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Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Introduction
This instruction sheet contains a parts list and installation information for the Model 4299-3 Universal Single Unit
Rack Mount Kit. This kit includes all hardware necessary to mount one half-rack instrument (either Keithley, or
Agilent unit) excluding the 260x or other products that are designated 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 Kit4299-1 parts list
4266-1 parts list
Quantity
Description
1
Front Rack Ear
6
Cage Nut
1
"DO NOT DISCARD" Label
4
#8-32 X 3/8 LG Phillips Pan Head Screw
6
#10-32 X 5/8 LG Phillips Truss Head Screw
1
Half Rack Front Panel
4
M4X12 Phillips Pan Head Screw
PA-942 Rev. A / May 2007
Universal Single Unit Rack Mount Kit
Keithley Part Number
2602-333
FA-274
MC-345
8-32X3/8PPH
10-32X5/8PHTRSH
2602-344
M4X12PPH
Model 4299-3
1
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Summary of Contents for Keithley 4299-3
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Page 1: Parts List
Agilent unit) excluding the 260x or other products that are designated 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 Kit4299-1 parts list 4266-1 parts list Quantity... - Page 2 Place precision equipment as low as possible in the rack (where temperatures are cooler) • Follow instructions included with Keithley equipment for rack mounting. 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” (1/8”).
- Page 3 Model 4299-3 Installation Instructions Figure 1 Remove handle and mounting ears Mounting ear Handle Mounting ear Screw 2. Remove both rear feet from the instrument by pulling out the rubber feet and then removing the screws underneath. NOTE Do not re-install the feet mounting screws. Save all parts removed for future bench top use of the instrument.
- Page 4 Model 4299-3 Installation Instructions Figure 2 Attach rack ear and dress panel to instrument Pan Head Screw (Phillips) 8-32x3/8PPH (2 Places) Rear Front mounting mounting holes holes **When installing a 2100-DMM or Agilent unit, use FRONT M4x12 screws in the front mounting holes; otherwise use 8-32x3/8 screws in rear mounting holes.
- Page 5 Model 4299-3 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 (refer to 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 6 Model 4299-3 Installation Instructions Figure 4 Instrument Installation Rack Rails (not included) Truss Head Screw (Phillips) 10-32x5/8PHTRSH (2 Places) FRONT Truss Head Screw (Phillips) 10-32x5/8PHTRSH (2 Places) PA-942 Rev. A / May 2007...
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