61 and INPUT 75 61
on the spectrum analyzer.
2. Press CPRESET] on the spectrum analyzer and set the controls as follows:
3. On the spectrum analyzer, press the following keys:
(AUX] Track Gen
SRC PWR ON OFF 5 [-dBm)
Option 011 only: SRC PWR OM OFF 38 ISdBm) (+38 dBmV).
4. On the spectrum analyzer, press TRACKING PEAK . Wait for the PEAKING message to
disappear.
5. On the spectrum analyzer, press 0 [+dBm) then c-1.
Option 011 only: 42.8 I+dBm).
It is only necessary to perform step 6 if more than two hours have elapsed since a
front-panel calibration of the microwave spectrum analyzer has been performed. The
microwave spectrum analyzer should be allowed to warm up for at least 30 minutes before
proceeding.
6. Perform a front-panel calibration on the microwave spectrum analyzer as follows:
a. Connect a BNC cable between CAL OUTPUT and RF INPUT.
b. Press C-1 (INSTR PRESET), [RECALL_), 8. Adjust AMPTD CAL for a marker
amplitude reading of -10 dBm.
c. Press (RECALL), 9. Adjust FREQ ZERO for a maximum amplitude response.
Press
d. Press
(SHIFT], [ FREQUENCY
to start the 30 second internal error correction routine.
to use the error correction factors just calculated.
SPAN )
Cm], [ START FREQ]
7. Connect the Type N cable from the tracking generator output to the microwave spectrum
analyzer RF INPUT as shown in Figure l-28.
Q&ion 011 only: Use the minimum loss adapter and Type N (f) to BNC (m) adapter.
8. Set the spectrum analyzer CENTER FREQ to the Fundamental Frequency listed in
‘Ihble l-23.
9. Set the microwave spectrum analyzer controls as follows:
SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100kHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5 dBm
ATTEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20dB
LOGdB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10dB
10. Set the microwave spectrum analyzer CENTER FREQUENCY to the Fundamental
Frequency listed in l%ble l-23.
HP 85901 Spectrum Analyzer
Calibrating 1-93
22.
Non-Harmonic Spurious Outputs
11. On the microwave spectrum analyzer, press [ PEAK
( MKR -> REF LVL]. Wait for another sweep to finish.
SEARCH ].
Press (jMKRJ
12. Record the microwave spectrum analyzer marker-amplitude reading in Table 1-23 as the
Fundamental Amplitude.
13. Set the microwave spectrum analyzer
in the first row of ‘Iable l-24.
CSTART
FREQ ),
C-1, and (j-1 as indicated
14. Press (SINGLE] on the microwave spectrum analyzer and wait for the sweep to finish. Press
(PEAK SEARCH].
15. Verify that the marked signal is not the fundamental or a harmonic of the fundamental as
follows:
a. Divide the marker frequency by the fundamental frequency (the spectrum analyzer
CENTER FREQ setting). For example, if the marker frequency is 30.3 MHz and the
fundamental frequency is 10 MHz, dividing 30.3 MHz by 10 MHz yields 3.03.
b. Round the number calculated in step a the nearest whole number. In the example
above, 3.03 should be rounded to 3.
c. Multiply the fundamental frequency by the number calculated in step b. Following the
example, multiplying 10 MHz by 3 yields 30 MHz.
d. Calculate the difference between the marker frequency and the frequency calculated in
step c above. Continuing the example, the difference would be 300 kHz.
e. Due to span accuracy uncertainties in the microwave spectrum analyzer and center
frequency uncertainties in the spectrum analyzer, the marker frequency might not equal
the actual frequency. Given the marker frequency, check if the difference calculated in
step d is within the appropriate tolerance:
For marker frequencies ~55 MHz, tolerance = 5750 kHz
For marker frequencies >55 MHz, tolerance = f10 MHz
f. If the difference in step d is within the indicated tolerance, the signal in question is the
fundamental signal (if the number in step b = 1) or a harmonic of the fundamental (if
the number in step b >l). This response should be ignored.
16. Verify that the marked signal is a true response and not a random noise peak by pressing
[SINGLEI) to trigger a new sweep and press [PEAK SEARCH]. A true response will remain at the
same frequency and amplitude on successive sweeps but a noise peak will not.
17. If the marked signal is either the fundamental or a harmonic of the fundamental (see
step 15) or a noise peak (see step 16), move the marker to the next highest signal by
pressing ISHIFT), SPEAK SEARCH ]. Continue with step 19.
18. If the marked signal is not the fundamental or a harmonic of the fundamental (see step
15) and is a true response (see step 16), calculate the difference between the amplitude of
marked signal and the Fundamental Amplitude as listed in ‘Ihble l-23.
For example, if the Fundamental Amplitude for a fundamental frequency of 10 MHz is
+ 1.2 dBm and the marker amplitude is -40.8 dBm, the difference is -42 dBc.
Record this difference as the Non-Harmonic Response Amplitude for the appropriate
spectrum analyzer CENTER FREQ and microwave spectrum analyzer START and STOP
FREQ settings in Table l-24.
Non-Harmonic Amplitude = Marker Amplitude - Fundamental Amplitude
19. If a true non-harmonic spurious response is not found, record “NOISE” as the
Non-Harmonic Response Amplitude in Table l-24 for the appropriate spectrum analyzer
CENTER FREQ and microwave spectrum analyzer START and STOP FREQ settings.
1-94 Calibrating
HP 85901 Spectrum Analyzer
22. Non-Harmonic Spurious Outputs
20. Repeat steps 14 through 19 for the remaining microwave spectrum analyzer settings for
[ START FREQ), (STOP), and [j) for the spectrum analyzer CENTER FREQ setting of
10 MHz.
21. Repeat steps 8 through 20 with the spectrum analyzer CENTER FREQ set to 900 MHz.
22. Repeat steps 8 through 20 with the spectrum analyzer CENTER FREQ set to 1.8 GHz.
23. Locate in Table l-24 the most-positive Non-Harmonic Response Amplitude. Record this
amplitude as TR Entry 1 in the performance test record.
‘Ihble l-23. Fundamental Response Amplitudes Worksheet
‘Ihble l-24. Non-Harmonic Responses Worksheet
Non-Harmonic Response
Amplitude (dBc)
Microwave Spectrum
Analyzer Settings
start stop
Res
@lo MHz
Freq Freq
BW
Center
(MHz) (MHz)
“,
Measurement
Uncertaintv
(W
fieq
0.1*
5.0
10 kHz
+ 1.55/-1.80
5.0
55
100 kHz
+ 1.55/-1.80
55
1240
1 MHz
+ 1.55/- 1.80
1240
1800
1 MHz
+ 1.55/- 1.80
* Option 011: Set START FREQ to 1 MHz.
HP 85901 Spectrum Analyzer
Calibrating 1-95
23. Tracking Generator Feedthrough
This procedure is only for spectrum analyzers equipped with Option 010 or 011.
The tracking generator output is connected to the spectrum analyzer input and the tracking is
adjusted at 300 MHz for a maximum signal level. The tracking generator output is terminated
and set for 0 dBm output power (maximum output power). The spectrum analyzer input is also
terminated. The noise level of the spectrum analyzer is then measured at several frequencies.
There is no related adjustment procedure for this performance test.
Equipment Required
Termination, 50 9 (2 required)
Adapter, Type N (m) to BNC (f)
Cable, Type N, 62 cm (24 in)
Cable, 23 cm (9 in)
Additional Equipment for Option 011
Termination, 75 n Type N (m) (2 required)
Adapter, Type N (f) to BNC (m), 75 C (2 required)
Cable, BNC, 75 61
Caution
Use only 75 61 cables, connectors, or adapters on the 75 D input of an
Option 011 or damage to the input connector will occur.
SPECTRUM ANALYZER
75n OPTION 011)
--&
5On 1‘ERM I NAl‘ I O N
(OPTION Oil: USE 75R
TERMINATION)
TYPE N
CABLE
(OPTION 011:
USE 75fl BNC
CABLE)
50~ T E R M I N A T I O N
(OPTION
011:
USE
75n TERMINATION)
Figure l-29. Tracking Generator Feedthrough Test Setup
1-96 Calibrating
HP 85901 Spectrum Analyzer
X Y128
23. Tracking Generator Feedthrough
Procedure
1. Connect the Type N cable between the RF OUT 50 62 and INPUT 50 61 connectors on the
spectrum analyzer. See Figure l-29.
O-ption 011 only: Connect the 75 62 BNC cable between the RF OUT 75 fl and INPUT 75 62
connectors on the spectrum analyzer.
2. Press ljj%i%Q on the spectrum analyzer and set the controls as follows:
FREQUENCY) 300 (MHz)
&lB
3. On the spectrum analyzer, press the following keys:
INIKR)
[AUX] Track Gen
SRC PWR ON OFF 5L--dBm)
Option 011 only: 42 + dBm (+ 42 dBmV).
4. On the spectrum analyzer, press TRACKING PEAK . Wait for the PEAKING message to
disappear.
5. Connect the CAL OUTPUT to the INPUT 50 9.
Caption 011 only: Connect the CAL OUTPUT to the INPUT 75 62.
Set the spectrum analyzer controls as follows:
@iiziEF) 20 @iG)
Option 011 only: CAMPLITUDE) REF LVL 28.75 I+dBm)
AMPLITUDE
P!?ii!F
ATTEN AUTO MAN O(dB)
6. On the spectrum analyzer, press the following keys:
CPEAK S E A R C H )
[MKR] MK TRACK OM OFF (ON)
ISPAN) 100 IkHz)
Wait for the AUTO ZOOM message to disappear then set the controls as follows:
(BW) VID l3W AUTO MAN 30 1Hz)
[MKR- MK TRACK ON OFF (OFF)
HP 95901 Spectrum Analyzer
Calibrating 1-97
23.
7.
Tracking Generator Feedthrough
Press C-1 and wait for completion of a new sweep. Press the following spectrum
analyzer keys:
(PEAK SEARCH]
(jGKEEF) More 1 of 3
REF LVL OFFSET
Subtract the (MKR) amplitude reading from -20 dBm and enter the result as the
REF LVL OFFSET.
For example, if the marker reads -20.21 dBm, enter + 0.21 dB
[-20 dBm - (-20.21 dBm) = +0.21 dB].
Example for Option 011: If the marker reads 26.4 dBmV, enter +2.35 dB
(28.75 dBmV - 26.4 dBmV = 2.35 dB).
REF LVL OFFSET
8.
dB
Connect one 50 62 termination to the spectrum analyzer INPUT 50 61 and another to the
tracking generator’s RF OUT 50 61.
Option 011 only: Connect one 75 62 termination to the spectrum analyzer INPUT 75 62 and
another to the tracking generator’s RF OUT 75 0.
9.
Press [AUXJ Track Gen , then SRC PWR ON OFF (OFF) on the spectrum analyzer.
10. Set the spectrum analyzer controls as follows:
(pKimE)
1
0
(--dBm)
Option 011 only: C-1 REF LVL 38.75 (+dBm)
@cl
VID BW AUTO MAN (AUTO)
(MKR) More i of 2
MARKER ALL OFF
ITRIG)
SWEEP CONT SGL (CONT)
11. Press the following spectrum analyzer keys:
CPEAK S E A R C H ]
(jMKRFCTN) MK TRACK ON OFF (ON)
(MKR->) MARKER ->REF LVL
(SPAN)20
Wait for the AUTO ZOOM message to disappear, then press CMKRFCTNI), MK TRACK ON OFF
(OFF).
1-99 Calibrating
HP 95901 Spectrum Analyzer
23. Tracking Generator Feedthrough
12. Press CFREQUENCY) and adjust the center frequency until the LO feedthrough peak is on the
left-most graticule line. Set the spectrum analyzer controls as follows:
ISPAN) 50 IkHz)
(pFiKEq 50 w
Option 011 only: [AMPLITUDE) REF LVL 1.25 C-J
VID BW AUTO MAN 30IHz)
13. On the spectrum analyzer, press [AUXJ Track Gen , SRC PWR ON OFF 0 [+dBm].
Option 011 only: 42.8 [+dBm] (+42.8 dBmV).
14. Press (SGL] and wait for completion of a new sweep. Press @i’KKY] then
DSP LINE ON OFF (ON).
15. Adjust the display line so that it is centered on the average trace noise, ignoring any
residual responses. Record the display line amplitude setting in Table l-25 as the noise level
at 1 MHz.
16. Repeat steps 14 and 15 for the remaining Tracking Generator Output Frequencies
(spectrum analyzer CENTER FREQ) listed in Table l-25.
17. In Table l-25, locate the most positive Noise Level Amplitude. Record this amplitude as
TR Entry 1 in the performance test record.
lhble l-25. TG Feedthrough Worksheet
lhcking Generator
Output Frequency
Noise Level
Amplitude
(dBm or dBmV)
Measuremenl
Uncertainty
(W
1 MHz
+ 1.15/-1.24
20MHz
+ 1.15/-1.24
50 MHz
+ 1.15/-1.24
100 MHz
+1.15/-1.24
250MHz
+ 1.15/-1.24
400MHz
+ 1.15/-1.24
550MHz
+ 1.15/-1.24
700 MHz
+1.15/-1.24
850MHz
+ 1.15/-1.24
1000 MHz
+1.15/-1.24
1150 MHz
+ 1.15/-1.24
1300 MHz
+ 1.151-1.24
1450 MHz
+ 1.15/-1.24
1600 MHz
+1.15/-1.24
1750 MHz
+1.15/-1.24
HP 95901 Spectrum Analyzer
Calibrating 1-99
Performance Verification Test Record
‘0.ble l-26. Performance Verification Test Record
Hewlett-Packard
Company
Report No.
Address:
Date
(e.g. 10 SEP 1989)
Model HP 8590L
Serial No.
Options
Firmware
Revision
Customer
Tested by
Ambient temperature
Relative humidity
%
Hz (nominal)
Power mains line frequency
Test Equipment Used:
Description
Synthesized
Model No.
Trace No.
Sweeper
Synthesizer/Function Generator
Synthesizer/Level
Generator
AM/FM Signal Generator
Measuring Receiver
Power Meter
RF Power Sensor
High-Sensitivity Power Sensor
Microwave Frequency Counter
Universal Frequency Counter
Frequency Standard
Power Splitter
Minimum Loss Adapter
(Options 001 and 011 only)
50 MHz Low-Pass Filter
50 Q Termination
75 D Termination (Options 001
and 011 only)
Microwave Spectrum Analyzer
(Options 010 and 011 only)
Notes/Comments:
l-1 00 Calibrating
HP 95901 Spectrum Analyzer
Cal Due Date
lttble l-26. Performance Verification Test Record (page 2 of 7)
Hewlett-Packard Company
Model HP 859OL
Report No.
Serial No.
Date
Measurement
Results Measured
Test Description
Min
(TR Entry)
Max
Uncertainty
I. 10 MHz Reference Accuracy
F r e q u e n c y
Settability
-150 Hz
E r r o r
(1)
+ 150 Hz
f4.2 x lo-’
2. Frequency Readout Accuracy
and Marker Count Accuracy
Frequency (MHz)
Frequency Readout Accuracy
SPAN
20 MHz
1.49918
(1)
1.50082
f2.5 Hz
10 MHz
1.49958
(2)
1.50042
f 12.5 Hz
1 MHz
1.4999680
(3)
1.500032
f25.0 Hz
SPAN
(CNT RES = 10 Hz) 1 MHz
1.49999989
(4)
1.50000011
f 1 H2
(CNT RES = 100 Hz) 20 MHz
1.4999989
(5)
1.5000011
f 1 Hz
Suppression at 10 kHz
(1)
-60 dBc
f1.0 dE
Suppression at 20 kHz
(2)
-70 dBc
fl.O dE
(3)
-75 dBc
fl.O dE
Sideband Below Signal
(1)
-65 dBc
f 1.0 dE
Sideband Above Signal
(2)
-65 dBc
f 1.0 dE
MKRA Reading(1)
1554.00 MHz
f6.37 MHz
8.30 MHz
f35.4 kHz
Marker Count Accuracy
5. Noise Sidebands
Suppression at 30 kHz
L System Related Sidebands
5. Frequency Span Readout
Accuracy
SPAN
1800 MHz
1446.00 MHz
10.10 MHz
7.70 MHz
(2)
10.00 MHz
7.80 MHz
(3)
8.20 MHz
f3.54 kHz
100.00 kHz
78.00 kHz
(4)
82.00 kHz
6354 Hz
99.00 kHz
78.00 kHz
(5)
82.06 kHz
f354 Hz
10.00 kHz
7.80 kHz
(6)
8.20 kHz
f3.54 Hz
(1)
250 Hz
f45.8 Hz
i. Residual FM
HP 85901 Spectrum Analyzer
C a l i b r a t i n g l-101
‘able l-26. Performance Verification Test Record (page 3 of 7)
Hewlett-Packard Company
Model HP 859OL
Report No.
Serial No.
Date
Test Description
Results Measured
Mill
Measurement
(TR Entry)
Max
Uncertainty
7. Sweep Time Accuracy
SWEEP TIME
20 ms
MKRA R
15.4 ms
e
a
(1)
d
i
n
p
16.6 ms
ho.057 rnt
f0.283 ms
100 ms
77.0 ms
(2)
83.0 ms
1s
770.0 ms
(3)
830.0 ms
f2.83 rn$
10 s
7.7 s
(4)
8.3 s
f23.8 ms
8. Scale Fidelity
Log Mode
Cumulative Error
dB from Ref Level
l-l 02 Calibrating
0
0 (Ref)
-4
-4.34 dB
(1)
+ 3.66 dB
f0.06 dB
-8
-8.38 dB
(2)
-7.62 dB
f0.06 dB
0 (Ref)
0 (Ref)
-12
- 12.42 dB
(3)
-11.58 dB
ho.06 dB
-16
-16.46 dB
(4)
-15.54 dB
f0.06 dB
-20
-20.50 dB
(5)
- 19.50 dB
f0.06 dB
-24
-24.54 dB
(6)
-23.46 dB
f0.06 dB
-28
-28.58 dB
(7)
-27.42 dB
ho.06 dB
-32
-32.62 dB
(8)
-31.38 dB
f0.06 dB
-36
-36.66 dB
(9)
-35.34 dB
f0.06 dB
-40
-40.70 dB
(10)
-39.30 dB
ho.06 dB
-44
-44.74 dB
(11)
-43.26 dB
f0.06 dB
ho.06 dB
-48
-48.78 dB
(12)
-47.22 dB
-52
-52.82 dB
(13)
-51.18 dB
ho.06 dB
-56
-56.86 dB
(14)
-55.14 dB
f0.06 dB
-60
-60.90 dB
(15)
-59.10 dB
fO.ll dB
-64
-64.94 dB
(1’3)
-63.06 dB
ho.11 dB
-68
-68.98 dB
(17)
-67.02 dB
fO.ll dB
HP 85901 Spectrum Analyzer
Table l-26. Performance Verification Test Record (page 4 of 7)
Hewlett-Packard Company
Model HP 8590L
Report No.
Serial No.
Date
Test Description
Results Measured
Mill
(TR Entry)
Measurement
Max
Uncertainty
8. Scale Fidelity (continued)
Log Mode
Incremental Error
dR from Ref Level
0
O(Ref)
-4
-0.4 dB
(18)
0 @f)
+0.4 dB
-8
-0.4 dB
(19)
+0.4 dB
f0.06 dB
-12
-0.4 dB
f0.06 dB
-16
-0.4 dB
+0.4 dB
f0.06 dB
-20
-0.4 dB
(20)
(21)
(22)
+0.4 dB
+0.4 dB
f0.06 dB
-24
-0.4 dB
(23)
+0.4 dB
f0.06 dB
-28
-0.4 dB
(24)
+0.4 dB
f0.06 dB
-32
-0.4 dB
(25)
+0.4 dB
f0.06 dB
-36
-0.4 dB
(26)
to.4 dB
f0.06 dB
-40
-0.4 dB
(27)
+0.4 dB
f0.06 dB
0 (Ml
f0.06 dE
-44
-0.4 dB
(28)
+0.4 dB
f0.06 dB
-48
-0.4 dB
(29)
+0.4 dB
60.06 dB
-52
-0.4 dB
(30)
i-O.4 dB
f0.06 dB
-56
-0.4 dB
(31)
+0.4 dB
f0.06 dB
-60
-0.4 dB
(32)
+0.4 dB
fO.ll dB
Linear Mode
% of Ref Level
Log-to-Linear
100.00
O(Ref)
70.70
151.59 mV
(33)
165.01 mV
f1.84 mV
50.00
105.36 mV
(34)
118.78 mV
f1.84 mV
35.48
72.63 mV
(35)
86.05 mV
f1.84 mV
25.00
49.46 mV
(36)
82.88 mV
f1.84 mV
-0.25 dB
(37)
+0.25 dB
f0.05 dB
O(Ref)
O(Ref)
Switching
HP 85901 Spectrum Analyzer
Calibrating l-1 03
‘Ihble l-26. Performance Verification Test Record (page 5 of 7)
Hewlett-Packard Company
Model HP 8590L
Report No.
Serial No.
Date
Measurement
Results Measured
Test Description
Max
(TR Entry)
Min
Uncertainty
3. Reference Level Accuracy
M
Reference Level (dBm)
-20
0 (Ref)
-10
-0.40 dB
0
-0.50 dB
-30
-0.40 dB
-40
-0.50 dB
-50
-0.80 dB
o Log
d
e
0 (Ref)
0 (Refl
f0.06 dB
(1)
+ 0.40 dB
(2)
t 0.50 dB
f0.06 dB
(3)
+ 0.40 dB
f0.06 dB
(4)
t 0.50 dB
f0.08 dB
(5)
+ 0.80 dB
f0.08 dB
-60
-1.00 dB
(6)
tl.OOdB
f0.12 dB
-70
-1.10 dB
(7)
+ 1.10 dB
~tO.12 dB
-80
-1.20 dB
(8)
t 1.20 dB
f0.12 dB
G-9
oLinear
d
+1.30dB
f0.12 dB
-90
-1.30 dB
M
Reference Level (dBm)
-20
-10
0 (Ref)
-0.40 dB
e
0 (Ref)
0 (Ref)
(10)
+ 0.40 dB
f0.06 dB
+ 0.50 dB
f0.06 dB
0
-0.50 dB
(11)
-30
-0.40 dB
(12)
+ 0.40 dB
f0.06 dB
-40
-0.50 dB
(13)
+ 0.50 dB
f0.08 dB
-50
-0.80 dB
(14)
+ 0.80 dB
f0.08 dB
-60
-1.00 dB
(15)
+ 1.00 dB
f0.12 dB
-70
-1.10 dB
(16)
-80
(17)
t 1.10 dB
t 1.20 dB
f0.12 dB
-1.20 dB
-1.30 dB
(18)
+1.30dB
f0.12 dB
-20.15 dB
(1)
- 19.85 dB
da
-90
f0.12 dB
.O. Absolute Amplitude
Calibration and Resolution
Bandwidth Switching
Uncertainties
Absolute Amplitude Uncertainty
Resolution Bandwidth Switching
Uncertainty
Resolution Bandwidth
3 kHz
l-104 Calibrating
1 kHz
0 (Ref)
-0.5 dB
0 VW
0 (Ref)
(2)
+ 0.5 dB
+ 0.07/-0.08 dB
9 kHz
-0.4 dB
(3)
+ 0.4 dB
10 kHz
-0.4 dB
(4)
+ 0.4 dB
t 0.07/-0.08 dB
t 0.07/-0.08 dB
30 kHz
-0.4 dB
(4
+ 0.4 dB
+ 0.07/-0.08 dB
100 kHz
-0.4 dB
(6)
+0.4 dB
t 0.07/-0.08 dB
120 kHz
-0.4 dB
(7)
+ 0.4 dB
+ 0.07/-0.08 dB
+ 0.07/-0.08 dB
300 kHz
-0.4 dB
(8)
+ 0.4 dB
1 MHz
-0.4 dB
+ 0.4 dB
+ 0.07/-0.08 dB
3 MHz
-0.4 dB
(9)
(10)
+ 0.4 dB
t 0.07/-0.08 dB
HP 85901 Spectrum Analyzer
‘Ihble l-26. Performance Verification Test Record (page 6 of 7)
Hewlett-Packard Company
Model HP 8590L
Report No.
Serial No.
Date
Test Description
Results Masured
Min
(TR Entry)
Measurement
Max
Uncertainty
1. Resolution Bandwidth
Accuracy
3 dB Resolution Bandwidth
3 MHz
2.4 MHz
(1)
3.6 MHz
1 MHz
0.8 MHz
(2)
1.2 MHz
f46 kHz
300 kHz
240 kHz
(3)
360 kHz
f13.8 kHz
100 kHz
80 kHz
(4)
120 kHz
f4.6 kHz
30 kHz
24 kHz
(5)
36 kHz
61.38 kHz
10 kHz
8 kHz
(6)
12 kHz
f460 Hz
3 kHz
2.4 kHz
(7)
3.6 kHz
+I38 Hz
1 kHz
0.8 kHz
(8)
1.2 kHz
f46 Hz
f138 kHz
6 dB EMI Bandwidth
9 kHz
7.2 kHz
(9)
10.8 kHz
f333 Hz
120 kHz
96 kHz
WY
144 kHz
f4.44 kHz
(1)
- 19.6 dBm
f0.2 dB
(2)
+ 29.15 dBmv
f0.2 dB
(1)
+ 1.5 dB
2. Calibrator Amplitude
Output Power
-20.4 dBm
Output Power for Option 001
+ 28.35 dBmv
3. Frequency Response
Max Positive Response
Max Negative Response
Peak-to-Peak Response
-1.5 dB
+ 0.321-0.33 dB
+ 0.321-0.33 dB
(2)
(3)
2.0 dB
+ 0.32/b0.33 dB
542.8 MHz
(1)
-55 dBc
fl.O dB
1142.8 MHz
(2)
-55 dBc
fl.O dB
Second Harmonic Distortion
(1)
-45 dBc
+ 1.861-2.27 dB
Third Order Intermodulation
Distortion
(2)
-54 dBc
+2.07/-2.42 dB
(1)
0.5 dB
+ 0.21/-0.22 dB
(1)
-115 dBm
+ 1.15/-1.25 dB
4. Other Input Related
Spurious Responses
5. Spurious Responses
6. Gain Compression
7. Displayed Average Noise
Frequency
400 kHz
1 MHz
(2)
-115 dBm
+ 1.15/-1.25 dB
1 MHz to 1.5 GHz
(3)
-115 dBm
+ 1.15/-1.25 dB
1.5 GHz to 1.8 GHz
(4)
-113 dBm
+ 1.15/-1.25 dB
Option 001 only: Frequency
1 MHz
(2)
-63 dBmV
+ 1.15/-1.25 dB
1 MHz to 1.5 GHz
(3)
-63 dBmV
+ 1.15/-1.25 dB
1.5 GHz to 1.8 GHz
(4)
-61 dBmV
+ 1.15/-1.25 dB
HP 95901 Spectrum Analyzer
Calibrating 1-l 05
‘Ihble l-26. Performance Verification Test Record (page 7 of 7)
Hewlett-Packard Company
Model HP 8590L
Report No.
Serial No.
Date
Test Description
Results Measured
(TR Entry)
Max
1
Measurement
Uncertainty
18. Residual Responses
150 kHz to 1.8 GHz
(1)
-90 dBn
+ 1.09/-1.15 dE
(1)
-38 dBm7
+ 1.09/-1.15 dE
(1)
+ 1.0 dE
+ 0.25/-0.26 dE
(2)
+ 0.75 dE
ho.033 dE
1.5 dE
f0.033 dE
(1)
+ 1.75 dE
+ 0.421-0.45 dB
(2)
+ 1.75 dE
+ 0.28/-0.28 dB
(3)
+ 1.75 dB
+ 0.241-0.24 dB
Option 001 only:
1 MHz to 1.8 GHz
19. Absolute Amplitude, Vernier,
and Power Sweep Accuracy
Option 010 or 011 only:
Absolute Amplitude Accuraq
-1.0 dE
Positive Vernier Accuraq
Negative Vernier Accuraq
-0.75 dE
Power Sweep Accuracy
f0.033 dE
(3)
(4)
20. Tracking Generator Level
Flatness
Option 010 only:
Maximum Flatness
100 kHz
300 kHz to 5 MHz
10 MHz to 1800 MHz
Minimum Flatness
100 kHz
-1.75 dB
(4)
+ 0.421-0.45 dB
300 kHz to 5 MHz
-1.75 dB
(5)
+ 0.28/-0.28 dB
10 MHz to 1800 MHz
-1.75 dB
(6)
+ 0.241-0.24 dB
Option 011 only:
Maximum Flatness
1 MHz to 1800 MHz
(1)
+1.75dB
+ 0.18/-0.39 dB
Minimum Flatness
1 MHz to 1800 MHz
-1.75 dB
+ 0.18/-0.39 dB
(2)
! 1. Harmonic Spurious Outputs
Option 010 or 011 only:
2nd Harmonic Level
3rd Harmonic Level
(1)
-25 dBc
+ 1.55/-1.80 dB
(2)
-25 dBc
+ 1.55/- 1.80 dB
(1)
- 30 dBc
+ 1.55/- 1.80 dB
(1)
(1)
- 106 dBm
+ 1.15/-1.24 dB
57.24 dBmV
+ 1.15/-1.24 dB
12. Non-Harmonic Spurious
outputs
Option 010 or 011 only:
Highest Non-Harmonic
Response Amplitude
:3. Tracking Generator
Feedthrough
Option 010 only:
Option 011 only:
l-1 06 Calibrating
HP 95901 Spectrum Analyzer
2
Specifications and Characteristics
This chapter contains specifications and characteristics for the HP 8590D spectrum analyzer.
The specifications and characteristics in this chapter are listed separately. The specifications
are described first, then followed by the characteristics.
General
General specifications and characteristics.
Frequency
Frequency-related specifications and characteristics.
Amplitude
Amplitude-related specifications and characteristics.
Option
Option-related specifications and characteristics.
Physical
Input, output and physical characteristics.
The distinction between specifications and characteristics is described as follows.
n
Specifications describe warranted performance over the temperature range 0 “C to + 55 “C
(unless otherwise noted). The spectrum analyzer will meet its specifications after 2 hours
of storage at a constant temperature, within the operating temperature range, 30 minutes
after the spectrum analyzer is turned on and after the CAL frequency, and CAL amplitude
routines have been run.
n
Characteristics provide useful, but nonwarranted information about the functions and
performance of the spectrum analyzer. Characteristics are specifically identified.
H Typical Performance, where listed, is not warranted, but indicates performance that most
units will exhibit.
1 Nominal Value indicates the expected, but not warranted, value of the parameter.
HP 85901 Spectrum Analyzer
Specifications and Characteristics
2-l
General Specifications
All specifications apply over 0 “C to +55 “C unless equipped with Option 015 or 016. The
analyzer will meet its specifications after 2 hours of storage at a constant temperature, within
the operating temperature range, 30 minutes after the analyzer is turned on and after CAL
FREQ and CAL AMPTD have been run.
Temperature Range
Operating
oocto +55oc*
Storage
-40 OC to + 75 OC
* 0 “C to + 50 ‘C with Option 015 or Option 016 operating and carrying case.
EMI Compatibility
Conducted and radiated emission is in compliance with
CISPR Pub. 1111990 Group 1 Class A.
Audible Noise
<37.5 dBA pressure and <5.0 Bels power (ISCDP7779)
Power Requirements
ON (LINE 1)
90 to 132 V rms, 47 to 440 Hz
195 to 250 V rms, 47 to 66 Hz
Power consumption <500 VA; < 180 W
Standby (LINE 0)
Environmental Specifications
2-2
Specifications and Characteristics
Power consumption <7 W
Type tested to the environmental specifications of
Mil-T-28800 class 5
HP 95901 Spectrum Analyzer
Frequency Specifications
Frequency Specifications
Frequency Range
50 0
75 Q (Option 001)
9 kHz to 1.8 GHz
1 MHz to 1.8 GHz
Frequency Reference
f2 x lO+/year
Aging
Settability
Temperature
Stability
f0.5 x 10-s
f5 x 10-s
Frequency Readout Accuracy
(Start, Stop, Center, Marker)
*(frequency readout x frequency reference error* +
span accuracy + 1% of span + 20% of RBW + 100 Hz)~
* frequency reference error = (aging rate x period of time since adjustment + initial achievable accuracy +
temperature stability). See “Frequency Characteristics.”
$ See “Drift” under “Stability” in Frequencv Characteristics.
Marker Count Accuracyt
Frequency Span 5 10 MHz
f(marker frequency x frequency reference error* +
counter resolution + 100 Hz)
Frequency Span >lO MHz
f(marker frequency x frequency reference error* +
counter resolution + 1 kHz)
Counter Resolution
Frequency Span 5 10 MHz
Selectable from 10 Hz to 100 kHz
Frequency Span > 10 MHz
Selectable from 100 Hz to 100 kHz
* frequency reference error = (aging rate x period of time since adjustment + initial achievable accuracy and
temperature stability). See “Frequency Characteristics.”
1 Marker level to displayed noise level > 25 dB, RBW/Span 2 0.01. Span 5 300 MHz. Reduce SPAN annotation is
displayed when RBWlSpan < 0.01.
Frequency Span
Range
0 Hz (zero span), 10 kHz to 1.8 GHz
(Option ISO)* 0 Hz (zero span), 1 kHz to 1.8 GHz
Resolution
Four digits or 20 Hz, whichever is greater.
Accuracy
Span 5 10 MHz
412% of spans
Span > 10 MHz
f3% of span
* Not available in 8590L.
§(OHion 130) For spans < 10 kHz. add an additional 10 Hz resolution error.
HP 95901 Spectrum Analyzer
Specifications and Characteristics
2-3
Frequency Specifications
Frequency Sweep Time
Range
20 ms to 100 s
(Option lOl)*** 20 ps to 100 s for span = 0 Hz
Accuracy
20 ms to 100 s
20 ps to <20 ms (Option 1 Ol)* * *
53%
f2%
Free Run, Single, Line, Video, External
I*** Not available in 859OL8592L.
Resolution Bandwidth
1 kHz to 3 MHz, 8 selectable resolution (3 dB) bandwidths in l-3-10 sequence.
9 kHz and 120 kHz (6 dB) EMI bandwidths.
Range
(Option lSO)* * * Adds 30, 100 and 300 Hz (3 dB) bandwidths and 200 Hz (6 dB) EMI bandwidth.
Accuracy
3 dB bandwidths
f20%
* * * Not available in 8590L 8592L.
&ability
Noise Sidebands
(1 kHz RBW, 30 Hz VBW and sample detector)
>lO kHz offset from CW signal
2 - 90 dBc/Hz
>20 kHz offset from CW signal
<-100
dBc/Hz
<- 105 dBc/Hz
>30 kHz offset from CW signal
Residual FM
1 kHz RBW, 1 kHz VBW
1250 Hz pk-pk in 100 ms
30 Hz RBW, 30 Hz VBW (Option l,O)***
530 Hz pk-pk in 300 ms
System-Related Sidebands
>30 kHz offset from CW signal
’
l l
<-65
dBc
-
Not available in 8590L.
Calibrator Output Frequency
I300 MHz f(freq. ref. error* x 300 MHz)
* frequency reference error = (aging rate x period of time since adjustment + initial achievable accuracy +
temperature stability). See “Frequency Characteristics.”
2-4
Specifications and Characteristics
HP 95901 Spectrum Analyzer
I
Amplitude Specifications
Amplitude Specifications
Amplitude Range
50 0
-115 dBm to +30 dBm
50 0 (Q&ion ISO)* * *
- 130 dBm to + 30 dBm
75 0
-63 dBmV to + 72 dBmV
75 Q (Options 001 and ISO)* * *
-78 dBmV to + 72 dBmV
*** Not available in 8590L.
Maximum Safe Input Level
Average Continuous Power
Peak Pulse Power
Gain CompressionS
> 10 MHz
SO.5 dB (total power at input mixer’ = -10 dBm)
* Mixer Power Level (dBm) = Input Power (dBm) - Input Attenuation (dB).
1 (Option 130) If RBW < 300 Hz, this applies only if signal separation 2 4 kHz and signal amplitudes 5 Reference
Level + 10 dB. Not available in 8590L 8592L.
Displayed Average Noise Level
1 kHz RBW
(Input terminated, 0 dB attenuation, 30 Hz VBW, sample detector)
75 0 (Option 001)
60 0
400 kHz to 1 MHz
S-115 dBm
N/A
1 MHz to 1.5 GHz
<-115
dBm
s-113 dBm
<-63
dBmV
s-61 dBmV
1.5 GHz to 1.8 GHz
30 Hz RBW (Option 130)“’
400 kHz to 1 MHz
S-130 dBm
N/A
1 MHz to 1.5 GHz
<-130 dBm
S-128 dBm
<-78
dBmV
s-76 dBmV
1.5 GHz to 1.8 GHz
1 *** Not available in 8590L.
Spurious Responses
Second Harmonic Distortion
5 MHz to 1.8 GHz
<-70 dBc for -45 dBm tone at input mixer.*
Third Order Intermodulation Distortion
5 MHz to 1.8 GHz
Other Input Related Spurious
c-70 dBc for two -30 dBm tones at input mixer* and >50 kHz
separation.
<-65 dBc at 230 kHz offset, for -20 dBm tone at input mixer Il.8 GHz.
* Mixer Power Level (dBm) = Input Power (dBm) - Input Attenuation (dB). (For analyzers with Input 75 0, add
another 5.7 dB to the lnvut Attenuator.)
HP 95901 Spectrum Analyzer
Specifications and Characteristics 2-5
Amplitude Specifications
(Input terminated and 0 dB attenuation)
Residual Responses
75 n
500
(Option 001)
150 kHz to 1 MHz
<-90 dBm
N/A
1 MHz to 1.8 GHz
<-90 dBm
<-38 dBmV
Display Range
Log Scale
0 to -70 dB from reference level is calibrated; 0.1, 0.2, 0.5 dB/division and 1
to 20 dB/division in 1 dB steps; eight divisions displayed.
Linear Scale
eight divisions
Scale Units
dBm, dBmV, dBpV, mV, mW, nV, nW, pW, pV, PW, V, and W
Marker Readout Resolution
0.05 dB for log scale
0.05% of reference level for linear scale
Fast Sweep Times for Zero Span
20 ps to 20 ms (Option 101 orSOl)**"
Frequency 5 1 GHz
0.7% of reference level for linear scale
Frequency > 1 GHz
1.0% of reference level for linear scale
*** Not available in 8590L 8592L.
I-
Zeference Level
Range
Log Scale
Minimum amplitude to maximum amplitude * *
Linear Scale
-99 dBm to maximum amplitude * *
Resolution
Log Scale
50.01 dB
Linear Scale
60.12% of reference level
Accuracy
rreferenced to -20 dBm reference level, 10 dB input
attenuation, at a single frequency, in a fixed RBW)
0 dBm to -59.9 dBm
h(O.3 dB + .Ol x dB from -20 dBm)
-60 dBm and below
1 kHz to 3 MHz RBW
k(0.6 dB + .Ol x dB from -20 dBm)
30 Hz to 300 Hz RBW (O-ption lSO)***
k(O.7 dB + .Ol x dB from -20 dBm)
1
* See “Amplitude Range.”
** Not available in 8590L 8592L.
(10 dB input attenuation)
Frequency Response
9 kHz to 1.8 GHz
Absolutes
Relative Flatnesst
f1.5 dB
fl.O dB
t Referenced to midpoint between highest and lowest frequency response deviations.
5 Referenced to 300 MHz CAL OUT.
Calibrator Output Amplitude
50 n
75 n fmion
2-6
-20 dBm f0.4 dB
001)
Specifications and Characteristics
+ 28.75 dB mV f0.4 dB
HP 95901 Spectrum Analyzer
Amplitude Specifications
Absolute Amplitude Calibration Uncertaintytt
f0.15 dB
$$ Uncertainty in the measured absolute amplitude of the CAL OUT signal at the reference settings after CAL FREQ
and CAL AMPTD self-calibration. Absolute amplitude reference setting are: Reference Level -20 dBm; Input
Attenuation 10 dB; Center Frequency 300 MHz; Res BW 3 kHz; Video BW 300 Hz; Scale Linear; Span 50 kHz; Sweep
Time Coupled, Top Graticule (reference level), Corrections ON.
Input Attenuator
Ran&
0 to 60 dR. in 10 dR stf=ns
Resolution Bandwidth Switching Uncertainty
3 kHz to 3 MHz RBW
(At reference level, referenced to 3 kHz RBW)
f0.4 dB
1 kHz RBW
ho.5 dB
30 Hz to 300 Hz (Option 130)***
f0.6 dB
* * * Not available in 8590L 8592L.
Linear to Log Switching
f0.25 dB at reference level
Xsplay Scale Fidelity
Log Maximum Cumulative
0 to -70 dB from Reference Level
3 kHz to 3 MHz RBW
f (0.3 dB + 0.01 x dB from reference level)
RBW 5 1 kHz
f (0.4 dB + 0.01 x dB from reference level)
Log Incremental Accuracy
0 to -60 dB from Reference Level
Linear Accuracv
f0.4 dBl4 dB
*3% of reference level
HP 95901 Spectrum Analyzer
Specifications and Characteristics
2-7
Option Specifications
Tracking Generator Specifications (Option 010 or 011)
All specifications apply over 0 o C to + 55 o C * . The spectrum-analyzer/tracking-generator
combination will meet its specifications after 2 hours of storage at a constant temperature
within the operating temperature range, 30 minutes after the spectrum-analyzer/trackinggenerator is turned on and after CAL FREQ, CAL AMPTD, CAL TRK GEN, and
TRACKING PEAK have been run.
30 minutes
Warm-Up
Output Frequency
Range
n (Option 010)
n (Option 011)
50
75
100 kHz to 1.8 GHz
1 MHz to 1.8 GHz
Output Power Level
Range
50
75
n (Option 010)
n (Option 011)
Oto-15dBm
+42.8 to + 27.8 dBmV
Resolution
0.1 dB
Absolute Accuracy
*1.5 dB (at 300 MHz and -10 dBm source power)
(Option 011: use +3&8 dBmV instead of -10 dBm)
Vernier
Range
15 dB
Accuracy
fl .O dB (referenced to - 10 dBm source power)
(Option 011: referenced to +38.8 dBmV instead of -10 dBm)
htput Power Sweep
Range
50
75
n (Option 010)
n (Option 011)
- 15 dBm to 0 dBm
+27.8 to + 42.8 dBmV
Resolution
0.1 dB
Accuracy (zero span)
<2 dB peak-to-peak
Output Flatness
(referenced to 300 MHz)
f1.75 dB
Spurious Outputs
50
n
(Option 010)
75 tl (Option 011)
2-9
(0 dBm output, 100 kHz to 1.8 GHz)
(+42.8 dBmV output, 1 MHz to 1.8 GHz)
Harmonic Spurs
<-25 dBc
Nonharmonic Spurs
<-30 dBc
Specifications and Characteristics
HP 95901 Spectrum Analyzer
I
Option Specifications
Dynamic Range
Tracking Generator Feedthrough
50 Q(Option 010)
75 il (Option 011)
c-106 dBm
c-57.24 dBmV
HP 85901 Spectrum Analyzer
Specifications and Characteristics
2-9
Frequency Characteristics
These are not specifications. Characteristics provide useful but nonwarranted information
about instrument performance.
Frequency Reference
1
Initial Achievable Accuracy
50.5 x 10-s
Aging
fl.O x 10e7/day
Stability
Drift* (after warmup at stabilized temperature)
<2 kHz/minute of sweep time
Frequency Span 5 10 MHz, Free Run
* Because the analyzer is locked at the center frequency before each sweep, drift occurs only during the time of one
sweep. For Line, Video or External trigger, additional drift occurs while waiting for the appropriate trigger signal.
Resolution Bandwidth (-3 dB)
1 kHz to 3 MHz, selectable in 1, 3 and 10 increments, and 5 MHz.
Resolution bandwidths may be selected manually, or coupled to
frequency span.
Range
(Option lSO)* * * Adds 30 Hz, 100 Hz, and 300 Hz bandwidths.
Synchronously tuned four poles. Approximately Gaussian shape.
Shape
60 dBl3 dB Bandwidth Ratio
Resolution Bandwidth
100 kHz to 3 MHz
15:l
30 kHz
16:l
3 kHz to 10 kHz
15:l
1 kHz
16:l
40 dBf3 dB Bandwidth Ratio (Option 1307 * *
Resolution Bandwidth
30 Hz to 300 Hz
’ * * Not available in 8590L 8592L.
Video Bandwidth (-3 dB)
30 Hz to 1 MHz, selectable in 1, 3, 10 increments, accuracy f30% and 3 MHz.
Video bandwidths may be selected manually, or coupled to resolution bandwidth
and frequency span.
Range
(Option lSO)* * * Adds 1, 3, and 10 Hz bandwidths.
Post detection, single pole low-pass filter used to average displayed noise.
Shape
(Option lSO)*** Bandwidths below 30 Hz are digital bandwidths with anti-aliasing filtering.
*** Not available in 859OL 8592L.
2-10
Specifications and Characteristics
HP 85901 Spectrum Analyzer
Frequency Characteristics
FFT Bandwidth Factors
FLATTOP
HANNING
UNIFORM
Noise Equivalent Bandwidtht
3.63x
1.5x
lx
3 dB Bandwidtht
3.60x
1.48x
lx
Sidelobe Height
<-90 dB
-32 dB
-13 dB
0.10 dB
1.42 dB
3.92 dB
2.6
9.1
>300
Amplitude Uncertainty
Shape Factor (60 dB BWl3 dB BW)
t Multiply entry by one-divided-by-sweep time.
Input Level
> (-60 dBm + attenuator setting)
Signal Level
0 to -30 dB below reference level
FM Offset
Resolution
400 Hz nominal
FM Deviation (FM GAIN)
Resolution
1 kHz nominal
Range
10 kHz to 1 MHz
Bandwidth
FM deviation/:!
FM Linearity (for modulating frequency < bandwidth/loo)
5 1% of FM deviation + 290 Hz
HP 85901 Spectrum Analyzer
Specifications and Characteristics
2-l 1
Amplitude Characteristics
These are not specifications. Characteristics provide useful but nonwarranted information
about instrument performance.
Negligible error
Log Scale Switching Uncertainty
Input Attenuation Uncertainty*
Attenuator Setting
0 dB
f0.5 dB
10 dB
Reference
20 dB
f0.5 dB
30 dB
f0.6 dB
40 dB
f0.8 dB
50 dB
fl.O dB
60 dB
* Referenced to 10 dB input attenuator setting from 9 kHz to 1.8 GHz. See the “Specifications” table under
“Freauencv Resnonse. ”
Input Attenuator Repeatability
f0.03 dB
300 MHz
(Attenuator setting 10 to 60 dB)
RF Input SWR
DYNAMIC RANGE
NOMINAL DYNAMIC RANGE
dB
- SENSITIVITY 1 kHZ RBW
iH,RD ORDER
- - -. SECOND
ORDER lNTERMOD
DISTORTION
40
//,
”
,
,
/
50
‘:
om
5”
<=
ZY
&c
60
y
,
70
80
90
100
- 7 0
- 6 0
- 5 0
-40
-30
-20
MIXER LEVEL
Dynamic Range
2-12
Specifications and Characteristics
HP 85901 Spectrum Analyzer
- 1 0
0
dBm
XY129
Amplitude Characteristics
Immunity Testing
Radiated Immunity
When tested at 3 V/m according to IEC Sol-311984 the displayed average noise level
will be within specifications over the full immunity test frequency range of 27 to 500
MHz except that at immunity test frequencies of 278.6 MHz f selected resolution
bandwidth and 321.4 MHz f selected resolution bandwidth the displayed average
noise level may be up to -45 dBm. When the analyzer tuned frequency is identical to
the immunity test signal frequency there may be signals of up to -70 dBm displayed
on the screen.
Electrostatic
When an air discharge of up to 8 kV according to IEC Sol-211991 occurs to the shells
of the BNC connectors on the rear panel of the instrument spikes may be seen on the
CRT display. Discharges to center pins of any of the connectors may cause damage to
the associated circuitry.
Discharge
HP 85901 Spectrum Analyzer
Specifications and Characteristics
2-13
Option Characteristics
Tracking Generator Characteristics (Option 010 or 011)
Output Tracking
Drift (usable in 10 kHz bandwidth after
1 kHz/5 minutes
JO-minute warmup)
Spurious Outputs (>1.8 GHz to 4.0 GHz)
50 Q(Option 010)
0 dBm output
75 n (Option 011)
+ 42.8 dBmV, output
<-20 dBc
< -40 dBc
Harmonic
Nonharmonic
2121.4 MHz Feedthrough
<-45 dBm
(Option 010)
(Option 011)
< + 3.8 dBmV
RF Power-Off Residuals
100 kHz to 1.8 GHz (Option 010)
c-65 dBm
1 MHz to 1.8 GHz (Option 011)
c-16.2 dBmV
Dynamic Range (difference between maximum power out
and tracking generatot feedthrough)
100 kHz to 1.8 GHz (Option 010)
1 MHz to 1.8 GHz (Option 011)
2.14 Specifications and Characteristics
HP 95901 Spectrum Analyzer
Physical Characteristics
Physical Characteristics
Front-Panel Inputs and Outputs
INPUT 500
Connector
Type N female
Impedance
50 fI nominal
INPUT750 (Option 001)
Connector
BNC female
Impedance
75 0 nominal
Type N female
75 0 BNC female
Impedance
50 R nominal
(Option 010)
(Option 011)
75 0 nominal
Maximum Safe Reverse Level
+ 20 dBm (0.1 W), 25 Vdc
(Option 010)
fontion, 011 J
+ 69 dBmV (0.1 W), 100 Vdc
PROBE POWERS
+ 15 Vdc, f7% at 150 mA max.
Voltage/Current
-12.6 Vdc flO% at 150 mA max.
$ Total current drawn from the + 15 Vdc on the PROBE POWER and the AUX INTERFACE cannot exceed 150 mA.
Total current drawn from the - 12.5 Vdc on the PROBE POWER and the - 15 Vdc on the AUX INTERFACE cannot
exceed 150 mA.
Rear-Panel Inputs and Outputs
10 MHz REF OUTPUT
Connector
BNC female
Impedance
50 Q nominal
Outout Amolitude
>0 dBm
EXT REF IN
Connector
BNC female
Note: Analyzer noise sideband and spurious response performance may
be affected by the quality of the external reference used.
Input Amplitude Range
-2 to + 10 dBm
Frequency
10 MHz
HP 95901 Spectrum Analyzer
Specifications and Characteristics
2-15
Physical Characteristics
AUX IF OUTPUT
Frequency
21.4 MHz
Amplitude Range
-10 to -60 dBm
Impedance
50 fI nominal
AUX VIDEO OUTPUT
Connector
BNC female
Amplitude Range
0 to 1 V (uncorrected)
EXT ALC INPUT (Option 010 or 011)
Impedance
1 MD
Polarity
Positive or negative
Range
-66 dBV to + 6 dBV
Connector
Interface compatible with HP part number C1405B using
adapter C1405-60015 and most IBM/AT non-auto switching
kevboards.
EXT KEYBOARD (Option 041 or O&I)
EXT TRIG INPUT
Connector
BNC female
Trigger Level
Positive edge initiates sweep in EXT TRIG mode (TTL).
HI-SWEEP IN/OUT
Connector
BNC female
output
High = sweep, Low = retrace (TTL)
Input
Open collector, low stops sweep.
MONITOR OUTPUT (Spectrum Analyzer Display)
Connector
BNC female
Format
SYNC NRM
Internal Monitor
SYNC NTSC
NTSC Compatible
15.75 kHz horizontal rate
60 Hz vertical rate
SYNC PAL
PAL Compatible
15.625 kHz horizontal rate
50 Hz vertical rate
REMOTE INTERFACE
HP-IB and Parallel (Option 041)
HP -IB Codes
RS-232 and Parallel (Option 048)
2-16
Specifications and Characteristics
HP 10833A, B, C or D and 25 pin subminiature D-shell,
female for parallel
SHl, AHl, T6, SRl, RLl, PPO, DCl, Cl, C‘2, C3 and C28
9 pin subminiature D-shell, male for RS-232 and 25 pin
subminiature D-shell, female for parallel
HP 95901 Spectrum Analyzer
Physical Characteristics
SWEEP OUTPUT
Connector
BNC female
Amplitude
0 to + 10 V ramp
AIJX INTERFACE
:onnector Type: 9 Pin Subminiature “D”
>onnector Pinout
“Loeic” Mode
“Serial Bit” Mode
TTL Output Hi/Lo
TTL Output Hi/Lo
TTL Output Hi/Lo
TTL Output Hi/Lo
TTL Output Hi/Lo
Strobe
-
TTL Output Hi/Lo
Serial Data
Control I
-
TTL Input Hi/Lo
TTL Input Hi/Lo
6
Gnd
-
Gnd
Gnd
7t
-15 Vdc f7%
150 mA
8*
+ 5 Vdc f5%
150 mA
-
-
9t
+ 15 Vdc f5%
150 mA
-
-
Pin #
Function
1
Control A
2
Control B
3
Control C
4
Control D
5
Current
-
-
’ Exceeding the + 5 V current limits may result in loss of factory correction constants.
Total current drawn from the + 15 Vdc on the PROBE POWER and the AUX INTERFACE cannot exceed 150
nA. Total current drawn from the -12.6 Vdc on the PROBE POWER and the -15 Vdc on the AUX INTERFACE
:annot exceed 150 mA.
WEIGHT
Net
HP 8590L
15.2 kg (33.5 lb)
Shipping
HP 8590L
16.8 kg (37 lb)
HP 95901 Spectrum Analyzer
Specifications and Characteristics
2-17
Physical Characteristics
DIMENSIONS
4
3
3
1
5
2-l 8
=
=
=
=
=
8 in (200 mm)
7.25 in (184 mm)
14.69 in (373 mm)
12.8in(325mm)
18.12 in (460.5 mm)
Specifications and Characteristics
HP 85901 Spectrum Analyzer
Regulatory Information
Regulatory Information
The information on the following pages apply to the HP 859OL and the HP 8592L spectrum
analyzer products.
HP 85901 Spectrum Analyzer
Specifications and Characteristics
2-19
Regulatory Information
Declaration of Conformity
DECLARATION OF CONFORMITY
according to ISOAEC Guide 22 and EN 45014
Manufacturer’s Name:
Hewlett-Packard Co.
Manufacturer’s Address:
1212 Valleyhouse Drive
Rohnert Park, California 94928-4999
U.S.A.
Manufacturer’s Name:
Hewlett-Packard Ltd.
Manufacturer’s Address:
South Queesferry
West Lothian, EH30 9TG
Scotland, United Kingdom
Declares that the product:
Product Name:
Spectrum Analyzer
Model Numbers:
HP 85901, and HP 8592L
Product Options:
This declaration covers all options
of the above products.
Conforms to the following product specifications:
Safety:
IEC 348: 1978/HD 401: 1980
CAN/GSA-22.2 No. 231 Series M89
EMC:
CISPR 11:1990 /EN 55011:1991, Group 1 Class A
IEC 801-2:1991 /EN 50082-1:1992, 4 kV CD, 8 kV AD
IEC 801-3: 1984 /EN 50082-l: 1992, 3V/m, 27-500 MHz
IEC 801-4:1988 /EN 50082-1:1992, 500 V signal, 1000 V AC
iupplementary Information:
he product herewith complies with the requirements of the Low Voltage Directive
‘3/23/EEC and the EMC Directive 89/336/EEC.
Rohnert Park, California
/mixT~ /&&?J&zd
Location
Date
South Queensferry, Scotland
-&!=i/L $ 1994
Location
Date
Dixon Browder / Quality Manager
Peter Rigby / Q&
* Manager
Suropean Contact:
hour local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department
Q/Standards Europe, Herrenberger StraSe 130, D-7030 Bijblingen (FAX: + 49-703 1- 143143)
Z-20
Specifications and Characteristics
HP 85801 Spectrum Analyzer
Regulatory Information
Notice for Germany: Noise Declaration
LpA < 70 dB
am Arbeitsplatz (operator position)
normaler Betrieb (normal position)
nach DIN 45635 T. 19 (per IS0 7779)
HP 85901 Spectrum Analyzer
Specifications end Characteristics
2-21
3
If You Have a Problem
Your spectrum analyzer is built to provide dependable service. It is unlikely that you will
experience a problem. However, Hewlett-Packard’s worldwide sales and service organization is
ready to provide the support you need.
Calling HP Sales and Service Offices
Sales and service offices are located around the world to provide complete support for your
spectrum analyzer. To obtain servicing information or to order replacement parts, contact the
nearest Hewlett-Packard Sales and Service Office listed in ‘Ihble 3-l. In any correspondence or
telephone conversations, refer to the spectrum analyzer by its model number and full serial
number. With this information, the HP representative can quickly determine whether your unit
is still within its warranty period.
Before calling Hewlett-Packard
Before calling Hewlett-Packard or returning the spectrum analyzer for service, please make
the checks listed in “Check the basics.” If you still have a problem please read the warranty
printed at the front of this guide. If your spectrum analyzer is covered by a separate
maintenance agreement, please be familiar with its terms.
Hewlett-Packard offers several maintenance plans to service your spectrum analyzer after
warranty expiration. Call your HP Sales and Service Office for full details.
If you want to service the spectrum analyzer yourself after warranty expiration, contact your
HP Sales and Service Office to obtain the most current test and maintenance information.
HP 85901 Spectrum Analyzer
If You Have a Problem
3-1
Check the basics
In general, a problem can be caused by a hardware failure, a software error, or a user error.
Often problems may be solved by repeating what was being done when the problem occurred.
A few minutes spent in performing these simple checks may eliminate time spent waiting for
instrument repair.
q
Check that the spectrum analyzer is plugged into the proper ac power source.
q
Check that the line socket has power.
•I Check that the rear-panel voltage selector switch is set correctly.
q
Check that the line fuse is good.
q
Check that the spectrum analyzer is turned on.
q
Check that the light above m is on, indicating that the power supply is on.
q
Check that the other equipment, cables, and connectors are connected properly and
operating correctly.
q
Check the equipment settings in the procedure that was being used when the problem
occurred.
•I Check that the test being performed and the expected results are within the specifications
and capabilities of the spectrum analyzer. Refer to Chapter 2 of this guide.
q
q
q
3-2
Check the spectrum analyzer display for error messages. Refer to the HP 8590 E-Series and
L-Series Spectrum Analyzer User’s Guide.
Check operation by performing the verification procedures in Chapter 1 of this guide. Record
all results in the performance test record.
Check for problems similar to those described in the HP 8590 E-Sties and L-Series Spectrum
Analyzer User’s Guide.
If You Have a Problem
HP 85901 Spectrum Analyzer
‘Ihble 3-1. Hewlett-Packard Sales and Service Offices
US FIELD OPERATIONS
Headquarters
Hewlett-Packard Co.
19320 Pruneridge Avenue
Cupertino, CA 95014
(800) 752-0900
California, Northern
Hewlett-Packard Co.
301 E. Evelyn
Mountain View, CA 94041
(415) 694-2000
California, Southern
Hewlett-Packard Co.
1421 South Manhattan Ave.
Fullerton, CA 92631
(714) 999-6700
Colorado
Hewlett-Packard Co.
24 Inverness Place, East
Englewood, CO 80112
(303) 649-5512
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
(708) 255-9800
New Jersey
Hewlett-Packard Co.
150 Green Pond Rd.
Rockaway, NJ 07866
(201) 586-5400
Texas
Hewlett-Packard Co.
930 E. Campbell Rd.
Richardson, TX 75081
(214) 231-6101
EUROPEAN FIELD OPERATIONS
Headquarters
Hewlett-Packard S.A.
150, Route du Nant-d’Avri1
1217 Meyrin 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
61352 Bad Homburg v.d.H
Germany
(49 6172) 16-O
Great Britain
Hewlett-Packard Ltd.
Eskdale Road, Winnersh Triangle
Wokingham, Berkshire RG41 5DZ
England
(44 734) 696622
INTERCON FIELD OPERATIONS
Headquarters
Hewlett-Packard Company
3495 Deer Creek Road
Palo Alto, California, USA
94304-1316
(415) 857-5027
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
(514) 697-4232
China
China Hewlett-Packard Company
38 Bei San Huan Xl Road
ShuangYuShu
Hai Dian District
Beijing, China
(86 1) 256-6888
Japan
Hewlett-Packard Japan, Ltd.
l-27-15 Yabe, Sagamihara
Kanagawa 229, Japan
(81 427) 59-1311
Singapore
Hewlett-Packard Singapore (Pte.) Ltd.
150 Beach Road
#29-00 Gateway West
Singapore 07 18
(65) 291-9088
l&wan
Hewlett-Packard Taiwan
8th Floor, H-P Building
337 Fu Hsing North Road
Taipei, lbiwan
(886 2) 712-0404
HP 85901 Spectrum Analyzer
If You Have a Problem
3-3
Returning the Spectrum Analyzer for Service
Use the information in this section if it is necessary to return the spectrum analyzer to
Hewlett-Packard.
Package the spectrum analyzer for shipment
Use the following steps to package the spectrum analyzer for shipment to Hewlett-Packard for
service:
1. Fill in a service tag (available in the HP 8590 E-Series and L-Series Spectrum Analyzer
User’s Guide) and attach it to the instrument. Please be as specific as possible about the
nature of the problem. Send a copy of any or all of the following information:
Any error messages that appeared on the spectrum analyzer display.
w A completed Performance Test record. (Located in Chapter 1 of this guide.)
n Any other specific data on the performance of the spectrum analyzer.
n
Caution
Spectrum analyzer damage can result from using packaging materials other
than those specified. Never use styrene pellets in any shape as packaging
materials. They do not adequately cushion the instrument or prevent it from
shifting in the carton. Styrene pellets cause equipment damage by generating
static electricity and by lodging in the spectrum analyzer fan.
2. Use the original packaging materials or a strong shipping container that is made of
double-walled, corrugated cardboard with 159 kg (350 lb) bursting strength. The carton
must be both large enough and strong enough to accommodate the spectrum analyzer and
allow at least 3 to 4 inches on all sides of the spectrum analyzer for packing material.
3. If you have a front-panel cover, install it on the instrument; if not, protect the front panel
with cardboard.
4. Surround the instrument with at least 3 to 4 inches of packing material, or enough to
prevent the instrument from moving in the carton. If packing foam is not available, the
best alternative is SD-240 Air CapTM from Sealed Air Corporation (Commerce, CA 90001).
Air Cap looks like a plastic sheet covered with l-1/4 inch air-filled bubbles. Use the pink Air
Cap to reduce static electricity. Wrap the instrument several times in the material to both
protect the instrument and prevent it from moving in the carton.
5. Seal the shipping container securely with strong nylon adhesive tape.
6. Mark the shipping container “FRAGILE, HANDLE WITH CARE” to ensure careful handling.
7. Retain copies of all shipping papers.
3-4
If You Have a Problem
HP 95901 Spectrum Analyzer
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