Keysight U2761A User manual

Keysight U2761A USB
Modular Function/Arbitrary
Waveform Generator
User’s Guide

4 Keysight U2761A User’s Guide
Notices
Copyright Notice
© Keysight Technologies 2008 - 2017
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.
Trademarks
Pentium is a U.S. registered trademark
of Intel Corporation.
Microsoft, Visual Studio, Windows, and
MS Windows are trademarks of
Microsoft Corporation in the United
States and/or other countries.
Manual Part Number
U2761-90000
Edition
Edition 10, June 1, 2017
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance with
the terms of such license.
Declaration of Conformity
Declarations of Conformity for this
product and for other Keysight
products may be downloaded from the
Web. 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
CAUTION
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.
WARNING
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.

Keysight U2761A User’s Guide 5
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.
Direct current (DC)
Equipment protected throughout by
double insulation or reinforced
insulation
Alternating current (AC) Off (mains supply)
Both direct and alternating current On (mains supply)
Three-phase alternating current Caution, risk of electric shock
Earth (ground) terminal
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Protective earth (ground) terminal Caution, hot surface
Frame or chassis (ground) terminal Out position of a bi-stable push control
Equipotentiality In position of a bi-stable push control

6 Keysight U2761A User’s Guide
General Safety Information
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.
WARNING
– Do not operate the product in an explosive atmosphere or in the presence
of flammable gases or fumes.
– Do not use the equipment if it does not operate properly. Have the
equipment inspected by qualified service personnel(s).
CAUTION
– Observe all markings on the instrument before connecting any wiring to
the instrument.
– Use the device with the cables provided.
– Repair or service that is not covered in this manual should only be
performed by qualified personnel(s).

Keysight U2761A User’s Guide 7
Environmental Conditions
This instrument is designed for indoor use and in the area with low condensation.
The table below shows the general environmental requirements for this
instrument.
Environmental condition Requirement
Operating temperature 0 °C to 50 °C
Operating humidity 20 to 85% RH non-condensing
Storage temperature –20 °C to 70 °C
Storage humidity 5 to 90% RH non-condensing
CAUTION
The U2761A USB modular function/arbitrary waveform generator complies
with the following safety and EMC requirements.
– IEC 61010-1:2001/EN61010-1:2001 (2nd Edition)
– Canada: CAN/CSA-C22.2 No. 61010-1-04
– USA: ANSI/UL 61010-1:2004
– IEC 61326-2002/EN 61326:1997+A1:1998+A2:2001+A3:2003
– Canada: ICES-001:2004
– Australia/New Zealand: AS/NZS CISPR11:2004

8 Keysight U2761A 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.
The RCM mark is a registered
trademark of the Australian
Communications and Media Authority.
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.
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.
The CSA mark is a registered
trademark of the Canadian
Standards Association.

Keysight U2761A User’s Guide 9
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/U2761A
(product-specific information and support, software and
documentation updates)
–www.keysight.com/find/assist
(worldwide contact information for repair and service)

10 Keysight U2761A User’s Guide
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

Keysight U2761A User’s Guide 11
Table of Contents
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
1 Getting Started
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Product at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Product Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Product Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Dimensions Without Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Dimensions With Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Standard Purchase Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Electrical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
55-Pin Backplane Connector Pin Configuration . . . . . . . . . . . . . . . .28
Chassis Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Activate Your Device License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
To Activate Your Device License . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
To Verify your Device License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
2 Features and Functions
Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

12 Keysight U2761A User’s Guide
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Output Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Output Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Output Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
DC Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Output Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Duty Cycle (Square Waves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Symmetry (Ramp Wave) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Set Output Using SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . . 49
Pulse Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Pulse Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Pulse Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Pulse Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Generate Pulse Waveform Using SCPI Commands . . . . . . . . . . . . . 54
Amplitude Modulation (AM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
To Select AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Modulating Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Modulating Waveform Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Modulation Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Generate AM Using SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . 60
Frequency Modulation (FM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
To Select FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Modulating Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Modulating Waveform Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Frequency Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Generate FM Using SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . 66
Phase Modulation (PM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
To Select PM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Keysight U2761A User’s Guide 13
Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Modulating Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Modulating Waveform Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Phase Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Generate PM Using SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . .71
Frequency-Shift Keying (FSK) Modulation . . . . . . . . . . . . . . . . . . . . . . .72
To Select FSK Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
FSK Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
FSK “Hop” Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
FSK Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Generate FSK Modulation Using SCPI Commands . . . . . . . . . . . . .76
Phase-Shift Keying (PSK) Modulation . . . . . . . . . . . . . . . . . . . . . . . . . .77
To Select PSK Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
PSK Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
PSK Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
PSK Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Generate PSK Modulation Using SCPI Commands . . . . . . . . . . . . .81
Amplitude-Shift Keying (ASK) Modulation . . . . . . . . . . . . . . . . . . . . . . .82
To Select ASK Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Carrier Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
ASK Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Generate ASK Modulation Using SCPI Commands . . . . . . . . . . . . .85
Frequency Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
To Select Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Start Frequency and Stop Frequency . . . . . . . . . . . . . . . . . . . . . . . .87
Sweep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Sweep Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Sweep Trigger Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Set Frequency Sweep Using SCPI Commands . . . . . . . . . . . . . . . . .90
Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Trigger Source Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

14 Keysight U2761A User’s Guide
Internal Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Manual Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
External Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Trigger Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Trigger Output Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Set Triggering Using SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . 96
Arbitrary Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
To Create and Store an Arbitrary Waveform . . . . . . . . . . . . . . . . . . 97
3Characteristicsand Specifications
Index

Keysight U2761A User’s Guide 15
List of Figures
Figure 1-1 55-pin backplane connector pin configuration . . . . . .28
Figure 2-1 U2761A soft front panel . . . . . . . . . . . . . . . . . . . . . . . .36
Figure 2-2 Top panel view of the U2761A . . . . . . . . . . . . . . . . . . .37
Figure 2-3 Panel view of the frequency section . . . . . . . . . . . . . .38
Figure 2-4 Panel view of the amplitude section . . . . . . . . . . . . . .40
Figure 2-5 Panel view of the DC offset section . . . . . . . . . . . . . . .41
Figure 2-6 Panel view of the Tools menu . . . . . . . . . . . . . . . . . . .44
Figure 2-7 Square wave duty cycles . . . . . . . . . . . . . . . . . . . . . . .45
Figure 2-8 Panel view of the duty cycle section . . . . . . . . . . . . . .46
Figure 2-9 Ramp wave duty cycles . . . . . . . . . . . . . . . . . . . . . . . .47
Figure 2-10 Panel view of the symmetry section . . . . . . . . . . . . . .47
Figure 2-11 Panel view of the output section . . . . . . . . . . . . . . . . .48
Figure 2-12 Pulse waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Figure 2-13 Panel view of the pulse width section . . . . . . . . . . . . .52
Figure 2-14 AM waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Figure 2-15 Panel view of AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Figure 2-16 Panel view of the Arbitrary waveform . . . . . . . . . . . . .57
Figure 2-17 FM waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Figure 2-18 Panel view of FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Figure 2-19 PM waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Figure 2-20 Panel view of PM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Figure 2-21 FSK modulation waveform . . . . . . . . . . . . . . . . . . . . . .72
Figure 2-22 Panel view of FSK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Figure 2-23 PSK modulation waveform . . . . . . . . . . . . . . . . . . . . . .77
Figure 2-24 Panel view of PSK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Figure 2-25 ASK modulation waveform . . . . . . . . . . . . . . . . . . . . . .82
Figure 2-26 Panel view of ASK . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Figure 2-27 Frequency sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Figure 2-28 Panel view of sweep . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Figure 2-29 Trigger input pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Figure 2-30 Trigger output pulse . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Figure 2-31 Ramp waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Figure 2-32 Waveform download in progress . . . . . . . . . . . . . . . . .99

16 Keysight U2761A User’s Guide
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

Keysight U2761A User’s Guide 17
List of Tables
Table 1-1 Synchronous Simultaneous Interface (SSI) connector
pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Table 2-1 Output functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Table 2-2 Output frequency range . . . . . . . . . . . . . . . . . . . . . . . .37
Table 2-3 Carrier frequency for AM . . . . . . . . . . . . . . . . . . . . . . .57
Table 2-4 Carrier frequency for FM . . . . . . . . . . . . . . . . . . . . . . .63
Table 2-5 Carrier frequency for PM . . . . . . . . . . . . . . . . . . . . . . .69
Table 2-6 Carrier frequency for FSK . . . . . . . . . . . . . . . . . . . . . . .74
Table 2-7 “Hop” frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Table 2-8 Carrier frequency for PSK . . . . . . . . . . . . . . . . . . . . . .79
Table 2-9 Carrier frequency for ASK . . . . . . . . . . . . . . . . . . . . . .84

18 Keysight U2761A User’s Guide
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

Keysight U2761A USB Modular Function/
Arbitrary Waveform Generator
User’s Guide
19
1 Getting Started
Introduction 20
Product at a Glance 21
Product Dimensions 23
Standard Purchase Items 25
Inspection and Maintenance 26
Installation and Configuration 27
Activate Your Device License 30
This chapter provides the introduction of the Keysight U2761A that helps you get
acquainted with the product and the product outlook. This chapter also includes
the installation and configuration procedures that will help you get started with
the Keysight U2761A.

1 Getting Started
20 Keysight U2761A User’s Guide
Introduction
The Keysight U2761A is a 20 MHz USB modular function generator with Arbitrary
waveform and pulse generation capabilities. It can operate as a standalone unit or
as part of a modular unit when used with the U2781A USB modular instrument
chassis.
The Keysight U2761A adopts the latest direct digital synthesis (DDS) technology
that digitally creates Arbitrary waveforms and frequencies from a single, fixed
source frequency. DDS offers the precision of a digital control logic; reducing the
complexity of the generator while increasing the stability. Thus, creating a stable,
accurate output signal for clean, low distortion sine waves with fast rise and fall
time up to 20 MHz and linear Ramp waves up to 200 kHz.
Various features of the U2761A
– 20 MHz Sine and Square waveforms
– Hi-Speed 2.0, USBTMC 488.2 standards
– Sine, Square, Ramp, Triangle, Pulse, and DC waveforms
– 14-bit, 50 MSa/s, 64 K-point Arbitrary waveforms
– AM, FM, PM, ASK, FSK, and PSK modulation types
– 40 mVpp to 5 Vpp amplitude range for 50 Ω load, and 80 mVpp to 10 Vpp
amplitude range for open circuit
– Pulse generation
– 2 MHz maximum frequency for Arbitrary waveforms, with option U2010A