Agilent Technologies HP 70910A User`s guide

Agilent Technologies HP 70910A User`s guide
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.
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.
2
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.
3
4
Contents
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spectrum Analyzer Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing the 11974 for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Line-Voltage Selector Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using a Conversion-Loss Data Disk with the ESA or PSA Series Analyzers . . . . . . . . . . .
Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reducing ESD Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Static-Safe Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Returning Equipment for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Operation
What You’ll Learn in this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11974Q Front-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11974Q Rear-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11974-60028 Front-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum RF Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum LO Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing Erroneous Preselector Peaking or Centering During Spur Searches . . . . . . .
Remote Location of an 11974 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Port Voltage Standing Wave Ratio (VSWR) Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dynamic Range Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using an 8566B Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Descriptions of 8566B External-Mixing Functions . . . . . . . . . . . . . . . . . . . . . . . .
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preliminary Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
29
31
32
33
33
34
35
38
39
40
41
42
44
48
50
51
52
53
53
53
53
54
54
55
57
57
58
58
61
62
63
63
66
5
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
6
General Information
1 General Information
7
General Information
General Information
Introduction
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.
8
Chapter 1
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.
Chapter 1
9
General Information
General Information
What You’ll Find in this Chapter
General Information
General Information
11974 Series Preselected Millimeter Mixers Overview
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
10
Chapter 1
Options Available
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.
Accessories Supplied
The following is a list of all accessories, and their part numbers, supplied at shipment.
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
Other related accessories available from Agilent Technologies are:
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
Chapter 1
11
General Information
General Information
11974 Series Preselected Millimeter Mixers Overview
General Information
General Information
Serial Numbers Covered by This Manual
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
12
Chapter 1
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.
Chapter 1
13
General Information
General Information
Calibration Cycle
General Information
General Information
Specifications and Characteristics
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.
14
Chapter 1
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
Min.
130 MHz
150 MHz
150 MHz
200 MHz
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)
−111 dBm max.
−106 dBm max.
−109 dBm max.
−100 dBm max.
11974A
11974Q
11974U
11974V
Option 001
−109 dBm max.
−104 dBm max.
−107 dBm max.
−97 dBm max.
11974A
11974Q
11974U
11974V
Host Spectrum Analyzers: 8560 Series Portable
Spectrum Analyzers
(RBW = 300 Hz)
−96 dBm max.
−91 dBm max.
−94 dBm max.
−85 dBm max.
11974A
11974Q
11974U
11974V
Option 001
−94 dBm max.
−89 dBm max.
−92 dBm max.
−82 dBm max.
11974A
11974Q
11974U
11974V
Chapter 1
15
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
Table 1-1 11974 Specifications (Continued)
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
20°C to 30°C
±2.3 dB max.
±2.3 dB max.
±2.6 dB max.
±4.5 dB max.
±1.0 dB max.
±1.0 dB max.
±1.1 dB max.
±2.0 dB max.
0°C to 55°C
20°C to 30°C
−54 dBc max.
−50 dBc max.
−50 dBc max.
−50 dBc max.
−40 dBc max.
−59 dBc max.
−55 dBc max.
−55 dBc max.
−55 dBc max.
−45 dBc max.
−50 dBc max.
−45 dBc max.
−45 dBc max.
−45 dBc max.
−35 dBc max.
−55 dBc max.
−50 dBc max.
−50 dBc max.
−50 dBc max.
−40 dBc 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)
16
Chapter 1
Table 1-1 11974 Specifications (Continued)
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 f RF.
N′ ± N
N
f′ RF =  ------ f RF + f IF  --------------
 N′ 
 N′
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
Chapter 1
17
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
Table 1-1 11974 Specifications (Continued)
GENERAL SPECIFICATIONS
Environmental Specifications
Type tested to MIL-T-28800C, Class 5
environmental conditions as listed below:
Temperature
Non-operating
Operating
−40°C to +75°C
0°C to +55°C
Relative Humidity
95% ±5% up to +30°C
Altitude
Non-operating
Operating
<12,195 m (<40,000 feet)
<3,048 m (<10,000 feet)
Maximum Vibration Level
5 Hz to 55 Hz
2g
Maximum Shock
30 g
Electromagnetic Compatibility
18
Meets radiated and conducted emissions
of MIL-STD-461B, Part 7, methods CE03
(Air Force) and RE02, FTZ 26/527/79
Chapter 1
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
Using Table 1-1, “11974 Specifications,” for the
spectrum analyzer being used, evaluate these
characteristics with reference to the harmonic
numbers listed below.
Span Accuracy
11974A (n = 8)
26.5 GHz to 40 GHz
11974Q (n = 10)
33 GHz to 50 GHz
11974U (n = 10)
40 GHz to 60 GHz
11974V (n = 14)
50 GHz to 75 GHz
AMPLITUDE MEASUREMENT RANGE
Frequency Response (uncorrected)
(With respect to mean value of
Conversion Loss chart)
±4.5 dB max.
±4.0 dB max.
±4.0 dB max.
±4.0 dB max.
11974A
11974Q
11974U
11974V
1 dB Gain Compression
(RF Input for 1 dB increase in conversion
loss)
11974A
11974Q
11974U
11974V
+6 dBm min.
0 dBm min.
0 dBm min.
+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.
Chapter 1
19
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
Table 1-2 11974 Characteristics (Continued)
AMPLITUDE MEASUREMENT RANGE (continued)
IF Subharmonic Response
Intercept (2nd Order)
(Response at fIF/2 above input signal)
fIF/2 = 160.7 MHz (8566B, 71000C,
PSA Series)
= 155.35 MHz (8560 Series
Portable Spectrum
Analyzer)
11974A
11974Q
11974U
11974V
+45 dBm min.
+45 dBm min.
+45 dBm min.
+30 dBm min.
Dynamic Range
Refer to Figure 1-3 on page 23, Figure 1-4 on page 24, Figure 1-5 on page 25, and
Figure 1-6 on page 26.
INPUTS AND OUTPUTS
RF Input
Waveguide Size, Flange Type
Size
11974A
11974Q
11974U
11974V
WR-28
WR-22
WR-19
WR-15
Maximum RF Input Level
(CW, Peak, or Average)
Flange
UG 599/U
UG 383/U
UG 383/U-M
UG 385/U
+25 dBm
<3.0:1
Match (at peak of preselector)
LO Input
Connector Type
SMA (f)
Frequency Range
11974A
11974Q
11974U
11974V
3.3 GHz to 5.0 GHz
3.3 GHz to 5.0 GHz
4.0 GHz to 6.0 GHz
3.5 GHz to 5.3 GHz
Optimal LO Input Level
+14.5 dBm to 16 dBm
Match
<2.0:1 (50Ω)
20
Chapter 1
Table 1-2 11974 Characteristics (Continued)
INPUTS AND OUTPUTS (continued)
IF Output
Connector Type
SMA (f)
Match
<1.6:1 (50Ω)
Bandwidth
Nominal >100 MHz
Typical >150 MHz
(Total 11974 BW limited by preselector.)
Tune + Span Input
Connector Type
BNC (f)
Sensitivity (Spectrum Analyzer Type)
(PSEL PK DAC at mid-value)
8566B/11975A
8560 Series Portable Spectrum
Analyzer
71000/70907B, E4407B, PSA Series
Input Impedance
−2 V/GHz × fLO − 0.32 V
+1.5 V/GHz × fLO − 0.21 V
+1.5 V/GHz × fLO V
20 kΩ min.
Power Supply (11974-60028)
Output
+50 V, 0.6 A
±15 V, 0.2 A
Input
100/110/220/240 V ac
47 Hz to 63 Hz
Power Consumption
130 VA max.
Chapter 1
21
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
GENERAL CHARACTERISTICS
Weight
11974 Series
14.3 kg (6.5 lb)
11974-60028 Preselector Power Supply
26.2 kg (11.9 lb)
Length (A) × Width (B) × Height (C)
Size
11974 Series
210.2 mm × 84.7 mm × 101.5 mm
11974-60028 Preselector Power Supply
346.1 mm × 212.7 mm × 133.4 mm
22
Chapter 1
Figure 1-3 11974A Minimum System Dynamic Range
Chapter 1
23
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
Figure 1-4 11974Q Minimum System Dynamic Range
24
Chapter 1
Figure 1-5 11974U Minimum System Dynamic Range
Chapter 1
25
General Information
General Information
Specifications and Characteristics
General Information
General Information
Specifications and Characteristics
Figure 1-6 11974V Minimum System Dynamic Range
26
Chapter 1
Installation
2 Installation
27
Installation
What You’ll Find in This Chapter
What You’ll Find in This Chapter
This chapter describes how to set up an 11974 Series Preselected Millimeter Mixer for
operation. This chapter contains the following topics.
“Spectrum Analyzer Compatibility” on page 29
“Initial Inspection” on page 31
“Preparing the 11974 for Use” on page 32
“Power Requirements” on page 33
Installation
“Setting the Line-Voltage Selector Switch” on page 33
“Using a Conversion-Loss Data Disk with the ESA or PSA Series Analyzers” on
page 38
“Electrostatic Discharge Information” on page 39
“Returning Equipment for Service” on page 42
28
Chapter 2
Installation
Spectrum Analyzer Compatibility
Spectrum Analyzer Compatibility
The 11974 Series mixers are compatible with the spectrum analyzers listed in the
following table.
Table 2-1. 11974 Compatibility with Spectrum Analyzers
71000 MODULAR SPECTRUM ANALYZER WITH
70907 EXTERNAL MIXER INTERFACE MODULE
S/N Prefix
Compatibility
70907A
all
70907-K74 Upgrade Kit required (1) (2)
70907B
all
Fully compatible (3)
Installation
Model
8560 SERIES PORTABLE SPECTRUM ANALYZER
Model
S/N Prefix
Compatibility
8560A
<3003A
8560A-K74 Upgrade Kit required (4)
(cannot be used with option 002)
8560A
≥3003A
Fully compatible with non-option 002
8560E/EC
all
Fully compatible with non-option 002
8561A
all
8561A-K74 Upgrade Kit required (1) (5)
8561B
<3003A
8561B-K74 Upgrade Kit required (4)
8561B
≥3003A
Fully compatible
8561E/EC
all
Fully compatible
8562A/B
all
8562A-K74 Upgrade Kit required (1) (5)
8562E
all
Fully compatible
8563A/E/EC
all
Fully compatible
8564E/EC
all
Fully compatible
8565E/EC
all
Fully compatible
ESA SERIES SPECTRUM ANALYZER
Model
S/N Prefix
E4407BA
all
Option AYZ required
E7405A
all
Option AYZ required
Chapter 2
Compatibility
29
Installation
Spectrum Analyzer Compatibility
Table 2-1. 11974 Compatibility with Spectrum Analyzers
PSA SERIES SPECTRUM ANALYZER
Note: E4443A and E4445A do not support external mixing.
Model
S/N Prefix
Compatibility
E4440A
all
Option AYZ required
E4446A
all
Option AYZ required
E4448A
all
Option AYZ required
R&D BENCH HIGH PERFORMANCE SPECTRUM ANALYZER
Installation
WITH 11975A LO AMPLIFIER
Model
S/N Prefix
Compatibility
8566A
<2007A (6)
External mixing is not available
8566A
≥2007A (6)
Only compatible if the 8566A to 8566B Conversion Kit and either
K74 or K75 upgrade kit are previously installed
NOTE
The 8566A to 8566B Conversion, 8566B-K74, and
8566B-K75 upgrade kits for these analyzers are no
longer available.
8566B
<2948A (6)
Only compatible if the 8566B-K74 upgrade kit is previously
installed.
8566B
≥2948A (6)
Fully compatible
(1)
Retrofit kit contains materials and instructions for hardware modifications and an operating procedure update for the
11974.
(2)
Mixer bias capability is converted to preselector peak, resulting in activation of a preselector peaking with the BIAS
PEAK function. Sweep times must be manually controlled in wide spans to avoid over sweeping the preselector.
(3)
70900 Local Oscillator firmware/hardware requirements:
Firmware Date Code
(YYMMDD)
LO Upgrade Kit Required
850730
70907B-Option 098
860203
(Firmware and CPU board)
861015
70907B-Option 099
870501
(Firmware on RAM/ROM card)
880314
880901
890606
Fully compatible, no kit required
(4)
Retrofit kit contains firmware update and new operation manual.
(5)
Operation with 11974s will require entry of a frequency offset. Preselector peaking is performed manually with a
screwdriver adjustment. Sweep times must be manually controlled in wide spans to avoid over sweeping the
preselector.
(6)
The serial number prefix on the 8566A/B refers to the RF section.
30
Chapter 2
Installation
Initial Inspection
Initial Inspection
Inspect the shipping container upon receipt. Retain it and the cushioning materials. If the
container or cushioning material is damaged, verify that the contents are complete and
that the unit functions correctly both mechanically and electrically.
If the contents are incomplete or the 11974 fails the performance tests in Chapter 4,
“Performance Tests,” on page 97, notify one of the Agilent Technologies Sales and Service
Offices listed on page 45. Show any container or cushioning materials damages to the
carrier. The Agilent Technologies Sales and Service Office will arrange for repair or
replacement without waiting for a claim settlement.
WARNING
To prevent electrical shock, disconnect the 11974 Series equipment
from mains before cleaning. Use a dry cloth or one slightly dampened
with water to clean the external case parts. Do not attempt to clean
internally.
Chapter 2
31
Installation
The shipping container and cushioning materials are shown in Figure 2-3 on page 43 and
Figure 2-4 on page 44. Instructions for repackaging the 11974 are included under
“Returning Equipment for Service” on page 42.
Installation
Preparing the 11974 for Use
Preparing the 11974 for Use
When installing equipment, ensure that the 11974-60028 Power Supply ac power switch
and the power cord are easily accessible to allow for disconnecting the equipment from the
mains power supply. The power switch will remove power from the 11974, but the power
must be disconnected to remove the 11974-60028 from the mains power supply.
Installation
Position the equipment to protect it from moisture because the instrument case does not
protect against the ingress of water.
WARNING
The front panel LINE switch disconnects the mains circuits from the
mains supply after the EMC filters and before other parts of the
instrument.
CAUTION
Ventilation Requirements: When installing the product in a cabinet, the
air flow into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4 °C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
The 11974 must be properly connected to one of the compatible spectrum analyzers listed
in Table 2-1. on page 29. Use the next four sections of this chapter to:
• Select the appropriate power source.
• Set the line-voltage selector switch correctly.
• Check the fuse.
• Select the appropriate power cable.
After preparing the 11974 for use, refer to Chapter 3 , for complete operation procedures
for the most commonly-used compatible spectrum analyzers. These procedures include
configuration setups listing all connections and giving step-by-step procedures describing
how to operate an 11974.
CAUTION
Before this instrument is switched on, make sure that:
•the line voltage selector is set to the voltage of the mains supply;
•the correct fuse is installed;
•the supply voltage is in the specified range.
32
Chapter 2
Installation
Preparing the 11974 for Use
Power Requirements
The power requirements for the 11974 are listed below.
Table 2-2 Operating Power Requirements
Line Input
Power Requirements
100/120 V ac Operation
220/240 V ac Operation
Line Voltage
100 V to 120 V, ±10%
220 V to 240 V, ±10%
Line Current
1 A rms max.
0.5 A rms max.
Line Frequency
47 Hz to 66 Hz
47 Hz to 66 Hz
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.
Setting the Line-Voltage Selector Switch
The 11974-60028 Preselector Power Supply contains the voltage-selector switch for the
11974. Set the power supply’s rear-panel voltage-selector switch to the line-voltage range
(100, 120, 220, or 240 V) corresponding to the available ac voltage. Refer to Figure 2-1 on
page 34.
Chapter 2
33
Installation
WARNING
Installation
Preparing the 11974 for Use
Installation
Figure 2-1 Voltage Selection Switch and Line Fuse Locations
Checking the Fuse
The type of ac-line input fuse depends on the input-line voltage. Use the following fuses:
100 V to 120 V Operation:
1 A 250 V UL/CSA (TIME DELAY) (part number 2110-0674) (for
use in the United States)
220 V to 240 V Operation:
0.5 A 250 V IEC (TIME DELAY) (part number 2110-0458)
(for use in other countries)
The line fuse is housed in a small container located inside the rear-panel power-connector
module of the 11974-60028 Preselector Power Supply. When replacing a fuse, be sure that
the arrows on the container match the direction of the arrows on the power-connector door.
Refer to Figure 2-1 on page 34.
34
Chapter 2
Installation
Preparing the 11974 for Use
Power Cable
The 11974-60028 Preselector Power Supply is equipped with a three-wire power cable, in
accordance with international safety standards. When connected to an appropriate
power-source outlet, this cable grounds the instrument cabinet.
WARNING
Various power cables are available to connect the power supply to the types of ac power
outlets unique to specific geographic areas. The cable appropriate for the area to which the
power supply is originally shipped is included with the unit. You can order additional ac
power cables for use in different areas. The following table lists the available ac power
cables, illustrates the plug configurations, and identifies the geographic area in which each
cable is appropriate.
Chapter 2
35
Installation
Failure to ground the instrument properly can result in personal
injury. Before turning on the preselector power supply, you must
connect its protective earth terminals to the protective conductor of
the main power cable. Insert the main power-cable plug only into a
socket outlet that has a protective earth contact. Do not defeat the
earth-grounding protection by using an extension cable, power
cable, or auto transformer. Make sure its common terminal is
connected to the protective earth contact of the power source socket.
Installation
Preparing the 11974 for Use
Table 2-3. Power Cables
Plug Type
a
Cable
Part
Number
Plug b
Description
Length
cm (in.)
Straight
BS 1363A
229 (90)
8120-8709
90°
229 (90)
Mint
Gray
8120-1369
Straight
AS 3112
210 (79)
Gray
8120-0696
90°
200 (78)
Gray
8120-1378
Straight
NEMA 5-15P
203 (80)
Jade
Gray
8120-1521
90°
203 (80)
Jade
Gray
8120-4753
Straight
NEMA 5-15P
229 (90)
Gray
8120-4754
90°
229 (90)
Gray
8120-1689
Straight
CEE 7/VII
200 (78)
Mint
Gray
8120-1692
90°
200 (78)
Mint
Gray
8120-2104
Straight
SEV Type 12
200 (78)
Gray
90°
200 (78)
Installation
8120-8705
8120-2296
36
Cable
Color
Mint
Gray
For Use in Country
Option 900
United Kingdom, Hong
Kong, Cyprus, Nigeria,
Singapore, Zimbabwe
Option 901
Argentina, Australia,
New Zealand, Mainland
China
Option 903
United States, Canada,
Brazil, Colombia,
Mexico, Philippines,
Saudi Arabia, Taiwan
Option 918
Japan
Option 902
Continental Europe,
Central African
Republic, United Arab
Republic
Option 906
Switzerland
Gray
Chapter 2
Installation
Preparing the 11974 for Use
Table 2-3. Power Cables (Continued)
Plug Type a
Cable
Part
Number
Plug b
Description
Length
cm (in.)
Straight
SR 107-2-D
200 (78)
8120-2957
90°
200 (78)
Gray
8120-4211
Straight
IEC 83-B1
200 (78)
Mint
Gray
8120-4600
90°
200 (78)
Mint
Gray
8120-5182
Straight
200 (78)
Jade
Gray
8120-2956
Option 912
Option 917
South Africa, India
Installation
90°
Gray
For Use in Country
Denmark
SI 32
8120-5181
Cable
Color
Option 919
Israel
200 (78)
Jade
Gray
a. E = earth ground, L = line, and N = neutral.
b. Plug identifier numbers describe the plug only. The part number is for the complete cable assembly.
Chapter 2
37
Installation
Preparing the 11974 for Use
Using a Conversion-Loss Data Disk with the ESA or PSA Series
Analyzers
The conversion-loss data for your mixer can be quickly loaded in the memory of an ESA or
PSA series analyzer from a floppy disk. The following process works with the floppy disk
provided by the factory with your new mixer, or with one that you have stored the
correction data. This process eliminates the time consuming and sometimes error-prone
process of manually entering the data from a table.
Loading Data
1. Insert the conversion-loss data disk (from the factory or your own) into the floppy drive
of the analyzer.
Installation
2. Press File, then Load.
3. Press Type, More, then select Corrections.
4. Press Directory Select, highlight drive -A-, then press Directory Select again.
5. Use the down arrow to select the file. The factory supplied disk has a file with the OTH
extension which places the data in the corrections set “other” location.
6. Press Load Now to load the conversion loss values into the correction table of the
analyzer.
Viewing Data
1. Press Amplitude, More, Corrections, Other (ON) and Edit to view the correction values.
2. Use the front-panel knob or up/down arrows to scroll through the list of correction
values.
38
Chapter 2
Installation
Electrostatic Discharge Information
Electrostatic Discharge Information
Electrostatic discharge (ESD) can damage or destroy electronic components. Therefore, all
work performed on assemblies consisting of electronic components should be done at a
static-safe workstation.
Figure 2-2 shows an example of a static-safe workstation. Two types of ESD protection are
shown: (a) conductive table mat and wrist strap combination, and (b) conductive floor mat
and heel strap combination. The two types must be used together to ensure adequate ESD
protection. Refer to Table 2-4 on page 41 for a list of static-safe accessories and their part
numbers.
Figure 2-2 Static-Safe Workstation
Installation
Chapter 2
39
Installation
Electrostatic Discharge Information
Reducing ESD Damage
The following are suggestions that may help reduce the amount of ESD damage that can
occur during testing and servicing instruments.
PC Board Assemblies and Electronic Components
• Handle these items at a static-safe workstation.
• Store or transport these items in static-shielding containers.
Installation
CAUTION
Do not use erasers to clean the edge-connector contacts. Erasers generate
static electricity and degrade the electrical quality of the contacts by
removing the thin gold plating.
Do not use paper of any kind to clean the edge-connector contacts. Paper or
lint particles left on the contact surface can cause intermittent electrical
connections.
Do not touch the edge-connector contacts or trace surfaces with bare hands.
Always handle board assemblies by the edges.
PC board assembly edge-connector contacts may be cleaned by using a lint-free cloth with
a solution of 80 percent electronics-grade isopropyl alcohol and 20 percent deionized water.
This procedure should be performed at a static-safe workstation.
WARNING
Isopropyl alcohol is extremely flammable, causes irritation, may
cause eye damage, and is harmful if swallowed or inhaled. It may be
harmful if absorbed through the skin. Keep away from heat, sparks,
and flame. Avoid contact with eyes, skin, clothing. Avoid breathing
vapor. Keep in tightly closed container. Use with adequate
ventilation. Wash thoroughly after handling. In case of fire, use
alcohol foam, dry chemical, or carbon dioxide: water may be
ineffective. In case of spill, soak up with sand or earth. Flush spill
area with water.
Disposal Instructions: Dispose in accordance with all applicable
federal, state, and local environmental regulations.
Test Equipment
• Before connecting any coaxial cable to an instrument connector for the first time each
day, momentarily short together the center and outer conductors of the cable.
• Before touching the center pin of any connector and before removing any assembly from
the instrument, ensure proper use of a grounded, resistor-isolated, wrist strap.
• To prevent buildup of static charge, ensure that all instruments are properly
earth-grounded.
40
Chapter 2
Installation
Electrostatic Discharge Information
Static-Safe Accessories
Table 2-4 Static-Safe Accessories
Description
9300-0797
Set includes: 3M static control mat 0.6 m × 1.2 m (2 ft × 4 ft) and 4.6 cm (15 ft)
ground wire. (The wrist-strap and wrist-strap cord are not included. They must
be ordered separately.)
9300-0980
Wrist-strap cord 1.5 m (5 ft)
9300-1383
Wrist-strap, color black, stainless steel, without cord, has four adjustable links
and a 7 mm post-type connection.
9300-1169
ESD heel-strap (reusable 6 to 12 months).
Chapter 2
Installation
Part
Number
41
Installation
Returning Equipment for Service
Returning Equipment for Service
Repackaging equipment requires original shipping containers and materials or their
equivalents. Agilent Technologies offices can provide packaging materials identical to the
original. Figure 2-3 on page 43 and Figure 2-4 on page 44 identify the original packaging
materials and their part numbers. When ordering packaging materials, it is necessary to
order the proper number of foam inserts.
Installation
CAUTION
Packaging materials not specified can result in instrument damage. Never
use styrene pellets to package electronic equipment. The pellets do not
adequately cushion the equipment, do not prevent all equipment movement,
and can generate static electricity.
Use the following procedure to prepare equipment for shipment:
1. Fill out a blue repair card (located at the end of this chapter) and attach it to the
equipment. Send a copy of any noted error messages or other helpful performance data.
If a blue repair card is not available, include at least the following information:
a. Type of service required
b. Description of the problem and whether it is constant or intermittent
c. Name and telephone number of technical contact person
d. Return address
e. Model number of returned equipment
f. Full serial number of returned equipment
g. List of any accessories returned with equipment
2. To help prevent damage during transit, pack the equipment in the appropriate
packaging materials as shown in Figure 2-3 on page 43 and Figure 2-4 on page 44.
Original shipping materials or equivalents are best; however, compliance with the
following instructions will result in acceptable packaging.
a. Wrap equipment in anti-static plastic to reduce the possibility of ESD damage.
b. For equipment that weighs less than 54 kg (120 lb), use a double-walled, corrugated
cardboard carton of 159 kg (350 lb) test strength. The carton must be both large
enough and strong enough to accommodate the equipment. Allow at least three to
four inches on all sides of the equipment for packing material.
c. Surround the equipment with 3 to 4 inches of packing material to protect the
equipment and to prevent movement in the carton. If packing foam is not available,
the best alternative is S.D.-240 Air Cap™ from Sealed Air Corporation, Commerce,
California 90001. Air Cap is plastic sheeting filled with 1-1/4 inch air bubbles. Use
pink anti-static Air Cap. Wrapping the equipment several times in this material
should provide sufficient protection and also prevent movement in the carton.
42
Chapter 2
Installation
Returning Equipment for Service
3. Seal the shipping container securely with strong nylon adhesive tape.
4. Mark the shipping container “FRAGILE, HANDLE WITH CARE” to ensure careful
handling.
5. Retain copies of all shipping papers.
Figure 2-3 Packaging Materials for 11974 Series
Installation
Item
Qty
Part Number
Description
1
1
9211-5594
Corrugated Outer Carton
2
1
5180-7865
Foam Pads (set)
3
1
5180-7885
Corrugated Pad
Chapter 2
43
Installation
Returning Equipment for Service
Installation
Figure 2-4 Packaging Materials for 11974-60028 Power Supply
Item
Qty
Part Number
Description
1
1
9211-4893
Corrugated Outer Carton
2
1
5180-7809
Foam Pads (set)
3
1
9220-4421
Corrugated Sleeve
Sales and Service Offices
Agilent Technologies Sales and Service Offices provide worldwide support for Agilent
Technologies products. To obtain servicing information or to order replacement parts,
contact the nearest office listed on page 45.
In any correspondence, always provide essential information, which includes model
numbers, serial numbers, or assembly part numbers.
.
44
Chapter 2
Installation
Returning Equipment for Service
Table 2-5. Contacting Agilent
Online assistance: www.agilent.com/find/assist
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Chapter 2
Installation
United States
(tel) 1 800 452 4844
45
Installation
Installation
Returning Equipment for Service
46
Chapter 2
Operation
3 Operation
47
Operation
What You’ll Learn in this Chapter
What You’ll Learn in this Chapter
This chapter introduces you to basic preselected external-mixing functions available using
an 11974 Series Preselected Millimeter Mixer. After a brief discussion of operating
precautions and hints, operation procedures using the most commonly-used “host”
spectrum analyzers are described. This chapter contains the following topics:
• “11974Q Front-Panel Features” on page 50
• “11974Q Rear-Panel Features” on page 51
• “Operating Precautions” on page 53
“Maximum RF Input Level” on page 53
“Maximum LO Input Level” on page 53
“Electrostatic Discharge” on page 53
• “Operating Hints” on page 54
“Preventing Erroneous Preselector Peaking or Centering During Spur Searches” on
page 54
“Remote Location of an 11974” on page 55
“RF Port Voltage Standing Wave Ratio (VSWR) Effects” on page 57
“Dynamic Range Optimization” on page 57
• Preliminary Operation for Each Spectrum Analyzer
Operation
Compatibility Reference lists all compatible spectrum analyzers with the 11974
Series and defines any requirements necessary.
Equipment Connection lists all input and output connections for operation.
Frequency Tracking Calibration mates the 11974 Series to the spectrum
analyzer. This part of the preliminary operation aligns the frequency of the 11974
tracking filter to the tuned frequency of the spectrum analyzer.
NOTE
Once the Frequency Tracking Calibration has been performed on a
designated setup (that is, a specific 11974 band matched to a specific
spectrum analyzer), and as long as the equipment remains connected, this
calibration procedure only needs to be performed occasionally to keep the
setup matched properly.
48
Chapter 3
Operation
What You’ll Learn in this Chapter
Operation for Each Spectrum Analyzer
Band Selection describes how to select the desired millimeter band for operation.
Amplitude Calibration allows you to enter in conversion-loss values for your
specific operating frequency. Each 11974 band is individually characterized and
labeled at the factory with a calibration chart of its conversion loss versus frequency.
Preselector Peaking or Centering quickly maximizes the amplitude accuracy of a
signal of interest.
Operation
Chapter 3
49
Operation
11974Q Front-Panel Features
11974Q Front-Panel Features
Operation
Figure 3-1. 11974Q Front Panel
The front panel of an 11974 Series mixer consists of an RF input port flange and two flange
clamps. The following table lists the RF input port flange types.
Table 3-1. RF Input Port Flange Types
Model
Size
Flange Type
11974Aa
WR-28
UG599/U
11974Qa
WR-22
UG383U
11974Ua
WR-19
UG383/U-M
11974Va
WR-15
UG385U
a. Refer to Table 1-2 for the ratings of these input and output connectors.
50
Chapter 3
Operation
11974Q Rear-Panel Features
11974Q Rear-Panel Features
Figure 3-2. 11974Q Rear Panel
receives power from the 11974-60028 Preselector Power Supply.a
INSTRUMENT
SELECT
switches allow the 11974 to properly scale the tune ramp of the specified
spectrum analyzer.
IF OUT
requires an SMA type cable and supplies the IF INPUT for the spectrum
analyzer. a
TUNE IN
requires a BNC type cable and receives the TUNE + SPAN sweep output
from the spectrum analyzer. a
LO IN
requires an SMA type cable and receives the first LO output from the
spectrum analyzer. a
33 GHz SET
is the low-end of the band adjustment for mating the 11974 to the
spectrum analyzer. This adjustment frequency directly corresponds to the
low-end frequency of each band.
50 GHz SET
is the high-end of the band adjustment for mating the 11974 to the
spectrum analyzer. This adjustment frequency directly corresponds to the
high-end frequency of each band.
LED SET
are the LEDs used to adjust the low-end and high-end of each band so that
the 11974 is mated properly to the spectrum analyzer.
Operation
POWER SUPPLY
a. Refer to Table 1-2 on page -19 for the ratings of these input and output connectors.
Chapter 3
51
Operation
11974-60028 Front-Panel Features
11974-60028 Front-Panel Features
Figure 3-3. 11974-60028 Front Panel
provides power for the 11974 Preselector RF Mixer.
LINE
switch applies power to the OUTPUT
PRESELECTOR POWER jack.
Operation
OUTPUT PRESELECTOR POWER
52
Chapter 3
Operation
Operating Precautions
Operating Precautions
CAUTION
To avoid damaging your 11974 and to assure accurate measurements, be sure
to follow the recommendations in this section.
Maximum RF Input Level
The maximum RF input level, as stated in Table 1-2 on page 19, is +25 dBm CW, Peak, or
Average. However, since the 1 dB compression point at the RF input is between 0 and
+6 dBm depending on the band, meaningful measurements will end long before the
damage level is reached. Therefore, for amplitude accuracy and protection against damage,
limit the input power to the 1 dB compression point level.
Maximum LO Input Level
The maximum LO input level is +18 dBm. Care should be taken when using the 11975A
Microwave Amplifier as an LO booster for the 8566B Spectrum Analyzer or when using the
11975A for remote-location connections with the 11974 Series.
CAUTION
When using an 11975A Amplifier with an 11974, the rear-panel ALC switch
must be set to the ON position and the OUTPUT POWER LEVEL set to the
stop at +16 dBm before connecting the amplifier. If the ALC switch is left in
the OFF position, the amplifier output power is high enough to destroy the
mixer diodes.
Operation
Electrostatic Discharge
CAUTION
When configuring the 11974 with a spectrum analyzer, always connect the
SMA cables to the spectrum analyzer BEFORE connecting them to the 11974.
This will minimize the danger of electrostatic discharge damaging the 11974.
Chapter 3
53
Operation
Operating Hints
Operating Hints
The following operating hints are provided for your convenience.
Preventing Erroneous Preselector Peaking or Centering During
Spur Searches
When performing spurious response tests on a device under test (DUT), the spectrum to be
measured typically contains both large and small signals. If the spurs are smaller than −60
to −65 dBc, they may be confused with the image or multiple response of the large signal.
In this type of test, activate the preselector-peak routine only on the larger signals. This
will avoid attempting to peak on small unwanted 11974 responses of the large signals
which can result in amplitude errors. Another way to avoid this potential problem is to
calculate the frequency of the image or multiple response and avoid measurements at
these precise frequencies.
The frequency of the image response can be found in Table 1-1 on page 15, and the
frequencies of the multiple responses can be found in Table 1-2 on page 19.
Listed below are the symptoms of errors caused by peaking on image or multiple
responses:
• Large amplitude errors for the large signals after peaking or centering on a suspected
small DUT spur which is actually an unwanted 11974 response,
Operation
• Preselector peak DAC numbers or Presel Adjustment frequencies consistently at or
near one extreme of range (due to peaking or centering on an image response of a large
signal),
DAC Number After Peaking
Spectrum Analyzer
0
71000C with 70907B
255
8560 Series Portable
63 with message “Peak Not Found” displayed
8566B
Presel Adjustment Frequency After Centering
Spectrum Analyzer
Frequency near −350 Hz
or
Frequency 0.0 Hz “Preselector centering failed”
E4440A, E4446A, E4448A,
E4407B
• Random DAC numbers over a wide range when peaking is repeated (due to peaking on
a multiple response of a large signal).
54
Chapter 3
Operation
Operating Hints
Remote Location of an 11974
In cases where the device-under-test (DUT) is farther away than the 1 meter LO and IF
cables can accommodate, place the 11974 close to the DUT, but place the host spectrum
analyzer the desired distance away. In order to preserve the excellent amplitude accuracy
of the 11974, the +14.5 to 16 dBm LO power must be supplied even though the LO cables
may become quite long.
To supply the LO power, insert an 11975A Amplifier at the 11974 location. (Refer to Figure
3-4. on page 56.) To provide the proper input power level for the 11975A Amplifier, a coax
attenuator is also required at the input of the 11975A such that the sum of the loss of the
extended LO cable and the attenuator value add up to a range of 9–11 dB at 6 GHz. Set the
OUTPUT POWER LEVEL on the 11975A for +16 dBm. The extra IF cable loss at 321 MHz
should be added to the conversion loss value of the 11974. Perform the Frequency Tracking
Calibration procedure after connection of all cables.
Operation
Chapter 3
55
Operation
Operating Hints
Operation
Figure 3-4. Setup Configuration for Remote Location of an 11974
56
Chapter 3
Operation
Operating Hints
RF Port Voltage Standing Wave Ratio (VSWR) Effects
As with most bandpass filters, the magnetically tunable Barrium-Ferrite bandpass filter of
the 11974 is reflective out of its passband. In addition, the 11974 does not have a
programmable RF port attenuator to improve the VSWR in band or out of band. This may
cause measurement errors when testing VSWR sensitive DUTs outside of their operating
frequency range. One measurement example in which VSWR effects should be minimized
is when searching for spurious signals in an oscillator. To improve the accuracy of the
measurement, use an 365 Series waveguide isolator (included in Option 001) or an
attenuator at the RF port of the 11974 to reduce this particular VSWR effect.
Dynamic Range Optimization
An attenuator at the RF port of the 11974 can be used to set the RF input power level for
maximum dynamic range, approximately −30 dBm, as shown in Figure 1-3 on page 23,
Figure 1-2 on page 12, Figure 3-5. on page 59, and Figure 1-6 on page 26.
Operation
Chapter 3
57
Operation
Using an 8566B Spectrum Analyzer
Using an 8566B Spectrum Analyzer
Preliminary Operation
Compatibility Reference
Refer to Chapter 2, “Installation,” on page 27 for information relating to retrofit
requirements for 8566A and older 8566B Spectrum Analyzers.
Equipment Connection
Connect the equipment as shown in Figure 3-5. on page 59 and use the following checklist
to verify the connections.
• 11974 LO IN to 11975A OUTPUT (SMA cable, 5061-5458)
• 11974 IF OUT to 8566B IF INPUT (SMA cable, 5061-5458)
• 11974 TUNE IN to 8566B SWEEP + TUNE OUT (BNC cable, 8120-1839; BNC f–f
adapter, 1250-0080; BNC cable, 8120-2582)
• 11974 POWER SUPPLY to 11974-60028 PRESELECTOR POWER
• 8566B 1ST LO OUTPUT to 11975A INPUT (SMA cable, 5061-5458)
Operation
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier into
the test setup. If the ALC switch is left in the OFF position, the amplifier
output power is high enough to destroy the mixer diodes.
Set the 11975A output power to +16 dBm and verify that the amplifier's front-panel
unleveled indicator is not lit.
58
Chapter 3
Operation
Using an 8566B Spectrum Analyzer
Figure 3-5. 11974 Connections Using an 8566B
Operation
Frequency Tracking Calibration
Use this procedure to align the frequency of the 11974 tracking filter to the tuned
frequency of the 8566B. Fo0llow this procedure anytime the 11974 is connected to a
different spectrum analyzer. Periodically check the calibration.
1. Set the 11974 rear-panel switches 8566B and LEDS to the ON position, and the other
two switches to the OFF position, to properly scale the tune ramp of the analyzer.
2. Set the spectrum analyzer to the appropriate millimeter band by using the following
key sequence for the appropriate mixer:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
Chapter 3
59
Operation
Using an 8566B Spectrum Analyzer
3. On the spectrum analyzer, set the preselector DAC to 32 (the center of its 0–63 range)
by pressing SHIFT, GHz, 32, and Hz.
4. Set the spectrum analyzer to a frequency span of 0 Hz by pressing FREQUENCY, SPAN, 0,
and Hz.
NOTE
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings as indicated in steps 5 and 7 in unused state
registers.
5. Set the spectrum analyzer center frequency to the low end of the band by pressing
CENTER FREQUENCY and entering the corresponding value for the mixer listed below,
then save this setting in an unused register.
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
6. On the rear panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “26.5 GHz SET”
for an 11974Q: “33.0 GHz SET”
for an 11974U: “40.0 GHz SET”
Operation
for an 11974V: “50.0 GHz SET”
7. Change the spectrum analyzer center frequency to the high end of the band as indicated
below; then save this setting in an unused register:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
8. On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “40 GHz SET”
for an 11974Q: “50 GHz SET”
for an 11974U: “60 GHz SET”
for an 11974V: “75 GHz SET”
9. Repeat step 5 through step 8 until green lights are lit at both frequencies without any
additional adjustments.
60
Chapter 3
Operation
Using an 8566B Spectrum Analyzer
Operation
Band Selection
1. If necessary, mate the 11974 to the spectrum analyzer being used for preselected
external mixing by using the Frequency Tracking Calibration procedure above.
2. Set the spectrum analyzer to the appropriate millimeter band by using the key
sequence listed below:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
NOTE
The above band selection key sequence must be used to enter the external
mixing band of operation. Do not enter in the center frequency of the band
directly.
Amplitude Calibration
The 8566B uses a single-point conversion-loss factor per band. The conversion-loss number
is saved with an instrument preset, when the band is exited, and with the SAVE and
RECALL functions.
Enter the conversion loss at the desired frequency from either the calibration label on the
bottom of the 11974 or the supplied calibration sheet using the following key sequences.
2. Enter the conversion loss value of the desired frequency, then terminate the entry with
dB.
Preselector Peaking
1. Place the active marker on the desired signal to be peaked using PEAK SEARCH or
MARKER NORMAL.
TIP
To complete the preselector-peaking routine more quickly, place the signal at
center screen and reduce the frequency span until the sweep time is
approximately 200 ms.
2. Peak the desired signal by pressing PRESEL PEAK.
Chapter 3
61
Operation
1. SHIFT, 5, and MHz
Operation
Using an 8566B Spectrum Analyzer
Operation
General Descriptions of 8566B External-Mixing Functions
SHIFT, ⇑
selects the first millimeter frequency “lettered” band, K-band
(18 – 26.5 GHz). (Note: K-band is not available in the 11974 Series.)
Each succeeding press of the ⇑ key advances to the next lettered
band. For example, A band can be displayed by pressing SHIFT ⇑ ⇑.
The lettered bands are paired with harmonic numbers. Due to some
overlap between bands, always enter the millimeter band by using
the SHIFT ⇑ keys to select the lettered band. Do not enter in the
center frequency of the band directly.
SHIFT, GHz
calls the preselector-peak DAC number to the active function. The
DAC provides a vernier offset to the TUNE + SPAN to account for
slight preselector mistracking with time, temperature, and so on. For
the 0 to 63 DAC number range, the frequency range is approximately
n times 46 MHz, where n is the harmonic number. The DAC number
is saved with instrument preset (IP), but it is not saved using the
SAVE/RECALL function or with a learn string.
SHIFT, 5, MHz
calls CONVERSION LOSS to the active function. This is a
single-point amplitude correction for each millimeter band, and each
band's conversion loss is saved with IP, when the band is exited, and
with the SAVE/RECALL functions.
SHIFT, 2, MHz
calls the FULBAND number to the active function. This is an
alternative function to SHIFT, ⇑, ⇑ in which each millimeter lettered
band can be entered by a FULBAND number. For example, A band is
equivalent to FULBAND 7, Q band is equivalent to FULBAND 8,
and so on.
SHIFT, 1, MHz
displays the MHz key menu on the display screen for reference
purposes.
NOTE
SHIFT 3, 4, 6, 7, and 8 MHz keys are NOT used with the 11974 Series.
62
Chapter 3
Using an 71000 Series Spectrum Analyzer
Operation
with an 70907B, 70909A, or 70910A
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A
Preliminary Operation
NOTE
This section provides information for the 70907B, however the operation of
the 70909A and 70910A is similar. Minor differences may be noted, but the
necessary deviations from these exact instructions will be obvious.
Compatibility Reference
Refer to Chapter 2, “Installation,” on page 27 for information relating to 71000 Series
Modular Spectrum Analyzer System compatibility with the 11974 Series.
Equipment Connection
Connect the equipment as shown in Figure 3-6. and use the following checklist to verify
the connections.
• 11974 LO IN to 70907B LO OUTPUT (SMA cable, 5061-5458)
• 11974 IF OUT to 70907B IF INPUT (SMA cable, 5061-5458)
• 11974 TUNE IN to 70907B PRESEL TUNE/SPAN (BNC cable, 8120-1839)
• 11974 POWER SUPPLY to 11974-60028
Chapter 3
Operation
Figure 3-6. 11974 Connections to the 71000 Series Spectrum Analyzer
63
Operation
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A
Frequency Tracking Calibration
Use this procedure to align the frequency of the 11974 tracking filter to the tuned
frequency of the spectrum analyzer. Follow this procedure whenever the 11974 is
connected to a different spectrum analyzer. Periodically check the calibration.
1. Set the 11974 rear-panel switches 70907B (this switch also applies to the 70909 and
70910A) and LEDS to the ON position, and the other two switches to the OFF position,
to properly scale the tune ramp of the spectrum analyzer.
2. When the 71000 is set up with multiple active input ports available, configure the
analyzer for a preselected external mixer by using the following key sequence:
MENU
State
select input
IN “n” EM “Model Number”1
If the State key is not available when you press MENU, skip configuration
step 2.
NOTE
3. Select the frequency band of operation by using the following key sequence:
State
ext mixer
Operation
fulband KAQUVE
Press the softkey for the appropriate frequency band. (INSTR PRESET will reset this
to the default active input, see INSTR PRESET on page 68.)
4. Initialize the preselector-peak DAC to the center of its range by pressing State,
pre-select, PRESEL DAC, and 128, then terminate the entry with the ENTER softkey.
5. Set the analyzer to zero span by pressing Freq and SPAN and entering 0 Hz.
NOTE
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings in unused state registers after performing step a
and step c.
1. “Model Number” will be either 70907A, 70909A, or 70910A; “n” is a number indicating the order in
which the input devices were found by the input device search.
64
Chapter 3
Using an 71000 Series Spectrum Analyzer
Operation
with an 70907B, 70909A, or 70910A
6. To adjust the tracking between the 71000 and the 11974, perform the following steps:
a. Set the spectrum analyzer center frequency by pressing Freq and CENTER and
entering the corresponding start frequency value for the mixer listed below, then
save this setting in an unused register.
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
b. On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “26.5 GHz SET”
for an 11974Q: “33.0 GHz SET”
for an 11974U: “40.0 GHz SET”
for an 11974V: “50.0 GHz SET”
c. Change the spectrum analyzer center frequency to the stop frequency value
indicated below, then save this setting in an unused register:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
for an 11974A: “40 GHz SET”
for an 11974Q: “50 GHz SET”
for an 11974U: “60 GHz SET”
for an 11974V: “75 GHz SET”
e. Repeat step a through step d until green lights are lit at both frequencies without
additional adjustments.
Chapter 3
65
Operation
d. On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
Operation
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A
Operation
Band Selection
1. If necessary, mate the 11974 to the spectrum analyzer being used for preselected
external mixing by using the procedure “Frequency Tracking Calibration” on page 64.
2. Use the following key sequence to enter the external mixing mode and to select the
desired band of operation.
MENU
State
ext mixer
fulband KAQUVE
Press the softkey for the desired band.
NOTE
The above band selection key sequence must be used to enter the external
mixing band of operation. Do not enter in the center frequency of the band
directly.
Amplitude Calibration for a Single Frequency
Enter the conversion loss at the desired frequency from either the calibration label on the
bottom of the 11974 or the supplied calibration sheet by using the following key sequence.
State
Operation
ext mixer
CONV LOSS
Enter the conversion loss value of the desired frequency, then terminate the entry with
dB.
NOTE
The above procedure is a single-point conversion-loss correction. For an
alternative procedure, available by remote programming only, refer to
“Conversion Loss Versus Frequency Correction” on page 69.
66
Chapter 3
Using an 71000 Series Spectrum Analyzer
Operation
with an 70907B, 70909A, or 70910A
Preselector Peaking
1. Place the active marker on the desired signal to be peaked.
Hint: To complete the preselector-peaking routine more quickly, place the signal at
center screen and reduce the frequency span until the sweep time is approximately
100 ms.
2. Peak the desired signal by using the following key sequence.
State
pre-select
PRESEL PEAK
General Descriptions of 71000 Series Spectrum Analyzer
External-Mixing Functions
allows access to the following softkey functions that control the
measurement range when an external mixer extends the
spectrum-analyzer frequency range. The ext mixer softkey can be
found under the State firmkey.
ext mixer
fulband KAQUVE
PRESEL PEAK
fulband WFDGYJ
PRESEL DAC
CONV LOSS
fulband KAQUVE
fulband WFDGYJ
specify the frequency range for measurements made with external
mixers. Twelve frequency bands are available. Table 3-2. lists the
start and stop frequencies of each band and also shows which
local-oscillator harmonic (N) is used for the mixing process. Once a
band is selected, the frequency range is locked and the spectrum
analyzer tunes with the local-oscillator harmonic for that band only.
(Selecting a new band presets the instrument in that band.)
Table 3-2. External Mixing Bands and Associated Mixing Harmonics
Band
Harmonic Number (N)
Frequency Range (GHz)
K
6−
18.0 to 26.5
A
8+
26.5 to 40.0
Q
10+
33.0 to 50.0
U
10+
40.0 to 60.0
V
14+
50.0 to 75.0
E
16+
60.0 to 90.0
W
18+
75.0 to 110.0
Chapter 3
67
Operation
and
Operation
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A
Table 3-2. External Mixing Bands and Associated Mixing Harmonics
Band
Harmonic Number (N)
Frequency Range (GHz)
F
24+
90.0 to 140.0
D
30+
110.0 to 170.0
G
36+
140.0 to 220.0
Y
42+
170.0 to 260.0
J
50+
220.0 to 330.0
(conversion loss) offsets the reference level to compensate for
amplitude losses at the active input port. If necessary, use
select input to activate the desired input port before specifying its
conversion-loss offset.
CONV LOSS
To clear the offset, enter a conversion loss of zero.
After instrument preset, a default value of 30 dB is activated
automatically for the input port of the external-mixer-interface
module.
(preselector peak) adjusts the tracking of the preselector filter to
yield maximum amplitude accuracy at the active marker position. If
a marker is not present, PRESEL PEAK places a marker at the
highest signal level.
PRESEL PEAK
Operation
Whenever a measurement is made, the current preselector DAC
value corresponding to the selected measurement range determines
the preselector tracking. Press PRESEL PEAK to repeak the
preselector and store a new value in the preselector DAC. When
measuring frequency spans greater than 0 Hz, the analyzer must be
swept several times to peak the preselector. Thus, the analyzer
requires several minutes to peak the preselector when measuring
with slow sweep times. To execute the peaking function quickly,
change the span to either 0 Hz or such that the sweep time is
approximately 100 ms, before pressing PRESEL PEAK.
PRESEL DAC
(preselector DAC) enters a value into the preselector DAC for the
frequency range corresponding to the frequency at the marker. If a
marker is not present, PRESEL DAC places a marker at the center of
the display.
pre-select
allows access to the preselector functions when a preselector module
is in the system. The pre-select softkey can be accessed by pressing
State.
preset input
sets which active input port will be selected when the INSTR
PRESET is pressed. The preset input softkey can be accessed by
pressing State, then MORE.
INSTR PRESET
resets to the preset input and to the lowest full frequency range
available. (For an external mixer, this is band A.) This is a front
panel hardkey.
68
Chapter 3
Using an 71000 Series Spectrum Analyzer
Operation
with an 70907B, 70909A, or 70910A
Conversion Loss Versus Frequency Correction
The 71000 Series Spectrum Analyzers with the 70907B External Mixer Interface Module
installed has the amplitude-correction function (AMPCOR) available by remote
programming.
Use AMPCOR to compensate for the 11974 frequency-dependent conversion-loss
variations. Up to 200 pairs of frequency-amplitude correction points can be entered,
depending on the amount of available internal memory. The frequency values entered
must be in increasing order, or an error condition results. Whenever AMPCOR is on, the
correction values are added to all measurement results.
The values of the correction points are applied across the active measurement range.
Between points, the correction values are interpolated. When measuring at frequencies
outside the first and last correction points, these values are used as the correction value.
When AMPCOR is executed, the frequency pairs are stored in internal memory. The
remote commands DISPOSE ALL, FORMAT, PERASE, and DISPOSE AMP COR erase the
amplitude-correction pairs from memory.
NOTE
DISPOSE ALL, FORMAT, and PERASE erases much more then the
amplitude-correction pairs from memory. Do not use these commands without
referring to the programmer’s manual for the 70000 and 70900B to determine
their effect on instrument programming.
Because AMPCOR adjusts IF gain and attenuation, AMPCOR should be used with care
when measuring signals near the compression level that are also at a frequency that is
corrected by the AMPCOR command.
OUTPUT 718; "CNVLOSS 0DB;"
Then build the AMPCOR table with frequency conversion loss pairs. The following
example program line shows three pairs of frequency conversion-loss values for a typical
11974V.
OUTPUT 718; "AMPCOR 50GHZ, 49.6DB, 51GHZ, 49.1DB, 52GHZ,48.6DB;"
The conversion loss corrections are activated by the AMPCOR ON command; use AMPCOR OFF
to deactivate the function. (Be sure to manually enter a single-point conversion-loss value
if AMPCOR has been used.)
Chapter 3
69
Operation
To use AMPCOR for the 11974 conversion loss correction, first set the single-point
conversion-loss function to zero with the following command:
Operation
Using an 71000 Series Spectrum Analyzer
with an 70907B, 70909A, or 70910A
To print out an existing AMPCOR table, use the program listed below.
10
20
30
40
50
60
70
80
90
100
110
DIM A$(1:20)[30]
OUTPUT 718;"CNVLOSS 0DB;"
OUTPUT 718;"AMPCOR 50GHZ, 46.1DB, 52GHZ, 46.7DB, 53GHZ,47.2DB;"
!
OUTPUT 718;"AMPCOR?;"
ENTER 718 USING "%,K";A$(*)
!
FOR I=1 TO 10
PRINT "Point ";I,A$(I)
NEXT I
END
Line 30:
Generates an AMPCOR table.
Line 60:
% specifies that an EOI terminates the entire statement. K specifies that
an LF terminates the individual string entry.
Returned values are in the format where the frequency in Hz is listed first, followed by the
conversion loss in dB. See the following example.
Operation
Point
Point
Point
Point
Point
Point
Point
Point
Point
Point
1 50.00000000E+9,46.1
2 52.00000000E+9,46.7
3 53.00000000E+9,47.2
4
5
6
7
8
9
10
Returned values are 0,0 when AMPCOR is set to OFF.
To dispose of an AMPCOR table, use the following command:
OUTPUT 718; "DISPOSE AMP COR;"
NOTE
Be sure that there is a space between AMP and COR when using the DISPOSE
command.
For further information, consult the 70900B Local-Oscillator-Controlled Modules
Programming Manual, part number 70900-90137.
70
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum
Analyzers
NOTE
External mixing cannot be performed on instruments with Option 002
Tracking Generator.
Preliminary Operation
Compatibility Reference
Refer to Chapter 1, “General Information,” on page 7 for information relating to retrofit
requirements for 8561B and 8560A Spectrum Analyzers.
Equipment Connections
Connect the equipment as shown in Figure 3-7. on page 71 and use the following checklist
to verify the connections.
• 11974 LO IN to the analyzer 1ST LO OUTPUT (SMA, 5061-5458)
• 11974 IF OUT to the analyzer IF INPUT (SMA, 5061-5458)
• 11974 TUNE IN to the analyzer J8, LO SWP|0.5V/GHz OUTPUT (BNC cable,
8120-1839; BNC f-f adapter, 1250-0080; BNC cable, 8120-2582)
• 11974 POWER SUPPLY to 11974-60028 PRESELECTOR POWER
Chapter 3
Operation
Figure 3-7. 11974 Connections Using an 8563A, 8561B,
8560A, or 8560E-Series Spectrum Analyzers
71
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
Frequency Tracking Calibration
Use this procedure to align the frequency of the 11974 tracking filter to the tuned
frequency of the spectrum analyzer Follow this procedure anytime the 11974 is connected
to a different spectrum analyzer. Periodically check the calibration.
1. Set the 11974 rear-panel switches “8563/61/60” and “LEDS” to the ON position, and the
other two switches to the OFF position, in order for the 11974 to properly scale the tune
ramp of the spectrum analyzer.
2. Configure the analyzer for a preselected external mixer by pressing CONFIG and setting
EXT MXR PRE UNPR to PRE.
3. Set the LO tuning sensitivity as follows:
For the 8564E or 8565E, press AUX CTRL, REAR PANEL, and setting V/GHz .25 .50
to .50
For all other analyzers, press AUX CTRL, REAR PANEL, and .5 V/GHz (FAV)
4. Enter the full-band selection mode by using the following key sequence:
AUX CTRL
EXTERNAL MIXER
FULL BAND
Use the ⇑ or ⇓ key until the desired band is reached.
5. Set the spectrum analyzer to zero span by pressing SPAN, ZERO SPAN.
Operation
6. Set the spectrum analyzer center frequency by pressing FREQUENCY, CENTER FREQ and
entering the corresponding value for the mixer listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
7. Initialize the preselector-peak DAC at the start of the band by using the following key
sequence:
AUX CTRL
EXTERNAL MIXER
PRESEL PEAK
PRESEL MAN ADJ
128 Hz
72
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
8. Set the spectrum analyzer center frequency by pressing FREQUENCY, CENTER FREQ and
entering the corresponding value for the mixer listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
9. Initialize the preselector-peak DAC at the end of the band by using the following key
sequence:
AUX CTRL
EXTERNAL MIXER
PRESEL PEAK
PRESEL MAN ADJ
128 Hz
NOTE
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings in unused state registers as indicated in step 9 and
step 11.
10.Set the spectrum analyzer center frequency by pressing FREQUENCY, CENTER FREQ and
entering the corresponding value for the mixer listed below, then save this setting in an
unused register.
Operation
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
11.On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “26.5 GHz SET”
for an 11974Q: “33.0 GHz SET”
for an 11974U: “40.0 GHz SET”
for an 11974V: “50.0 GHz SET”
Chapter 3
73
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
12.Change the spectrum analyzer center frequency to the value indicated below, then save
this setting in an unused register:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
13.On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “40 GHz SET”
for an 11974Q: “50 GHz SET”
for an 11974U: “60 GHz SET”
for an 11974V: “75 GHz SET”
14.Repeat step 10 through step 13 until green lights are lit at both frequencies without any
additional adjustments.
Operation
Band Selection
1. If necessary, configure the analyzer for a preselected external mixer by pressing CONFIG
and setting EXT MXR PRE UNPR to PRE.
Operation
2. Set the LO tuning sensitivity as follows:
For the 8564E or 8565G, press AUX CTRL, REAR PANEL, and setting V/GHz .25 .50
to .50
For all other analyzers, press AUX CTRL, REAR PANEL, and .5 V/GHz (FAV)
3. If necessary, mate the 11974 to the spectrum analyzer being used for preselected
external mixing by using the Frequency Tracking Calibration procedure above.
4. Use the following key sequence to enter the external mixing mode and to select the
desired band of operation.
AUX CTRL
EXTERNAL MIXER
FULL BAND
Use the ⇑ or ⇓ key until the desired band is reached.
NOTE
The above band-selection key sequence must be used to enter the external
mixing band of operation. Do not enter in the center frequency of the band
directly.
74
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
Amplitude Calibration
Enter the conversion loss table at the preset frequencies from either the calibration label
on the bottom of the 11974 or the supplied calibration sheet by using the following key
sequence. (Note: the analyzer automatically interpolates between the preset frequencies.)
AUX CTRL
EXTERNAL MIXER
AMPTD CORRECT
CNV LOSS VS FREQ
Enter the conversion loss value of the indicated preset frequency, then terminate the
entry with dB.
Advance to the next preset frequency by pressing ⇑ and enter the conversion loss of the
indicated frequency. Continue until the highest frequency is reached, then use the ⇑ and
⇓ keys to scan through the frequencies to verify or edit the conversion-loss values
entered.
NOTE
For V band, it may be necessary to first use the following key sequence to
initialize the average of the conversion loss versus frequency table near the
values for this band.
• AUX CTRL
• EXTERNAL MIXER
• AMPTD CORRECT
• AVERAGE CNV LOSS
Operation
• Enter in 47 and terminate with dB.
Preselector Peaking
1. Access the preselector-peak functions by pressing the following keys:
AUX CTRL
EXTERNAL MIXER
PRESEL PEAK
2. Place the active marker on the desired signal to be peaked.
3. Peak the desired signal by pressing PRESEL AUTO PK.
Chapter 3
75
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
General Description of External-Mixing Functions
selects either preselected external mixing mode or unpreselected
external mixing mode. This softkey sets the external mixer
configuration used by the softkey menu found under the
EXTERNAL MIXER softkey under AUX CTRL.
CONFIG,
EXT MXR PRE UNPR
If the preselected external mixer mode is selected, rear-panel output
J8 of the analyzer is automatically switched to provide an output of
1.5 V/GHz of the LO frequency, when 0.5V/GHz (FAV) is selected.
The 1.5 V/GHz of the LO frequency definition is required for the
11974 Series preselected external mixers.
NOTE
There are two different types of external mixers available, preselected and
unpreselected. The EXT MXR PRE UNPR softkey function applies only to the
selection of the type of external mixer to be used. It does not switch the
analyzer from internal to external mixing.
accesses a menu of functions that allow you to extend the frequency
range using external mixers. These functions are described below.
EXTERNAL MIXER
NOTE
No external mixing capabilities are available with an 8560A/E Option 002.
Resolution bandwidths less than or equal to 100 Hz are not available with
external mixers.
allows you to select a commonly-used frequency band above 18 GHz.
These bands are shown in Table 3-3. on page 77. Use the step keys or
the knob to select a desired frequency band; the selected band
appears in the active function block. Activating FULL BAND also
activates the harmonic-lock function.
AMPTD CORRECT
displays a menu of functions that set conversion losses and flatness
data.
AVERAGE CNV LOSS
displays the mean conversion loss for the current harmonic and
allows you to enter new conversion loss data. In a full frequency band
(such as A band), the mean conversion loss is defined as the
minimum loss plus the maximum loss for that band divided by two.
To change the maximum and minimum values, use the
CNV LOSS VS FREQ softkey. Any change to the average conversion
loss also affects the flatness data, which is described below.
Operation
FULL BAND
The default conversion loss value for each band is 30 dB.
76
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
displays the stored conversion loss for a specific frequency in the
current band. This allows amplitude correction to be entered to
compensate for changes in conversion loss with frequency. To enter a
new value, use the data keys. To change the displayed frequency, use
the step keys. Any changes to the data also affect the mean
conversion loss stored under AVERAGE CNV LOSS. Table 3-3. on
page 77 shows the number of flatness points for each band and the
default flatness values. To view the correction, connect a 310.7 MHz
signal of a known amplitude (approximately −30 dBm) to the IF
input and set the analyzer to sweep the associated band.
CNV LOSS VS FREQ
Table 3-3. Flatness Points and Conversion Losses for Frequencies above 18 GHz
Frequency Range (GHz)
Number of
Flatness Points
Point
Spacing
Default
Conversion Loss
K
18.0 to 26.5
6
2 GHz
30 dB
A
26.5 to 40.0
8
2 GHz
30 dB
Q
33.0 to 50.0
7
3 GHz
30 dB
U
40.0 to 60.0
6
4 GHz
30 dB
V
50.0 to 75.0
6
5 GHz
30 dB
E
60.0 to 90.0
7
5 GHz
30 dB
W
75.0 to 110.0
8
5 GHz
30 dB
F
90.0 to 140.0
6
10 GHz
30 dB
D
110.0 to 170.0
7
10 GHz
30 dB
G
140.0 to 220.0
9
10 GHz
30 dB
Y
170.0 to 260.0
7
15 GHz
30 dB
J
220.0 to 325.0
8
15 GHz
30 dB
PRESEL PEAK
NOTE
Operation
Frequency
Band
(available only with preselected external mixing) displays the
preselected external mixer softkey menu, which is described below.
This softkey menu is only available when the EXT MXR PRE UNPR
softkey under CONFIG is set to “preselected” mode.
The PRESEL PEAK softkey and its lower-level softkeys are only for use with
preselected external mixers. The preselected configuration must initially be
set up using the EXT MXR PRE UNPR softkey under CONFIG.
Chapter 3
77
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
automatically peaks the preselector of the external mixer on a
desired signal on a trace. Set the trace to clear-write mode, place a
marker on the desired point, then press PRESEL AUTO PK. The
peaking routine zooms to zero span, peaks the preselector tracking,
then returns to the original span. To read the new preselector
peaking number, press PRESEL MAN ADJ.
PRESEL AUTO PK
The PRESEL AUTO PK softkey appears under three different
menus—AMPLITUDE, INTERNAL MIXER, and EXTERNAL MIXER. This
PRESEL AUTO PK softkey is only available for use with preselected
external mixing. Refer to the PRESEL AUTO PK softkey under
AMPLITUDE or the INTERNAL MIXER menu of functions for use with
internal mixers.
allows the user to adjust the external preselector tracking. Pressing
PRESEL MAN ADJ
PRESEL MAN ADJ causes the preselector tracking number that
applies to the marker frequency to be displayed in the active function
block. If no marker is active, pressing PRESEL MAN ADJ
automatically activates a marker at the peak.
Operation
When the tracking number is displayed in the active function block,
it can be changed using the data keys, the step keys, or the knob.
This tracking number ranges from 0 to 255. It is initialized to 128
when entering the external mixer mode of operation or whenever the
band number is changed. Changing the tracking number affects the
data in the current data table, which may be a previously saved user
data table. The resulting value, after changing this function, is only
valid for the current band. To save this data, use the SAVE PRSEL PK
softkey found under SAVE. This overwrites any previously saved
preselector data regardless of whether that data was generated while
using internal or external preselectors.
The PRESEL MAN ADJ softkey appears under three different
menus—AMPLITUDE, INTERNAL MIXER, and EXTERNAL MIXER. This
PRESEL MAN ADJ softkey is only available for use with preselected
external mixing. Refer to the PRESEL MAN ADJ softkey under
AMPLITUDE or the INTERNAL MIXER menu of functions for use with
internal mixers.
78
Chapter 3
Operation
Using 8563A, 8561B, 8560A, or 8560 E/EC-Series Spectrum Analyzers
MARKER NORMAL
activates a single marker and places it at the center of the trace. This
softkey is also annotated as MARKER DELTA, if delta-marker mode
has been previously activated by the MARKER DELTA softkey under
the MKR menus.
If one marker is already on, no operation takes place. If two markers
are on (as in MARKER DELTA mode), pressing MARKER DELTA deletes
the anchor marker and makes the active one the new, single marker.
The marker reads the amplitude and the frequency (or relative time,
when the frequency span equals 0 Hz), and displays these values in
the active function block and in the upper-right corner of the display.
To move the marker, use either the knob, the step keys, or the data
keys.
The marker reads data from the currently active trace. (An active
trace is one in either the clear-write or max-hold mode; this may be
either trace A or trace B.) If both traces are active, or if both traces
are in view mode, the marker reads data from trace A.
PEAK SEARCH
places a marker on the highest point on a trace. The frequency and
amplitude of the marker are displayed in the upper-right corner of
the screen; PEAK SEARCH does not alter the active function.
NEXT PEAK
moves the active marker to the next highest trace point relative to
the current marker position. This function finds successively lower
peaks when the key is pressed repeatedly. The peak excursion and
the peak threshold criteria are applied to determine the next highest
peak.
Operation
Chapter 3
79
Operation
Using an E4407B Spectrum Analyzer or 7405A EMC Analyzer
Using an E4407B Spectrum Analyzer
or 7405A EMC Analyzer
Preliminary Operation
Compatibility Reference
Refer to Chapter 2, “Installation,” on page 27 for information relating to retrofit
requirements for E4407B or E7405A analyzer. The E4407B is used in the following
procedure.
Equipment Connection
Connect the equipment as shown in Figure 3-8. and use the following checklist to verify
the connections.
• 11974 LO IN to E4407B LO OUTPUT (SMA cable, 5061-5458)
• 11974 IF OUT to E4407B IF INPUT (SMA cable, 5061-5458)
• 11974 TUNE IN to E4407B Preselector Tune Output (BNC cable, 8120-1839; BNC f–f
adapter, 1250-0080; BNC cable, 8120-2582)
• 11974 POWER SUPPLY to 11974-60028 PRESELECTOR POWER
Operation
Figure 3-8. 11974 Connections Using an E4407B or E7405A
80
Chapter 3
Operation
Using an E4407B Spectrum Analyzer or 7405A EMC Analyzer
Frequency Tracking Calibration This procedure is used to align the frequency of the
preselector filter of the Agilent 11974 to the tuned frequency of the analyzer. This
procedure should be followed any time that the Agilent 11974 is connected to a different
analyzer. The calibration should be periodically checked.
1. Set the Agilent 11974 rear-panel switches “ESA/PSA/70907B” and “LEDS” to the ON
position, and the other two switches to the OFF position, in order for the Agilent 11974
to properly scale to the tune signal of the analyzer.
2. Configure the analyzer for a preselected external mixer by pressing the following keys:
Preset, Factory Preset (if present), Input/Output, Input Mixer (Ext), Mixer Config, Mixer Type
(Presel)
3. Set the desired band of operation. Press Return, Ext Mix Band, A, Q, U, or V. (Note that
only A,Q,U, and V bands are available.)
4. Set the Presel Adjust to 0 MHz by pressing AMPLITUDE, Presel Adjust, 0, MHz.
5. Set the analyzer to zero span by pressing SPAN, Zero Span.
6. Set the analyzer center frequency by pressing FREQUENCY, Center Freq, and enter the
corresponding value for the appropriate mixer. (Refer to Table 3-4.) On the rear panel of
the Agilent 11974, adjust the corresponding potentiometer until one or both of the green
LEDs are lit.
Table 3-4.
Analyzer Center
Frequency
Potentiometer
11974A
26.5 GHz
“26.5 GHz Adjust”
11974Q
33.0 GHz
“33.0 GHz Adjust”
11974U
40.0 GHz
“40.0 GHz Adjust”
11974V
50.0 GHz
“50.0 GHz Adjust”
Operation
Mixer
Agilent P/N
7. Change the analyzer center frequency to the value indicated in Table 3-5. and again
adjust the corresponding potentiometer on the rear panel of the 11974 until one or both
of the green LEDs are lit.
Table 3-5.
Mixer
Agilent P/N
Analyzer Center
Frequency
Potentiometer
11974A
40.0 GHz
“40.0 GHz Adjust”
11974Q
50.0 GHz
“50.0 GHz Adjust”
11974U
60.0 GHz
“60.0 GHz Adjust”
11974V
75.0 GHz
“75.0 GHz Adjust”
8. Repeat steps 6 and 7 until the green LEDs are lit at both frequencies without additional
adjustments.
Chapter 3
81
Operation
Using an E4407B Spectrum Analyzer or 7405A EMC Analyzer
Band Selection
1. If necessary, configure the analyzer for preselected external mixing by pressing the
following keys:
Input/Output, Input Mixer (Ext), Mixer Config, Mixer Type (Presel)
2. If necessary, adjust the tracking of the Agilent 11974 to the analyzer being used for
preselected external mixing, by using the Frequency Tracking Calibration procedure
above.
3. Press the following keys to select the desired mixing band: (In this example, we will use
an Agilent 11974Q (33.0 to 50.0 GHz) to view a 40 GHz, -15 dBm signal.)
Input/Output, Input Mixer, Ext Mix Band, 33-50 GHz (Q)
Amplitude Calibration
1. Enter the conversion loss versus frequency data from one of three sources.
• From a Conversion Loss Data Disk, supplied with your mixer. See “Using a
Conversion-Loss Data Disk with the ESA or PSA Series Analyzers” on page 38.
• Data from the calibration sheet supplied with your mixer.
• From conversion-loss data located on the mixer body label. See “Manually Entering
Conversion-Loss Data” on page 84
Operation
2. To correct for the conversion-loss of the harmonic mixer in use, the analyzer amplitude
correction feature is used. Access this feature by pressing, Amplitude Y Scale, More,
Corrections. Select a correction set for use with external mixing. The recommended set
to use is Other although any available set could be used. Press Correction until On is
underlined.
82
Chapter 3
Operation
Using an E4407B Spectrum Analyzer or 7405A EMC Analyzer
3. The full Q band display is shown in Figure 3-9.
Figure 3-9.
4. To complete the amplitude calibration process, the preselector must be adjusted at each
frequency of interest. Before making final amplitude measurements with the analyzer,
perform the following:
a. Place a marker on the signal of interest.
b. Press SPAN, Span Zoom, 10, MHz to zoom in on the signal.
c. Press AMPLITUDE, Presel Center.
Operation
The final amplitude measurement can now be read out with the marker. See Figure
3-10..
Figure 3-10.
Chapter 3
83
Operation
Using an E4407B Spectrum Analyzer or 7405A EMC Analyzer
Manually Entering Conversion-Loss Data
1. Press AMPLITUDE Y Scale, More, Corrections. Select a correction set for use with external
mixing. The recommended set to use is Other although any available set could be used.
NOTE
To correct for the conversion-loss of the harmonic mixer in use, the analyzer
amplitude correction feature is used.
2. Press Edit to enter the appropriate conversion loss data for the mixer in use. These
values are listed on the mixer, or a calibration sheet that is supplied with the mixer.
More correction points entered across the band in use will improve frequency response
accuracy. Up to 200 points may be defined for each set.
Operation
3. Once the desired correction points are entered, press Return, Correction (On) to activate
correction set Other. This will also turn corrections on resulting in a calibrated display.
It is recommended that the correction set entered be saved on the internal memory or
the floppy drive for future reference. See the ESA User’s and Programmer’s Reference
guide for information on saving correction values.
84
Chapter 3
Operation
Using a PSA Series Spectrum Analyzer
Using a PSA Series Spectrum Analyzer
Preliminary Operation
Compatibility Reference
Refer to Chapter 2, “Installation,” on page 27 for information relating to retrofit
requirements for E4440A, E4446A, or E4448A analyzer.
NOTE
Option AYZ is required. The E4443A and E4445A do not support external
mixing.
Equipment Connection
Connect the equipment as shown in Figure 3-11. and use the following checklist to verify
the connections.
• 11974 LO IN to the LO OUTPUT of the PSA (SMA cable, 5061-5458)
• 11974 IF OUT to the IF INPUT of the PSA (SMA cable, 5061-5458)
• 11974 TUNE IN to the PRE-SEL TUNE OUT of the PSA (BNC cable, 8120-1839;
BNC f–f adapter, 1250-0080; BNC cable, 8120-2582)
• 11974 POWER SUPPLY to 11974-60028 PRESELECTOR POWER
Figure 3-11. 11974 Connections Using an E4440A, E4446A, or E4448A
Operation
Spectrum Analyzer
PRE-SEL TUNE
OUT
IF
INPUT
1st LO
OUTPUT
TUNE
IN
SMA Cable
SMA Cable
IF
OUT
Agilent 11974
Series Mixer
LO IN
RF Input
SIGNAL
SOURCE
POWER
SUPPLY
Preselector
Power
Power Supply
Chapter 3
premix5
85
Operation
Using a PSA Series Spectrum Analyzer
Frequency Tracking Calibration This procedure is used to align the frequency of the
preselector filter of the Agilent 11974 to the tuned frequency of the analyzer. This
procedure should be followed any time that the Agilent 11974 is connected to a different
analyzer. The calibration should be periodically checked.
1. Set the Agilent 11974 rear-panel switches “ESA/PSA/70907B” and “LEDS” to the ON
position, and the other two switches to the OFF position, in order for the Agilent 11974
to properly scale to the tune signal of the analyzer.
2. Configure the analyzer for a preselected external mixer by pressing the following keys:
Preset, Factory Preset (if present), Input/Output, Input Mixer, Input Mixer (Ext)
3. Set the desired band of operation. Press Ext Mix Band, A, Q, U, or V. (Note that only
A,Q,U, and V bands are available.)
4. Press, Mixer Config, Mixer Type (Presel).
5. Set the Presel Adjust to 0 MHz by pressing AMPLITUDE, Presel Adjust, 0, MHz.
6. Set the analyzer to zero span by pressing SPAN, Zero Span.
7. Set the analyzer center frequency by pressing FREQUENCY, Center Freq, and enter the
corresponding value for the appropriate mixer. (Refer to Table 3-6.) On the rear panel of
the Agilent 11974, adjust the corresponding potentiometer until one or both of the green
LEDs are lit.
Operation
Table 3-6.
Mixer
Agilent P/N
Analyzer Center
Frequency
Potentiometer
11974A
26.5 GHz
“26.5 GHz Adjust”
11974Q
33.0 GHz
“33.0 GHz Adjust”
11974U
40.0 GHz
“40.0 GHz Adjust”
11974V
50.0 GHz
“50.0 GHz Adjust”
8. Change the analyzer center frequency to the value indicated in Table 3-7. and again
adjust the corresponding potentiometer on the rear panel of the 11974 until one or both
of the green LEDs are lit.
Table 3-7.
Mixer
Agilent P/N
Analyzer Center
Frequency
Potentiometer
11974A
40.0 GHz
“40.0 GHz Adjust”
11974Q
50.0 GHz
“50.0 GHz Adjust”
11974U
60.0 GHz
“60.0 GHz Adjust”
11974V
75.0 GHz
“75.0 GHz Adjust”
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Chapter 3
Operation
Using a PSA Series Spectrum Analyzer
9. Repeat steps 7 and 8 until the green LEDs are lit at both frequencies without additional
adjustments.
Band Selection
1. If necessary, configure the analyzer for preselected external mixing by pressing the
following keys:
Input/Output, Input Mixer (Ext), Mixer Config, Mixer Type (Presel)
2. If necessary, adjust the tracking of the Agilent 11974 to the analyzer being used for
preselected external mixing, by using the Frequency Tracking Calibration procedure
above.
3. Press the following keys to select the desired mixing band: (In this example, we will use
an Agilent 11974Q (33.0 to 50.0 GHz) to view a 40 GHz, -15 dBm signal.)
Input/Output, Input Mixer, Ext Mix Band, 33-50 GHz (Q)
Amplitude Calibration
1. Enter the conversion loss versus frequency data from one of three sources.
• From a Conversion Loss Data Disk, supplied with your mixer. See “Using a
Conversion-Loss Data Disk with the ESA or PSA Series Analyzers” on page 38.
• Data from the calibration sheet supplied with your mixer.
• From conversion-loss data located on the mixer body label. See “Manually Entering
Conversion-Loss Data” on page 89
Chapter 3
87
Operation
2. To correct for the conversion-loss of the harmonic mixer in use, the analyzer amplitude
correction feature is used. Access this feature by pressing, Amplitude Y Scale, More,
Corrections. Select a correction set for use with external mixing. The recommended set
to use is Other although any available set could be used. Press Correction until On is
underlined.
Operation
Using a PSA Series Spectrum Analyzer
3. The full Q band display is shown in Figure 3-12.
Figure 3-12.
4. To complete the amplitude calibration process, the preselector must be adjusted at each
frequency of interest. Before making final amplitude measurements with the analyzer,
perform the following:
a. Place a marker on the signal of interest.
b. Press SPAN, Span Zoom, 10, MHz to zoom in on the signal.
Operation
c. Press AMPLITUDE, Presel Center.
The final amplitude measurement can now be read out with the marker. See Figure
3-13..
Figure 3-13.
88
Chapter 3
Operation
Using a PSA Series Spectrum Analyzer
Manually Entering Conversion-Loss Data
1. Press AMPLITUDE Y Scale, More, Corrections. Select a correction set for use with external
mixing. The recommended set to use is Other although any available set could be used.
NOTE
To correct for the conversion-loss of the harmonic mixer in use, the analyzer
amplitude correction feature is used.
2. Press Edit to enter the appropriate conversion loss data for the mixer in use. These
values are listed on the mixer, or a calibration sheet that is supplied with the mixer.
More correction points entered across the band in use will improve frequency response
accuracy. Up to 200 points may be defined for each set.
3. Once the desired correction points are entered, press Return, Correction (On) to activate
correction set Other. This will also turn corrections on resulting in a calibrated display.
It is recommended that the correction set entered be saved on the internal memory or
the floppy drive for future reference. See the PSA User’s and Programmer’s Reference
guide for information on saving correction values.
Operation
Chapter 3
89
Operation
Using 8561A/62A/62B Spectrum Analyzers
Using 8561A/62A/62B Spectrum Analyzers
Preliminary Operation
NOTE
For compatibility using an 8561A/62A/62B Spectrum Analyzer as a host to
the 11974, the appropriate Option K74 retrofit kit must be installed.
Equipment Connections
Connect the equipment as shown in Figure 3-14. on page 90 and use the following checklist
to verify the connections.
• 11974 LO IN to the analyzer 1ST LO OUTPUT (SMA, 5061-5458)
• 11974 IF OUT to the analyzer IF INPUT (SMA, 5061-5458)
• 11974 TUNE IN to the analyzer J11, PSEL TUNE (BNC cable, 8120-1839; BNC f-f
adapter, 1250-0080; BNC cable, 8120-2582)
• 11974 POWER SUPPLY to 11974-60028 PRESELECTOR POWER
Operation
Figure 3-14. 11974 Connections Using an 8561A/62A/62B
90
Chapter 3
Operation
Using 8561A/62A/62B Spectrum Analyzers
Frequency Tracking Calibration
Use this procedure to align the frequency of the 11974 tracking filter to the tuned
frequency of the spectrum analyzer. Follow this procedure anytime that the 11974 is
connected to a different spectrum analyzer. Periodically check the calibration.
1. Set the 11974 rear-panel switches 8563/61/60 and LEDS to the ON position, and the
other two switches to the OFF position, in order for the 11974 to properly scale the tune
ramp of the spectrum analyzer.
2. Enter the full-band selection mode by using the following key sequence:
EXT
FULL BAND
Use the ⇑ or ⇓ key until the desired band is reached.
3. Apply a frequency offset of 621.4 MHz by using the following key sequence:
FREQUENCY
OFFSET
Enter 621.4 and terminate with MHz. (An F should appear at the left side of the
display screen to indicate that an offset is applied.)
4. Set the spectrum analyzer to zero span by pressing SPAN ZERO SPAN.
NOTE
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings in unused state registers as indicated in step 5 and
step 7.
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
6. On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “26.5 GHz SET”
for an 11974Q: “33.0 GHz SET”
for an 11974U: “40.0 GHz SET”
for an 11974V: “50.0 GHz SET”
Chapter 3
91
Operation
5. Set the spectrum analyzer center frequency by pressing FREQUENCY CENTER FREQ and
entering the corresponding value for the mixer listed below, then save this setting in an
unused register.
Operation
Using 8561A/62A/62B Spectrum Analyzers
7. Change the spectrum analyzer center frequency to the value indicated below, then save
this setting in an unused register:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
8. On the rear-panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below until one or both of the green LEDs are lit.
for an 11974A: “40 GHz SET”
for an 11974Q: “50 GHz SET”
for an 11974U: “60 GHz SET”
for an 11974V: “75 GHz SET”
9. Repeat step 5 through step 8 until green lights are lit at both frequencies without any
additional adjustments.
Operation
Band Selection
Operation
1. If necessary, mate the 11974 to the spectrum analyzer being used for preselected
external mixing by using the Frequency Tracking Calibration procedure above.
2. Use the following key sequence to enter the external mixing mode and to select the
desired band of operation.
EXT
FULL BAND
Use the ⇑ or ⇓ key until the desired band is reached.
NOTE
The above band-selection key sequence must be used to enter the external
mixing band of operation. Do not enter in the center frequency of the band
directly.
3. Apply a frequency offset of 621.4 MHz by using the following key sequence:
FREQUENCY
OFFSET
Enter 621.4 and terminate with MHz. (An F should appear at the left side of the
display screen to indicate that an offset is applied.)
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Chapter 3
Operation
Using 8561A/62A/62B Spectrum Analyzers
Amplitude Calibration
Enter the conversion loss table at the preset frequencies from either the calibration label
on the bottom of the 11974 or the supplied calibration sheet, by using the following key
sequence. (Note: the analyzer automatically interpolates between the preset frequencies.)
EXT
AMPTD CORRECT
CNV LOSS VS FREQ
Enter the conversion loss value of the indicated preset frequency, then terminate the
entry with dB.
Advance to the next preset frequency by pressing ⇑ and enter the conversion loss of the
indicated frequency. Continue until the highest frequency is reached, then use the ⇑ and
⇓ keys to scan through the frequencies to verify or edit the conversion-loss values
entered.
NOTE
For V band, it may be necessary to first use the following key sequence to
initialize the average of the conversion loss versus frequency table near the
values for this band.
EXT
AMPTD CORRECT
AVERAGE CNV LOSS
Enter 47 and terminate with dB.
There is no PRESEL AUTO PK or PRESEL MAN ADJ softkey function for the 8561A/62A/62B,
when in the external mixing mode. Therefore, to maximize the amplitude of the desired
signal, use an adjustment tool to vary the corresponding low-frequency potentiometer
located on the rear panel. The low-frequency potentiometer for mixer bands are listed
below:
for an 11974A: “26.5 GHz SET”
for an 11974Q: “33.0 GHz SET”
for an 11974U: “40.0 GHz SET”
for an 11974V: “50.0 GHz SET”
Chapter 3
93
Operation
Preselector Peaking
Operation
Using 8561A/62A/62B Spectrum Analyzers
Sweep Time Considerations
For optimum amplitude accuracy, the sweep rate must be less than 40 MHz/ms, according
to the table below.
Table 3-8. Minimum Sweep Time
Frequency Span (GHz)
Minimum Sweep Time (ms)
25
625
20
500
17
425
15
375
13.5
338
10
250
5
125
<2
50
Operation
General Description of 8561A/62A/62B External-Mixing Functions
FULL BAND
allows you to select a commonly-used frequency band above 18 GHz.
These bands are shown in Table 3-9. on page 95. Use the step keys or
the knob to select a desired frequency band; the selected band
appears in the active function block. Activating FULL BAND also
activates the harmonic-lock function.
AMPTD CORRECT
displays a menu of functions that set conversion losses and flatness
data.
AVERAGE CNV LOSS
displays the mean conversion loss for the current harmonic and
allows you to enter new conversion loss data. In a full frequency band
(such as A band), the mean conversion loss is defined as the
minimum loss plus the maximum loss for that band divided by two.
To change the maximum and minimum values, use the
CNV LOSS VS FREQ softkey. Any change to the average conversion
loss also affects the flatness data, which is described below.
The default conversion loss value for each band is 30 dB.
displays the stored conversion loss for a specific frequency in the
current band. This allows amplitude correction to be entered to
compensate for changes in conversion loss with frequency. To enter a
new value, use the data keys. To change the displayed frequency, use
the step keys. Any changes to the data also affect the mean
conversion loss stored under AVERAGE CNV LOSS. Table 3-9. on
page 95 shows the number of flatness points for each band and the
default flatness values. To view the correction, connect a 310.7 MHz
signal of a known amplitude (approximately −30 dBm) to the IF
input and set the analyzer to sweep the associated band.
CNV LOSS VS FREQ
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Chapter 3
Operation
Using 8561A/62A/62B Spectrum Analyzers
Table 3-9. Flatness Points and Conversion Losses for Frequencies above 18 GHz
Frequency
Band
Frequency Range (GHz)
Number of
Flatness Points
Point
Spacing
Default
Conversion Loss
K
18.0 to 26.5
6
2 GHz
30 dB
A
26.5 to 40.0
8
2 GHz
30 dB
Q
33.0 to 50.0
7
3 GHz
30 dB
U
40.0 to 60.0
6
4 GHz
30 dB
V
50.0 to 75.0
6
5 GHz
30 dB
E
60.0 to 90.0
7
5 GHz
30 dB
W
75.0 to 110.0
8
5 GHz
30 dB
F
90.0 to 140.0
6
10 GHz
30 dB
D
110.0 to 170.0
7
10 GHz
30 dB
G
140.0 to 220.0
9
10 GHz
30 dB
Y
170.0 to 260.0
7
15 GHz
30 dB
J
220.0 to 325.0
8
15 GHz
30 dB
MARKER NORMAL
activates a single marker and places it at the center of the trace. This
softkey is also annotated as MARKER DELTA, if delta-marker mode
has been previously activated by the MARKER DELTA softkey under
the Marker menus.
The marker reads data from the currently active trace. (An active
trace is one that is in either the clear-write or max-hold mode; this
may be either trace A or trace B.) If both traces are active, or if both
traces are in view mode, the marker reads data from trace A.
PEAK SEARCH
places a marker on the highest point on a trace. The frequency and
amplitude of the marker are displayed in the upper-right corner of
the screen; PEAK SEARCH does not alter the active function.
Chapter 3
95
Operation
If one marker is already on, no operation takes place. If two markers
are on (as in MARKER DELTA mode), pressing MARKER DELTA deletes
the anchor marker and makes the active one the new, single marker.
The marker reads the amplitude and the frequency (or relative time,
when the frequency span equals 0 Hz), and displays these values in
the active function block and in the upper-right corner of the display.
To move the marker, use either the knob, the step keys, or the data
keys.
Operation
Operation
Using 8561A/62A/62B Spectrum Analyzers
96
Chapter 3
4 Performance Tests
Performance Tests
97
Performance Tests
Introduction
Introduction
This section contains instructions for testing the performance of the 11974 Series
Preselected Millimeter Mixers. Performance tests are used to check the mixers at incoming
inspection and for periodic evaluation. The tests verify the specifications listed for the
11974 Series in Table 1-1 on page 15.
Test equipment required for the performance tests is listed in the following tables:
11974A—Table 4-1 on page 101,
11974Q—Table 4-2 on page 102,
11974U—Table 4-3 on page 103,
11974V—Table 4-4 on page 104.
Performance Tests
You may use test instruments other than those listed, provided their performance equals
or exceeds the critical specifications in these tables.
98
Chapter 4
Performance Tests
Test Record Summary
Test Record Summary
The performance test record summary (Table 4-6 on page 135), which is used for recording
and summarizing the performance test data, at the end of this chapter. The test record
summary includes the measurement uncertainty for each band, calculated as the root sum
square of the error terms. A test record summary has been provided for each band,
therefore use the appropriate pages in Table 4-6 for your band.
Data tables (Table 4-7 on page 140, Table 4-8 on page 143, Table 4-9 on page 144,
Table 4-10 on page 146, and Table 4-11 on page 146) immediately follow the performance
test record summary. Make copies of these tables and use them as worksheets when
performing the tests. The data tables can then be used to summarize the results for the
performance test record summary.
Performance Tests
Chapter 4
99
Performance Tests
Performance Test Procedures
Performance Test Procedures
Each performance test is contained in a single paragraph. All specifications for the
parameters being measured are described in Table 1-1 on page 15. This is followed by a
general description of the test and any special instructions or problem areas. Appropriate
test setup illustrations are included in this section and are referenced in the test
procedures.
NOTE
The performance test procedures must be performed in the order that they
appear.
“1. Conversion Loss” on page 109
“2. Image Rejection Test” on page 114
“3. Multiple Response Rejection Test” on page 118
“4. Displayed Average Noise Level” on page 126
Performance Tests
“5. 3 dB Bandwidth” on page 130
100
Chapter 4
Performance Tests
Performance Test Procedures
Table 4-1 Recommended Test Equipment for 11974A
Instrument
Critical Specifications
Recommended
Model
Spectrum Analyzer
LO and IF ranges compatible with 11974A
8566B
SWEEP + TUNE voltage compatible with
11974A.
w/serial prefix 2948
or later
Frequency: 13.25 to 20 GHz
8340Ba
Synthesized Sweeper
External leveling capability
Sub harmonics and multiples thereof: <−25 dBc
Amplifier
Frequency Range: 3 to 5 GHz
11975A
Output Level: +16 dBm leveled
Amplifier
15 dB gain from 13.25 to 20 GHz
8349B
Compatible with mm-wave source module
Non-harmonic spurious: <−50 dBc
Power Meter
Compatible with thermistor mount
432A
Thermistor Mount
SWR: <2.0 from 26.5 to 40 GHz
R486A
Power Sensor
SWR: <1.2 at 5 GHz
8481A
Power Meter
Compatible with power sensor
436A
Directional Coupler
Coupling: 10 dB
R752CS
Directivity: >40 dB
Primary line SWR: 1.04
Auxiliary arm SWR: 1.05
Isolator
Insertion Loss: <1.5 dB
R365A
Isolation: >25 dB
SWR: <1.4
Millimeter-Wave
Output power: +2 dBm leveled
Source Module
83554A
Output SWR: <2.0
Harmonically related spurious signals: <−20 dBc
Waveguide Straights
5 cm minimum
R896B
Performance Tests
SWR: <1.016
a. If an 8340A is used, the 1.0 V/GHz output will have to be modified to a 0.5
V/GHz output for proper display accuracy, leveling flatness, and harmonic suppression. Provided with your mm-wave source module is a set of modification
instructions. This modification procedure will enable you to properly convert
your 8340A to a 0.5 V/GHz output.
Chapter 4
101
Performance Tests
Performance Test Procedures
Table 4-2 Recommended Test Equipment for 11974Q
Instrument
Critical Specifications
Recommended
Model
Spectrum Analyzer
LO and IF ranges compatible with 11974Q
8566B
SWEEP + TUNE voltage compatible with
11974Q.
w/serial prefix 2948
or later
Frequency: 11 to 17 GHz
8340Ba
Synthesized Sweeper
External leveling capability
Sub harmonics and multiples thereof: <−25 dBc
Amplifier
Frequency Range: 3 to 5 GHz
11975A
Output level: +16 dBm leveled
Amplifier
15 dB gain from 11 to 17 GHz
8349B
Compatible with mm-wave source module
Non-harmonic spurious: <−50 dBc
Power Meter
Compatible with thermistor mount
432A
Thermistor Mount
SWR: <2.0 from 33 to 50 GHz
Hughes
45772H-1100
Power Sensor
SWR: <1.2 at 5 GHz
8481A
Power Meter
Compatible with power sensor
436A
Directional Coupler
Coupling: 10 dB
Q752C
Directivity: >40 dB
Primary line SWR: <1.05
Auxiliary arm SWR: <1.1
Isolator
Insertion Loss: <1.6 dB
Q365A
Isolation: >25 dB
SWR: <1.4
Millimeter-Wave
Output power: +2 dBm leveled
Source Module
83555A
Output SWR: <2.0
Performance Tests
Harmonically related spurious signals: <−20 dBc
Waveguide Straights
5 cm minimum
Q896B
SWR: <1.016
a. If an 8340A is used, the 1.0 V/GHz output will have to be modified to a
0.5 V/GHz output for proper display accuracy, leveling flatness, and harmonic
suppression. Provided with your mm-wave source module is a set of modification
instructions. This modification procedure will enable you to properly convert
your 8340A to a 0.5 V/GHz output.
102
Chapter 4
Performance Tests
Performance Test Procedures
Table 4-3 Recommended Test Equipment for 11974U
Instrument
Critical Specifications
Recommended
Model
Spectrum Analyzer
LO and IF ranges compatible with 11974U
8566B
SWEEP + TUNE voltage compatible with
11974U.
w/serial prefix 2948
or later
Frequency: 13 to 20 GHz
8340Ba
Synthesized Sweeper
External leveling capability
Sub harmonics and multiples thereof: <−25 dBc
Amplifier
Frequency Range: 4 to 6 GHz
11975A
Output Level: +16 dBm leveled
Amplifier
15 dB gain from 13 to 20 GHz
8349B
Compatible with mm-wave source module
Non-harmonic spurious: <−50 dBc
Power Meter
Compatible with thermistor mount
432A
Thermistor mount
SWR: <2.0 from 40 to 60 GHz
Hughes
45773H-1100
Power Sensor
SWR: <1.2 at 5 GHz
8481A
Power Meter
Compatible with power sensor
436A
Directional Coupler
Coupling: 10 dB
U752C
Directivity: >39 dB
Primary line SWR: 1.06
Auxiliary arm SWR: 1.1
Isolator
Insertion Loss: <1.8 dB
U365A
Isolation: >25 dB
SWR: <1.4
Millimeter-Wave
Output power: +2 dBm leveled
Source Module
83556A
Output SWR: <2.0
Harmonically related spurious signals: <−20 dBc
5 cm minimum
U896B
Performance Tests
Waveguide Straights
SWR: <1.016
a. If an 8340A is used, the 1.0 V/GHz output will have to be modified to a 0.5 V/GHz
output for proper display accuracy, leveling flatness, and harmonic suppression.
Provided with your mm-wave source module is a set of modification instructions.
This modification procedure will enable you to properly convert your 8340A to a
0.5 V/GHz output.
Chapter 4
103
Performance Tests
Performance Test Procedures
Table 4-4 Recommended Test Equipment for 11974V
Instrument
Critical Specifications
Recommended
Model
Spectrum Analyzer
LO and IF ranges compatible with 11974V
8566B
SWEEP + TUNE voltage compatible with
11974V.
w/serial prefix 2948
or later
Frequency: 12.5 to 19 GHz
8341B
Option 003
Synthesized Sweeper
External leveling capability
Sub harmonics and multiples thereof: <−25 dBc
Amplifier
Frequency Range: 4 to 6 GHz
11975A
Output level: +16 dBm leveled
Amplifier
15 dB gain from 13 to 20 GHz
8349B
Compatible with mm-wave source module
Non-harmonic spurious: <−50 dBc
Power Meter
Compatible with thermistor mount
432A
Thermistor Mount
SWR: <2.0 from 50 to 75 GHz
Hughes
45774H-1100
Power Sensor
SWR: <1.2 at 5 GHz
8481A
Power Meter
Compatible with power sensor
436A
Directional Coupler
Coupling: 10 dB
V752C
Directivity: >36 dB
Primary line SWR: 1.08
Auxiliary arm SWR: 1.14
Isolator
Insertion Loss: <2.0 dB
V365A
Isolation: >25 dB
SWR: <1.5
Millimeter-Wave
Source Module
Output power: +2 dBm leveled
83557A
Output SWR: <2.0
Performance Tests
Harmonically related spurious signals: <−20 dBc
Waveguide Straights
5 cm minimum
V896B
SWR: <1.02
104
Chapter 4
Performance Tests
Performance Test Procedures
Table 4-5 Recommended Accessories for All Bands
Accessory
Critical Specifications
Recommended
Model
Adapter (1 required)
SMA (f) to Type N (f)
1250-1772
Adapter (1 required)
Type N (m) to APC 3.5 (f)
1250-1744
Cables (3 required)
Connectors: SMA (m)
5061-5458
Cable (1 required)
Connectors: APC 3.5 (m)
11500E
Cables (5 required)
Connectors: BNC (m)
10503A
Performance Tests
Chapter 4
105
Performance Tests
Performance Test Procedures
Performance Tests
Figure 4-1 Performance Tests Setup
106
Chapter 4
Performance Tests
Frequency Tracking Calibration with an 8566B Spectrum Analyzer
Frequency Tracking Calibration with an 8566B Spectrum
Analyzer
In order for the 8566B to be compatible with the 11974 Series Preselected
Millimeter Mixer, it must have a serial prefix of 2948 or later. If not, retrofit
kit 8566B K74 must be installed before using an 8566B for the testing of the
11974.
NOTE
1. Connect the IF OUT of the 11974 to the IF INPUT of the spectrum analyzer, the
spectrum analyzer 1ST LO OUTPUT to the INPUT of the 11975A Amplifier, and the
11975A Amplifier OUTPUT to the LO IN of the 11974.
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
2. Connect the SWEEP + TUNE OUT of the spectrum analyzer to the TUNE IN of the
11974.
3. Set the 11974 rear-panel switches 8566B and LEDS to the ON position, and the
8563A/61B/60A and 70907B switches to the OFF position, for the 11974 to properly scale
the tune ramp of the analyzer.
4. Set the spectrum analyzer to the correct millimeter band using the following key
sequence for the appropriate mixer:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
5. On the spectrum analyzer, set the preselector DAC to 32 (the center of its 0–63 range)
by pressing SHIFT GHz 32 Hz.
6. Set the spectrum analyzer to a frequency span of 0 Hz by pressing
FREQUENCY SPAN 0 Hz.
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings as indicated in step 7 and step 9 in unused state
registers.
Chapter 4
107
Performance Tests
NOTE
Performance Tests
Frequency Tracking Calibration with an 8566B Spectrum Analyzer
7. Set the spectrum analyzer center frequency to the low end of the band by pressing
CENTER FREQUENCY and entering the corresponding value for the mixer listed below.
Save this setting in an unused register.
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
8. On the rear panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below, until one or both of the green LEDs are lit.
for an 11974A: “26.5 GHz Set”
for an 11974Q: “33.0 GHz Set”
for an 11974U: “40.0 GHz Set”
for an 11974V: “50.0 GHz Set”
9. Change the spectrum analyzer center frequency to the high end of the band as indicated
below, then save this setting in an unused register:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
10.On the rear panel of the 11974, adjust the corresponding potentiometer for the mixer
listed below, until one or both of the green LEDs are lit.
for an 11974A: “40 GHz Set”
for an 11974Q: “50 GHz Set”
for an 11974U: “60 GHz Set”
for an 11974V: “75 GHz Set”
11.Repeat step 7 through step 10 until the green LEDs are lit at both frequencies without
additional adjustments.
Performance Tests
NOTE
Upon completion of this adjustment procedure, and before taking data, use
the spectrum analyzer preselector-peak function to peak the 11974 filter on
signals to be measured.
108
Chapter 4
Performance Tests
1. Conversion Loss
1. Conversion Loss
Description
The conversion loss is checked at a nominal local-oscillator power level. A known input
power is applied to the input of the 11974. The IF output power is measured on an 8566B
Spectrum Analyzer. From the measurements, the conversion loss is calculated. The
calibration factors versus frequency of the millimeter-wave power-meter sensor and the
coupling factors versus frequency of the coupler are needed in this measurement.
Procedure
1. Connect an SMA cable from the 1ST LO OUTPUT of the spectrum analyzer to the
INPUT of the 11975A Amplifier. Connect a second SMA cable to the OUTPUT of the
amplifier.
2. Connect the 8481A Power Sensor to the power-meter sensor cable, then zero and
calibrate the 436A Power Meter.
3. Set the spectrum analyzer controls as follows:
SHIFT ⇑ ⇑ ⇑ ⇑ (selects U Band)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
CENTER FREQUENCY (sets the LO frequency to 5.0 GHz) . . . . . . . 50.3 GHz
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON. Connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier listed in step 1. Set the 436A Power-Meter Cal Factor % to the appropriate
value for a frequency of 5 GHz.
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm ±0.1 dBm on
the power meter.
6. Set the 432A Power Meter Cal Factor % to 100 percent.
Chapter 4
Performance Tests
7. Connect the equipment as shown in Figure 4-1 on page 106.
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1. Conversion Loss
CAUTION
Turn off the ac power on the 8349B Amplifier prior to connecting or
disconnecting the source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply when
either connecting or disconnecting the 11974 from it.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
8. Turn off the RF power on the synthesized sweeper and zero the 432A Power Meter.
9. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing SHIFT START FREQ and then press the
following keys (on the synthesized sweeper) for the appropriate band listed below:
for an 11974A: 2 Hz
for an 11974Q: 3 Hz
for an 11974U: 3 Hz
for an 11974V: 4 Hz
10.Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
11.Set the synthesized sweeper frequency step to 500 MHz by pressing SHIFT CF 500 MHz.
12.Activate external leveling on the synthesized sweeper by pressing XTAL.
13.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
14.Set the spectrum analyzer to the appropriate millimeter band by using the appropriate
key sequence listed below:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
Performance Tests
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
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1. Conversion Loss
15.Set the spectrum analyzer controls as follows:
SHIFT, 5, MHz, 0, and dB (sets external mixer conversion loss to 0 dB)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MHz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 dB
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 MHz
16.Set the reference level of the spectrum analyzer by pressing REFERENCE LEVEL and
entering the corresponding value for the appropriate band listed below:
for an 11974A: −40 dBm
for an 11974Q: −40 dBm
for an 11974U: −40 dBm
for an 11974V: −55 dBm
17.Set the center frequency of the spectrum analyzer by pressing CENTER FREQUENCY and
entering the corresponding value for the appropriate band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
18.On the spectrum analyzer, press MARKER PEAK SEARCH and PRESEL PEAK.
19.Record the following values in Table 4-7 on page 140.
Marker Frequency
Marker Amplitude
Power Meter Reading
Cal Factor % or Correction Factor (dB)
Directional Coupler Coupling Factor
NOTE
For the purpose of this measurement, the directional coupler coupling factor
is defined as the ratio of the power at the output flange to the power at the
coupled flange.
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1. Conversion Loss
20.Calculate the conversion loss (CL) of the 11974 with the equations given below.
If the power meter calibration factor is given in % or decimal form, for example, 93% or
0.93, then:
CL = Power Meter Reading − 10 × log (Cal Factor) − SA Marker Amplitude − Coupling Factor
If the power meter correction factor is given in dB, then:
CL = Pwr Mtr Reading + Pwr Mtr Correction Factor − SA Marker Amplitude − Coupling Factor
For Example:
Power Meter Reading =
−0.03 dBm
Cal Factor =
94.8%
or
Correction Factor =
0.23 dB
Spectrum Analyzer Reading =
−44.78 dBm
Coupling Factor =
8.93 dB
then:
Conversion Loss = (−0.03) − 10 × log(.948) − (−44.78 dBm) −8.93 dB = 36.05 dB
or
Conversion Loss = (−0.03) + (0.23 dB) − (−44.78 dBm) −8.93 dB = 36.05 dB.
Record the conversion loss in Table 4-7 on page 140.
NOTE
The conversion loss indicated on the 11974 calibration label includes the loss
in the IF cable. If another cable other than the specified cable is used, then
the loss in that cable must be compensated for when making amplitude
measurements.
21.Increase the frequency of the synthesized sweeper 500 MHz by pressing CW ⇑.
Performance Tests
22.Turn off the RF power on the synthesized sweeper by pressing RF and zero the 432A
Power Meter, then turn the synthesized sweeper RF power back on again.
23.On the spectrum analyzer, press CENTER FREQUENCY ⇑ to increase the spectrum
analyzer frequency.
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24.On the spectrum analyzer, press MARKER PEAK SEARCH and PRESEL PEAK.
25.Repeat step 19 through step 24 until data has been recorded for the appropriate
maximum frequency listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
26.Record the Maximum Conversion Loss in Table 4-7 on page 140.
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Performance Tests
2. Image Rejection Test
2. Image Rejection Test
Description
The image rejection is checked at an LO power level of +15.2 dBm. A known input power is
applied to the input of the mixer. The IF output power is measured on an 8566B Spectrum
Analyzer at the input signal frequency and at the image response frequency. From the
measurements, the image rejection is determined. The image response appears on the
spectrum analyzer at a frequency of two times the IF frequency higher than the actual
signal frequency. In the case of the 8566B, the image response appears 642.8 MHz above
the actual frequency of the signal.
Procedure
1. Connect an SMA cable from the 1ST LO OUTPUT of the spectrum analyzer to the
INPUT of the 11975A Amplifier. Connect a second SMA cable to the OUTPUT of the
amplifier.
2. Connect the 8481A Power Sensor to the power meter sensor cable, then zero and
calibrate the 436A Power Meter.
3. Set the spectrum analyzer controls as follows:
SHIFT ⇑ ⇑ ⇑ ⇑ (selects U Band)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
CENTER FREQUENCY (sets LO frequency to 5.0 GHz) . . . . . . . . . 50.3 GHz
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON, then connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier. Set the 436A Power Meter Cal Factor % to the appropriate value for a
frequency of 5 GHz.
Performance Tests
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm ±0.1 dBm on
the power meter.
6. Connect the equipment as shown in Figure 4-1 on page 106.
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2. Image Rejection Test
CAUTION
Turn off the ac power on the 8349B prior to connecting or disconnecting the
source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply prior to
connecting or disconnecting the 11974.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to it.
7. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing SHIFT and START FREQ and entering the
corresponding value for the band listed below:
for an 11974A: 2 Hz
for an 11974Q: 3 Hz
for an 11974U: 3 Hz
for an 11974V: 4 Hz
8. Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
9. Set the synthesized sweeper frequency step to 500 MHz by pressing SHIFT, CF, 500, and
MHz.
10.Activate external leveling on the synthesized sweeper by pressing XTAL.
11.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
12.Set the spectrum analyzer to the appropriate millimeter band using the following keys:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
Performance Tests
13.Set the spectrum analyzer controls as follows:
SHIFT, 5, MHz, 0, and dB (sets external mixer conversion loss to 0 dB)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 kHz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB
CF STEP SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642.8 MHz
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14.Set the spectrum analyzer reference level by pressing REFERENCE LEVEL and entering
the corresponding value for the band listed below:
for an 11974A: −40 dBm
for an 11974Q: −40 dBm
for an 11974U: −40 dBm
for an 11974V: −55 dBm
15.Set the spectrum analyzer center frequency by pressing CENTER FREQUENCY and
entering the corresponding value for the band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
16.On the spectrum analyzer, press the following keys:
MARKER NORMAL
PEAK SEARCH
PRESEL PEAK
17.When the preselector-peak routine is complete, press PEAK SEARCH.
18.Record the marker frequency in Table 4-8 on page 143.
19.On the spectrum analyzer, press MARKER ∆.
20.On the spectrum analyzer, press CENTER FREQUENCY and use the ⇑ key to tune to the
image response. Press PEAK SEARCH to place the delta marker at the top of the image
response. The absolute value of the delta marker amplitude is the Image Rejection.
NOTE
If the signal is buried in the noise floor, reduce the video bandwidth to 100 Hz
to help identify the signal. At some frequencies, however, instrument
performance is so good that an image response may not be visible.
21.Record the Image Rejection in Table 4-8 on page 143.
Performance Tests
22.On the synthesized sweeper, press CW and ⇑ to increase the frequency of the
synthesized sweeper 500 MHz higher.
23.On the spectrum analyzer, set the CENTER FREQUENCY to match the output frequency
of the signal source.
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2. Image Rejection Test
24.Repeat step 16 through step 23 until data has been recorded for the appropriate
maximum frequency listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
25.Record the Minimum Image Rejection value in Table 4-8 on page 143.
NOTE
For the 11974V, record the Minimum Image Rejection in each portion of the
band.
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3. Multiple Response Rejection Test
3. Multiple Response Rejection Test
Description
The multiple response rejection is checked at an LO power level of +15.2 dBm. A known
input power is applied to the input of the mixer. The IF output power is measured on
an 8566B Spectrum Analyzer at the input signal frequency and at the multiple response
frequencies. From the measurements, the multiple response rejection is determined. For
each mixer, the spectrum analyzer/mixer combination is calibrated in frequency and
amplitude for mixing with a certain harmonic of the local oscillator. Multiple responses are
a result of the RF input’s mixing with a harmonic of the local oscillator other than the
harmonic that the spectrum analyzer is calibrated for. The multiple responses appear on
the spectrum analyzer at frequencies described by the following equation:
n
n′ ± n
f′ RF = f RF  ---- + f IF  ----------- GHz
 n′
 n′ 
where n represents the harmonic number for calibrated operation, as listed below.
for an 11974A: 8
for an 11974Q: 10
for an 11974U: 10
for an 11974V: 14
and n′ = Harmonic number producing unwanted multiple responses. The harmonics that
produce the highest level multiple responses tend to be n′ = n + 2 and n′ = n − 2. For
example, for the 11974U, these would be n′ = 8 and n′ = 12. This test measures the rejection
of multiple responses caused by n′ = n − 2 and n′ = n + 2 for signals at the lowest, middle,
and highest frequencies of each band.
Procedure
1. Connect an SMA cable from the 1ST LO OUTPUT of the spectrum analyzer to the
INPUT of the 11975A Amplifier. Connect a second SMA cable to the OUTPUT of the
amplifier.
Performance Tests
2. Connect the 8481A Power Sensor to the 436A Power Meter sensor cable, then zero and
calibrate the 436A Power Meter.
3. Set the spectrum analyzer controls as follows:
SHIFT ⇑ ⇑ ⇑ ⇑ (selects U Band)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
CENTER FREQUENCY (sets LO frequency to 5.0 GHz) . . . . . . . . . 50.3 GHz
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CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON, then connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier. Set the 436A Power Meter Cal Factor % to the appropriate value for a
frequency of 5 GHz.
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm ±0.1 dBm on
the power meter.
6. Connect the equipment as shown in Figure 4-1 on page 106.
CAUTION
Turn off the ac power on the 8349B prior to connecting or disconnecting the
source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply prior to
connecting or disconnecting the 11974.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
7. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing SHIFT and START FREQ and entering the
corresponding value for the band listed below:
for an 11974A: 2 Hz
for an 11974Q: 3 Hz
for an 11974U: 3 Hz
for an 11974V: 4 Hz
8. Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
Performance Tests
9. Activate external leveling on the synthesized sweeper by pressing XTAL.
10.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
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11.Set the spectrum analyzer to the appropriate millimeter band by using the following
key sequence:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
12.Set the spectrum analyzer controls as follows:
SHIFT, 5, MHz, 0, and dB (sets external mixer conversion loss to 0 dB)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 kHz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB
13.Set the spectrum analyzer reference level by pressing REFERENCE LEVEL and entering
the corresponding value for the band listed below:
for an 11974A: −40 dBm
for an 11974Q: −40 dBm
for an 11974U: −40 dBm
for an 11974V: −55 dBm
14.Set the spectrum analyzer center frequency by pressing CENTER FREQUENCY and
entering the corresponding value for the band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
15.On the spectrum analyzer, press the following keys:
MARKER NORMAL
PEAK SEARCH
PRESEL PEAK
16.When the preselector-peak routine is complete, press PEAK SEARCH.
Performance Tests
17.Record the marker frequency in Table 4-9 on page 144 as Signal Frequency #1.
18.On the spectrum analyzer, press MARKER ∆.
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19.On the spectrum analyzer, press CENTER FREQUENCY and tune to a multiple response
by entering the frequency value for the corresponding band listed below:
for an 11974A: 35.226200 GHz (n′ = 6+)
for an 11974Q: 41.169650 GHz (n′ = 8+)
for an 11974U: 49.919650 GHz (n′ = 8+)
for an 11974V: 58.279767 GHz (n′ = 12+)
20.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#1. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
NOTE
If the signal is buried in the noise floor, reduce the video bandwidth to 100 Hz
to help identify the signal. At some frequencies, however, instrument
performance is so good that an image response may not be visible.
21.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #1.
22.On the spectrum analyzer, press CENTER FREQUENCY and tune to the next multiple
response by entering the frequency value for the corresponding band listed below:
for an 11974A: 36.083269 GHz (n′ = 6−)
for an 11974Q: 41.973150 GHz (n′ = 8−)
for an 11974U: 50.723150 GHz (n′ = 8−)
for an 11974V: 59.029700 GHz (n′ = 12−)
23.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#2. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
24.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #2.
25.Set the synthesized sweeper for a CW signal at the frequency listed below for the
corresponding band:
for an 11974A: 33.25 GHz
Performance Tests
for an 11974Q: 41.50 GHz
for an 11974U: 50.00 GHz
for an 11974V: 62.50 GHz
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26.On the spectrum analyzer, press CENTER FREQUENCY and tune to the frequency listed
below for the corresponding band:
for an 11974A: 33.25 GHz
for an 11974Q: 41.50 GHz
for an 11974U: 50.00 GHz
for an 11974V: 62.50 GHz
27.On the spectrum analyzer, press the following keys:
MARKER NORMAL
PEAK SEARCH
PRESEL PEAK
28.When the preselector-peak routine is complete, press PEAK SEARCH.
29.Record the marker frequency in Table 4-9 on page 144 as Signal Frequency #2.
30.On the spectrum analyzer, press MARKER ∆.
31.On the spectrum analyzer, press CENTER FREQUENCY and tune to a multiple response
by entering the frequency value for the corresponding band listed below:
for an 11974A: 26.664280 GHz (n′ = 10+)
for an 11974Q: 34.636900 GHz (n′ = 12+)
for an 11974U: 41.720233 GHz (n′ = 12+)
for an 11974V: 65.665175 GHz (n′ = 16+)
32.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#3. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
33.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #3.
34.On the spectrum analyzer, press CENTER FREQUENCY and tune to the next multiple
response by entering the frequency value for the corresponding band listed below:
for an 11974A: 27.178520 GHz (n′ = 10−)
Performance Tests
for an 11974Q: 35.172567 GHz (n′ = 12−)
for an 11974U: 42.255900 GHz (n′ = 12−)
for an 11974V: 55.290125 GHz (n′ = 16−)
35.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#4. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
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3. Multiple Response Rejection Test
36.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #4.
37.On the spectrum analyzer, press CENTER FREQUENCY and tune to the next multiple
response by entering the frequency value for the corresponding band listed below:
for an 11974A: Response not in band. Skip to step 40.
for an 11974Q: Response not in band. Skip to step 40.
for an 11974U: Response not in band. Skip to step 40.
for an 11974V: 72.863100 GHz (n′ = 12+)
38.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#5. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
39.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #5.
40.On the spectrum analyzer, press CENTER FREQUENCY and tune to the next multiple
response by entering the frequency value for the corresponding mixer listed below:
for an 11974A: Response not in band. Skip to step 43.
for an 11974Q: Response not in band. Skip to step 43.
for an 11974U: Response not in band. Skip to step 43.
for an 11974V: 73.613033 GHz (n′ = 12−)
41.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#6. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
42.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #6.
43.Set the synthesized sweeper for a CW signal at the frequency listed below for the
corresponding band:
for an 11974A: 40.00 GHz
for an 11974Q: 50.00 GHz
for an 11974U: 60.00 GHz
for an 11974V: 75.00 GHz
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44.On the spectrum analyzer, press CENTER FREQUENCY and tune to the frequency for the
corresponding band listed below:
for an 11974A: 40.00 GHz
for an 11974Q: 50.00 GHz
for an 11974U: 60.00 GHz
for an 11974V: 75.00 GHz
45.On the spectrum analyzer, press the following keys:
MARKER NORMAL
PEAK SEARCH
PRESEL PEAK
46.When the preselector-peak routine is complete, press PEAK SEARCH.
47.Record the marker frequency in Table 4-9 on page 144 as Signal Frequency #3.
48.On the spectrum analyzer, press MARKER ∆.
49.On the spectrum analyzer, press CENTER FREQUENCY and tune to a multiple response
by entering the frequency value for the corresponding band listed below:
for an 11974A: 32.064280 GHz (n′ = 10+)
for an 11974Q: 41.720233 GHz (n′ = 12+)
for an 11974U: 50.053567 GHz (n′ = 12+)
for an 11974V: 65.665175 GHz (n′ = 16+)
50.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#7. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
51.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #7.
52.On the spectrum analyzer, press CENTER FREQUENCY and tune to the next multiple
response by entering the frequency value for the corresponding band listed below:
for an 11974A: 32.578520 GHz (n′ = 10−)
Performance Tests
for an 11974Q: 42.255900 GHz (n′ = 12−)
for an 11974U: 50.589233 GHz (n′ = 12−)
for an 11974V: 66.227625 GHz (n′ = 16−)
53.Record the above frequency in Table 4-9 on page 144 as Multiple Response Frequency
#8. Press PEAK SEARCH to place the delta marker at the top of the multiple response.
The absolute value of the delta marker amplitude is the multiple response rejection.
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54.Record the multiple response rejection in Table 4-9 on page 144 as Multiple Response
Rejection #8.
55.Record the Minimum Multiple Response Rejection in Table 4-9 on page 144.
NOTE
For the 11974V, record the Minimum Multiple Response Rejection for signal
frequencies in each portion of the band.
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Performance Tests
4. Displayed Average Noise Level
4. Displayed Average Noise Level
Description
The displayed average noise level is checked at three frequencies with an LO power level of
+15.2 dBm. The RF source is turned off and, at each frequency, the conversion loss
measured in the Conversion Loss Test is entered into the spectrum analyzer. The spectrum
analyzer is put in zero span and the average noise level is measured. The displayed
average noise level is measured at the lowest and highest frequency in the band, as well as
the frequency at which the mixer has the maximum conversion loss.
Procedure
1. Connect an SMA cable from the 1ST LO OUTPUT of the spectrum analyzer to the
INPUT of the 11975A Amplifier. Connect a second SMA cable to the OUTPUT of the
amplifier.
2. Connect the 8481A Power Sensor to the 436A Power Meter sensor cable, then zero and
calibrate the 436A Power Meter.
3. Set the spectrum analyzer controls as follows:
SHIFT ⇑ ⇑ ⇑ ⇑ (selects U Band)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
CENTER FREQUENCY (sets the LO frequency to 5.0 GHz) . . . . . . 50.3 GHz
CAUTION
When you are using an 11975 Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON, then connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier. Set the 436A Power Meter Cal Factor % to the appropriate value for a
frequency of 5 GHz.
Performance Tests
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm ±0.1 dBm on
the power meter.
6. Connect the equipment as shown in Figure 4-1 on page 106. Turn off the 8349B
Amplifier and the RF power on the synthesized sweeper. They will remain off for this
entire test.
126
Chapter 4
Performance Tests
4. Displayed Average Noise Level
CAUTION
Turn off the ac power on the 11974-60028 Preselector Power Supply prior to
connecting or disconnecting it from the 11974.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
7. Set the spectrum analyzer to the appropriate millimeter band by using the following
controls:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
8. Set the spectrum analyzer controls as follows:
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Hz
VIDEO BW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Hz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 dB
9. Set the spectrum analyzer center frequency by pressing CENTER FREQUENCY and
entering the corresponding frequency value for the band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
10.Set the conversion loss to the value recorded for this frequency in Table 4-7 on page 140
by pressing SHIFT, 5, and MHz, and entering the conversion loss value from Table 4-7 on
page 140. Press dB to terminate the entry. Record this value in Table 4-10 on page 146.
11.Set the spectrum analyzer reference level by pressing REFERENCE LEVEL and entering
the corresponding value for the band listed below:
for an 11974A: −80 dBm
for an 11974Q: −80 dBm
Performance Tests
for an 11974U: −80 dBm
for an 11974V: −80 dBm
12.On the spectrum analyzer, press SHIFT, VIDEO BW, 10, and Hz to activate the video
average function to average 10 traces.
13.After the video average counter reaches 10, press MARKER NORMAL and
PEAKSEARCH. The marker amplitude is the displayed average noise level.
Chapter 4
127
Performance Tests
4. Displayed Average Noise Level
14.Record the following in Table 4-10 on page 146.
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
15.On the spectrum analyzer, press SHIFT and SWEEP TIME to turn off the video average
function.
16.On the spectrum analyzer, press CENTER FREQUENCY and enter the corresponding
value for the band listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
17.Set the conversion loss to the value recorded for this frequency in Table 4-7 on page 140.
Press SHIFT, 5, and MHz, then enter the conversion loss value from Table 4-7 on
page 140. Press dB to terminate the entry. Record this value in Table 4-10 on page 146.
18.On the spectrum analyzer, press SHIFT, VIDEO BW, 10, and Hz to activate the video
average function to average 10 traces.
19.After the video average counter reaches 10, press MARKER NORMAL and
PEAK SEARCH. The marker amplitude is the displayed average noise level.
20.Record the following in Table 4-10 on page 146.
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
21.On the spectrum analyzer, press SHIFT SWEEP TIME to turn off the video average
function.
22.On the spectrum analyzer, press CENTER FREQUENCY and enter the frequency
corresponding to the maximum conversion loss measured in Table 4-7 on page 140.
23.Set the conversion loss to the value recorded for this frequency in Table 4-7 on page 140.
Press SHIFT 5 MHz, then enter the conversion loss value from Table 4-7 on page 140.
Press dB to terminate the entry. Record this value in Table 4-10 on page 146.
Performance Tests
24.On the spectrum analyzer, press SHIFT, VIDEO BW, 10, and Hz to activate the video
average function to average 10 traces.
25.After the video average counter reaches 10, press MARKER NORMAL and
PEAK SEARCH. The marker amplitude is the displayed average noise level.
26.Record the following in Table 4-10 on page 146.
Center Frequency
Displayed Average Noise Level (Marker Amplitude)
128
Chapter 4
Performance Tests
4. Displayed Average Noise Level
27.On the spectrum analyzer, press SHIFT and SWEEP TIME to turn off the video average
function.
28.Record the Maximum Displayed Average Noise Level in Table 4-10 on page 146.
Performance Tests
Chapter 4
129
Performance Tests
5. 3 dB Bandwidth
5. 3 dB Bandwidth
Description
The preselector peak digital-to-analog converter (DAC) is used to tune the center
frequency of the preselector filter until the input signal is 3 dB down on the skirts of the
filter. The 3 dB bandwidth is calculated from the DAC values.
Procedure
1. Connect an SMA cable from the 1ST LO OUTPUT of the spectrum analyzer to the
INPUT of the 11975A Amplifier. Connect a second SMA cable to the OUTPUT of the
amplifier.
2. Connect the 8481A Power Sensor to the power-meter sensor cable, then zero and
calibrate the 436A Power Meter.
3. Set the spectrum analyzer controls as follows:
SHIFT ⇑ ⇑ ⇑ ⇑ (selects U Band)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
CENTER FREQUENCY (sets the LO frequency to 5.0 GHz) . . . . . . 50.3 GHz
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON, then connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier. Set the 436A Power Meter Cal Factor % to the appropriate value for a
frequency of 5 GHz.
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm ±0.1 dBm on
the power meter.
6. Connect the equipment as shown in Figure 4-1 on page 106.
Performance Tests
CAUTION
Turn off the ac power on the 8349B Amplifier prior to connecting or
disconnecting the source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply prior to
connecting or disconnecting it from the 11974.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
130
Chapter 4
Performance Tests
5. 3 dB Bandwidth
7. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing SHIFT and START FREQ. Press the following
keys (on the synthesized sweeper) for the appropriate band:
for an 11974A: 2 Hz
for an 11974Q: 3 Hz
for an 11974U: 3 Hz
for an 11974V: 4 Hz
8. Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
9. Activate external leveling on the synthesized sweeper by pressing XTAL.
10.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
11.Set the spectrum analyzer to the appropriate millimeter band by using the following
key sequence for the appropriate band:
for an 11974A: SHIFT ⇑ ⇑
for an 11974Q: SHIFT ⇑ ⇑ ⇑
for an 11974U: SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974V: SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
12.Set the spectrum analyzer controls as follows:
SHIFT, 5, MHz, 0, and dB (sets external mixer conversion loss to 0 dB)
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 MHz
ENTER dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 dB
13.Set the reference level of the spectrum analyzer by pressing REFERENCE LEVEL and
entering the corresponding value for the band listed below:
for an 11974A: −40 dBm
for an 11974Q: −40 dBm
Performance Tests
for an 11974U: −40 dBm
for an 11974V: −55 dBm
Chapter 4
131
Performance Tests
5. 3 dB Bandwidth
14.Set the center frequency of the spectrum analyzer by pressing CENTER FREQUENCY and
entering the corresponding value for the band listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33 GHz
for an 11974U: 40 GHz
for an 11974V: 50 GHz
15.On the spectrum analyzer, press the following keys:
MARKER NORMAL
PEAK SEARCH
PRESEL PEAK
16.When the preselector-peak routine is complete, press MARKER PEAK SEARCH and ∆.
17.On the spectrum analyzer, press SHIFT and GHz to activate the preselector DAC
number.
18.On the spectrum analyzer, use the ⇓ key to reduce the DAC number by one step at a
time until the delta-marker amplitude is less than or equal to −3.0 dB.
19.Record the Center Frequency and the preselector Low DAC number in Table 4-11 on
page 146.
20.On the spectrum analyzer, use the ⇑ key to tune to the other side of the filter by
increasing the DAC number until the delta marker amplitude goes back to 0. Continue
to increase the DAC number until the delta-marker amplitude is less than or equal to
−3.0 dB.
Performance Tests
21.Record the preselector DAC number in Table 4-11 on page 146 under High DAC
Number.
132
Chapter 4
Performance Tests
5. 3 dB Bandwidth
22.Calculate the 3 dB bandwidth at this frequency using the following equation:
High
DAC number – Low DAC number – 1--------------------------------------------------------------------------------------------------------× 46 × n ( MHz )
63
where n represents the harmonic number listed below:
11974A: 8
11974Q: 10
11974U: 10
11974V: 14
NOTE
The above equation applies only when the spectrum analyzer is an 8566B.
When using an 8563A or 71000C spectrum analyzer, use the following
equation:
High
DAC number – Low DAC number – 1--------------------------------------------------------------------------------------------------------× 65 × n ( MHz )
255
23.Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 33.25 GHz
for an 11974Q: 41.5 GHz
for an 11974U: 50 GHz
for an 11974V: 62.5 GHz
24.Set the center frequency of the spectrum analyzer by pressing CENTER FREQUENCY,
then entering the corresponding value for the band listed below:
for an 11974A: 33.25 GHz
for an 11974Q: 41.5 GHz
for an 11974U: 50 GHz
for an 11974V: 62.5 GHz
25.Repeat step 15 through step 22 for this center frequency and record the results in
Table 4-11 on page 146.
Performance Tests
26.Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
Chapter 4
133
Performance Tests
5. 3 dB Bandwidth
27.Set the center frequency of the spectrum analyzer by pressing CENTER FREQUENCY,
then entering the corresponding value for the band listed below:
for an 11974A: 40 GHz
for an 11974Q: 50 GHz
for an 11974U: 60 GHz
for an 11974V: 75 GHz
28.Repeat step 15 through step 22 for this center frequency and record the results in
Table 4-11 on page 146.
Performance Tests
29.Record the Minimum 3 dB Bandwidth in Table 4-11 on page 146.
134
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Table 4-6 Performance Test Record Summary (1 of 2) for 11974A, Q, U, and V
Calibration Entity:
__________________________________________
Report No. ________________________________
__________________________________________
__________________________________________
Date _____________________________________
__________________________________________
(e.g. 10 SEP 1989)
Model Number ____________________________
Serial No. ________________________________
Options __________________________________
Customer ________________________________
Tested by _________________________________
Ambient temperature ___________________ °C
Relative humidity ________________________%
Power mains line frequency ______________ Hz (nominal)
Test Equipment Used:
Description
Model No.
Trace No.
Cal Due Date
Spectrum Analyzer
___________________
___________________
___________________
Power Meter
___________________
___________________
___________________
Power Sensor (mm)
___________________
___________________
___________________
Power Sensor (µW)
___________________
___________________
___________________
Directional Coupler
___________________
___________________
___________________
Special Notes:
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Chapter 4
135
Performance Tests
________________________________________________________________________________________
Performance Tests
5. 3 dB Bandwidth
Table 4-6 Performance Test Record Summary (2 of 2) for 11974A
Model
11974A
Serial No.
Report No. ________________________________
________________________________
Date ______________________________________
Test
No.
1.
Results
Test Description
Min.
Uncertainty
__________
44 dB
±1.5 dB
Image Rejection Test
25. Minimum Image Rejection
3.
Max.
Conversion Loss
26. Maximum Conversion Loss
2.
Measured
Measurement
59 dBa
__________
±1.6 dB
63 dB
__________
±1.6 dB
Multiple Response Rejection
Test
55. Minimum Multiple
Response Rejection
4.
Displayed Average Noise Level
28. Maximum Displayed
__________
−111 dBma
±2.0 dB
Average Noise Level
5.
3 dB Bandwidth
Performance Tests
29. Minimum 3 dB Bandwidth
80 MHz
__________
±11 MHz
a. This level only applies to an 8566B or an 71000C spectrum analyzer. When using
any other spectrum analyzer, refer to Table 1-1, “11974 Specifications,” on
page 15.
136
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Table 4-6 Performance Test Record Summary (2 of 2) for 11974Q
Model
11974Q
Report No. ________________________________
Serial No. ________________________________
Date _____________________________________
Test
Results
No.
1.
Test Description
Min.
Measured
Measurement
Max.
Uncertainty
Conversion Loss
26. Maximum Conversion
_________
46 dB
±1.5 dB
Loss
2.
Image Rejection Test
25. Minimum Image Rejection
3.
55 dBa
_________
±1.6 dB
60 dB
_________
±1.6 dB
Multiple Response Rejection
Test
55. Minimum Multiple
Response
Rejection
4.
Displayed Average Noise Level
28. Maximum Displayed
_________
−106 dBma
±2.0 dB
Average Noise Level
5.
3 dB Bandwidth
29. Minimum 3 dB Bandwidth
100 MHz
_________
±13 MHz
Performance Tests
a. This level only applies to an 8566B or an 71000C spectrum analyzer. When using
any other spectrum analyzer, refer to Table 1-1, “11974 Specifications,” on
page 15.
Chapter 4
137
Performance Tests
5. 3 dB Bandwidth
Table 4-6 Performance Test Record Summary (2 of 2) for 11974U
Model
11974U
Report No. ________________________________
Serial No. _________________________________
Date ______________________________________
Test
Results
No.
1.
Test Description
Min.
Measured
Measurement
Max.
Uncertainty
Conversion Loss
26. Maximum Conversion
_________
43 dB
±1.6 dB
Loss
2.
Image Rejection Test
25. Minimum Image Rejection
3.
55 dBa
_________
±1.6 dB
60 dB
_________
±1.6 dB
Multiple Response Rejection
Test
55. Minimum Multiple
Response
Rejection
4.
Displayed Average Noise Level
28. Maximum Displayed
_________
−109 dBma
±2.1 dB
Average Noise Level
5.
3 dB Bandwidth
Performance Tests
29. Minimum 3 dB Bandwidth
100 MHz
_________
±13 MHz
a. This level only applies to an 8566B or an 71000C spectrum analyzer. When using
any other spectrum analyzer, refer to Table 1-1, “11974 Specifications,” on
page 15.
138
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Table 4-6 Performance Test Record Summary (2 of 2) for 11974V
Model
11974V
Report No. ________________________________
Serial No. ________________________________
Date _____________________________________
Test
Results
No.
1.
Test Description
Min.
Measured
Measurement
Max.
Uncertainty
Conversion Loss
26. Maximum Conversion
_________
46 dB
±1.5 dB
Loss
2.
Image Rejection Test
25. Minimum Image Rejection
3.
(50 to 67 GHz)
55 dBa
_________
±1.7 dB
(67 to 75 GHz)
45 dBa
_________
±1.7 dB
(50 to 67 GHz)
60 dB
_________
±1.7 dB
(67 to 75 GHz)
55 dB
_________
±1.7 dB
Multiple Response Rejection
Test
55. Minimum Multiple
Response Rejection
4.
Displayed Average Noise Level
28. Maximum Displayed
_________
−94 dBma
±2.1 dB
Average Noise Level
5.
3 dB Bandwidth
29. Minimum 3 dB Bandwidth
100 MHz
_________
±15 MHz
Performance Tests
a. This level only applies to an 8566B or an 71000C spectrum analyzer. When using
any other spectrum analyzer, refer to Table 1-1, “11974 Specifications,” on
page 15.
Chapter 4
139
Performance Tests
5. 3 dB Bandwidth
Table 4-7 Conversion Loss Test Data (1 of 3)
Performance Tests
Model
____________________________
Report No. ________________________________
Serial No. _________________________________
Date ______________________________________
Marker
Frequency
GHz
Marker
Amplitude
dBm
__________
_________
__________
Power
Meter
Readings
dBm
Power
Sensor
Cal Factor
% or dB
Directional
Coupler
Coupling Factor
dB
Conversion
Loss
dB
__________
_________
________________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
140
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Table 4-7 Conversion Loss Test Data (2 of 3)
Model
___________________________
Report No. ________________________________
Serial No. ________________________________
Date _____________________________________
Marker
Frequency
GHz
Marker
Amplitude
dBm
__________
__________
__________
Power
Meter
Readings
dBm
Power
Sensor
Cal Factor
% or dB
Directional
Coupler
Coupling Factor
dB
__________
_________
________________
_________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
__________
__________
__________
_________
________________
_________
141
Performance Tests
Chapter 4
Conversion
Loss
dB
Performance Tests
5. 3 dB Bandwidth
Table 4-7 Conversion Loss Test Data (3 of 3)
Performance Tests
Model
____________________________
Report No. ________________________________
Serial No. _________________________________
Date ______________________________________
Marker
Frequency
GHz
Marker
Amplitude
dBm
__________
_________
__________
Power
Meter
Readings
dBm
Power
Sensor
Cal Factor
% or dB
Directional
Coupler
Coupling Factor
dB
Conversion
Loss
dB
__________
_________
________________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
__________
_________
__________
_________
________________
__________
Maximum Conversion Loss = _________________ dB
142
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Marker
Frequency
GHz
Marker
Amplitude
dBm
Power
Meter
Readings
dBm
Power
Sensor
Cal Factor
% or dB
Directional
Coupler
Coupling Factor
dB
Conversion
Loss
dB
Table 4-8 Image Rejection Test Data
Model
___________________________
Report No. ________________________________
Serial No. ________________________________
Date _____________________________________
Marker
Frequency
GHz
Image
Rejection
dB
Marker
Frequency
GHz
Image
Rejection
dB
Marker
Frequency
GHz
Image
Rejection
dB
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
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__________
_________
__________
__________
_________
__________
__________
_________
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__________
_________
__________
__________
_________
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_________
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_________
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_________
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__________
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__________
_________
__________
__________
_________
__________
__________
_________
__________
__________
_________
Chapter 4
Performance Tests
__________
143
Performance Tests
5. 3 dB Bandwidth
Image
Rejection
dB
Marker
Frequency
GHz
Marker
Frequency
GHz
Image
Rejection
dB
Image
Rejection
dB
Marker
Frequency
GHz
Minimum Image Rejection = ________________ dB
11974V (67–75 GHz):
Minimum Image Rejection = ________________dB
Table 4-9 Multiple Response Rejection Test Data
Model
____________________________
Report No. ________________________________
Serial No. _________________________________
Date ______________________________________
Signal
Frequency
Multiple
Response Frequency
Multiple
Response Rejection
GHz
GHz
dB
#1 ________________________
#1 ________________________
____________________________
#2 ________________________
____________________________
#3 ________________________
____________________________
#4 ________________________
____________________________
#5 ________________________
____________________________
#6 ________________________
____________________________
#7 ________________________
____________________________
Performance Tests
#2 ________________________
#3 ________________________
144
Chapter 4
Performance Tests
5. 3 dB Bandwidth
Signal
Frequency
Multiple
Response Frequency
Multiple
Response Rejection
GHz
GHz
dB
#8 _________________________
___________________________
Minimum Multiple Response Rejection = _________________ dB
11974V (applied signal: 67 to 75 GHz):
Minimum Multiple Response Rejection = _________________ dB
Performance Tests
Chapter 4
145
Performance Tests
5. 3 dB Bandwidth
Model
____________________________
Report No. ________________________________
Serial No. _________________________________
Date ______________________________________
Table 4-10 Displayed Average Noise Level Data
Conversion Loss Value
from Table 4-7
Center Frequency
Displayed Average Noise
Level
dB
GHz
dBm
___________________________
___________________________
____________________________
___________________________
___________________________
____________________________
___________________________
___________________________
____________________________
Maximum Displayed Average Noise Level = _________________ dBm
Table 4-11 3 dB Bandwidth Data
Center Frequency
Low DAC Number
High DAC Number
Performance Tests
(GHz)
3 dB Bandwidth
(MHz)
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
Minimum 3 dB Bandwidth = _______________ dBm
146
Chapter 4
Safety and Regulatory Information
5 Safety and Regulatory Information
147
Safety and Regulatory Information
Safety and Regulatory Information
Safety Symbols
Safety Symbols
The following safety notes are used throughout this manual. Familiarize yourself with
each of the notes and it’s meaning before operating this instrument.
WARNING
Warning denotes a hazard. It calls attention to a procedure which, if
not correctly performed or adhered to, could result in injury or loss
of life. Do not proceed beyond a warning note until the indicated
conditions are fully understood and met.
CAUTION
Caution denotes a hazard. It calls attention to a procedure that, if not
correctly performed or adhered to, could result in damage to or destruction of
the instrument. Do not proceed beyond a caution sign until the indicated
conditions are fully understood and met.
The instruction document symbol. The product is marked with this symbol
when it is necessary for the user to refer to the instructions in the manual.
The CE mark is a registered trademark of the European Community. (If
accompanied by a year, it is when the design was proven.)
The CSA mark is a registered trademark of the Canadian Standards
Association.
This is a symbol of an Industrial Scientific and Medical Group 1 Class A
product.
N279
This C-Tick mark is a registered trademark of the Australian Spectrum
Management Agency.
This symbol indicates that the input power required is AC.
This symbol is used to mark the ON position of the power line switch.
This symbol is used to mark the OFF position of the power line switch.
148
Chapter 5
General Safety Considerations
WARNING
Before this instrument is switched on, make sure it has been properly
grounded through the protective conductor of the ac power cable to
a socket outlet provided with protective earth contact. Any
interruption of the protective (grounding) conductor, inside or
outside the instrument, or disconnection of the protective earth
terminal can result in personal injury.
WARNING
For continued protection against fire hazard, replace fuse only with
same type and ratings, (type 1A/120V or 0.5A/240V). The use of other
fuses or materials is prohibited.
WARNING
No operator serviceable parts inside. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
WARNING
Servicing instructions are for use by qualified personal only. To
avoid electrical shock, do not perform any service unless you are
qualified to do so.
WARNING
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the product from all voltage sources
while it is being opened.
WARNING
The power cord is connected to internal capacitors that may remain
live for 5 seconds after disconnecting the plug from its power supply.
WARNING
There are many points inside the instrument which can, if contacted,
cause personal injury. Be extremely careful. Any adjustments or
service procedures that require operation of the instrument with the
protective covers removed should be performed only by trained
service personnel. This product conforms to Enclosure Protection
Standard IP 2 0 according to IEC-529, and protects against finger
access to hazardous parts within the enclosure.
Chapter 5
149
Safety and Regulatory Information
Safety and Regulatory Information
General Safety Considerations
Safety and Regulatory Information
Safety and Regulatory Information
General Safety Considerations
WARNING
If this product is not used as specified, the protection provided by
the equipment could be impaired. This product must be used in a
normal condition (in which all means for protection are intact) only.
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
This product presents a significant risk of electrical shock if
operated when wet. This product conforms to Enclosure Protection
Standard IP 2 0 according to IEC-529, and therefore, it does not
protect against the admittance of water into the interior of the
product.
WARNING
To prevent electrical shock, disconnect the 11974 Series equipment
from mains before cleaning. Use a dry cloth or one slightly dampened
with water to clean the external case parts. Do not attempt to clean
internally.
WARNING
Isopropyl alcohol is extremely flammable, causes irritation, may
cause eye damage, and is harmful if swallowed or inhaled. It may be
harmful if absorbed through the skin. Keep away from heat, sparks,
and flame. Avoid contact with eyes, skin, clothing. Avoid breathing
vapor. Keep in tightly closed container. Use with adequate
ventilation. Wash thoroughly after handling. In case of fire, use
alcohol foam, dry chemical, or carbon dioxide: water may be
ineffective. In case of spill, soak up with sand or earth. Flush spill
area with water.
Disposal Instructions: Dispose in accordance with all applicable
federal, state, and local environmental regulations.
CAUTION
This product has been designed and tested in accordance with IEC
Publication 1010, Safety Requirements for Electronic Measuring Apparatus,
and has been supplied in a safe condition. The instruction documentation
contains information and warnings which must be followed by the user to
ensure safe operation and to maintain the product in a safe condition.
150
Chapter 5
CAUTION
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC-1010 and IEC-664 respectively.
CAUTION
Before this instrument is switched on, make sure its primary power circuitry
has been adapted to the voltage of the ac power source. Failure to set the ac
power input to the correct voltage could cause damage to the instrument
when the ac power cable is plugged in.
CAUTION
Always use the three-prong AC power cord supplied with this product. Failure
to ensure adequate earth grounding by not using this cord may cause product
damage.
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.
CAUTION
Ventilation Requirements: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4 °C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
Compliance with German Noise Requirements
This is to declare that this instrument is in conformance with the German Regulation on
Noise Declaration for Machines (Laermangabe nach der Maschinenlaermrerordnung
−3.GSGV Deutschland.)
Acoustic Noise Emission/Geraeuschemission
LpA <70 dB
LpA <70 dB
Operator position
am Arbeitsplatz
Normal position
normaler Betrieb
per ISO 7779
nach DIN 45635 t.19
Chapter 5
151
Safety and Regulatory Information
Safety and Regulatory Information
General Safety Considerations
Safety and Regulatory Information
Safety and Regulatory Information
Declaration of Conformity
Declaration of Conformity
152
Chapter 5
Index
Numerics
11974
accessories, 11
front-panel features, 50, 52
power requirements, 33
rear-panel features, 51
remote location, 55
serial numbers, 12
11974 Overview, 10
8561A/62A/62B sweep time
considerations, 94
B
band selection
using a 71000C, 66, 74
using an 8561A/62A/62B, 92
C
calibration, 13
characteristic tables, 19
characteristics, 14
checking the fuse, 34
CNV LOSS VS FREQ softkey, 77,
94
compatibility, 29
CONV LOSS softkey, 68
conversion loss, 68, 76, 77, 94, 95
frequency bands, 77, 95
conversion loss versus frequency
correction, 69
conversion-loss correction, 69
conversion-loss data, 84, 89
D
declaration of conformity, 152
description of
11974, 10
E
electrostatic discharge, 39
entering
Index
F
flatness, 76, 77, 94
flatness points, 77, 95
frequency conversion loss, 77, 95
frequency correction, 69
frequency tracking, 81
frequency tracking calibration
using an 8561A/62A/62B, 91
using an 8563A/E, 8561B/E, or
8560A/E, 72
using an 8566B, 59, 107
fulband WFDGYJ softkey, 67
FULL BAND softkey, 76, 94
fullband KAQUVE softkey, 67
H
harmonic lock, 76, 94
I
image responses, 54
initial inspection, 31
installation, 27
L
line fuse, 34
line-voltage selector switch, 33
M
manually entering, 84, 89
MARKER NORMAL softkey, 79,
95
minimum system dynamic range
11974A, 23
11974Q, 24
11974U, 25
11974V, 26
multiple responses, 54
N
NEXT PEAK softkey, 79
O
operating hints, 54
dynamic range optimization, 57
multiple responses, 54
preselector-peak routine, 54
preventing erroneous
preselector peaking, 54
RF port VSWR effects, 57
spurious response tests, 54
operating precautions, 53
amplitude accuracy, 53
electrostatic discharge, 53
maximum LO input level, 53
maximum RF input level, 53
operation
using a 71000C, 63, 70
using a PSA Series, 85
using an 8561A/62A/62B, 90, 94
using an 8563A/E, 8561B/E, or
8560A/E, 71, 90
using an 8566B, 58, 62
using an E4407B, 80
P
PEAK SEARCH softkey, 79, 95
performance test setup, 106
performance tests, 97
3 dB bandwidth, 130
displayed average noise level,
126
image rejection, 114
multiple response rejection, 118
power cable, 35
power requirements, 33
preparation for use, 32
PRESEL AUTO PK softkey, 78
PRESEL DAC softkey, 68
PRESEL MAN ADJ softkey, 78
PRESEL On Off softkey, 68
PRESEL PEAK softkey, 68, 77
pre-select softkey, 68
preselected external mixing, 76
preselector DAC, 68
preselector peak, 68
preselector peaking
using an 71000C, 67, 75
using an 8561A/62A/62B, 93
using an 8566B, 61
preselector-peak routine, 54
R
reducing ESD damage, 40
S
sales and service offices, 44
service, 42
153
Index
A
accessories, 11
AMPCOR command, 69
amplitude calibration
using a 71000C, 75
using an 71000C, 66
using an 8561A/62A/62B, 93
using an 8566B, 61
amplitude correction, 77, 94
AMPTD CORRECT softkey, 76,
94
AVERAGE CNV LOSS softkey,
76, 94
conversion-loss data, 84, 89
ESD damage, 40
ext mixer softkey, 67
EXT MXR PRE UNPR softkey,
76, 77
external mixer
preselected, 76
unpreselected, 76, 94
EXTERNAL MIXER softkey, 76
external mixing bands, 67
external mixing functions
71000C, 67
8563A/E, 76
8566B, 62
Index
Index
foam inserts, 42
repackaging, 42
repair tags, 42
return to factory, 42
specification tables, 14
specifications, 14
spectrum analyzer compatibility,
29
spurious response tests, 54
static-safe workstation, 39
T
tracking
frequency, 81
U
unpreselected external mixing,
76, 94
154
Index
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