User Manual
Keysight Instrument Rack
E7590A- 1.3 m
E3661B- 1.6 m
E3662B- 2.0 m
Notices
© Keysight Technologies, Inc. 2015
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, Inc. as
governed by United States and international 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 Computer Manufacturers Group.
AdvancedTCA
trademarks of the PCI Industrial Computer Manufacturers Group.
PCI-SIG®, PCI Express®, and PCIe
registered trademarks of PCI-SIG.
®
and ATCA are registered
®
are
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://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.
Keysight Technologies does not warrant
third-party system-level (combination of
chassis, controllers, modules, etc.) performance, safety, or regulatory compliance unless specifically stated.
Safety Information
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 CAUTION 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 indicated
conditions are fully understood and met.
ii
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 or operating instructions in the product
manuals 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.
General
Do not use this product in any manner not
specified by the manufacturer. The protective 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 electrical 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 personal 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 module/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 personnel 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. Procedures involving the removal of covers
and shields are for use by servicetrained personnel only. Under certain
conditions, dangerous voltages may
exist even with the equipment
switched off. To avoid dangerous electrical shock, DO NOT perform procedures 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 product 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 servicetrained personnel. If necessary, return
the product to an Keysight Technologies Sales and Service Office for service 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 disconnect may be impaired and must be
considered part of the installation.
Do Not Modify the Instrument
Do not install substitute parts or perform any unauthorized modification to
the product. Return the product to an
Keysight Sales and Service Office to
ensure that safety features are maintained.
In Case of Damage
Instruments that appear damaged or
defective should be made inoperative
and secured against unintended operation until they can be repaired by
qualified service personnel
Do NOT block vents and fan exhaust:
To ensure adequate cooling and ventilation, 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 damaging equipment, fill each empty slot
with an AXIe filler panel module.
Do NOT stack free-standing chassis:
Stacked chassis should be rackmounted.
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 specification. Exceeding safe operating conditions 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 temperatures may exceed safe handling conditions which can cause discomfort or
burns if touched. In the event of a
module exceed ing the full temperature 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 CAUTION 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 indicated conditions are fully understood and met.
Products display the following symbols:
Warning, risk of electric
shock
Refer to manual for additional 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.
The CSA mark is a registered trademark of the Canadian Standards Association and indicates compliance to
the standards laid out by them. Refer
to the product Declaration of Conformity for details.
Notice for European Community: This
product complies with the relevant
European legal Directives: EMC Directive (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 Australia EMC Framework regulations
under the terms of the Radio Communication 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 Declaration. 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 product in domestic household waste.
Product Category: With reference to
the equipment types in the WEEE
directive Annex 1, this product is classified 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.
CAT I
CAT II
CAT III
CAT IV
For localized Safety Warnings, Refer
to Keysight Safety document (p/n
9320-6792).
IEC Measurement Category I, II, III, or IV
iv
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
Keysight Instrument Rack E7950A-2 1.3m E3661B-1.6m E3662B-2.0 v
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
vi Keysight Instrument Rack E7950A-2 1.3m E3661B-1.6m E3662B-2.0
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.
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.
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 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.
7
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.
Leakage Current
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.
Safety and Regulatory Information
Power Limitations
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.
Cabinet Stability
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.
Acoustics - (Germany)
Acoustic noise (a weighted sound pressure level LpA) measured at the operator's
position, normal operation to ISO 7779.
8 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
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.
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.
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.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 9
Description
Electrical and Environmental Specifications
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.
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
Input -
Output
Operating
Temperature
Operating
Humidity
E3661B-AW1
E3662B-AW1
E7590A-AW1
-
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
5% to 80%
RH,
noncondensing
E7590A-AW3 E7590A-AW5 E3661B-AW3
E3662B-AW3
100-120V,
50/60 Hz
100-120V,
50/60 Hz,
16A
1-IEC 320
C13
Receptacle
5-NEMA
5-15R
Receptacles
5% to 80%
RH,
noncondensing
200-240V,
50/60 Hz
200-240V,
50/60 Hz,
16A
6-IEC 320
C13
Receptacles
5% to 80%
RH,
noncondensing
100-120V,
50/60 Hz
100-120V,
50/60 Hz,
16A
1-IEC 320
C13
Receptacle
9-NEMA
5-15R
Receptacles
5% to 80%
RH,
noncondensing
E3661B-AW5
E3662B-AW5
200-240V,
50/60 Hz
200-240V,
50/60 Hz,
16A
1-IEC 320
C19
Receptacle
10-IEC 320
C13
Receptacles
5% to 80%
RH,
noncondensing
Operating
Environment
10 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Indoor
Location
Indoor
Location
Indoor
Location
Indoor
Location
Indoor
Location
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.
Physical Specifications
The physical specifications for the racks are listed below.
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
All rack models can be loaded with a total of 1800 pounds of equipment.
Figure 1 Exploded view of Keysight Rack
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 11
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.
12 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Figure 3 E7590A Dimensions – Front View
The dimensions of the E3661B are shown below.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 13
Description
Figure 4 E3661B Dimensions— Front View
The dimensions of the E3662B are shown below.
14 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
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.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 15
Figure 6 Air Flow through the rack.
Description
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.
Keysight recommends that you monitor the internal temperature
of the rack. The internal temperature should not exceed the heat
ratingof any installed instruments.
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.
16 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
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).
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 17
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).
18 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
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.
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.
Casters
Each Keysight rack is provided with four, 3-inch diameter, smooth rolling,
heavy-duty casters to facilitate moves over short distances.
A fully loaded cabinet's maximum gross weight of 816kg (1800 lbs)
can overload a raised floor.
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.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 19
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.
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.
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.
20 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Non-Keysight Rail
Non-Keysight rails are used with any non-Keysight products that mount at the
bottom of the EIA envelope. The Non-Keysight rails extend lower into the EIA
envelope than the standard and the VXI rails.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 21
Set Up
Floor Space and Loading
Set Up
This chapter defines the floor loading requirements and set up guidelines.
Observe floor loading requirements (especially raised floors) and ensure
adequate space before moving your Keysight rack, and all safety items while
moving.
At maximum gross weight, the floor must be able to support 677-kg/ sq cm
(2000 lb./sq in).
It is the customer's responsibility to determine the floor loading
capacities at the installation site, and for the entire route when
moving. Failure to do so could result in personal injury and/or
equipment damage.
Because the weight is concentrated on the four casters, a maximum weight rack
requires a reinforced floor. Keysight Technologies recommends removing
components and moving them separately when moving a rack over a floor
(especially a raised floor) of unknown capacity.
Heavily loaded racks may require may require reinforced tiles or a
structure on a raised floor.
Rack Space
Select a location for the rack that will afford adequate space for the door to open
freely, and slide-mounted equipment to be extended.
The rack requires a minimum of 600 mm for rear door clearance.
Equipment Installation Guidelines
Several guidelines should be kept in mind when installing equipment into racks.
The two main considerations are weight and balance (for slide-mounted
equipment), and heat dissipation. This section includes some worksheets for
calculating the weight and balance for slide mounted products and an optional
work surface. A discussion of acoustic considerations is also included.
Always install equipment from the bottom to the top to keep the center of gravity
as low as possible. The order that you put them should be based on how well a
given piece of equipment promotes or impedes heat removal, if heat removal is
an issue.
22 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
In the event that scratches are incurred during equipment installation, note that
touch up paint is available in a spray can via part number 6010-1522C.
Cooling
Instrument racking influences airflow in two significant ways: the proximity to
the rear of the rack, and placement of the highest heat-producing pieces of
equipment. Equipment protruding the closest to the back should be placed
lower, to prevent them from trapping heat and creating eddy currents as shown
in Figure 9.
Figure 9 Good and Bad Examples of Equipment Racking Vs Cooling
Components generating the most heat should be placed closest to the top to
avoid heating the equipment above it as the generated heat rises in the
convection current. Figure 10 shows projected temperature with and without the
extractor fan.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 23
Set Up
Figure 10 Projected Temperature Vs Energy Output
To ensure adequate cooling in systems using an extractor fan assembly, all
unused front panel space must be covered with blank filler panels and the rear
door must be closed.
Weight and Balance
Slide-mounted products and work surface/keyboard products need weight and
balance calculations performed to determine the need for ballast to reduce the
risk of cabinet instability. The worksheets for both are provided on the following
pages. If both slide-mounted and work surface/keyboard products are being
used, calculate both and add the results.
Slide-Mounted Products
To reduce the risk of rack instability when operator serviceable, slide-mounted
products are installed, use the following worksheet to determine the need for
additional counterweight ballast. If there are no operator serviceable, slidemounted products in the rack, this worksheet can be ignored.
An operator serviceable, slide mounted product is defined as any product which
can be extended from the rack for servicing without requiring the use of any tool.
A product requiring the use of a tool to facilitate servicing or extending the
product is the definition of trained service personnel serviceable only. When a
trained service personnel serviceable only product is extended, the use of the
rack stabilizer assembly is required, but counterweight ballast is not. See Figure
11.
24 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Figure 11 Moment Illustration for Slide Mounted Products
Weight and balance worksheet:
1 Total the weight of operator serviceable slide-mounted products: A= lbs; B=
lbs; C=lbs; D=
2 Total the weight of all fixed and trained service personnel serviceable
products:
a=lbs; b=lbs; c=lbs; d=lbs; . . .
3 Calculate the moment for both the operator serviceable slide-mounted
products (M1) and the fixed and trained service personnel serviceable
products (M2) totals from above:
M1 = (A + B + C + D + . . . ) * 1.25 ft =ft/lbs
M2 = 16.1 ft/lbs + (a + b + c + d + . . . ) * 1.00 ft =ft/lbs If M1 is less than or equal
to M2, no additional counter weight is needed.
If M1 is greater than M2, use the formulas below to determine the required
counter weight.
4 Determine required counter weight if M1 is greater than M2:
Force (in lbs) = M1 - M2 ft/lbs ( 2.05 ft = amount of force @ 2.05 ft ) Each ballast
kit weighs 30 lbs
lbs; . . .
Work Surface/Keyboard
To reduce the risk of rack instability when using a work surface as illustrated in
Figure 12, use the following worksheet to determine the need for additional
counterweight ballast. If there are no work surfaces or keyboard mounting kits in
the rack, this worksheet can be ignored.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 25
Figure 12 Moment Illustration for Work Surface
Set Up
Weight and Balance Worksheet:
1. Total the weight of the keyboard/work surface
product: D=ft
2. Total the weight of all fixed and trained service
personnel serviceable slide-mounted products:
a=lbs; b=lbs; c=lbs; d=lbs; . . .
3. Calculate the moment for both the (M1) and the
fixed and trained service personnel serviceable
slide- mounted products (M2) totals from above:
M1 = 180 lbs * D ft =_ft/lbs = moment of rack with 180
lbs of force applied at D feet
M2 = 254.00 ft/lbs + (a + b + c + d + . . . ) * 1.00 ft =ft/lbs
If M1 is less than or equal to M2, no additional counter
weight is needed.
If M1 is greater than M2, use the formulas below to
determine the required counter weight.
4. Determine required counter weight if M1 is
greater than M2:
Force (in lbs) = M1 - M2 ft/lbs ( 2.05 ft = amount of force
@ 2.05 ft) Force (in lbs) = M1 - M2 ft/lbs (Height of
drawer at its center.
26 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
The anti-tip stabilizer is not a substitute for ballast. Use the
anti-tip mechanism when loading or unloading equipment.
The first consideration, after leveling the rack on the leveling feet, and extending
the anti-tip mechanism, is to load the rack from the bottom to the top.
Acoustic Considerations
Airborne audible noise is a primary concern for most system configurations.
Noise from forced convection thermal management solutions such as the
extractor fan is directly proportional to the volume of air passing through the
rack.
Total system noise should be considered during the design phase, as it can
affect areas where the system can be used, operator comfort and safety, and
impact federal and regulatory agency compliance requirements for noise output.
Individual product noise can augment (increase) system noise above extractor
fan ratings due to constructive (additive) interference between various in-place
frequencies, and decrease below the extractor ratings if destructive (subtractive)
interference is present.
Total system noise is impossible to calculate completely accurately. Therefore,
system acoustic performance should be measured to ensure that acoustic goals
are met. However, assuming the worst case (constructive) noise levels, some
general estimating guidelines can be used to combine noise levels of system
products used together. Acoustic sound power and pressure data are
logarithmic (not linear). Thus:
50 dB + 44 dB = 51 dB
Below are two examples to illustrate the point.
Example 1. What is the estimated sound power output of my two-component
system if component 1 contributes 50 dB, and component 2 contributes 65 dB?
Original equation with variable x.
50 dB + 65 dB = x dB
Divide the entire equation by 10. 50/10 dB + 65/10 dB = x/10 dB
Write the equation in powers of 10 ( dB units are Log base 10 units).
x/10
10
Evaluate the left side of the equation. 100,000 + 3,162,277.66 = 10
3,262,277.6 = 10
x/10
x/10
10
5
+ 10
6.5
Take the log of both sides of the equation (return to dB units). log (3,262,277.66)
dB = x/10 dB
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 27
=
Set Up
6.51 dB = x/10 dB Now solve for x:
x = 65.1 dB
Thus, adding 50 dB to 65 dB results in a 0.1 dB increase in noise.
Example 2. What is the maximum estimated noise level of a product I want to
install if the system is currently rated at 65 dB and my limit is 70 dB?
Original equation with variable x. x dB = 70 dB – 65 dB
Divide by 10.
x/10 dB = 70/10 dB – 65/10 dB x/10 dB = 7.0 dB –6.5 dB
x/10 dB = 0.5 dB
Write the equation in powers of 10 (dB units are Log base 10 units).
10
x/10
= 10
0.5
Take the log of both sides of the equation (return to dB units). x/10 dB = log(0.5)
= 6.837 dB
Solve for x. x = 68.37 dB
More than double the noise is required to increase the total noise from 65 dB to
70 dB.
Estimating Total Noise
For a quick estimate of total noise from two sources, see Figure 13 if the two dB
levels are within 16 dB of each other. If the difference is greater than 16 dB, the
effect of the lower noise level is negligible (zero for calculations).
Figure 13 Estimating System Noise
For example, the combination of a 50 dB noise and a 54 dB noise has a
difference of 4 dB. Using Figure 13, 4 dB difference results in adding 1.4 dB to
the higher noise, resulting in an estimated 55.4 dB total noise.
28 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Procedures
Receiving
This chapter describes unpacking and repackaging the Keysight rack for
shipment, and common procedures such as positioning racks, removal and
replacement procedures.
This section contains information pertaining to unpacking, inspection, and
reshipment.
Make sure that all doors, elevators, and passageways in route to the site are
large enough to accommodate the rack.
The packaged physical specifications for the racks are listed below.
Rack Height Wid th Depth Weight
E7590A 1.52 m / 60 in .76 m/ 30 in 1.7 m / 67 in 140.6 kg/310
E3661B 1.8 m / 72 in .76 m/ 30 in 1.7 m / 67 in 161 kg/355 lbs
E3662B 2.2 m / 87.5 in .76 m/ 30 in 1.7 m / 67 in 177 kg/390 lbs
Floor elevators and lifting equipment must be of sufficient capacity.
If the rack package is damaged upon receipt, request that the carrier's agent be
present when the protective covering is removed. Inspect the rack for damage
(scratches, dents, bent pieces, etc.). If the rack is damaged notify the carrier and
the nearest Keysight Technologies Sales and Service office immediately.
Do not lift an unpackaged rack with a fork lift.
lbs
Unpacking and Handling
The lifting brackets supplied with the rack are suitable for lifting the rack when
fully loaded.
Use the following procedure to remove the rack from the shipping base. One
person can perform this procedure.
1 Cut the poly strap bands around the shipping container. See Figure 14.
Wear protective glasses while cutting the plastic bands around the
shipping
they can spring back
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 29
container. These bands are under tension. When cut,
and cause serious eye injury.
2 Lift the cardboard top cap from the shipping box.
3 Remove the corrugated wrap from the pallet.
4 Remove the packing materials.
Procedures
Figure 14 Lifting the Packing Lid Off
5 Remove the folded ramp from the side of the rack.
6 Remove the two bolts (1) holding the anti-roll block in place at the
bottom-rear (see Figures 15). Remove the block.
30 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Figure 15 Unclamping
7 Remove the bolts (2), one on each side, from the shipping clamp at the
bottom of the frame. They are bolted to the pallet.
8 Remove the clamp (3).
9 Unfold and position the ramp so that the block of wood under the ramp locks
into the edge of the pallet, with the strip of wood forming a lip. This holds the
ramp in place while the rack is moved across the pallet and down the ramp.
See Figure 16.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 31
Procedures
Figure 16 Positioning the Ramp
10 Raise the leveling feet all the way up before moving the rack.
Make sure that the leveling feet on the rack are raised before you
roll the rack down the ramp, and any time you roll the rack on the
casters.
Repackaging the Rack for Shipment
Use the original packing material to repackage the empty rack for shipment.
Before shipment, securely place a tag on the container (and equipment) to
identify the owner and the service to be performed. Include the rack model
number.
To repackage the rack, follow the repackage checklist below, and refer to the
unpacking instructions for details.
1 Assemble the original Keysight packing materials.
2 Connect the loading ramp to the pallet.
32 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
3 Raise the leveling feet.
4 Push the rack up the ramp, front first.
5 Secure the rack to the pallet with the shipping clamps, shipping block, and
rear door support.
6 Place the anti-static bag over the rack.
7 Place the top cap packing material and loading/unloading ramp on top of the
rack.
8 Place the corrugated wrap around the rack.
9 Put the box top on the box.
10 Secure the top to the pallet with top-to-bottom plastic bands.
Removal and Replacement
This section provides removal and replacement procedures for the standard
assembly.
Rear Door Removal
1 Open rear door.
2 Disconnect the bonding wire from the door.
3 Grasp the rear door support and lift the door straight up and away from the
cabinet.
Rear Door Replacement
1 Hold the rear door by the support column.
2 Align the door hinge pins over the rack hinge holes.
3 Lower the door onto the rack hinge.
4 Reconnect the door onto the rack hinge.
Top Cap Removal
1 Open the rear door all the way.
2 Remove the two outside mounting screws at the top-rear of the rack.
3 From the rear of the rack, pull the top cap toward the back a few inches.
4 Lift the top cap from the rack.
Top Cap Replacement
1 Open the rear door all the way.
2 From the rear of the rack, place the top cap between the side covers and slide
it forward until it stops.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 33
Procedures
3 Insert and tighten the two mounting screws at the top-rear.
4 Close the rear door.
Side Cover Removal
1 Remove the two mounting screws at the bottom of the rack.
2 On the right-side cover, open the rear door and remove the two mounting
screws on the upper door hinge (that secure the hinge to the side panel).
3 Grasp the sides of the side cover and pull it up and away from the rack.
Side Cover Replacement
1 Grasp the sides of the side cover and align it with the rack at a vertical angle
with the bottom out and the top toward the top of the rack.
2 Hook the top of the side cover over the top of the rack.
3 With the side cover up flush against the frame, replace the two mounting
screws at the bottom of the rack.
4 On the right-side cover, insert and tighten the two mounting screws on the
upper door hinge (that secure the hinge to the side panel).
Forehead Assembly Removal
1 Turn the power OFF. Disconnect AC power to the rack.
2 Remove top cap assembly (refer to top cap removal).
3 Unplug the PDU harness(es) from the back of the main power switch (if
present).
4 Remove the three mounting screws behind the forehead assembly.
5 Lift the forehead assembly up and away from the rack frame.
Forehead Assembly Replacement
1 Align the forehead assembly at the top of the rack frame, so the three
mounting holes match the frame holes, and the mounting hooks on each side
engage the mounting slots.
2 Insert the three mounting screws through the frame into the forehead
assembly.
3 If appropriate, attach the PDU harness(es) to the main power switch
terminals. Slip-on connectors mate with spade terminals on the back of the
switch. Ensure each connector is fastened.
34 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Connections from the PDU front panel switch harness and the
switch in the
PDU operation. Failure to do
inconsistent PDU operation
4 Replace the top cap (refer to top cap replacement).
5 If appropriate, connect AC power to the cabinet.
6 Turn the main power switch ON.
forehead must be made correctly to ensure normal
so can result in PDU failure or
.
Base Cover Removal
1 Remove the mounting screw located on the top edge, center, of the base
cover.
2 Pull the base cover away from the bottom of the rack.
Base Cover Replacement
1 Align the base cover at the bottom of the rack and roll the base cover until the
mounting holes in the rack and base cover align.
2 Insert and tighten the mounting screw.
Anti-tip Stabilizer Removal
1 Extend the anti-tip stabilizer until it stops.
2 Lift the two sidebars that go into the rack frame, and pull the stabilizer away
from the rack.
Anti-tip Stabilizer Replacement
1 Align the two extension arms with the opening at the bottom of the rack, and
insert the arms at an angle. This allows the stop tabs to go into the rack
cavity for the stabilizer.
2 Push the anti-tip stabilizer all the way into the rack.
Rear Door Hinge Removal
1 Remove the rear door (refer to Rear Door Removal).
2 Remove the two mounting screws from the rack column (on the upper hinge,
also remove the two mounting screws in the side panel), and lift the door
hinge away.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 35
Procedures
Rear Door Hinge Replacement
1 Align the door hinge with the pressed nuts in the rear rack column.
2 Insert and tighten the two mounting screws through the hinge into the
column (on the upper hinge, also insert the two mounting screws into the
side panel).
Rail Removal
This procedure is also used to remove a rail clamp.
1 Remove the component mounted on the rail being removed.
Be sure to tag the cables disconnected for easy reconnection.
2 Remove the two rail mounting screws.
3 Lift the rail out of its notches in the support columns.
4 To remove the rail clamp, remove the clamp screw and slide the clamp out of
the rail groove.
Rail Replacement
1 Slide the rail clamp onto the rail.
2 Insert the rail tabs into the appropriate support column notches.
3 Insert and tighten the two mounting screws through the rail into the clip nuts
on the column.
4 Reinstall the component.
5 Slide the rail clamp up to the rear of the component and insert the clamp
screw.
Leveler or Caster Removal
1 Turn the rack power switch OFF.
2 Disconnect AC power to the rack.
3 Carefully move the rack to an area with enough room to allow the rack to be
laid on its side.
4 Remove all equipment components from the rack.
5 Carefully lay the rack on its side.
6 Unscrew the leveler, or remove the castor by removing the four mounting
nuts and pulling the castor off.
36 Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0
Leveler or Caster Replacement
1 With the rack on its side, screw in the leveler, or place the castor over the four
mounting studs and attach with the four mounting nuts.
2 Carefully lift the rack to the upright position.
3 Install all equipment components.
4 Return the rack to its install site.
5 Reconnect AC power.
Ballast Removal
Remove the two screws holding the ballast on the rear rack columns. Use
caution not to drop the ballast when removing these screws.
The ballast weighs 30 lbs and can damage equipment or cause
personal injury if
dropped.
Ballast Replacement
Attach the ballast to the rear columns using the two screws. Ballast should be
installed at the bottom of the rack, resting adjacent to the rear base. If ballast
cannot be installed at the base of the rack, it can be installed using the rack
shelf.
Install additional ballast adjacent to each other so that they provide support for
each other.
If ballast cannot be installed at the bottom of the rack, it can be
installed using
support up to four ballast (120 lbs)
moving or shipping a rack
the plain rack shelf. The plain rack shelf can
units. Remove ballast before
.
Door Bumper
The rear and front door bumpers are self-adhesive rubber bumpers stuck to the
door. Remove by prying off with a flat bladed screwdriver. Apply by peeling off
the adhesive cover and pressing into place.
Keysight Instrument Rack E7950A-1.3m E3661B-1.6m E3662B-2.0 37
This information is subject to change
without notice
© Keysight Technologies 2015
Edition 3 August 2015
Published in USA
967-9318
5
www.keysight.com
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