Keysight E7590A User manual

Keysight Instrument Rack
E7590A- 1.3 m
E3661B- 1.6 m
E3662B- 2.0 m
User Manual

ii
Notices
© Keysight Technologies, Inc. 2015
No part of this manual may be repro-
duced in any form or by any means
(including electronic storage and retrieval
or translation into a foreign language)
without prior agreement and written con-
sent from Keysight Technologies, Inc. as
governed by United States and interna-
tional copyright laws.
Manual Part Number
5967-9318
Edition
Third Edition, August 2015
Printed in
Malaysia
Published by
Keysight Technologies, Inc.
900 S. Taft Ave.
Loveland, CO 80537 USA
Trademarks
PICMG®, Compact PCI® are registered
trademarks of the PCI Industrial Com-
puter Manufacturers Group.
AdvancedTCA®and ATCA are registered
trademarks of the PCI Industrial Com-
puter Manufacturers Group.
PCI-SIG®, PCI Express®, and PCIe®are
registered trademarks of PCI-SIG.
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 prod-
uct and for other Keysight products may
be downloaded from the Web. Go to
http://keysight.com/go/conformity.
You can then search by product number
to find the latest Declaration of Confor-
mity.
U.S. Government Rights
The Software is “commercial computer
software,” as defined by Federal Acquisi-
tion Regulation (“FAR”) 2.101. Pursuant
to FAR 12.212 and 27.405-3 and Depart-
ment of Defense FAR Supplement
(“DFARS”) 227.7202, the U.S. govern-
ment acquires commercial computer
software under the same terms by which
the software is customarily provided to
the public. Accordingly, Keysight pro-
vides 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 infor-
mation related to commercial computer
software or commercial computer soft-
ware documentation that is not custom-
arily provided to the public; or (2)
Relinquish to, or otherwise provide, the
government rights in excess of these
rights customarily provided to the public
to use, modify, reproduce, release, per-
form, display, or disclose commercial
computer software or commercial com-
puter software documentation. No addi-
tional 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 com-
puter software pursuant to the FAR and
the DFARS and are set forth specifically
in writing elsewhere in the EULA. Key-
sight 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 EDI-
TIONS. FURTHER, TO THE MAXIMUM
EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL WAR-
RANTIES, EITHER EXPRESS OR IMPLIED,
WITH REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED
HEREIN, INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES OF MER-
CHANTABILITY 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 INFOR-
MATION CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A SEP-
ARATE 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.
Keysight Technologies does not warrant
third-party system-level (combination of
chassis, controllers, modules, etc.) per-
formance, safety, or regulatory compli-
ance unless specifically stated.
Safety Information
A CAUTION denotes a hazard. It calls
attention to an operating procedure or
practice that, if not correctly per-
formed 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 under-
stood and met.
A WARNING denotes a hazard. It calls
attention to an operating procedure or
practice, 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.

Safety Information
The following general safety precau-
tions must be observed during all
phases of operation of this instrument.
Failure to comply with these precau-
tions or with specific warnings or oper-
ating instructions in the product
manuals violates safety standards of
design, manufacture, and intended use
of the instrument. Keysight Technolo-
gies assumes no liability for the cus-
tomer's failure to comply with these
requirements.
General
Do not use this product in any manner not
specified by the manufacturer. The protec-
tive features of this product must not be
impaired if it is used in a manner specified in
the operation instructions.
Before Applying Power
Verify that all safety precautions are taken.
Make all connections to the unit before
applying power. Note the external markings
described under “Safety Symbols”.
Ground the Instrument
Keysight chassis’ are provided with a
grounding-type power plug. The
instrument chassis and cover must be
connected to an electrical ground to
minimize shock hazard. The ground pin
must be firmly connected to an electri-
cal ground (safety ground) terminal at
the power outlet. Any interruption of
the protective (grounding) conductor
or disconnection of the protective
earth terminal will cause a potential
shock hazard that could result in per-
sonal injury.
Do Not Operate in an Explosive
Atmosphere
Do not operate the module/chassis in
the presence of flammable gases or
fumes.
Do Not Operate Near Flammable
Liquids
Do not operate the module/chassis in
the presence of flammable liquids or
near containers of such liquids.
Cleaning
Clean the outside of the Keysight mod-
ule/chassis with a soft, lint-free,
slightly dampened cloth. Do not use
detergent or chemical solvents.
Do Not Remove Instrument Cover
Only qualified, service-trained person-
nel who are aware of the hazards
involved should remove instrument
covers. Always disconnect the power
cable and any external circuits before
removing the instrument cover.
Keep away from live circuits
Operating personnel must not remove
equipment covers or shields. Proce-
dures involving the removal of covers
and shields are for use by service-
trained personnel only. Under certain
conditions, dangerous voltages may
exist even with the equipment
switched off. To avoid dangerous elec-
trical shock, DO NOT perform proce-
dures involving cover or shield removal
unless you are qualified to do so.
DO NOT operate damaged
equipment
Whenever it is possible that the safety
protection features built into this prod-
uct have been impaired, either through
physical damage, excessive moisture,
or any other reason, REMOVE POWER
and do not use the product until safe
operation can be verified by service-
trained personnel. If necessary, return
the product to an Keysight Technolo-
gies Sales and Service Office for ser-
vice and repair to ensure the safety
features are maintained.
DO NOT block the primary
disconnect
The primary disconnect device is the
appliance connector/power cord when
a chassis used by itself, but when
installed into a rack or system the dis-
connect may be impaired and must be
considered part of the installation.
Do Not Modify the Instrument
Do not install substitute parts or per-
form any unauthorized modification to
the product. Return the product to an
Keysight Sales and Service Office to
ensure that safety features are main-
tained.
In Case of Damage
Instruments that appear damaged or
defective should be made inoperative
and secured against unintended oper-
ation until they can be repaired by
qualified service personnel
Do NOT block vents and fan exhaust:
To ensure adequate cooling and venti-
lation, leave a gap of at least 50mm
(2") around vent holes on both sides of
the chassis.
Do NOT operate with empty slots: To
ensure proper cooling and avoid dam-
aging equipment, fill each empty slot
with an AXIe filler panel module.
Do NOT stack free-standing chassis:
Stacked chassis should be rack-
mounted.
All modules are grounded through the
chassis: During installation, tighten
each module's retaining screws to
secure the module to the chassis and
to make the ground connection.
Operator is responsible to maintain
safe operating conditions. To ensure
safe operating conditions, modules
should not be operated beyond the
full temperature range specified in the
Environmental and physical specifica-
tion. Exceeding safe operating condi-
tions can result in shorter lifespan,
improper module performance and
user safety issues. When the modules
are in use and operation within the
specified full temperature range is not
maintained, module surface tempera-
tures may exceed safe handling con-
ditions which can cause discomfort or
burns if touched. In the event of a
module exceeding the full tempera-
ture range, always allow the module
to cool before touching or removing
modules from the chassis.
iii

Safety Symbols
A CAUTION denotes a hazard. It
calls attention to an operating
procedure or practice, 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 CAU-
TION notice until the indicated
conditions are fully understood
and met.
A WARNING denotes a hazard. It
calls attention to an operating
procedure or practice, that, if not
correctly performed or adhered to,
could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indi-
cated conditions are fully under-
stood and met.
Products display the following sym-
bols:
The CSA mark is a registered trade-
mark of the Canadian Standards Asso-
ciation and indicates compliance to
the standards laid out by them. Refer
to the product Declaration of Confor-
mity for details.
Notice for European Community: This
product complies with the relevant
European legal Directives: EMC Direc-
tive (2004/108/EC) and Low Voltage
Directive (2006/95/EC).
The Regulatory Compliance Mark
(RCM) mark is a registered trademark.
This signifies compliance with the Aus-
tralia EMC Framework regulations
under the terms of the Radio Commu-
nication Act of 1992.
ICES/NMB-001 indicates that this ISM
device complies with the Canadian
ICES-001.
This symbol represents 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 this product.
South Korean Class A EMC Declara-
tion. this equipment is Class A suitable
for professional use and is for use in
electromagnetic environments outside
of the home.
Waste Electrical and
Electronic
Equipment (WEEE)
Directive
2002/96/EC
This product complies with the WEEE
Directive (2002/96/EC) marking
requirement. The affixed product label
(see below) indicates that you must not
discard this electrical/electronic prod-
uct in domestic household waste.
Product Category: With reference to
the equipment types in the WEEE
directive Annex 1, this product is clas-
sified as a “Monitoring and Control
instrumentation” product.
Do not dispose in domestic household
waste.
To return unwanted products, contact
your local Keysight office for more
information.
Warning, risk of electric
shock
Refer to manual for addi-
tional safety information.
Earth Ground.
Chassis Ground.
Alternating Current (AC).
Standby Power. Unit is not
completely disconnected
from AC mains when
switch is in standby.
Antistatic precautions
should be taken.
CAT I
CAT II
CAT III
CAT IV
IEC Measurement Cate-
gory I, II, III, or IV
For localized Safety Warnings, Refer
to Keysight Safety document (p/n
9320-6792).
iv

Keysight Instrument Rack E7950A-2 1.3m E3661B-1.6m E3662B-2.0 v
Contents
Safety and Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Leakage Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cabinet Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Acoustics - (Germany). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Intended Use of Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical and Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . 10
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Ventilation and Heat Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cable Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Standard Racks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Side Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Rear Door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mounting Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Support Rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Rack Lifting Hooks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Anti-tip Stabilizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Casters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Levelers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PDU Install Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Extractor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Filler Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ballast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Monitor Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Support Rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VXI Rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Non-Keysight Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Floor Space and Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Rack Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Equipment Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Weight and Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Slide-Mounted Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Work Surface/Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Acoustic Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Estimating Total Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

vi Keysight Instrument Rack E7950A-2 1.3m E3661B-1.6m E3662B-2.0
Unpacking and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Repackaging the Rack for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Removal and Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rear Door Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rear Door Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Top Cap Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Top Cap Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Side Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Side Cover Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Forehead Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Forehead Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Base Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Base Cover Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Anti-tip Stabilizer Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Anti-tip Stabilizer Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Rear Door Hinge Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Rear Door Hinge Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Rail Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Rail Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Leveler or Caster Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Leveler or Caster Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Ballast Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Ballast Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Door Bumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7
Safety and Regulatory Information
Safety and Regulatory Information
For your protection, this product has been tested for conformance to various
national and international regulations and standards. The scope of this
regulatory testing includes electrical and mechanical safety, electromagnetic
emissions, immunity, ESD, acoustics, and hazardous materials.
Where required, certifications are obtained from third party test agencies.
Certification marks appear on the product label. In addition, various regulatory
bodies require information under the headings below.
Please refer to the Safety Information guide provided with the instrument rack
for additional important information.
This product and related documentation must be reviewed for familiarization
with safety markings and instructions before operation.
Safety Warnings
The following warnings and cautions are applicable to all Keysight racks. Please
observe all safety precautions and warnings.
Grounding
This product has not been evaluated for connection to an IT power system, an
AC distribution system having no direct connection to earth (ground), according
to EN60950.
The WARNING sign denotes a hazard. It calls attention to a
procedure, practice, or situation which, if not done correctly or
adhered to, could result in injury. Do not proceed beyond a
WARNING sign until the indicated conditions are fully understood
and met.
The CAUTION sign denotes a hazard. It calls attention to an
operating procedure, practice, or situation which, if not done
correctly or adhered to, could damage or destroy part or the entire
product. Do not proceed beyond a CAUTION sign until the
indicated conditions are fully understood and met.

8 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Safety and Regulatory Information
Leakage Current
Power Limitations
Cabinet Stability
Acoustics - (Germany)
Acoustic noise (a weighted sound pressure level LpA) measured at the operator's
position, normal operation to ISO 7779.
This is a safety class I product and has a protective earthing
(grounding) terminal. There must be an un-interruptible safety
earth ground from the main power source to the product's input
wiring terminals, power cord, or supplied cord set. Whenever it is
likely that the protection has been impaired, disconnect the
power cord until the ground has been restored.
Due to types of products that can be installed in this cabinet, there
is a risk of high leakage current (3.5 mA). Reliable ground circuit
continuity is vital for safe operation of this product. To reduce the
risk of electric shock, earth (ground) connection is essential before
connecting the power supply. Never operate this cabinet with the
ground conductor disconnected.
To reduce the risk of overload, do not load any single PDU with
more than a maximum of 16 Amperes. In addition, do not load a
single NEMA 5-15 or IEC-320 receptacle with more than 15
Amperes.
To reduce the risk of cabinet instability, install counter ballast at
the bottom-rear of the cabinet before installing any computer
components.
To reduce the risk of cabinet instability, fully extend the stabilizer
before extending any devices. Extend only one device at a time. Do
not stand or sit on any extended device. Qualified service
personnel should do all non-operator servicing.

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 9
Laemangabe (Schalldruckpegel LpA) gemessen an Arbeitsplatz bei normalem
Betrieb nach DIN 45635, Teil 19.
Accessories
With extractor fan accessory: 61 dB (LpA) For information about rack accessories
and compatibility, see the Keysight Enclosures Solutions Product Catalog at
www.keysight.com/find/racks on the Web, or contact your Keysight Sales
Representative.
This product is designed for use with specific electrical accessories (i.e., PDUs
and fans). The use of any other accessory is not recommended or supported.
Intended Use of Equipment
The Keysight E7590A, E3661B, and E3662B Instrument Racks are intended to be
used, along with the recommended accessories, for the installation of standard
19-inch rack mounted instruments from Keysight and other manufacturers.
Cleaning
Disconnect the power from the instrument rack before cleaning the instrument
rack and accessories. Use only a damp cloth to clean the surfaces of the
instrument rack and accessories.
This product is designed for use with specific electrical accessories
(i.e., PDUs and fans). The use of any other accessory is not
recommended or supported.
Do not attempt to open or repair the Power Distribution Unit
(PDU). There are no replaceable parts inside the PDU. If the
power cord or switch cord is frayed, cut, or damaged, replace the
entire PDU.

10 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Description
The Keysight 19-inch Electronics Industries Association (EIA) racks, options, and
accessories are designed specifically to meet the needs of instrumentation
customers and make installing devices in rack mounting systems simple.
The instrument racks consist of a welded, cold-rolled steel frame with removable
top, sides, and rear door, casters, leveling feet and an anti-tipping mechanism as
shown in Figure 1. Internally, rails that hold your equipment lock into slots in the
vertical mounting columns. These plus keyed slots provide for quick and
accurate placement.
Electrical and Environmental Specifications
The electrical and environmental specifications for the instrument racks, shown
in the table below, depend on the power distribution unit (PDU) option selected:
Option AW1:No PDU
Option AW3:100-120V, 50/60 Hz PDU Option AW5:200-240V, 50/60 Hz PDU
Model
Number
E3661B-AW1
E3662B-AW1
E7590A-AW1
E7590A-AW3 E7590A-AW5 E3661B-AW3
E3662B-AW3
E3661B-AW5
E3662B-AW5
Input -
100-120V,
50/60 Hz
200-240V,
50/60 Hz
100-120V,
50/60 Hz
200-240V,
50/60 Hz
Output
-
100-120V,
50/60 Hz,
16A
1-IEC 320
C13
Receptacle
5-NEMA
5-15R
Receptacles
200-240V,
50/60 Hz,
16A
6-IEC 320
C13
Receptacles
100-120V,
50/60 Hz,
16A
1-IEC 320
C13
Receptacle
9-NEMA
5-15R
Receptacles
200-240V,
50/60 Hz,
16A
1-IEC 320
C19
Receptacle
10-IEC 320
C13
Receptacles
Operating
Temperature
0° C to 55° C 0° C to 55° C 0° C to 55° C 0° C to 55° C 0° C to 55° C
Operating
Humidity
5% to 80%
RH,
non-
condensing
5% to 80%
RH,
non-
condensing
5% to 80%
RH,
non-
condensing
5% to 80%
RH,
non-
condensing
5% to 80%
RH,
non-
condensing
Operating
Environment
Indoor
Location
Indoor
Location
Indoor
Location
Indoor
Location
Indoor
Location

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 11
Physical Specifications
The physical specifications for the racks are listed below.
All rack models can be loaded with a total of 1800 pounds of equipment.
Figure 1 Exploded view of Keysight Rack
100-120V, 50/60 Hz racks (Option AW3) are supplied with a
power cord terminated with a NEMA 5-20P plug to fit a 20A
receptacle.
200-240V, 50/60 Hz racks (Option AW5) are supplied without a
power plug—the PDU power cord is un-terminated. The installer
must install the correct plug for the country of installation.
All racks (Option AW3 or AW5) must be connected to a dedicated
20A circuit.
Rack Height Wid th Depth Weight
E7590A 1.3 m / 51.9 in .6 m/23.6 in .905 m/35.6 in 140.6 kg/310 lbs
E3661B 1.6 m / 63.8 in .6 m/23.6 in .905 m/35.6 in 161 kg/355 lbs
E3662B 2.0 m / 79.5 in .6 m/23.6 in .905 m/35.6 in 177 kg/390 lbs

12 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Dimensions
The side view in Figure 2 shows valid dimensions for the E7590A, E3661B and
E3662B.
Figure 2 Side View of Top of Rack with Installed Components
The dimensions of the E7590A are shown in Figures 3. All dimensions are in
millimeters.

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 13
Figure 3 E7590A Dimensions – Front View
The dimensions of the E3661B are shown below.

14 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Figure 4 E3661B Dimensions— Front View
The dimensions of the E3662B are shown below.

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 15
Figure 5 E3662 Dimensions— Front View
Ventilation and Heat Dissipation
Air is primarily drawn through the opening at the bottom of the rear door.
Through convection, the heated air rises to the exhaust. By either simple
convection, or a combination with an optional extractor fan, the heated air
exhausts though the vented top cap, illustrated in Figure 6.

16 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Figure 6 Air Flow through the rack.
When the proper system is installed, internal temperature rise is typically less
than 15 °C (27 ° F) over ambient temperature.
Cable Access
The base of the rack stops 100 mm short of the rear door, providing an access
path for power and signal cables.
Standard Racks
The following parts are included with every Keysight instrument rack.
Top
The top of the rack incorporates a ventilation path through the roof of the rack
and the convection current heat exit for the heat generated by the installed
equipment.
Side Panels
Lift up-and-off side panels allow fast and easy access from either side for
installation, servicing, and removal of equipment. The top cap need not be
removed to remove side panels.
Keysight recommends that you monitor the internal temperature
of the rack. The internal temperature should not exceed the heat
ratingof any installed instruments.

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 17
Rear Door
Standard is a right-opening, vented rear door with a lockable slam latch and
sheet metal catch providing ventilation and security. The rear door can be
mounted to open from either the left or the right.
Mounting Columns
The rack columns are a folded design. Running up the inside of the fold is
rectangular mounting slots for the rails, in screw holes for securing the rails. The
hole placement is chosen to conveniently place EIA racks. Every fifth rectangular
hole is slotted to make counting easier. See Figure 7.
The mounting columns bolt into the corners of the frame, and then accept
supporting rails into pre-configured mounting slots. Each of two rails attaches
between the front and rear columns. The equipment is then mounted on a pair of
support rails that run from front to back.
Figure 7 Vertical Mounting Columns
Each product or device installed requires one or more EIA unit increments. One
standard EIA rack mount increment is equal to 44.45 mm (1.75 in).

18 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Support Rails
Equipment is supported in the rack by support rails running from front to back.
The rails are screwed to the vertical columns. See Figure 7 for an illustration of a
System II rail. System II rails are used with any instrument that conforms to
Keysight System II product specifications, and are the standard support rail.
Only after securing a pair of rails with screws can equipment be installed.
The mounting slots in the columns are positioned to make support rail
placement convenient in EIA units. Additionally, they are marked to make
matching the heights of matching support rails easy.
Figure 8 System II Rail with Support Columns and Attaching Hardware
Rack Lifting Hooks
Four lifting hooks are fitted to the top of the rack. Together, they can support the
weight of a rack loaded to maximum recommend gross weight. Each hook is
capable of supporting 227 kg (500 lbs). Maximum recommended gross weight is
816 kg (1800 lbs).

Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 19
Anti-tip Stabilizer
Standard on each Keysight rack is a retractable anti-tip stabilizer mechanism.
Located at the bottom center of the rack, it provides temporary additional
stability when installing or removing equipment components. The anti-tip
stabilizer should also be used when slide-mounted components are in their
extended position.
Casters
Each Keysight rack is provided with four, 3-inch diameter, smooth rolling,
heavy-duty casters to facilitate moves over short distances.
Levelers
Levelers are located in each corner to level and stabilize the rack. For maximum
accuracy, use a level while adjusting the feet.
PDU
A 110V (option AW3) or 220V (option AW5) PDU can be ordered with each rack.
A maximum of two PDUs can be installed in one rack.
PDU Install Kit
A PDU installation kit is installed at the factory for the above PDU – each
installation kit has the capability for installation of a second PDU. A second PDU
can be ordered and installed by the customer.
Extractor Fan
An extractor fan assembly can be ordered and consists of two 100 cubic feet per
minute tube-axial fans attached to a fan tray. The fan assembly is attached to
the top-rear of the rack frame.
The stability work sheets should be used whenever a new system
is configured, or a change to a system is made, to assure rack
stability.
Use the ballast accessory (P/N C2790A) when permanent
additional stability is required. See the worksheets in Appendix A
to determine your ballast requirements.
A fully loaded cabinet's maximum gross weight of 816kg (1800 lbs)
can overload a raised floor.

20 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Description
Filler Panels
To ensure adequate cooling in racks using extractor fans, all unused front panel
space must be covered with blank filler panels an the rear door must be closed.
Filler panels are made from 1.57 mm (0.062 in) aluminum formed to give the
thickness of standard 4.7 (0.187 in) distance from the panel mounting flange.
The panels are supplied with EIA/IEC mounting holes and attaching hardware.
The filler panels are designed for use with the rack with EIA/IEC mounting holes
and attaching hardware. They can be ordered in 7 different sizes measured in EIA
units, mm, or in.
Ballast
Ballast is available in 30 lb. kits, and may be required when using slide- mounted
products and/or keyboard/ work surface products. Use the stability work sheets
in the Procedures chapter to determine ballast requirements.
Monitor Mount Kit
An optional monitor mounting kit is available.
Support Rails
Two optional support rail types are available.
VXI Rail
VXI rails are used with Keysight VXI mainframe equipment.
Do not ship racks with ballast installed.
Always mount ballast in the rear of the rack.
The anti-tip assembly is not a substitute for ballast.