Keysight N1913, 1914A User Manual

Keysight N1913/1914A EPM
Series Power Meters

User’s Guide

Notices

CAUTION

WARNING

Copyright Notice

© Keysight Technologies 2009–2018
No part of this manual may be

reproduced 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

N1913-90001

Edition

Edition 20, February 12, 2018

Printed in:

Printed in Malaysia

Published by:

Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia

Technology Licenses

The hard ware 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. Go to http://www.keysight.com/

go/conformity. You can then search by

product number to find the latest
Declaration of Conformity.

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), a copy of which can be found
at http://www.keysight.com/find/

sweula. The license set forth in the

EULA represents the exclusive authority
by which the U.S. government may use,
modify, distribute, or disclose the
Software. The EULA and the license set
forth therein, does not require or
permit, among other things, that
Keysight: (1) Furnish technical
information related to commercial
computer software or 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,
perform, display, or disclose
commercial computer software or
commercial computer software
documentation. No additional
government requirements beyond
those set forth in the EULA shall apply,
except to the extent that those terms,
rights, or licenses are explicitly required
from all providers of commercial
computer software pursuant to the FAR
and the DFARS and are set forth
specifically in writing elsewhere in the
EULA. 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.

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 N1913/1914A User’s Guide

Certification

Keysight Technologies certifies that this product met its published specifications
at the time of shipment. Keysight further certifies that its calibration
measurements are traceable to the United States National Institute of Standard
and Technology (formerly National Bureau of Standards), to the extent allowed by
that organization’s calibration facility, and to the calibration facilities of other
International Standards Organization members.

General 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 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. Duration and conditions of warranty for this product may
be superseded when the product is integrated into (becomes a part of) other
Keysight products. During the warranty period, Keysight will, at its option, either
repair or replace products which prove to be defective. The warranty period begins
on the date of delivery or on the date of installation if installed by Keysight.

Warranty Service

For warranty service or repair, this product must be returned to a service facility
designated by Keysight. For products returned to Keysight for warranty service,
the Buyer shall prepay shipping charges to Keysight and Keysight shall pay
shipping charges to return the product to the Buyer. However, the Buyer shall pay
all shipping charges, duties, and taxes for products returned to Keysight from
another country.

Keysight N1913/1914A User’s Guide 3

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or
inadequate maintenance by the Buyer, Buyer-supplied products or interfacing,
unauthorized modification or misuse, operation outside of the environmental
specifications for the product, or improper site preparation or maintenance.

The design and implementation of any circuit on this product is the sole
responsibility of the Buyer. Keysight does not warrant the Buyer’s circuitry or
malfunctions of Keysight products that result from the Buyer’s circuitry. In
addition, Keysight does not warrant any damage that occurs as a result of the
Buyer’s circuit or any defects that result from Buyer-supplied products.

To the extent allowed by local law, Keysight makes no other warranty, expressed
or implied, whether written or oral with respect to this product and specifically
disclaims any implied warranty or condition of merchantability, fitness for a
particular purpose or satisfactory quality.

Exclusive Remedies

To the extent allowed by local law, the remedies provided herein are the Buyer’s
sole and exclusive remedies. Keysight shall not be liable for any direct, indirect,
special, incidental, or consequential damages (including lost profit or data),
whether based on warranty, contract, tort, or any other legal theory.

4 Keysight N1913/1914A User’s Guide

Restricted Rights Legend

The Software and Documentation have been developed entirely at private expense.
They are delivered and licensed as “commercial computer software” as defined in
DFARS 252.227-7013 (Oct 1988), DFARS 252.211-7015 (May 1991), or DFARS

252.227-7014 (Jun 1995), as a “commercial item” as defined in FAR 2.101(a), or as
“restricted computer software” as defined in FAR 52.227-19 (Jun 1987) (or any
equivalent agency regulation or contract clause), whichever is applicable. You have
only those rights provided for such Software and Documentation by the applicable
FAR or DFARS clause or the Keysight standard software agreement for the product
involved.

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.

Keysight N1913/1914A User’s Guide 5

Safety Summary

WARNING

CAUTION

The following general safety precautions must be observed during all phases of
operation of this instrument. Failure to comply with these precautions or with
specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Keysight Technologies assumes
no liability for the customer’s failure to comply with these requirements.

Safety Notices

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 loss of life. Do not proceed beyond a
WARNING notice until the indicated cond itions are fully understood and met.

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.

6 Keysight N1913/1914A User’s Guide

Safety Symbols

The following symbols on the instrument and in the documentation indicate
precautions which must be taken to maintain safe operation of the instrument.

Caution, risk of danger. The Instruction
Documentation Symbol. The
instrument is marked with this symbol
when it is necessary for the user to
refer to the instructions in the supplied
documentation.

Alternating current (AC)

Direct current (DC) On (Supply)

Both direct and alternating current Off (Supply)

Three-phase alternating current Caution, risk of electric shock

Earth (ground) TERMINAL Caution, hot surface

PROTECTIVE CONDUCTOR TERMINAL In position of bi-stable push control

This symbol indicates the operating
switch for ‘Stand-by’ mode. Note, this
instrument is NOT isolated from the
mains when the switch is pressed. To
isolate the instrument, the mains
coupler (mains input cord) should be
removed from the power supply.

Instrument protected throughout by
DOUBLE INSULATION or REINFORCED
INSULATION.

Keysight N1913/1914A User’s Guide 7

Frame or chassis TERMINAL Out position of bi-stable push control

This symbol indicates that a device, or
part of a device, may be susceptible to
electrostatic discharges (ESD) which

Equipotentiality

can result in damage to the product.
Observe ESD precautions given on the
product, or its user documentation,

when handling equipment bearing this
mark.

8 Keysight N1913/1914A User’s Guide

General Safety Information

WARNING

This is a Safety Class I instrument (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 of the instrument is likely to damage the meter.
Intentional interruption is prohibited.

– Do not operate the instrument in an explosive atmosphere or in the

presence of flammable gasses or fumes.

– Do not use repaired fuses or short-circuited fuseholders: For continued

protection against fire, replace the line fuse(s) only with fuse(s) of the
same voltage and current rating and type.

– Do not perform procedures involving cover or shield removal unless you

are qualified to do so: Operating personnel must not remove the meter
covers or shields. Procedures involving the removal of covers and shields
are for use by service-trained personnel only.

– Do not service or adjust alone: Under certain conditions, dangerous

voltages may exist even with the instrument switched off. To avoid
electrical shock, service personnel must not attempt internal service or
adjustment unless another person, capable of rendering first aid and
resuscitation, is present.

Keysight N1913/1914A User’s Guide 9

– Do not operate damaged instrument: Whenever it is possible that the

safety protection features built into this instrument have been impaired,
either through physical damage, excessive moisture, or any other reason,
REMOVE POWER and do not use the instrument until safe operation can
be verified by service-trained personnel. If necessary, return the
instrument to a Keysight Technologies Sales and Service Office for
service and repair to ensure the safety features are maintained.

– Do not substitute parts or modify the instrument: Because of the danger

of introducing additional hazards, do not install substitute parts or
perform any unauthorized modification to the instrument. Return the
instrument to a Keysight Technologies Sales and Service Office for
service and repair to ensure the safety features are maintained.

Environmental Conditions

The N1913/1914A is designed for indoor use and in an area with low
condensation. The table below shows the general environmental requirements for
this instrument.

Environmental condition Requirement

Temperature

Humidity

Altitude Up to 4600 m

Pollution degree 2

Regulatory Information

Operating condition
– 0 °C to 55 °C
Storage condition
– –40 °C to 70 °C

Operating condition
– Up to 95% RH at 40°C (non-condensing)
Storage condition
– Up to 90% RH at 65°C (non-condensing)

The N1913/1914A EPM Series power meters comply with the following safety and
Electromagnetic Compatibility (EMC) compliances:

Safety compliance

– IEC 61010-1:2010/EN 61010-1:2010 (3rd Edition)

– Canada: CAN/CSA-C22.2 No. 61010-1-12

– USA: ANSI/UL 61010-1 (3rd Edition)

EMC compliance

– IEC 61326-1:2005/EN 61326-1:2006

– CISPR11:2003/EN 55011:2007, Group 1 Class A

– Canada: ICES/NMB-001:Issue 4, June 2006

– Australia/New Zealand: AS/NZS CISPR 11:2004

10 Keysight N1913/1914A User’s Guide

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
device 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.

This symbol is a South Korean Class A
EMC Declaration. This is a Class A
instrument suitable for professional
use and in electromagnetic
environment 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.

The CSA mark is a registered
trademark of the Canadian
Standards Association.

The RCM mark is a registered
trademark of the Australian
Communications and Media Authority.

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.

Keysight N1913/1914A User’s Guide 11

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.

To return this unwanted instrument, contact your nearest Keysight Service Center,
or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml
for more information.

Sales and Technical Support

To contact Keysight for sales and technical support, refer to the support links on
the following Keysight websites:

– www.keysight.com/find/epm

(product-specific information and support, software and
documentation updates)

– www.keysight.com/find/assist

(worldwide contact information for repair and service)

12 Keysight N1913/1914A User’s Guide

Table of Contents

Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

General Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Limitation of Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Exclusive Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Restricted Rights Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Technology Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/

EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

1Introduction

LXI Class-C Compliant Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Power Meter and Sensor Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Conventions Used in this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Front Panel Keys and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

The Display Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Window Symbols and Pop-ups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Keysight N1913/1914A User’s Guide 13

Warning Symbol Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Wait Symbol Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Confirm Symbol Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Numeric Entry Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Text Entry Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

List Pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Using the Instrument Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Using the Remote Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Editing the Instrument’s LAN Settings . . . . . . . . . . . . . . . . . . . . . . . 46

Capturing the Screen Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Getting the Instrument Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Making Socket Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Programming Language Selection (Option 200) . . . . . . . . . . . . . . . . . . 53

2 General Power Meter Functions

Setting the Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Setting the Measurement Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Setting the Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Making Relative Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Setting Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Setting Channel Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Setting Display Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Setting Frequency Dependent Offsets . . . . . . . . . . . . . . . . . . . . . . . 65

Editing Frequency Dependent Offset Tables . . . . . . . . . . . . . . . . . . 68

Selectable Frequency Dependent Offset Unit (dB or %) . . . . . . . . . 71

Setting Measurement Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Step Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Measuring Pulsed Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Setting External Trigger for Average Power Measurement . . . . . . . . . . 79

Power Sweep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Frequency Sweep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Determine the Right Step to be Set . . . . . . . . . . . . . . . . . . . . . . . . . 86

14 Keysight N1913/1914A User’s Guide

Setting Measurement Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Setting Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Checking for Limit Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Numeric Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Single Function Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Combined Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Max Hold/Min Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Recorder Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Saving and Recalling Power Meter States . . . . . . . . . . . . . . . . . . . . . .100

Editing a Register’s Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Recalling a Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Zeroing and Calibrating the Power Meter . . . . . . . . . . . . . . . . . . . . . .102

Zeroing the Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Zero/Cal Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Calibration Procedure Using E-Series Power Sensors and N8480 Series

Power Sensors (excluding Option CFT) . . . . . . . . . . . . . . . . . . .105

Calibration Procedure Using 8480 Series Power Sensors and N8480 Se-

ries Power Sensors (with Option CFT) . . . . . . . . . . . . . . . . . . . .106

Adapter Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Blank Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Secure Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Backlight Intensity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Memory Erase/Secure Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

VGA Output (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Warm Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Battery Information (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Running Under Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Battery Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Battery General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Setting the Cable Short/Long . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

3 Using E9300 E-Series Power Sensors

Keysight N1913/1914A User’s Guide 15

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Power Meter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Measuring Spread Spectrum and Multitone Signals . . . . . . . . . . . . . 138

CDMA Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Multitone Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Measuring TDMA Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Power Meter and Sensor Operation . . . . . . . . . . . . . . . . . . . . . . . . 141

Achieving Stable Results with TDMA Signals . . . . . . . . . . . . . . . . . 141

Achieving Stable Results with GSM Signals . . . . . . . . . . . . . . . . . . 142

Electromagnetic Compatibility (EMC) Measurements . . . . . . . . . . . . 143

Measurement Accuracy and Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Setting the Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Measurement Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

4 Using E4410 E-Series Power Sensors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Power Meter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

5 Using 8480 Series Power Sensors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Power Meter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

8480 Series Sensors Connection Requirements . . . . . . . . . . . . . . 157

Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Frequency Specific Calibration Factors . . . . . . . . . . . . . . . . . . . . . . . . 159

Sensor Calibration Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Editing/Generating Sensor Calibration Tables . . . . . . . . . . . . . . . . 166

Pre-installed Calibration Table Contents . . . . . . . . . . . . . . . . . . . . 170

16 Keysight N1913/1914A User’s Guide

6 Using N8480 Series Power Sensors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

Power Meter Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . . .177

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178

N8480 Series Sensors Connection Requirements . . . . . . . . . . . . . . . .179

N8480 Series Power Sensors (excluding Option CFT) . . . . . . . . . . . . .180

N8480 Series Power Sensors with Option CFT . . . . . . . . . . . . . . . . . .182

Frequency Specific Calibration Factors . . . . . . . . . . . . . . . . . . . . .182

Sensor Calibration Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

Selecting a Sensor Calibration Table . . . . . . . . . . . . . . . . . . . . . . .188

Editing/Generating Sensor Calibration Tables . . . . . . . . . . . . . . . .191

7 Using U2000 Series USB Power Sensors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196

Power Meter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199

Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200

Electromagnetic Compatibility (EMC) Measurements . . . . . . . . . . . . .202

Measurement Accuracy and Speed . . . . . . . . . . . . . . . . . . . . . . . . . . .203

Setting the Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Measurement Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204

8 Using U8480 Series USB Thermocouple Sensors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208

Power Meter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209

Default Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211

Zeroing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215

Zero+Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217

FDO Table Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217

Reference Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218

Keysight N1913/1914A User’s Guide 17

9Maintenance

Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Front Panel Selection of Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . 220

Instrument Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Remote Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Test Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Error Message List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

Operator Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Replacing the Power Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Connector Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

Contacting Keysight Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

Before calling Keysight Technologies . . . . . . . . . . . . . . . . . . . . . . . 235

Check the Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

Instrument serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

Recommended Calibration Interval . . . . . . . . . . . . . . . . . . . . . . . . 237

Erasing Memory Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

Returning Your Power Meter for Service . . . . . . . . . . . . . . . . . . . . . . . 239

Packaging the Power Meter for Shipment . . . . . . . . . . . . . . . . . . . 239

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

10 Characteristics and Specifications

18 Keysight N1913/1914A User’s Guide

List of Figures

Figure 1-1 Dual numeric display . . . . . . . . . . . . . . . . . . . . . . . . . .34

Figure 1-2 Single numeric and analog display . . . . . . . . . . . . . . .35

Figure 1-3 Full screen numeric display . . . . . . . . . . . . . . . . . . . . .36

Figure 1-4 Accessing the instrument Web interface . . . . . . . . . . .41

Figure 1-5 N1914A EPM Series power meter Web interface

Figure 1-6 Message to identify the instrument . . . . . . . . . . . . . . .43

Figure 1-7 Example of Lan Status message . . . . . . . . . . . . . . . . .44

Figure 1-8 Viewing LAN configuration settings from the Web

Figure 1-9 Password security dialog box . . . . . . . . . . . . . . . . . . . .47

Figure 1-10 Changing the instrument LAN interface configuration 48

Figure 1-11 Manual Configuration window . . . . . . . . . . . . . . . . . . .51

Figure 1-12 Power meter successfully connected via socket

Figure 2-1 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Figure 2-2 Typical relative measurement display . . . . . . . . . . . . .59

Figure 2-3 Numeric display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Figure 2-4 Simplified measurement path . . . . . . . . . . . . . . . . . . .61

Figure 2-5 Typical channel offset display . . . . . . . . . . . . . . . . . . .62

Figure 2-6 Channel offset indicator . . . . . . . . . . . . . . . . . . . . . . . .63

Figure 2-7 Typical display offset display . . . . . . . . . . . . . . . . . . . .64

Figure 2-8 Frequency dependent offset tables display . . . . . . . . .66

Figure 2-9 Frequency dependent offset indicator . . . . . . . . . . . . .67

Figure 2-10 “Edit Offset” display with data added . . . . . . . . . . . . .69

Figure 2-11 Edit table title pop-up . . . . . . . . . . . . . . . . . . . . . . . . .69

Figure 2-12 Changing offset unit . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Figure 2-13 Offset display in engineering unit (when the selected unit is

Figure 2-14 Typical averaged readings . . . . . . . . . . . . . . . . . . . . . .73

Figure 2-15 Meas Avg Count pop-up . . . . . . . . . . . . . . . . . . . . . . .74

Figure 2-16 Pulsed signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Figure 2-17 Duty cycle setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Figure 2-18 Duty cycle indicator . . . . . . . . . . . . . . . . . . . . . . . . . . .77

(Welcome Page) . . . . . . . . . . . . . . . . . . . . . . . . . . .42

interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Keysight N1913/1914A User’s Guide 19

Figure 2-19 TRIG IN and TRIG OUT connection diagram between power

meter and power source . . . . . . . . . . . . . . . . . . . . . 80

Figure 2-20 Channel Setup display . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 2-21 Trigger setting menu 1 of 2 . . . . . . . . . . . . . . . . . . . . . 82

Figure 2-22 Trigger setting menu 2 of 2 . . . . . . . . . . . . . . . . . . . . . 82

Figure 2-23 Limits checking applications . . . . . . . . . . . . . . . . . . . . 87

Figure 2-24 Limits checking results . . . . . . . . . . . . . . . . . . . . . . . . 87

Figure 2-25 Minimum limit pop-up . . . . . . . . . . . . . . . . . . . . . . . . . 89

Figure 2-26 Limit failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Figure 2-27 Measurement Setup showing single configuration . . 91

Figure 2-28 Function pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Figure 2-29 Measurement Setup showing combined configuration .

93

Figure 2-30 Measurement example display . . . . . . . . . . . . . . . . . . 93

Figure 2-31 Max hold/min hold measurement is performed on the

‘HOLD’ block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Figure 2-32 Hold pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 2-33 Min Hold and Max Hold measurement mode indicated in

the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 2-34 Measurement mode in full word . . . . . . . . . . . . . . . . . 96

Figure 2-35 Recorder Minimum pop-up . . . . . . . . . . . . . . . . . . . . . 98

Figure 2-36 Recorder Maximum pop-up . . . . . . . . . . . . . . . . . . . . 99

Figure 2-37 Save/Recall screen . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Figure 2-38 Save confirm pop-up . . . . . . . . . . . . . . . . . . . . . . . . . 100

Figure 2-39 File name pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Figure 2-40 Recall pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Figure 2-41 Zeroing pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Figure 2-42 Please zero and calibrate window . . . . . . . . . . . . . . . 103

Figure 2-43 Calibration wait pop-up . . . . . . . . . . . . . . . . . . . . . . . 104

Figure 2-44 System calibration setup . . . . . . . . . . . . . . . . . . . . . . 110

Figure 2-45 Blank screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Figure 2-46 Secure Blank feature . . . . . . . . . . . . . . . . . . . . . . . . . 113

Figure 2-47 Enter 6-digit Password pop-up . . . . . . . . . . . . . . . . . 114

Figure 2-48 6-digit password entered . . . . . . . . . . . . . . . . . . . . . 114

Figure 2-49 Warning message . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Figure 2-50 Reconfirm password . . . . . . . . . . . . . . . . . . . . . . . . . 115

Figure 2-51 Warning message . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

20 Keysight N1913/1914A User’s Guide

Figure 2-52 Password reconfirmation pop-up . . . . . . . . . . . . . . .116

Figure 2-53 Enter password to restore display . . . . . . . . . . . . . . .117

Figure 2-54 Backlight intensity control . . . . . . . . . . . . . . . . . . . . .118

Figure 2-55 Increase or decrease the backlight brightness . . . . .118

Figure 2-56 Activate memory erase using combo keys . . . . . . . .119

Figure 2-57 Secure Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Figure 2-58 Confirmation to begin secure erase . . . . . . . . . . . . . .120

Figure 2-59 Warning pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Figure 2-60 VGA toggle ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . .122

Figure 2-61 Enable/disable warm start feature . . . . . . . . . . . . . .123

Figure 2-62 “Running under battery power” pop-up . . . . . . . . . .124

Figure 2-63 Battery indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Figure 2-64 Battery menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Figure 2-65 Battery status display . . . . . . . . . . . . . . . . . . . . . . . . .126

Figure 2-66 Low battery indicator . . . . . . . . . . . . . . . . . . . . . . . . .126

Figure 2-67 Display backlight control . . . . . . . . . . . . . . . . . . . . . .127

Figure 2-68 Short/long cable option . . . . . . . . . . . . . . . . . . . . . . .130

Figure 3-1 E9300 E-Series auto-averaging settings . . . . . . . . . .133

Figure 3-2 . . . . . E9300 E-Series sensor default channel setup 134

Figure 3-3 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . .137

Figure 3-4 Spread spectrum signal . . . . . . . . . . . . . . . . . . . . . . .138

Figure 3-5 Wideband CDMA error of E-Series E9300 power sensor

versus corrected CW sensor . . . . . . . . . . . . . . . . .139

Figure 3-6 CDMA (IS-95A): 9Ch Fwd . . . . . . . . . . . . . . . . . . . . .139

Figure 3-7 Calibration factors versus frequency . . . . . . . . . . . . .140

Figure 4-1 E-Series CW sensor auto-averaging settings . . . . . .149

Figure 4-2 E-Series E4410 sensor default channel setup . . . . . .150

Figure 4-3 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Figure 5-1 8480 Series auto-averaging settings . . . . . . . . . . . . .155

Figure 5-2 8480 Series sensor default channel setup . . . . . . . . .156

Figure 5-3 Reference Calibration Factor pop-up window . . . . .160

Figure 5-4 Calibration factor pop-up window . . . . . . . . . . . . . . .161

Figure 5-5 Calibration factor display . . . . . . . . . . . . . . . . . . . . . .161

Figure 5-6 Sensor table selected . . . . . . . . . . . . . . . . . . . . . . . . .164

Figure 5-7 Frequency dependent offset indicator . . . . . . . . . . . .164

Figure 5-8 Frequency/calibration table display . . . . . . . . . . . . .165

Figure 5-9 “Sensor Tbls” screen . . . . . . . . . . . . . . . . . . . . . . . . .167

Keysight N1913/1914A User’s Guide 21

Figure 5-10 “Edit Cal” display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 5-11 Edit table title pop-up . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 6-1 Auto-averaging settings . . . . . . . . . . . . . . . . . . . . . . 177

Figure 6-2 N8480 Series sensor (excluding Option CFT) default chan-

nel setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 6-3 N8480 Series sensor with Option CFT default channel

setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 6-4 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Figure 6-5 Reference calibration factor pop-up window . . . . . . 183

Figure 6-6 Calibration factor pop-up window . . . . . . . . . . . . . . 184

Figure 6-7 Calibration factor displayed . . . . . . . . . . . . . . . . . . . . 185

Figure 6-8 Sensor table selected . . . . . . . . . . . . . . . . . . . . . . . . 188

Figure 6-9 Frequency dependent offset indicator . . . . . . . . . . . 189

Figure 6-10 Frequency/calibration table display . . . . . . . . . . . . . 190

Figure 6-11 “Sensor Tbls” screen . . . . . . . . . . . . . . . . . . . . . . . . . 192

Figure 6-12 “Edit Cal” display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Figure 6-13 Edit table title pop-up . . . . . . . . . . . . . . . . . . . . . . . . 193

Figure 7-1 U2000 Series auto-averaging settings . . . . . . . . . . . 198

Figure 7-2 . . U2000 Series USB power sensor default channel setup

199

Figure 7-3 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Figure 8-1 U8480 Series auto-averaging settings . . . . . . . . . . . 209

Figure 8-2 U8480 Series USB power sensor default channel setup

210

Figure 8-3 Frequency pop-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Figure 8-4 Zeroing pop-up message . . . . . . . . . . . . . . . . . . . . . 213

Figure 8-5 Zeroing error pop-up message . . . . . . . . . . . . . . . . . 214

Figure 8-6 Calibration type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Figure 8-7 Calibration pop-up message . . . . . . . . . . . . . . . . . . . 216

Figure 8-8 Calibration error pop-up message . . . . . . . . . . . . . . 216

Figure 8-9 FDO table editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Figure 8-10 Reference manual softkey . . . . . . . . . . . . . . . . . . . . . 218

Figure 8-11 QR code screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

Figure 9-1 Self test complete . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Figure 9-2 Error indicator position . . . . . . . . . . . . . . . . . . . . . . . 224

Figure 9-3 Replacing the fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Figure 9-4 Secure erase status pop-up . . . . . . . . . . . . . . . . . . . 238

22 Keysight N1913/1914A User’s Guide

List of Tables

Table 1-1 Type of Lan Status message . . . . . . . . . . . . . . . . . . . .43

Table 2-1 Measurement units - Single channel meters . . . . . . .56

Table 2-2 Measurement units - Dual channel meters . . . . . . . . .56

Table 2-3 Range of values for window limits . . . . . . . . . . . . . . . .88

Table 2-4 Ranges of recorder output setting . . . . . . . . . . . . . . . .99

Table 2-5 Power Sensor Connection Requirements . . . . . . . . .107

Table 2-6 Equipment list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Table 2-7 Typical specifications . . . . . . . . . . . . . . . . . . . . . . . . .109

Table 3-1 Power sensor connection requirements . . . . . . . . . .135

Table 5-1 8480 Series connection requirements . . . . . . . . . . . .157

Table 5-2 Installed power sensor models . . . . . . . . . . . . . . . . .166

Table 6-1 Power range in the Range setting . . . . . . . . . . . . . .176

Table 6-2 N8480 Series connection requirements . . . . . . . . . .179

Table 6-3 Installed power sensor models . . . . . . . . . . . . . . . . .191

Table 7-1 Power sensor connection requirements . . . . . . . . . .200

Keysight N1913/1914A User’s Guide 23

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24 Keysight N1913/1914A User’s Guide

Keysight N1913/1914A EPM Series Power Meters
User’s Guide

1 Introduction

LXI Class-C Compliant Power Meter 26
Rack Mounting 26
Power Meter and Sensor Capability 27
Conventions Used in this Guide 28
Front Panel Keys and Connections 29
The Display Layout 34
Window Symbols and Pop-ups 37
Rear Panel Connections 40
Using the Instrument Web Interface 41
Making Socket Connection 51
Programming Language Selection (Option 200) 53

This chapter introduces you to the front panel display and instrument Web
browser of the N1913/1914A EPM Series power meter.

25

1Introduction

LXI Class-C Compliant Power Meter

The N1913/1914A EPM Series power meter is a LXI Class C
compliant instrument, developed using LXI Technology. LXI,
an acronym for LAN eXtension for Instrumentation, is an
instrument standard for devices that use the Ethernet (LAN)
as their primary communication interface.

Hence, it is an easy-to-use instrument especially with the usage of an integrated
Web browser that provides a convenient way to configure the instrument’s
functionality.

Rack Mounting

The N1913/1914A can be mounted in a standard 19-inch rack. Rack mount kits
are available as listed below. Support rails are also required for rack mounting.
These are normally supplied with the rack and are not included with the rack
mount options.

If you are installing an instrument on top of the N1913/1914A, ensure that the
instrument does not obstruct the ventilation holes at the top of the N1913/1914A.
If required, use a filler panel above the N1913/1914A to ensure adequate space
for air circulation.

Option Description

N1913A Option 908 Rack mount kit for one instrument

N1913A Option 909 Rack mount kit for two instruments

N1914A Option 908 Rack mount kit for one instrument

N1914A Option 909 Rack mount kit for two instruments

26 Keysight N1913/1914A User’s Guide

Power Meter and Sensor Capability

Your N1913/1914A EPM Series power meter is compatible with the Keysight
E9300 E-Series, E4410 E-Series, 8480 Series, N8480 Series, U2000 Series, and
the U8480 Series thermocouple sensor. However, not all sensor and meter
combinations have the same features or capabilities. The main differences are as
below:

Introduction 1

Features E-Series

E9300

Average power of CW signal ••••••

Average power of modulated signal • ••••

Cal factors stored on EEPROM

Correction factors stored in a 3 MB
Flash memory

>

200 readings/sec ••

[a] Not applicable for N8480 Series power sensors with Option CFT

••

E-Series

E4410

8480

Series

N8480

Series

[a]

•

U2000

Series

••

••

U8480

Series

Specifications

The specifications for the power meter are listed in Chapter 10, "Characteristics

and Specifications," starting on page 241.

Keysight N1913/1914A User’s Guide 27

1Introduction

Softkey

Channel

Channel A

Channel B

Softkey

Conventions Used in this Guide

The following conventions are used throughout this guide.

This symbol and text represents a labeled key on the power meter front panel.

This symbol and text represents a labeled softkey and is used to indicate that you should press the
unmarked key beside the displayed text.

Message This text represents a displayed message.

Parameter This is used to represent a parameter, value, or title.

“Channel” This User’s Guide describes the operation for both the single channel and the dual channel power

meter. To identify channels on a dual channel meter a softkey on an N1913A meter
becomes and on an N1914A.

When you are asked to press “the channel” in a procedure, make sure you select the
relevant channel.

28 Keysight N1913/1914A User’s Guide

Front Panel Keys and Connections

This section briefly describes the functions of the front panel keys and connectors.

These keys are located to the left of the display.

Key Function

Press this key to preset the power-meter to the default setting.

Introduction 1

Press this key to control the power meter from the front panel when it is operating via the remote
interfaces (when Local Lock Out is not enabled).

Press this key to select the upper or lower measurement window. The selected window is highlighted
by a blue line on the right side of the window. Any measurement setup you create is performed in the
selected window.

Press this key to choose windowed, expanded, or full-screen display of a numeric measurement.

Press this key to switch the meter between on and standby. When power is supplied, the
background LED is red. Pressing the key, switches the power meter on and the background LED is
green. When the meter is powered on, the start-up will take approximately 25 seconds.

Keysight N1913/1914A User’s Guide 29

1Introduction

These keys are located along the lower edge of the display.

Key Function

Press this key to access general configuration-menus, such as GPIB address. You can also access
some measurement configuration menus. The measurement screen remains visible.

Press this key to access the channel configuration menus. Channel parameters such as averaging
and offsets are configured from this menu.

Press this key to access the triggering menu. The triggering feature will be made available in future
for power sensors with triggering capability.

Press this key to setup relative measurements or set display offsets. Use this key to configure the
selected measurement.

Press this key to access the measurement display menu. You can choose the displayed
measurement resolution, units and display format.

Use this key together with to configure measurement displays.

30 Keysight N1913/1914A User’s Guide

These keys are all associated with the menu labels and data entry. They are

Confirm

located to the right of the display.

Key Function

Press this key to return to the previous screen. This key also cancels pop-up entry.

Introduction 1

These unmarked keys are called ‘softkeys’ and are referred to by the text on the display next to them.

For example, during a Preset, you are given an option to confirm the command. Press to
continue, that is, press the softkey beside the displayed word ‘confirm’.

The lowest of the unmarked softkeys is used when there is a two page menu to be displayed. For
example, a 1 of 2 is displayed beside the key indicating the first page of a two page menu. Press the
key to access the next page or second page. (A 2 of 2 is displayed).

Keysight N1913/1914A User’s Guide 31

1Introduction

These keys and connectors are associated with the measurement channels and
are located on the right-hand side of the front panel.

Key Function

The arrow keys are used for navigation around the parameter entry screens. The up and down
arrows are used for selecting values from a pop-up list. They are also used to enter text, for
example, table names.

Press this key to select a highlighted field to allow data entry, check a checkbox and terminate
entry of a popup list.

Press this key to access the zero and calibration menus.

Press this key to reset the MAX HOLD and MIN HOLD measurement.

Press these keys to enter numeric values in the pop-up fields, for example, the offset values. To
complete the entry, use the softkey.

32 Keysight N1913/1914A User’s Guide

Connector Function

The power reference is a 1 mW (0 dBm) 50 MHz signal available from a 50 Ω type-N
connector. It is used for calibrating an 8480 or E-Series power sensor and meter
system. If the meter is configured with Option C03, the connector is fitted to the rear
panel. The Green LED beside the connector is lit when the calibrator is turned on.

The sensor input connectors (N1914A shown, the N1913A has one input). If the
meter is configured with Option C02 or C03, the connectors are fitted to the rear
panel and the front panel connectors are retained.

If the meter is configured with Option 201, one USB Type A port is fitted to the front
panel (Channel C) and another Type A port (Channel D) to the rear panel.

Introduction 1

Keysight N1913/1914A User’s Guide 33

1Introduction

Disp Type

1

2

3

4

5

7

6

The Display Layout

Figure 1-1 shows the display layout when two windows are configured in dual

numeric mode.

Other display formats are available by pressing , .

Figure 1-1 Dual numeric display

1 The status reporting line displays messages and the control status of the

power meter.

For example, the status can be either RMT (remote, GPIB, USB or LAN
operation) or LCL (local, front panel operation). The message fields indicate
ERR for any error conditions that occur or informing you to Please Zero the
power sensor.

2 The measured channel is shown with a 8480 Series or E-Series power sensor

connected.

3 This field displays the menu title.

For example, Channel Setup or press and the Zero/Cal menu is

displayed.

4 The blue highlight on the right hand side of the window shows it is the

currently selected measurement display line. This measurement line is the
Upper Window/Upper Measurement.

5 The available softkey labels are displayed in these three fields. Additionally,

settings associated with the labeled function are displayed under the label.

34 Keysight N1913/1914A User’s Guide

Introduction 1

8

9

10

11

12

Softkeys labels that are grayed out cannot be selected.

6 This displays the measurement units, either dBm or Watts (W).

7 This displays the number of pages in the current menu. For example, 1 of 2

indicates that there are two pages in the menu and the first page is currently
displayed. Pressing the softkey displays the next page, indicated by 2 of 2
(press the softkey to display the previous menu page).

Figure 1-2 Single numeric and analog display

Figure 1-2 shows the default display mode of two measurement windows.

8 The channel measurement frequency.

9 The upper window is configured to show a single numeric display.

10 The lower window is configured to show an analog meter which displays the

measurement result and the meter scaling.

11 This displays the connected sensor, the offset value, and the acquisition mode

on the channel. On dual channel models, it shows for both channels.

12 The blue highlight on the right hand side of the window shows it is the

currently selected measurement display line.

Using the , , or keys, you can change the measurement window

selection.

Using the key on numeric measurement results window, you can
choose either two rectangular windows, a single enlarged window, or a full

screen display. The display style is applied to the currently selected window or
measurement line.

Keysight N1913/1914A User’s Guide 35

1Introduction

18

13

17

14

15

16

Figure 1-3 Full screen numeric display

Figure 1-3 shows a single numeric full screen displaying a relative result.

13 This field displays Minimum Hold if range hold is set to minimum.

14 The information in this field is displayed on two lines and depends on the

sensor type, sensor calibration table, frequency dependent offset table
currently selected, and the measurement frequency.

15 This field displays Dty Cyc if a duty cycle is set.

16 This field displays Ofs if an offset is set.

17 This field displays Rel if relative mode is on.

18 This field indicates the measurement result is beyond the configured upper or

lower limit. If the measurement is within the limits this field is empty. If the
measurement result is less than the minimum limit set, Undr Lmt is displayed.
If the measurement result is more than the maximum limit set, Over Lmt is
displayed.

36 Keysight N1913/1914A User’s Guide

Window Symbols and Pop-ups

There are several different graphic symbols and pop-up windows that can occur
on the power meter display. These can occur for a variety of reasons, for example:

– An error or warning occurs

– You are required to wait while the power meter carries out a procedure

– You are required to select an entry from a list

– You are required to enter a numeric value

There are three different colors used to signify the pop-up status:

– Green - used to allow data entry

– Orange - used to display information

– Red - used to display an error

Warning Symbol Pop-up

The warning symbol is displayed either in a pop-up window or directly in the
measurement window when such an event occurs. A pop-up window is displayed
for approximately two seconds. The text in the pop-up window gives details of the
warning type, for example, to indicate that a power sensor has insufficient
bandwidth or a previous entered frequency value in a table. Depending on the
severity of the warning, the pop-up may be displayed in orange or red.

Introduction 1

Keysight N1913/1914A User’s Guide 37

1Introduction

Wait Symbol Pop-up

The wait symbol is displayed when the power meter is carrying out a procedure
and no action is required from you. The symbol appears in a pop-up window. It
may appear, for example, during a calibration.

Confirm Symbol Pop-up

This type of pop-up window is displayed when you are required to press Confirm
to verify your previous selection. For example, prior to a Save being carried out.

Numeric Entry Pop-up

This type of pop-up window is displayed when you need to modify numeric data.
The numeric keys allow you to enter the value.

38 Keysight N1913/1914A User’s Guide

Text Entry Pop-up

This type of pop-up window is displayed when you need to modify alphanumeric
data such as table names. The up/down arrow keys increment and decrement the
alphanumeric digit that the cursor is currently positioned. The left/right arrow
keys move the cursor to another alphanumeric digit.

List Pop-up

This pop-up window is displayed when you are required to select an entry from a
list. Use the up/down arrow keys to highlight your choice. Press select to
complete the entry.

Introduction 1

Keysight N1913/1914A User’s Guide 39

1Introduction

7

8

6

9

4

3

2

1

5

Rear Panel Connections

No. Connections

1 VGA Output (Option 201)

2 Ground Connector

3 USB Type A port

4 Recorder 1/2

Recorder output (two outputs are fitted to dual channel meters) connections are made via BNC connectors. This
output produces a DC voltage that corresponds to the power level of the channel input.

5AC Inlet

This power meter has an auto configuring power supply. This allows it to operate over a range of voltages without
manually being set to a certain voltage.

6 Trig In/Trig Out

Trigger input and output connections are made via BNC connectors.

7 USB Mini-B port

This USB port is used only for remote interface connection.

8LAN

9GPIB

This connector allows the power meter to be controlled remotely using the General Purpose Interface Bus.

40 Keysight N1913/1914A User’s Guide

Using the Instrument Web Interface

NOTE

You can communicate with the N1913/1914A EPM Series power meters using the
Web interface.

The instrument Web interface can be accessed from Keysight Connection Expert
as shown in Figure 1-4.

Alternatively, the instrument Web interface can also be accessed directly from a
Web broswer by entering the instrument’s IP address or hostname in the
browser’s ‘address’ window.

Introduction 1

Figure 1-4 Accessing the instrument Web interface

Keysight N1913/1914A User’s Guide 41

1Introduction

NOTE

An example of the instrument Web interface (Welcome Page) is shown in

Figure 1-5.

Figure 1-5 N1914A EPM Series power meter Web interface

(Welcome Page)

You can control the instrument via GPIB, LAN, and USB connection. The
connection parameters can be found on the Welcome Page. For example, SCPI
TCPIP socket port (5025), SCPI Telnet port (5024), VISA TCPIP Connect String,
VISA USB Connect String, and GPIB address are shown. Click Advanced
Information… to display more information about the instrument.

– The instrument has an embedded Web server, which is listening on port 80 to

serve Web pages.

– The Web pages can be browsed using Web browser such as Internet Explorer

and Mozilla Firefox.

Instrument on the network can be physically identified from the blinking message
on front panel screen by clicking Turn On Front Panel Identification Indicator on
the Welcome Page.

42 Keysight N1913/1914A User’s Guide

Introduction 1

“IDENTIFY” message to
blink when the front panel
identification indicator is
turned on.

Remote Interfaces

When the front panel identification indicator is turned on, a blinking “IDENTIFY”
message is displayed on the screen of the front panel. See Figure 1-6. The
“IDENTIFY” message will blink to identify the instrument until you click Turn Off

Front Panel Identification Indicator.

Figure 1-6 Message to identify the instrument

When the instrument is configured to LAN, the Lan Status on
screen will show the LAN error condition and status of the LAN configuration
connection. There are six types of Lan Status messages that may occur. See

Figure 1-1. See also Figure 1-7 for the example of Lan Status message.

Type of message Description

Lan: No Fault
Status: Initialized

Lan: No Fault
Status: Running

Lan: Faul t
Status: Initialization failed

Lan: Faul t
Status: Disconnected

Keysight N1913/1914A User’s Guide 43

Table 1-1 Type of Lan Status message

– A valid IP address is successfully obtained using selected LAN configuration

and the network state is initialized.

– A valid IP address is successfully obtained using selected LAN configuration,

while network is running.

– IP conflict occurs, or
– IP address failed to be obtained using selected LAN configuration, or
– No LAN configuration is selected.

– LAN cable is unplugged.

1Introduction

NOTE

Lan: –
Status: Restarting

Lan: DHCP Not Available
Status: Running

Figure 1-7 Example of Lan Status message

For more details on remote interface configuration, refer to N1913/1914A EPM
Series Power Meters Installation Guide.

– Restart the network and try to obtain an IP address using selected LAN

configuration.

– Unable to obtain IP address from DHCP server (if user select DHCP

configuration)

– IP address obtained from Auto-IP or manual configuration.

44 Keysight N1913/1914A User’s Guide

Using the Remote Front Panel

NOTE

The instrument Web interface also provides a virtual front panel interface that can
be used to control the power meter remotely.

1 On the left of the Welcome Page, select Browser Web Control. The remote

front panel appears.

Introduction 1

2 Click the front panel keys to control the instrument.

Java™ must be installed on the controlling PC for remote front panel operation.

Keysight N1913/1914A User’s Guide 45

1Introduction

Editing the Instrument’s LAN Settings

Once communication path to the instrument has been established, the
instrument’s LAN configuration can be viewed and modified using the Web
interface.

On the Welcome Page, click View and Modify Configuration. This opens the
configuration window shown in Figure 1-8.

Figure 1-8 Viewing LAN configuration settings from the Web interface

To edit parameters shown, click Mod ify Configuration. The Enter Password
dialog box appears as shown in Figure 1-9.

46 Keysight N1913/1914A User’s Guide

Introduction 1

NOTE

Remote Interfaces

1 of 2

LAN Reset

NOTE

LAN Reset

NOTE

Figure 1-9 Password security dialog box

Click the Submit (accept the default password) and the window opens as shown
in Figure 1-10. The default password is “keysight”.

A LAN reset needs to be performed to ensure that the password is reset to
default. See LAN reset procedure as below.

Procedure:

– Press , to display the Remote Interfaces screen.

– Press softkey to display the second page of the Remote I/F menu.

– Press softkey to reset the LAN settings to default.

When softkey is pressed, it will also change the GPIB address to
default.

You can change the password from the Configuring your N1914A Power Meter
window as shown in Figure 1-10. Scroll down the Parameter column until you
locate the Change Password parameter.

Keysight N1913/1914A User’s Guide 47

1Introduction

Figure 1-10 Changing the instrument LAN interface configuration

48 Keysight N1913/1914A User’s Guide

Capturing the Screen Image

To save the instrument’s display from the Web interface:

1 On the left of the Welcome Page, select Get Image. The screen image will be

displayed.

Introduction 1

2 Right-click on the image and select Save Picture As….

3 Select a storage location for the image file and click Save.

The image is captured as a Bitmap (BMP) file, to the default file name
display.bmp.

Keysight N1913/1914A User’s Guide 49

1Introduction

Getting the Instrument Data

The instrument Web interface allows you to transport measurement readings from
the instrument to PC applications such as word and spreadsheet applications.

To get the instrument data:

1 On the left of the Welcome Page, select Get Data. The Get Data Web page will

be displayed.

2 Select the window/measurement type of the instrument.

3 Enter your desired count value (up to 1000 only) of the data and click Get

Data. The data will be displayed in a text box.

4 Copy and paste the data in your intended PC application.

50 Keysight N1913/1914A User’s Guide

Making Socket Connection

2

3

4

5

6

7

The following steps describe how the power meter can be remotely connected via
socket connection:

1 Right-click the Keysight IO Libraries icon on the taskbar and select

Keysight Connection Expert.

Introduction 1

Figure 1-11 Manual Configuration window

2 Click Manual Configuration on the Keysight Connection Expert window.

3 Click LAN instrument.

4 Enter the Hostname or IP Ad dress and TCPIP Interface ID.

5 Select Socket.

6 Click Test This VISA Address to test if the instrument is present.

Keysight N1913/1914A User’s Guide 51

7 Click Accept. You will then return to the Keysight Connection Expert window.

Your power meter is successfully connected via socket connection.

1Introduction

Figure 1-12 Power meter successfully connected via socket connection

52 Keysight N1913/1914A User’s Guide

Programming Language Selection (Option 200)

NOTE

The programming language selection is available as an orderable option. For
N1913A, you can use SCPI, HP 436A, or HP 437B programming language to
program the power meter from the remote interface. For N1914A, you can use
either SCPI or HP 438A programming language to program the power meter from
the remote interface. The default language is SCPI when the power meter is
shipped from the factory.

The power meter complies with the rules and regulations of the 1996.0 version of
SCPI (Standard Commands for Programmable Instruments). You can determine
the SCPI version with which the power meter is in compliance by sending the
SYSTem:VERSion? command from the remote interface. You cannot query the
SCPI version from the front panel.

The language selection is stored in non-volatile memory and does not change
when power has been off or after a remote interface reset.

To select the interface language from the front panel (N1913A),

1 Press , Remote Interfaces, 1 of 2, and Command Set.

2 Select the language from HP 436A

[1]

, HP 437B

[1]

, and SCPI

Introduction 1

[2]

.

To select the interface language from the front panel (N1914A),

1 Press , Remote Interfaces, 1 of 2, and Command Set.

2 Select the language from HP 438A

[1]

, and SCPI

[2]

.

To select the interface language from the remote interface, use the
SYSTem:LANGuage command.

Option 200 can only support 8480 series, N8480 series CFT-option, and E4412/
3A power sensors.

[1] HP 436A, HP 437B, and HP 438A language modes are not compatible with LAN or USBTM remote

interface.

[2] SCPI is the default factory setting. License is needed for the other languages to be available.

Keysight N1913/1914A User’s Guide 53

1Introduction

THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

54 Keysight N1913/1914A User’s Guide

Keysight N1913/1914A EPM Series Power Meters
User’s Guide

2 General Power Meter

Functions

Setting the Units of Measurement 56
Setting the Measurement Frequency 57
Setting the Resolution 58
Making Relative Measurements 59
Setting Offsets 61
Setting Measurement Averaging 73
Step Detection 75
Measuring Pulsed Signals 76
Setting External Trigger for Average Power Measurement 79
Setting Measurement Limits 87
Single Function Measurement 92
Combined Measurement 93
Max Hold/Min Hold 94
Recorder Output 97
Saving and Recalling Power Meter States 100
Zeroing and Calibrating the Power Meter 102
Adapter Test Procedure 109
Secure Blank 113
Backlight Intensity Control 118
Memory Erase/Secure Erase 119
VGA Output (Optional) 122
Warm Start 123
Battery Information (Optional) 124
Setting the Cable Short/Long 130

This chapter describes the general operation of the N1913/1914A EPM Series
power meters.

55

2 General Power Meter Functions

Units

dBmWdB

%

NOTE

Setting the Units of Measurement

The Units menu is used to select the measurement units for the currently selected
window. These can either be logarithmic (dBm or dB) or linear (Watt or %) units.

Presetting ( ) the power meter sets the measurement units to dBm
(logarithmic units). Table 2-1 and Table 2-2 show units that are applicable to each

measurement mode.

Press , . Select the unit of measurement from , , , and

. Softkeys which cannot be selected in your particular mode of operation are

grayed out.

When the measurement unit is set to Watt (W), it is possible that negative power
results are displayed when measuring low power levels.

Tab le 2-1 Measurement units - Single channel meters

Measurement Mode Relative Mode Off Relative Mode On

Log dBm dB

Linear Watt %

Tab le 2-2 Measurement units - Dual channel meters

Measurement Mode Relative Mode Off Relative Mode On

Ratio Log dB dB

Linear % %

Difference Log dBm dB

Linear Watt %

56 Keysight N1913/1914A User’s Guide

Setting the Measurement Frequency

MHz

GHz

Entering the frequency of the RF signal you are measuring optimizes the accuracy
and minimizes measurement uncertainty, especially when making comparative
measurements between signals.

Procedure

Set the measurement frequency as follows:

1 Press . On dual channel meters select the required channel.

2 Use the and keys to highlight the Frequency value field and press

to display the Frequency pop-up. Use the numeric keypad to enter the

required value in the Frequency pop-up window.

General Power Meter Functions 2

Figure 2-1 Frequency pop-up

3 Confirm your choice by pressing or .

4 Press key to close the Channel Setup screen.

Keysight N1913/1914A User’s Guide 57

2 General Power Meter Functions

Resolution

Resolution

Setting the Resolution

The resolution of each of the power meter’s numeric type windows can be set to
four different levels (1, 2, 3 or 4).

These four levels represent:

– 1, 0.1, 0.01, 0.001 dB respectively if the measurement suffix is dBm or dB.

– 1, 2, 3 or 4 significant digits respectively if the measurement suffix is W or %.

The default value is 0.01 dB (3 digits).

To set the resolution on the currently selected window:

1 Press . The current setting of the resolution is highlighted under the

softkey.

2 To change this setting, press repeatedly until the required

resolution setting is highlighted.

58 Keysight N1913/1914A User’s Guide

Making Relative Measurements

Meas Select

Relative

setting field

Relative field

Original result

Result field

Selected window/
measurement

Relative mode enables comparison of a measurement result to a reference value.
The relative reading, or difference, can be displayed in either dB or % terms. When
the measurement result is displayed in % a prefix multiplier may be shown.

Procedure

1 Press to display the Measurement Setup menu.

Figure 2-2 shows a Measurement Setup display and the relative measurement

items labeled.

2 Select the window you wish to set a reference value on by pressing the

key. The currently selected window/measurement is displayed.

3 Use the and keys to highlight the Relative setting field.

General Power Meter Functions 2

Figure 2-2 Typical relative measurement display

4 Press to check the Relative setting field.

5 Confirm that the power meter is measuring the signal you want to use as the

reference. This is displayed under the Result field.

6 Press the , , key to highlight the Rel field.

Keysight N1913/1914A User’s Guide 59

2 General Power Meter Functions

NOTE

Relative indicator

NOTE

7 Press and the original result value will appear on the right hand side of

the Rel check field.

8 The relative value displayed under Result field will change as the measured

signal varies.

If you return the power meter to display the numeric display, a Rel symbol will
be displayed in the measurement window it is applied to.

Figure 2-3 Numeric display

The Rel symbol is not displayed when the associated measurement is displayed
in Dual Numeric or Analog format.

60 Keysight N1913/1914A User’s Guide

Setting Offsets

Channel Functions

Window Functions

Display

Relative

Offset

Channel A

Upper Window

Lower Window

Display

Relative

Offset

Display

Relative

Offset

Display

Relative

Offset

Measurement Highway

Freq Dep
Offset

Channel
Offset

Cal
Factor

Channel B

Freq Dep
Offset

Channel
Offset

Cal
Factor

Channel C

Freq Dep
Offset

Channel
Offset

Cal
Factor

Channel D

Freq Dep
Offset

Channel
Offset

Cal
Factor

The power meter can be configured to compensate for a signal loss or gain in your
test setup. The power meter allows you to apply offsets at three different points in
the measurement path.

General Power Meter Functions 2

Figure 2-4 Simplified measurement path

Keysight N1913/1914A User’s Guide 61

2 General Power Meter Functions

Offsets

Offset value field

Offset setting field

Figure 2-4 shows that how you can apply a Channel Offset or a Frequency

Dependent Offset prior to any mathematical functions. These allow you to

compensate each channel individually. An overall offset can be applied if required
using the Display Offset.

Setting Channel Offsets

This gain or loss is applied to the measured power before any mathematical
functions, display offsets or relative functions are included.

Offsets are entered in dB and the range is –100 dB to +100 dB.

The equivalent range in % is from 0.0000000001% to 10000000000%.

A positive value compensates for a loss and a negative value compensates for a
gain.

Procedure

To enter a channel offset:

1 Press to display the Channel Setup screen. Confirm the channel

requiring setup is displayed.

2 Press to display the Offsets Setup.

3 Use the and keys to highlight the Offset setting field.

4 Press to check the Offset setting field.

Figure 2-5 Typical channel offset display

5 Press to highlight the Offset value field and press to display the

Offset pop-up. Use the numeric keypad to enter the required value in the
Offset pop-up window.

62 Keysight N1913/1914A User’s Guide

6 Confirm your choice by pressing .

dB

Offset indicator

NOTE

Meas Select

7 Press key to complete the offset entry. If either a channel or a display

offset is set, the Ofs indicator is displayed.

Figure 2-6 Channel offset indicator

The Ofs symbol is not displayed when the associated measurement is displayed
in Dual Numeric or Analog format.

Setting Display Offsets

General Power Meter Functions 2

This gain or loss is applied to the measured power after any channel offsets or
mathematical functions have been included.

Offsets are entered in dB and the range of values is –100 dB to +100 dB. A positive
value compensates for a loss, and a negative value compensates for a gain.

Procedure

Enter a display offset on the currently selected window:

1 Press to display the Measurement Setup screen.

2 Select the window you wish to set the offset value on by pressing the

key. The currently selected window/measurement is displayed.

3 Use the and keys to highlight the Offset setting field.

4 Press to check the Offset setting field.

Keysight N1913/1914A User’s Guide 63

2 General Power Meter Functions

Selected window/
measurement

Offset value field

Offset setting field

dB

NOTE

Figure 2-7 Typical display offset display

5 Press to highlight the Offset value field and press to display the

Display Offset pop-up. Use the numeric keypad to enter the required value in

the Offset pop-up window.

64 Keysight N1913/1914A User’s Guide

6 Confirm your choice by pressing . Press key to complete the offset

entry.

The Ofs indicator is displayed if Display Offset is selected.

Setting Frequency Dependent Offsets

Tab les

Meter

Freq. Dep. Offset

Tab les

Sensor ChC

Freq. Dep. Offset

Tab les

Sensor ChD

Freq. Dep. Offset

Frequency dependent offset tables provide a quick and convenient method of
compensating for frequency related changes in the response of your test system.
Note that when selected, frequency dependent offset corrections are applied IN
ADDITION to any correction for sensor frequency response.

The power meter is capable of storing 10 frequency dependent offset tables with a
maximum of 80 frequency points each.

To use frequency dependent offset tables:

1 Select the table to be applied to a channel. Refer to “Setting Frequency

Dependent Offsets” on page 65 for further information. If you require to edit

the table refer to “Editing Frequency Dependent Offset Tables” on page 68 for
further information.

2 If an 8480 Series, N8480 Series, an E-Series, or an U2000 Series sensor is

used, zero and calibrate the power sensor. The reference calibration factor
used during the calibration is automatically set by the power meter from the
sensor calibration table (if selected).

3 Specify the frequency of the signal you want to measure. The calibration

factor/offset is automatically set by the power meter from the sensor
calibration table (if selected) and the frequency dependent offset table. Refer
to “Procedure” on page 66 for further information.

4 Make the measurement.

General Power Meter Functions 2

Keysight N1913/1914A User’s Guide 65

Selecting a Frequency Dependent Offset Table

You can select a frequency dependent offset table from the key menu
followed by , , and for Channel A or Channel B.

For Channel C, you can select the frequency dependent offset table from the

key menu followed by , , and .

For Channel D, you can select the frequency dependent offset table from the

key menu followed by , , and .

2 General Power Meter Functions

NOTE

Offsets

Tab les

Freq. Dep. Offset

Offsets

Tab le

A Table

B Table

On

The State column indicates if any frequency dependent offset tables are currently
selected. The Offset Tables screen is shown in Figure 2-8.

You can also view which FDO table is being used by pressing the ,

and use the and keys to highlight the FDO Table setting field

and press to display the table.

Procedure

Select an offset table as follows:

1 Press, either:

a , , .

b , and use the and keys to highlight the FDO Table

setting field and press to display the table.

Figure 2-8 Frequency dependent offset tables display

2 Use the and keys to highlight one of the 10 table titles and press

( or for dual channel) to highlight .

66 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

Tab le

Offset Table A Selected

NOTE

When no data is contained in the highlighted table, the key is disabled
(grayed out).

3 Press to complete the selection of the offset table.

4 Press again to display the measurement screen. Figure 2-9 shows

which offset table is selected.

Figure 2-9 Frequency dependent offset indicator

Keysight N1913/1914A User’s Guide 67

5 To change the frequency, press and use the and keys to

highlight the Frequency field.

6 Press to display the Frequency pop-up window. Use the numeric

keypad to enter the required value in the Frequency pop-up window.

7 To confirm your choice, press the appropriate unit softkey.

8 Connect the power sensor to the signal to be measured.

9 The measurement result, including offset, is now displayed.

If the measurement frequency does not correspond directly to a frequency in the
sensor calibration table (if selected) and the frequency dependent offset table
being used, the power meter calculates the calibration factor and offset using
linear interpolation. If you enter a frequency outside the frequency range defined
in the sensor calibration table or the frequency dependent offset table, the
power meter uses the highest or lowest frequency point in the appropriate table
to set the calibration factor and offset.

2 General Power Meter Functions

Tab les

Freq. Dep. Offset

NOTE

Tab les

Freq. Dep. Offset

Edit Table

Editing Frequency Dependent Offset Tables

There are ten frequency dependent offset tables named CUSTOM_A through
CUSTOM_J. They are empty of any data when the power meter is shipped from
the factory.

You cannot delete any of the 10 existing frequency dependent offset tables or
create any additional tables. However, you can enter values into the 10 existing
tables. Each frequency dependent offset table can contain a maximum of 80
frequency points.

To view the frequency dependent offset tables currently stored in the power

meter, press , , . The Frequency Dependent
Offset Tables screen is displayed as shown in Figure 2-8.

Editing frequency dependent offset tables requires the following steps:

1 Identify and select the table you want to edit

2 Rename the table

3 Enter the frequency and offset pairs

4 Save the table

68 Keysight N1913/1914A User’s Guide

Procedure

First, select the table you want to edit as follows:

A frequency in the range of 0.001 MHz to 1000.0 GHz can be entered. A
calibration factor in the range of 0.0000000001 to 10000000000 can be entered.

1 Press , , to display the Offset Tbls screen.

2 Choose the table you want to edit using the and keys. Press

to display the Ed it Offset screen as shown in Figure 2-10.

General Power Meter Functions 2

Change

Insert Char

Delete Char

Enter

Figure 2-10 “Edit Offset” display with data added

3 Highlight the table title using the and keys. Press and use

the , , and keys to select and change the characters in the

Tab le Name pop-up to create the name you want to use.

Figure 2-11 Edit table title pop-up

– Pressing adds a new character to the right of the selected

character.

– Pressing removes the selected character.

4 Press to complete the entry.

Keysight N1913/1914A User’s Guide 69

2 General Power Meter Functions

NOTE

Insert

Change

GHz

MHz

Change

%

Done

The following rules apply to naming sensor calibration tables:

– The name must consist of no more than 12 characters.

– All characters must be upper or lower case alphabetic characters, or numeric

(0-9), or an underscore (_).

– No other characters are allowed.

– No spaces are allowed in the name.

Enter (or edit) the frequency and offset pairs as follows:

1 Press to add a new frequency value (or press to edit). Use the

numeric keypad to enter the required value in the Frequency pop-up window.
Complete the entry by pressing the , keys.

2 Enter the new offset value (or press to edit). Use the numeric keypad

to enter the required value in the Offset pop-up window. Complete the entry by
pressing the key.

Figure 2-12 Changing offset unit

3 Continue adding/editing values until you have entered all the data you require.

4 When you have finished editing the table press to save the table.

70 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

1 of 2

Offset Unit

dB

1 of 2

Offset Unit

%

If you measure a signal with a frequency outside the frequency range defined in
the frequency dependent offset table, the power meter uses the highest or lowest
frequency point in the frequency dependent offset table to calculate the offset

Selectable Frequency Dependent Offset Unit (dB or %)

The offset in dB range is from –100 dB to +100 dB.

The equivalent range in % is from 0.0000000001% to 10000000000%.

Once the offset unit is selected, it will be applied to all the offsets in the selected
table and also to the remaining nine tables.

To change the offset unit to dB, press , , and .

To change the offset unit to %, press , , and .

Keysight N1913/1914A User’s Guide 71

2 General Power Meter Functions

If the selected offset unit is %, the display of the offset will be in engineering unit
only if the percentage value is less than 0.01% or more than 999%. The format of
the display in engineering unit for an offset greater than 999% will be shown as
follows,

xxx. yyyyyyyyy e+z

– There is a maximum of three numbers before the decimal point indicated

by x.

– y is optional if there are non-zero numbers after the decimal point.

For example,

– 123478202 will be displayed as 123.478202 e+6

– 10000 will be displayed as 100 e+2.

The format of the display in engineering unit for an offset less than 0.01% will be
as follows,

x. yyyyyyyyy e-z

– The first leading non-zero number, x, is placed before the decimal point.

– y is optional if there are non-zero numbers after the decimal point.

For example,

– 0.009876 will be displayed as 9.876 e-3

– 0.0001 will be displayed as 1e-4.

Figure 2-13 Offset display in engineering unit (when the selected unit is %)

72 Keysight N1913/1914A User’s Guide

Setting Measurement Averaging

10 dB

10 dB

Minimum sensor power

Maximum sensor power

Power Sensor

Dynamic Range

10 dB

10 dB

1234

1 8 128 128

Resolution Setting

Number of Averages

1 1 16 256

11232

11116

1118

The power meter uses a digital filter to average power readings. The number of
readings averaged can range from 1 to 1024. This filter is used to reduce noise,
obtain the desired resolution and to reduce the jitter in the measurement results.
Increasing the value of the measurement average reduces measurement noise.
However, the measurement time is increased. You can manually select the
measurement average or you can set the power meter to auto measurement
average mode. The default is AUTO.

When the auto measurement average mode is enabled, the power meter
automatically sets the number of readings averaged together to satisfy the
filtering requirements for most power measurements. The number of readings
averaged together depends on the resolution setting and the power level
currently being measured.

General Power Meter Functions 2

Figure 2-14 Typical averaged readings

Keysight N1913/1914A User’s Guide 73

Figure 2-14 shows the typical number of averages for each range and resolution

when the power meter is in auto filter mode and is set to normal speed mode.
N1913/1914A EPM Series power meters recognize different sensor types when
they are connected, and configure suitable averaging automatically.

2 General Power Meter Functions

Enter

Resolution is a measurement display function and not a channel function. In the
case where a channel is set up in both the upper and lower window and the
resolution settings are different, the highest resolution setting is taken to calculate
the averaging number.

These four resolution levels represent:

– 1, 0.1, 0.01, 0.001 dB respectively if the measurement suffix is dBm or dB.

– 1, 2, 3 or 4 significant digits respectively if the measurement suffix is Ω or %.

Procedure

Set measurement averaging as follows:

1 Press . On dual channel meters select the required channel. The

current setting is shown in the Meas Avg field (

Channel Setup screen. The default is

2 Use the and keys to select the Filter setting field.

3 Press and use the and to step through the available settings.

If you have selected AUTO or OFF proceed at step 7. If you have selected MAN
proceed as follows.

AUTO, MAN, or OFF) on the

AUTO.

4 Use the key to select the Meas Avg: value field.

5 Press to display the Meas Avg Count pop-up.

Figure 2-15 Meas Avg Count pop-up

6 Use the numeric keys to enter the required value and press .

7 Press key to close the Channel Setup screen.

74 Keysight N1913/1914A User’s Guide

Step Detection

To reduce the filter settling time after a significant step in the measured power the
filter can be set to re-initialize upon detection of a step increase or decrease in the
measured power. Step detection can be set in both manual and automatic
measurement average modes.

Procedure

Set step detection as follows:

1 Press . On dual channel meters select the required channel.

2 Use the and keys to select the Step Detect setting field.

3 Press to check the step detection to on or off.

4 Press key to close the Channel Setup screen.

General Power Meter Functions 2

Keysight N1913/1914A User’s Guide 75

2 General Power Meter Functions

NOTE

Power

Time

A

B

Duty Cycle =

A
B

Measuring Pulsed Signals

The power meter can be used to measure the power of a pulsed signal. The
measurement result is a mathematical representation of the pulse power rather
than an actual measurement (assumes constant peak power). The power meter
measures the average power of the pulsed input signal and then divides the
measurement result by the duty cycle value to obtain the pulse power reading.
The allowable range of values is 0.001% to 100%. The default value is 1.000%.

If duty cycle is enabled, then Dty Cyc is displayed.

Pulse measurements are not recommended using Keysight E4412A and E4413A
power sensors.

An example of a pulsed signal is shown in Figure 2-16.

Figure 2-16 Pulsed signal

76 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

Offsets

Duty cycle
setting field

Duty cycle
value field

%

Duty cycle
indicator

Procedure

Set duty cycle as follows:

1 Press to display the Channel Setup screen. Confirm the channel

requiring setup is displayed.

2 Press to display the Offsets Setup.

3 Use the and keys to highlight the Duty Cycle setting field.

4 Press to check the Duty Cycle setting field.

Figure 2-17 Duty cycle setting

5 Press to highlight the Duty Cycle value field and press to display

the Duty Cycle pop-up. Use the numeric keypad to enter the required value in
the Duty Cycle pop-up window.

Keysight N1913/1914A User’s Guide 77

6 Confirm your choice by pressing .

7 Press key to complete the duty cycle entry. The Dty Cyc indicator is

displayed as shown in Figure 2-18.

Figure 2-18 Duty cycle indicator

2 General Power Meter Functions

NOTE

Pulse power averages out any aberrations in the pulse such as overshooting or
ringing. For this reason, it is called pulse power and not peak power or peak
pulse power.

In order to ensure accurate pulse power readings, the input signal must be
pulsed with a rectangular pulse. Other pulse shapes (such as triangle, chirp, or
Gaussian) will cause erroneous results.

The pulse power on/off ratio must be much greater than the duty cycle ratio.

78 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

Setting External Trigger for Average Power Measurement

There are two modes featured in triggered average power measurement

– Power sweep mode

– Frequency sweep mode

These modes are used to eliminate the need for lengthy test routines, while
increasing measurement throughput by reducing overhead of communication with
the controller. The sweep feature allows you to make power measurement by
quickly stepping through a series of frequencies or power levels. Configuration
shown in Figure 2-19 illustrates the triggering connection required to synchronize
power meter measurement to the power source settings.

Trigger delay and trigger holdoff are both not applicable when the power meter
is set to power sweep mode or frequency sweep mode.

Keysight N1913/1914A User’s Guide 79

2 General Power Meter Functions

NOTE

TRIG

IN

TRIG

IN

TRIG
OUT

TRIG
OUT

Power Meter

Power Source

Average Power Sensor

(optional connection)

Power Sweep Mode

Power sweep is generally used in power level calibration setup where the
frequency is fixed (CW frequency), and the amplitude of the power source signal is
swept. This mode can be used to characterize the flatness, linearity or gain
compression of a device under test.

This feature is only available when 8480 Series, N8480 Series, E-Series E4410, or
E-Series E9300 sensor is connected.

Procedures

1 Connect sensor to a power source.

2 Connect power meter TRIG OUT to power source TRIG IN using a BNC cable.

The same connection is applied for power source TRIG OUT to power meter
TRIG IN.

Figure 2-19 TRIG IN and TRIG OUT connection diagram between power

3 Press . The Channel Setup screen displays as below.

meter and power source

80 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

Acqn

Sing Trig

Cont Trig

Sing Trig

Cont Trig

Settings

Figure 2-20 Channel Setup display

When 8480 Series, N8480 Series, E-Series E4410, E-Series E9300 or U2000
Series sensor is connected, Sensor Mode is set to AVG only by default.

4 Press . The Trigger menu is displayed.

5 Press softkey to configure the trigger.

6 Select either or .

– is a single shot mode. After triggering, the measurement is

halted, and the symbol is displayed. You can start another

measurement by pressing the key.

– is a continuous trigger mode. The symbol or is displayed.

7 Press to configure the remaining trigger parameters. The trigger

Settings menu consists of two pages. Figure 2-21 shows page 1 and

Figure 2-22 shows page 2.

Keysight N1913/1914A User’s Guide 81

2 General Power Meter Functions

External trigger source

Source

Ext

1 of 2

Output

On

Slope

+

–

Figure 2-21 Trigger setting menu 1 of 2

Figure 2-22 Trigger setting menu 2 of 2

8 Press and will be automatically enabled.

9 Press , and to allow a TTL level high to be produced at the

rear panel TRIG OUT BNC port when the meter is triggered upon a completed
measurement.

10 Press and select or to set the trigger edge.

11 Set the trigger buffer size by sending SENSE:BUFFer:COUNt <buffer_size>

command to meter using remote interface.

82 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

NOTE

Refer to the N1913/1914A EPM Series Power Meters Programming Guide for the
commands usage details.

Example of command set:

BUFF:COUN 100

The power meter can be remotely controlled by LAN, USB and GPIB (IEEE488)
programming interfaces. Refer to N1913/1914A EPM Series Power Meters
Installation Guide for details.

12 Press or to setup measurement setting such as measurement

averaging, measurement frequency, offsets, duty cycle and so forth. Refer to

“General Power Meter Functions” on page 55 for the setup procedures.

13 Send *OPC (OPeration Complete) command to meter to set the operation

complete bit in the Standard Event Status register when all pending device
operations are completed.

14 Set the meter to continuous trigger mode by sending INITiate:CONTinuous

ON command to meter.

15 Configure and set the required power sweep range and step on the power

source accordingly.

16 Set the power source trigger input and trigger output, then start sweeping.

17 Poll the status of the power meter by sending *ESR?. *ESR? will return a 1

when buffering is completed. Use FETCh? to retrieve all the buffered
measurement.

Keysight N1913/1914A User’s Guide 83

2 General Power Meter Functions

NOTE

NOTE

Acqn

Sing Trig

Cont Trig

Settings

Source

Ext

1 of 2

Output

On

Frequency Sweep Mode

Frequency sweep is generally used in a frequency response calibration system
where the amplitude is fixed, and the frequency of the power source signal is
swept. This mode can be used to determine the frequency response of a device
under test.

This feature is only available when N8480 Series, E-Series E4410, or E-Series
E9300 sensor is connected.

Procedures

1 Connect sensor to a power source.

2 Connect power meter TRIG OUT to power source TRIG IN using a BNC cable.

The same connection is applied for power source TRIG OUT to power meter
TRIG IN. See Figure 2-19.

3 Press . The Channel Setup displays as shown in Figure 2-20.

When N8480 Series, E-Series E4410, E-Series E9300 or U2000 Series sensor is
connected, Sensor Mode is set to AVG only by default.

4 Press . The Trigger menu is displayed.

5 Press softkey to configure a trigger.

6 Select either or .

7 Press to configure the remaining trigger parameters. The trigger

Settings menu consists of two pages. Figure 2-21 shows page 1 and

Figure 2-22 shows page 2.

8 Press and will be automatically enabled.

9 Press , and to allow a TTL level high to be produced at the

rear panel TRIG OUT BNC port when the meter is triggered upon a completed
measurement.

84 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

NOTE

NOTE

10 Press or to setup measurement settings such as

measurement averaging, measurement frequency, offsets, duty cycle and so
forth. Refer to “General Power Meter Functions” on page 55 for the setup
procedures.

11 Set the frequency range and step by sending the below commands to meter

using remote interface.

– SENSe1:FREQuency:STARt <start_frequency><frequency_unit>

– SENSe1:FREQuency:STOP <stop_frequency><frequency_unit>

– SENSe1:FREQuency:STEP <frequency_step_size>

Refer to the EPM Series Power Meters Programming Guide for the commands
usage details.

Example of commands set:

FREQ:STAR 10MHz

FREQ:STOP 500MHz

FREQ:STEP 10

The power meter can be remotely controlled by LAN, USB and GPIB (IEEE488)
programming interfaces. Refer to N1913/1914A EPM Series Power Meters
Installation Guide for details.

12 Send *OPC (OPeration Complete) command to meter; to set the operation

complete bit in the Standard Event Status register when all pending device
operations are completed.

13 Set the meter to continuous trigger cycles by sending INITiate:CONTinuous

ON command to meter.

14 Configure and set the required power sweep range and step of the power

source.

15 Set the power source trigger input and trigger output.

16 Set the power source to sweep.

Keysight N1913/1914A User’s Guide 85

2 General Power Meter Functions

NOTE

17 Poll the status of the power meter by sending *ESR?. *ESR? will return a 1

when buffering is completed. Use FETCh? to retrieve all the buffered
measurement.

In both power sweep and frequency sweep mode, the meter TRIG OUT to power
source TRIG IN connection is optional. You may choose to setup the Dwell time
in the power source step setting to cater the maximum settling time required by
the power meter.

Determine the Right Step to be Set

Number of frequency step can be calculated by using equation below:

Step = (f

where,

Step = Number of frequency step

f

= Frequency sweep’s start point

start

= Frequency sweep’s stop point

f

stop

Interval = Frequency step size

stop

– f

+ Interval)/Interval

start

Example

When f

= 1 GHz and f

start

= 5 GHz with given interval of 0.5 GHz, the Step

stop

should be set to

Step

= (f

= (5 GHz – 1 GHz + 0.5 GHz)/0.5 GHz

= 9

stop

– f

+ Interval)/Interval

start

86 Keysight N1913/1914A User’s Guide

Setting Measurement Limits

Power Meter

Swept Source

OUT

OUT

Device
Under Test

+4 dBm

+10 dBm

Amplitude

Frequency

o

o

o

o

o

o

o

Fail

Fail

Upper limit l ine

Lower limit line

You can configure the power meter to detect when a measurement has crossed
over a predefined upper and/or lower limit value.

Limits are boundaries set for a certain power range and it can be applied to
power, ratio or difference measurement.

Figure 2-23 Limits checking applications

In this application a swept frequency signal is applied to the input of the Device
Under Test. The power meter measures the output power. The limits have been
set at +4 dBm and +10 dBm. A fail occurs each time the output power is outside
these limits as shown in Figure 2-24.

General Power Meter Functions 2

Figure 2-24 Limits checking results

Keysight N1913/1914A User’s Guide 87

2 General Power Meter Functions

NOTE

Meas Select

Setting Limits

The power meter can be configured to verify the current measurement in any
measurement line against predefined upper and/or lower limit values. The range
of values that can be set for the upper and lower limits and the default values
depends on the measurement units in the currently selected measurement line
(see Table 2-3 ).

Tab le 2-3 Range of values for window limits

Window Units Maximum Minimum Default Maximum Defaul t Minimum

dB +200 dB –180 dB 60 dB –120 dB

dBm +230 dBm –150 dBm 90 dBm –90 dBm

% 999.9 X% 100.0 a% 100.0 M% 100.0 p%

W 100.000 XW 1.000 aW 1.000 MW 1.000 pW

Procedure

Set the limits as follows:

Ensure you have selected the channel you wish to set up.

1 Press , to display the Measurement Setup menus.

2 Use the and keys to highlight the Limits: setting field.

3 Press to check the Limits: setting field.

4 Use the key to highlight the Minimum Limits: value field.

5 Press to display the Minimum Limit pop-up.

88 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

dBm

dBm

NOTE

Figure 2-25 Minimum limit pop-up

6 Use the numeric keys to enter the required value and press .

7 Use the key to highlight the Maximum Limits: value field.

8 Press to display the Maximum Limit pop-up.

9 Use the numeric keys to enter the required value and press .

10 Press key to close the Measurement Setup screen.

The Limits can be disabled and re-enabled by checking the Limits: setting field.

Keysight N1913/1914A User’s Guide 89

2 General Power Meter Functions

This measurement has failed as the
result is greater than the set limit level.

This measurement has failed as the
result is less than the set limit level.

Checking for Limit Failures

Limit failures are displayed in the appropriate field in the measurement window on
the power meter’s display as shown in Figure 2-26.

Figure 2-26 Limit failures

90 Keysight N1913/1914A User’s Guide

Numeric Format

Single Numeric

Dual Numeric

Meas Select

Selected Window/

Function Field

Measurement Field

Measurements

Channel Field

Configure a measurement displayed in or format as
follows:

– Press , to select the measurement window or

measurement line you want to configure.

General Power Meter Functions 2

Keysight N1913/1914A User’s Guide 91

Figure 2-27 Measurement Setup showing single configuration

2 General Power Meter Functions

NOTE

Single Function Measurement

Figure 2-27 shows an average measurement assigned in the upper measurement

line of the upper window. (For single channel power meter, N1913A, the Channel
field will be disabled, as shown in Figure 2-27).

The gate field is disabled if trigger acquisition is Free Run.

1 Use the , , , , to highlight the Combination function field.

2 Press to display the Function pop-up, and use the and to

highlight Single.

Figure 2-28 Function pop-up

3 Press to complete the entry.

4 The Meas field is set to Avg by default.

5 Press key to complete the setup and display the measurement results.

92 Keysight N1913/1914A User’s Guide

Combined Measurement

Selected window/

Function field

Gate fields

Measurement fields

Combination field

measurement

Channel fields

Figure 2-29 shows a Combined Measurement configuration; Channel A and

Channel C to be displayed in the upper measurement line of the upper display
window. (For single channel power meter, N1913A, the Channel field will be
disabled, as shown in Figure 2-29).

Figure 2-29 Measurement Setup showing combined configuration

General Power Meter Functions 2

Keysight N1913/1914A User’s Guide 93

1 Use the , , , , to highlight the Combination function field.

2 Press to display the Function pop-up (see Figure 2-28) and use the

and to highlight Combined.

3 Press to complete the entry.

4 Press key to complete the setup and display the measurements

results.

Figure 2-30 Measurement example display

2 General Power Meter Functions

SENSe1:
Input from
SENSe1
block

SENSe2:
Input from
SENSe2
block

(N1914A only)

:FEED

FEED1

FEED2

:MATH

“A”|”B”

“A- A”|“A/ A“

“B-A”|“B/A“

“A- B”|“A /B“

“B-B”|“B/B“

A

B

:GAIN

:HOLD

:REL

CALCulate Block

AVG

AVG

Max Hold/ Min Hold

Max Hold/Min Hold

The max hold/min hold setting on the measurement setup window can be set on
the front panel or via SCPI.

Min hold is the minimum of all measurements since the start time. The min hold
reading will be updated as new minimum reading appears.

Max hold is the maximum of all measurements since the start time. The max
reading will be updated as new maximum reading appears.

The max hold/min hold reading can be resettable by pressing the key.

Figure 2-31 Max hold/min hold measurement is performed on the ‘HOLD’

block

94 Keysight N1913/1914A User’s Guide

General Power Meter Functions 2

To set max hold/min hold,

1 Press to display the Measurement Setup menu.

2 Use the , , , , to highlight the Hold function field.

3 Press to display the Hold pop-up, and use the and to

highlight Min or Max (see Figure 2-32).

Figure 2-32 Hold pop-up

4 Press to complete the entry.

5 Press key to complete the setup and display the measurements

results.

Figure 2-33 Min Hold and Max Hold measurement mode indicated in the

display

Keysight N1913/1914A User’s Guide 95

2 General Power Meter Functions

6 Press to display the measurement window in full screen mode. The

measurement mode will be indicated in full word in the expanded window (see

Figure 2-34).

Figure 2-34 Measurement mode in full word

96 Keysight N1913/1914A User’s Guide

Recorder Output

Max Power

Min Power

NOTE

Meas Select

The rear panel Recorder Output connectors (1 and 2) produce a dc voltage that
corresponds to the power level in Watts of the selected measurement window.
This dc voltage ranges from 0 to +1 Vdc. The output impedance is typically 1 kΩ.

For example, the Recorder Outputs can be used to:

– Record swept measurements

– Level an output from a source using external leveling, or

– Monitor the output power

To access the Recorder menu press , and enable Rec o/p. This allows you
to switch the Recorder Output signal on or off and set the scaling of power levels

automatically or manually. The and softkeys allow you to
manually scale the power levels to represent the 1 Vdc maximum and 0 Vdc
minimum output voltage of the Recorder Output. Otherwise, you can set the
Recorder Output to Auto to enable auto-scaling.

In auto-scaling, the minimum power is fixed at –150 dBm and the maximum
power is automatically scaled based on the current power level. The auto-scaled
maximum power ranges from –140 dBm, steps every 10 dBm until +230 dBm
depending on the current power level. The auto-scaling is not applicable if the
measurement of the selected window is a difference, ratio, channel C, or D
measurement.

General Power Meter Functions 2

Procedure

Set the recorder output as follows:

Ensure you have selected the channel you want to set up.

1 Press , to display the Measurement Setup menus.

2 Use the and keys to highlight the Rec o/p: setting field.

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2 General Power Meter Functions

dBm

3 Press to reveal the Recorder option menu.

4 Use the and keys to highlight the option you require.

– The N1913A has only three options, On, Auto, or Off.

– The N1914A has five options: 1, 2, Auto 1, Auto 2, or Off.

5 Press .

6 Use the key to highlight the Recorder Minimum: value field.

7 Press to display the Recorder Minimum pop-up.

Figure 2-35 Recorder Minimum pop-up

8 Use the numeric keys to enter the power level you want to generate a 1 Vdc

output in the Recorder Maximum pop-up and press .

9 Use the key to highlight the Recorder Maximum: value field.

10 Press to display the Recorder Maximum pop-up.

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General Power Meter Functions 2

dBm

NOTE

Figure 2-36 Recorder Maximum pop-up

11 Use the numeric keys to enter the power level you want to generate a 0 Vdc

output in the Recorder Minimum pop-up and press .

12 Press key to close the Measurement Setup screen.

The recorder output can be disabled and re-enabled by checking the Rec o/p:
setting field.

The highest power you are going to measure is used to determine the value
which you should set for the Recorder Output maximum setting. For example, if
you are measuring a power less than 1 mW and greater than 100 mW, then set
the recorder maximum value to 1 mW.

Table 2-4 Ranges of recorder output setting

Log5040302010 0

Lin 100 W 10 W 1 W 100 mW 10 mW 1 mW

Log –10 –20 –30 –40 –50 –60

Lin 100 mW 10 mW 1 mW 100 nW 10 nW 1 nW

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2 General Power Meter Functions

Save/Recall

Save

Confirm

Saving and Recalling Power Meter States

To reduce repeated setup sequences, you can save a maximum of ten power
meter states in the non-volatile memory.

The save/recall functions are part of the Sys/Inputs menu, accessed by pressing

the key.

To save a measurement setup:

1 Press , to display the Save/Recall screen as shown in

Figure 2-37.

Figure 2-37 Save/Recall screen

2 Using the and keys, select an available name from the displayed list.

To change the name of a register -See Chapter 2, “Editing a Register’s Name,”
starting on page 101, otherwise press .

3 The power meter prompts you to press to proceed.

Figure 2-38 Save confirm pop-up

100 Keysight N1913/1914A User’s Guide