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Keysight R347B and Q347B
Noise Sources
This manual applies directly to instruments with serial
numbers prefixed 2726A and above, and serial numbers
prefixed US and MY.
This manual applies directly to instruments with serial
numbers prefixed MY5823 and above, and serial numbers
prefixed US and MY.
Operating and
Service Manual
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2007-2018
No part of this manual may be repro-
duced in any form or by any means
(including electronic storage and
retrieval or translation into a foreign
language) without prior agreement and
written consent from Keysight Technologies as governed by United States and
international copyright laws.
Manual Part Number
00347-90013
Edition
Edition 3, August 1, 2018
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software
described in this document are furnished under a license and may be
used or copied only in accordance with
the terms of such license.
Declaration of Conformity
Declarations of Conformity for this
product and for other Keysight products may be downloaded from the
Web.
U.S. Government Rights
The Software is “commercial computer
software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and
Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer software under the same terms
by which the software is customarily
provided to the public. Accordingly,
Keysight provides the Software to U.S.
government customers under its standard commercial license, which is
embodied in its End User License
Agreement (EULA). The license set
forth in the EULA represents the
exclusive authority by which the U.S.
government may use, modify,
distribute, or disclose the Soft-ware.
The EULA and the license set forth
therein, does not require or per-mit,
among other things, that Keysight: (1)
Furnish technical information related to
commercial computer
commercial computer software
documentation that is not customarily
provided to the public; or (2) Relinquish
to,
or otherwise provide, the government rights in excess of these rights
customarily provided to the public to
use, modify, reproduce, release, per-form,
display, or
computer software
com-puter software documentation.
No additional government
requirements beyond those set forth in
the EULA shall apply, except to the
extent
licenses are explicitly required from all
providers of commercial computer
software pursu-ant to the FAR and the
DFARS and are set forth specifically in
writing
Keysight shall be under no obligation to
update, revise or otherwise modify the
Software. With respect to any
technical data as defined by FAR
2.101, pursuant to FAR 12.211 and
27.404.2 and DFARS 227.7102, the
U.S. government acquires no greater
than Limited Rights as defined in FAR
27.401 or DFAR 227.7103-5 (c), as
applicable in any technical data.
disclose commercial
that those terms, rights, or
else-where in the EULA.
soft-ware or
or commercial
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,”
AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO THE
MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER
EXPRESS OR IMPLIED, WITH REGARD
TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. KEYSIGHT
SHALL NOT BE LIABLE FOR ERRORS
OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION
WITH THE FURNISHING, USE, OR
PERFORMANCE OF THIS DOCUMENT
OR OF ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT
AND THE USER HAVE A SEPARATE
WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT
CONFLICT WITH THESE TERMS, THE
WARRANTY TERMS IN THE SEPARATE
AGREEMENT SHALL CONTROL.
Safety Information
A CAUTION notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, if not
correctly performed or adhered to,
could result in damage to the product
or loss of important data. Do not proceed beyond a CAUTION notice until
the indicated conditions are fully
understood and met.
A WARNING notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, if not
correctly performed or adhered to,
could result in personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions are
fully understood and met.
2 Keysight R347B and Q347B Operating and Service Manual
Environmental Conditions
The table below shows the general environmental requirements for this
instrument.
Environmental condition Requirement
Temperature
Humidity < 95% RH
Operating condition
– 0 °C to +55 °C
Keysight R347B and Q347B Operating and Service Manual 3
Regulatory Information
MSIP-REM-Kst-
xxxxxxxxxxxxxx
The R347B and Q347B Noise Sources comply with the following Electromagnetic
Compatibility (EMC) compliances:
– IEC 61326-1/EN 61326-1
– Canada: ICES/NMB-001
– Australia/New Zealand: AS/NZS CISPR11
In order to preserve the EMC performance of the product, any cable which
becomes worn or damaged must be replaced with the same type and
specification.
Regulatory markings
The CE mark is a registered trademark of the
European Community. This CE mark shows that
the product complies with all the relevant
European Legal Directives.
ICES/NMB-001 indicates that this
ISM product complies with the
Canadian ICES-001.
Cet appareil ISM est conforme a la
norme NMB-001 du Canada.
ISM GRP.1 Class A indicates that this
is an Industrial Scientific and Medical
Group 1 Class A product.
4 Keysight R347B and Q347B Operating and Service Manual
The RCM mark is a registered trademark of the
Australian Communications and Media Authority.
This instrument is Class A suitable for professional
use and is for use in electromagnetic environments
outside of the home.
This symbol indicates the time period
during which no hazardous or toxic
substance elements are expected to
leak or deteriorate during normal
use. Forty years is the expected
useful life of the product.
This instrument complies with the
WEEE Directive (2002/96/EC)
marking requirement. This affixed
product label indicates that you must
not discard this electrical or
electronic product in domestic
household waste.
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/ 96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard this
electrical or electronic product in domestic household waste.
Product category
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.
Keysight R347B and Q347B Operating and Service Manual 5
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6 Keysight R347B and Q347B Operating and Service Manual
Table of Contents
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Regulatory markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/
EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1Introduction
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2Installation
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mating Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3 Specifications
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Supplemental characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4Operating Guide
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Operator’s check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Repair and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Returning a Noise Source for Calibration . . . . . . . . . . . . . . . . . . . . . . .32
5 Using the ENR Data Diskette or CD
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Keysight R347B and Q347B Operating and Service Manual 7
Loading ENR Data from Diskette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Retrieving ENR Data from CD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Saving the ENR Data to the Noise Figure Analyzer’s Internal
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Copying the ENR Data to the Noise Figure Analyzer’s Internal
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6 ENR File Format
Format Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Comment records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Header fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ENR data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8 Keysight R347B and Q347B Operating and Service Manual
List of Figures
Figure 1-1 Typical calibration labels . . . . . . . . . . . . . . . . . . . . . . .15
Figure 4-1 Operator’s check setup . . . . . . . . . . . . . . . . . . . . . . . .29
Figure 4-2 ENR measurement test setup . . . . . . . . . . . . . . . . . . .29
Figure 4-3 A typical example of the ENR value for R347B . . . . . . 30
Keysight R347B and Q347B Operating and Service Manual 9
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10 Keysight R347B and Q347B Operating and Service Manual
List of Tables
Table 3-1 R347B and Q347B specifications . . . . . . . . . . . . . . . . .22
Table 3-2 R347B and Q347B supplemental characteristics . . . . 23
Table 3-3 Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . .26
Table 6-1 Mandatory header fields . . . . . . . . . . . . . . . . . . . . . . .43
Table 6-2 Optional header fields . . . . . . . . . . . . . . . . . . . . . . . . .43
Keysight R347B and Q347B Operating and Service Manual 11
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12 Keysight R347B and Q347B Operating and Service Manual
Keysight R347B and Q347B Noise Sources
NOTE
Operating and Service Manual
1 Introduction
Product Overview 14
This chapter provides an overview of the Keysight R347B and Q347B Noise
Sources.
This manual contains operating and service information for both the R347B and
the Q347B noise sources. Unless otherwise specified, the information in this
manual applies to both noise sources.
13
1Introduction
CAUTION
Product Overview
The Keysight R347B and Q347B noise sources produce noise output (power-on)
when +28 V is applied. When they are off, there is residual noise due to thermal
agitation in the noise sources (power-off). These two noise levels are used to
measure the gain and added noise of the device under test, and consequently, its
noise figure.
The Excess Noise Ratio (ENR) and the magnitude of the reflection coefficient
(Rho) in the ON state has been measured at major frequencies and recorded on a
label unique to each noise source. ENR references power-on noise power to the
noise power that exists at 290 K (17 °C). Sample noise source labels are provided
in Figure 1-1. The numbers on the sample labels in Figure 1-1 may differ from the
numbers on your noise source label because each noise source has been
individually tested. In addition, a separate calibration sheet showing the complex
reflection coefficient in both the ON and OFF states is included with each
instrument.
The noise source is provided with a BNC female connector for +28 V power input.
The waveguide output flange for the R347B is a type UG-599/U. The waveguide
output flange for the Q347B is a modified type UG-383/U.
Do not disassemble the noise source. The diode module is extremely static
sensitive and can be easily damaged or the calibration may be altered.
14 Keysight R347B and Q347B Operating and Service Manual
Introduction 1
Figure 1-1 Typical calibration labels
Keysight R347B and Q347B Operating and Service Manual 15
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