Agilent Technologies 11974 Series User manual

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User’s Guide
11974 Series Preselected Millimeter Mixers
Manufacturing Part Number: 11974-90012
Supersedes 11974-90010
Printed in USA
October 2003
© Copyright 1992, 1999, 2001, 2002, 2003 Agilent Technologies, Inc.

2
Notice
The information contained in this document is subject to change without notice.
Agilent Technologies 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. Agilent Technologies 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.
Certification
Agilent Technologies certifies that this product met its published specifications at the time
of shipment from the factory. Agilent Technologies further certifies that its calibration
measurements are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institute’s calibration facility, and to the
calibration facilities of other International Standards Organization members.
Warranty
This Agilent Technologies instrument product is warranted against defects in material and
workmanship for a period of one year from date of shipment. During the warranty period,
Agilent Technologies 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 Agilent Technologies. Buyer shall prepay shipping charges to Agilent
Technologies and Agilent Technologies shall pay shipping charges to return the product to
Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products
returned to Agilent Technologies from another country.
Agilent Technologies warrants that its software and firmware designated by Agilent
Technologies for use with an instrument will execute its programming instructions when
properly installed on that instrument. Agilent Technologies does not warrant that the
operation of the instrument, or software, or firmware will be uninterrupted or error-free.

3
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. AGILENT TECHNOLOGIES
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. AGILENT TECHNOLOGIES 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 Agilent Technologies products.
For any assistance, contact your nearest Agilent Technologies Sales and Service Office
listed on page 42.
This guide uses the following conventions:
Instrument Key This represents a key physically located on the instrument, or a key with a
label that is determined by the instrument firmware.
Screen Text This indicates text displayed on the spectrum analyzer screen.

4

Contents
5
1. General Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
What You’ll Find in this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
11974 Series Preselected Millimeter Mixers Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Options Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Serial Numbers Covered by This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Calibration Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Specifications and Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2. Installation
What You’ll Find in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Spectrum Analyzer Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Preparing the 11974 for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Setting the Line-Voltage Selector Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Checking the Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Using a Conversion-Loss Data Disk with the ESA or PSA Series Analyzers . . . . . . . . . . . 38
Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Reducing ESD Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Static-Safe Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Returning Equipment for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3. Operation
What You’ll Learn in this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
11974Q Front-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11974Q Rear-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11974-60028 Front-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Operating Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Maximum RF Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Maximum LO Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Operating Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Preventing Erroneous Preselector Peaking or Centering During Spur Searches . . . . . . . 54
Remote Location of an 11974 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
RF Port Voltage Standing Wave Ratio (VSWR) Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Dynamic Range Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Using an 8566B Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
General Descriptions of 8566B External-Mixing Functions . . . . . . . . . . . . . . . . . . . . . . . . 62
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

6
Contents
General Descriptions of 71000 Series Spectrum Analyzer External-Mixing Functions . . .67
Conversion Loss Versus Frequency Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers . . . . . . . . . . . . . . . .71
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
General Description of External-Mixing Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Using an E4407B Spectrum Analyzer
or 7405A EMC Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Using a PSA Series Spectrum Analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Using 8561A/62A/62B Spectrum Analyzers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
General Description of 8561A/62A/62B External-Mixing Functions . . . . . . . . . . . . . . . . . .94
4. Performance Tests
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Test Record Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Performance Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Frequency Tracking Calibration with an 8566B Spectrum Analyzer . . . . . . . . . . . . . . . . . .107
1. Conversion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
2. Image Rejection Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
3. Multiple Response Rejection Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
4. Displayed Average Noise Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
5. 3 dB Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
5. Safety and Regulatory Information
Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
General Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

7
General Information
1General Information

8Chapter1
General Information
Introduction
General Information
Introduction
The 11974 Series Preselected Millimeter Mixers Installation, Verification, and Operation
Manual describes how to configure an 11974 in a system, what to do to verify its
performance, and how to operate an 11974.
This manual contains the following chapters:
•Chapter 1, “General Information,”provides a quick overview of the 11974 Series
Preselected Millimeter Mixer and all operating specifications and characteristics tables.
•Chapter 2, “Installation,”describes power requirements, spectrum-analyzer
compatibility, installation requirements, packaging information, and the Agilent
Technologies Sales and Service Office listing.
•Chapter 3 , “Operation,”describes operating precautions, operating hints, and complete
operating procedures with the most commonly-used spectrum analyzers.
•Chapter 4, “Performance Tests,”provides the tests to verify the electrical performance
of the 11974 Series mixers.
•Chapter 5, “Safety and Regulatory Information,”provides safety warnings and cautions,
explanations of the various symbols appearing on the instrument, regulatory
compliance information.

Chapter 1 9
General Information
What You’ll Find in this Chapter
General Information
What You’ll Find in this Chapter
This chapter introduces you to the 11974 Series Preselected Millimeter Mixers and
provides other general information regarding the 11974 Series. This chapter contains the
following topics:
•“11974 Series Preselected Millimeter Mixers Overview”on page 10.
•“Accessories Supplied”on page 11.
•“Specifications and Characteristics”on page 14.
•“Calibration Cycle”on page 13.

10 Chapter1
General Information
11974 Series Preselected Millimeter Mixers Overview
General Information
11974 Series Preselected Millimeter Mixers Overview
The 11974 Series Preselected Millimeter Mixers are preselected RF front-end sections
used to extend the frequency range of the Agilent Technologies high performance,portable,
and modular spectrum analyzers. The 11974 Series are fully calibrated, system
compatible, and cover a frequency range from 26.5 to 75 GHz in four waveguide bands —
A, Q, U, and V. Control of the 11974 is provided by the host spectrum analyzer's sweep
ramp and first local-oscillator output. The 11974 is packaged as an external module with
flexible cables to the spectrum analyzer in order to facilitate connection to the waveguide
device under test.
The tracking preselector of the 11974, based on barium hexa-ferrite technology, eliminates
the image and multiple harmonic responses that clutter the spectrum display. The
tracking preselector in front of the harmonic mixer eliminates the need for the
time-consuming process of signal identification.
A stand-alone power supply provides the tuning current for the filter. The included
accessory kit contains the cables and tools necessary to make connections to the host
spectrum analyzer.
Figure 1-1 11974 Series with a Power Supply

Chapter 1 11
General Information
11974 Series Preselected Millimeter Mixers Overview
General Information
Options Available
Accessories Supplied
The following is a list of all accessories, and their part numbers, supplied at shipment.
Other related accessories available from Agilent Technologies are:
Input Isolator
(Option 001) This option provides an 11974 Series Preselected Millimeter Mixer that has been calibrated with an isolator attached to the RF input. The addition of
the isolator improves input match, reducing measurement uncertainties
and protects the device under test (DUT) from off-resonant reflections from
the input tracking filter.
Accessory Description Part Number
Ball Driver, 3/32 inch 8710-1539
Wrench, 5/16 inch 8710-0510
Alignment Tool 8710-0630
Four Standard #4-40 Screws for A band 3030-0221
Captive Screws for Q, U, and V bands, 4 each 1390-0671
3 Cables with SMA (m) Connectors (1.0 m) 5061-5458
1 Cable with BNC (m) Connectors (24 inches) 8120-1839
1 Cable with BNC (m) Connectors (48 inches) 8120-2582
1 Adapter with BNC (f) Connectors 1250-0080
1 Stand for the 11974 83556-60010
1 Conversion-Loss Data Disk Custom for each
mixer
Accessory Description Part Number
Waveguide with 2.4 mm coax adapters 281C
Attenuators for R, Q, and U bands only 382A
20/50 dB Fixed Attenuators 373D/G
3 dB, 6 dB, and 10 dB Fixed Attenuators for Q and U bands only 370A/B/C
Waveguide bends, twists, and straight sections 800 Series
Waveguide isolators for R, Q, U, and V bands 365A Series
Rack mounting flange for power supply 5062-3957

12 Chapter1
General Information
Serial Numbers Covered by This Manual
General Information
Serial Numbers Covered by This Manual
This manual applies to 11974 Series Preselected Millimeter Mixers with the serial number
prefixes 3001A and above.
Agilent Technologies makes frequent improvements to its products to enhance their
performance, usability, or reliability. Agilent Technologies service personnel have access to
complete records of design changes to each type of equipment, based on the equipment’s
serial number. Whenever you contact Agilent Technologies about your 11974, have the
complete serial number available to ensure that you are obtaining the most complete and
accurate information possible.
The serial number label is attached to the rear of the 11974. The serial number has two
parts: the prefix (the first four numbers and a letter), and the suffix (the last five
numbers). See Figure 1-2.
The first four numbers of the prefix are a code identifying the date of the last major design
change incorporated in your unit. The letter identifies the country in which the unit was
manufactured. The five-digit suffix is a sequential number and is different for each unit.
Whenever you list the serial number or refer to it in obtaining information about your
11974, be sure to use the complete number, including the full prefix and the suffix.
Figure 1-2 Typical Serial Number Label

Chapter 1 13
General Information
Calibration Cycle
General Information
Calibration Cycle
Use the performance tests in Chapter 4 every 12 months to check the unit against the
specifications listed in Table 1-1 on page 15.

14 Chapter1
General Information
Specifications and Characteristics
General Information
Specifications and Characteristics
Table 1-1 lists the specifications for the 11974 Series Preselected Millimeter Mixers.
Unless stated otherwise, all specifications describe the warranted performance of the
11974 under the following conditions:
•Five minute warm-up for ambient conditions.
•Ambient temperature 0°C to 55°C.
•One year calibration cycle.
•Environmental requirements met.
•Connections to the host spectrum analyzer are made with one length of coax cable, part
number 5061-5458.
•The 11974 is used with the following spectrum analyzers:
❏E4440A, E4446A, E4448A PSA Series with Option AYZ installed.
❏E4407A with Option AYZ installed.
❏8560 Series.
❏71000C with 70907B External Mixer Interface Module.
❏8566B with 11975A Amplifier.
Characteristics provide useful, but nonwarranted, information in the form of typical,
nominal, or approximate values for band performance. Refer to Table 1-2 on page 19 for a
list of band characteristics.

Chapter 1 15
General Information
Specifications and Characteristics
General Information
Table 1-1 11974 Specifications
FREQUENCY
Frequency Range
(LO Harmonic Number)
11974A (n= 8)
11974Q (n= 10)
11974U (n= 10)
11974V (n= 14)
26.5 GHz
33 GHz
40 GHz
50 GHz
to
to
to
to
40 GHz
50 GHz
60 GHz
75 GHz
RF Preselector Bandwidth (3 dB points)
11974A
11974Q
11974U
11974V
Typical
130 MHz
150 MHz
150 MHz
200 MHz
Min.
80 MHz
100 MHz
100 MHz
100 MHz
AMPLITUDE MEASUREMENT RANGE
Displayed Average Noise Level
Host Spectrum Analyzers: 8566B/11975A,
71000C/70907B, PSA Series E4440A
(RBW = 10 Hz)
11974A
11974Q
11974U
11974V
Option 001
11974A
11974Q
11974U
11974V
Host Spectrum Analyzers: 8560 Series Portable
Spectrum Analyzers
(RBW = 300 Hz)
11974A
11974Q
11974U
11974V
Option 001
11974A
11974Q
11974U
11974V
−111 dBm max.
−106 dBm max.
−109 dBm max.
−100 dBm max.
−109 dBm max.
−104 dBm max.
−107 dBm max.
−97 dBm max.
−96 dBm max.
−91 dBm max.
−94 dBm max.
−85 dBm max.
−94 dBm max.
−89 dBm max.
−92 dBm max.
−82 dBm max.

16 Chapter1
General Information
Specifications and Characteristics
General Information
Conversion Loss
RF to IF port
(includes 1 m IF cable, part number 5061-5458)
11974A
11974Q
11974U
11974V
44 dB max.
46 dB max.
43 dB max.
57 dB max.
RF Input Match (across full waveguide band)
Option 001 only
11974A, Q, U
11974V <1.6:1 <2.3:1
Conversion Loss Chart Accuracy
20°C to 30°C: RSS of calibration equipment errors
(Add 0.7 dB if used with 8560 Series Portable
Spectrum Analyzers.)
0°C to 55°C: RSS of calibration equipment errors
plus worst-case temperature effects of 11974 (Add
0.7 dB if used with 8560 Series Portable Spectrum
Analyzers.)
11974A
11974Q
11974U
11974V
0°C to 55°C
±2.3 dB max.
±2.3 dB max.
±2.6 dB max.
±4.5 dB max.
20°C to 30°C
±1.0 dB max.
±1.0 dB max.
±1.1 dB max.
±2.0 dB max.
Image Rejection
(Image positioned 2x fIF above tuned response)
Host Spectrum Analyzers: 8566B/11975A,
71000C/70907B, PSA Series E4440A
11974A
11974Q
11974U
11974V (50 to 67 GHz)
11974V (67 to 75 GHz)
Host Spectrum Analyzers: 8560 Series Portable
Spectrum Analyzers
11974A
11974Q
11974U
11974V (50 to 67 GHz)
11974V (67 to 75 GHz)
0°C to 55°C
−54 dBc max.
−50 dBc max.
−50 dBc max.
−50 dBc max.
−40 dBc max.
−50 dBc max.
−45 dBc max.
−45 dBc max.
−45 dBc max.
−35 dBc max.
20°C to 30°C
−59 dBc max.
−55 dBc max.
−55 dBc max.
−55 dBc max.
−45 dBc max.
−55 dBc max.
−50 dBc max.
−50 dBc max.
−50 dBc max.
−40 dBc max.
Table 1-1 11974 Specifications (Continued)

Chapter 1 17
General Information
Specifications and Characteristics
General Information
Multiple Response a
(Due to in-range applied signals mixing with LO
harmonics other than order N)
11974A (N= 8)
11974Q (N= 10)
11974U (N= 10)
11974V (N= 14) (applied signal: 50 to 67 GHz)
11974V (N= 14) (applied signal: 67 to 75 GHz)
−63 dBc max.
−60 dBc max.
−60 dBc max.
−60 dBc max.
−55 dBc max.
a. Multiple response displayed frequency, f ′RF, due to input signal fRF.
where:
N = Band Harmonic number
N′ = Unwanted Harmonic
= …N−2, N−1, N+1, N+2,…
fIF = 321.4 MHz for 8566B and 71000C Spectrum Analyzers
= 310.7 MHz for 8560 Series Portable Spectrum Analyzers
Table 1-1 11974 Specifications (Continued)
f′RF N
N′
------


fRF fIF
+= N′N±
N′
--------------



18 Chapter1
General Information
Specifications and Characteristics
General Information
GENERAL SPECIFICATIONS
Environmental Specifications Type tested to MIL-T-28800C, Class 5
environmental conditions as listed below:
Temperature
Non-operating
Operating
Relative Humidity
Altitude
Non-operating
Operating
Maximum Vibration Level
5 Hz to 55 Hz
Maximum Shock
−40°C to +75°C
0°C to +55°C
95% ±5% up to +30°C
<12,195 m (<40,000 feet)
<3,048 m (<10,000 feet)
2 g
30 g
Electromagnetic Compatibility Meets radiated and conducted emissions
of MIL-STD-461B, Part 7, methods CE03
(Air Force) and RE02, FTZ 26/527/79
Table 1-1 11974 Specifications (Continued)

Chapter 1 19
General Information
Specifications and Characteristics
General Information
Table 1-2 11974 Characteristics
Note: These are not specifications. Characteristics provide useful, but nonwarranted
information about instrument performance.
FREQUENCY
Center Frequency Accuracy
Residual FM
Span Accuracy
Using Table 1-1, “11974 Specifications,”for the
spectrum analyzer being used, evaluate these
characteristics with reference to the harmonic
numbers listed below.
11974A (n= 8)
11974Q (n= 10)
11974U (n= 10)
11974V (n= 14)
26.5 GHz to 40 GHz
33 GHz to 50 GHz
40 GHz to 60 GHz
50 GHz to 75 GHz
AMPLITUDE MEASUREMENT RANGE
Frequency Response (uncorrected)
(With respect to mean value of
Conversion Loss chart)
11974A
11974Q
11974U
11974V
±4.5 dB max.
±4.0 dB max.
±4.0 dB max.
±4.0 dB max.
1 dB Gain Compression
(RF Input for 1 dB increase in conversion
loss)
11974A
11974Q
11974U
11974V
+6 dBm min.
0dBmmin.
0dBmmin.
+3 dBm min.
Third Order Intercept (TOI)
(For two signals spaced less than 200 MHz
apart)
11974A
11974Q
11974U
11974V
+13 dBm min.
+13 dBm min.
+13 dBm min.
+13 dBm min.