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Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Introduction
This instruction sheet contains the parts list and installation information for the Keithley Instruments Model
4299-3 Universal Single Unit Rack Mount Kit. This kit includes all the hardware necessary to mount one
half-rack instrument (either a Keithley Instruments or Agilent unit) excluding the Keithley Instruments Series
2600 or other products that are designed to use the rear support feature in a standard 19-inch rack.
Parts list
Table 1 lists the parts supplied with the Model 4299-3 Single Unit Universal Rack Mount Kit.
Table 1
Model 4299-3 parts list
Quantity
Description
1
Front rack ear
4
Cage nut
1
"DO NOT DISCARD" label
4
#8-32 x 3/8 LG Phillips pan head screw
4
#10-32 x 5/8 LG Phillips truss head screw
1
Half-rack front panel
4
M4 x 12 Phillips pan head screw
Installation
The following procedure outlines the installation of the rack mount kit.
WARNING
Make sure the instrument that is being installed is in a powered down state
with all cables unplugged. Failure to install an instrument in a discharged
state may cause an electrical shock or death.
CAUTION
Place the hottest equipment (for example, the power supply) at the top of the rack.
Place precision equipment as low as possible in the rack (where temperatures are
cooler).
Follow instructions included with Keithley Instruments equipment for rack mounting.
PA-942 Rev. C / February 2008
Universal Single Unit Rack Mount Kit
Keithley Instruments part number
2602-355
FA-274
MC-345
8-32X3/8PPH
10-32X5/8PHTRSH
2602-363
M4X12PPH
Model 4299-3
1
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Summary of Contents for Keithley 4299-3
- Page 1 This instruction sheet contains the parts list and installation information for the Keithley Instruments Model 4299-3 Universal Single Unit Rack Mount Kit. This kit includes all the hardware necessary to mount one half-rack instrument (either a Keithley Instruments or Agilent unit) excluding the Keithley Instruments Series 2600 or other products that are designed to use the rear support feature in a standard 19-inch rack.
-
Page 2: Step 1: Prepare The Instrument
Model 4299-3 Universal Single Rack Mount Kit Installation Instructions NOTE 1U is a standard vertical spacing and is equal to 1.75 inches. Typical distance between the mounting holes on rack rails is 0.125 inches (1/8 inch). Step 1: Prepare the instrument To prepare the instrument for mounting, remove the handle, the mounting ears, and both rear feet. - Page 3 Model 4299-3 Universal Single Rack Mount Kit Installation Instructions Step 2: Install mounting hardware on instrument NOTE The instrument may be installed on the rack’s right side with the half-rack front panel on the left side (as shown in the following illustrations), or on the rack’s left side with the half-rack front panel on the right side (not shown).
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Page 4: Step 3: Prepare The Rack
Model 4299-3 Universal Single Rack Mount Kit Installation Instructions Step 3: Prepare the rack 1. Install the cage nuts (FA-274) into the front rack holes for the front rack ear and the half-rack front panel (see Figure 3). NOTE Cage nuts for the front rack ear, half-rack front panel should be installed into the rails at the same hole spacing (vertical height). -
Page 5: Step 4: Install The Instrument
Model 4299-3 Universal Single Rack Mount Kit Installation Instructions Step 4: Install the instrument NOTE When rack-mounting restricts access to the main power cord, provide a separate main power disconnect device. This device must be located in close proximity to the equipment and within easy reach of the operator.
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