Keithley 4299-11 Assembly And Mounting Instructions

Model 4299-11 Universal Fixed Rack-Mount Kit

Keithley Instruments, Inc.

28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY

http://www.keithley.com

Assembly and Mounting Instructions

Introduction

The Model 4299-11 Dual Fixed Rack-Mount Kit for one 2U Graphical Display Instrument and one Series 24XX,
Series 2000, or 2U Agilent Instrument contains all the hardware you need to install a Graphical Display
instrument and an adjacent 2U instrument in a standard 19-inch equipment rack. The adjacent instrument can
be a Keithley Instruments Series 24xx or Series 2000, or a standard Agilent 2U instrument.

1U is a standard vertical spacing that is equal to 1.75 inches (about 4.45 cm).

Figure 1: Typical installation (instruments and rack not included)

Tools required

• Medium (#2) Phillips head screwdriver

• 3/8" wrench

• Flat-bladed screwdriver or cage nut installation tool, such as Knurr part number 01.130.985.9

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Model 4299-11 Universal Fixed Rack-Mount Kit

Parts list

The following figure shows the hardware that is supplied with this kit. The following table lists the hardware, part
number, and quantity.

Figure 2: Model 4299-11 Rack Mount Kit parts

# Description Part number Quantity

1 Front-rack ear (Graphical Display) 2450-360 1
2 Front-rack ear 2602-355 1
3 Shelf clip 2450-364 1
4 Hinge (Graphical Display) 2450-361 1
5 Hinge 2602-328 1
6 Hinge pin FA-352 1
7 Support shelf 2450-363 1
8 Cage nut FA-274 4
9 Carriage bolt 212026400 1
10 10-32 x 5/8" Phillips truss head screw 10-32X5/8PHTRSH 4
11 10-32 x 1/2" Phillips pan head screw 10-32X1/2PPHSEM 4
12 8-32 x 3/8" Phillips flat head screw 8-32X3/8PFH 2
13 6-32 x 7/16" Phillips flat head screw 6-32X7/16PFH 2

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Model 4299-11 Universal Fixed Rack-Mount Kit

# Description Part number Quantity

14 6-32 x 5/8" Phillips pan head screw 6-32x5/8PPHSEM 2
15 10-32 Keps® washer nut 10-32KEPNUT 5
16 8-32 x 3/8" Phillips pan head screw 8-32X3/8PPH 2
17 M4 x 12 mm Phillips pan head screw M4X12PPH 2
18 M4 x 12 mm Phillips flat head screw M4X12MMPFH 2

Installation

To install a single Graphical Display instrument and an adjacent 2U instrument using the Model 4299-11 Fixed
Rack-Mount Kit:

1. Review the installation precautions ( on pa ge 3

).

2. Select a location in the rack.

3. Take steps to make it easier to manipulate and install the Graphical Display instrument:

• Clear as much space as possible around the selected rack location

• If practical, remove the cabinet sides from the rack

4. Perform the installation procedure beginning with Step 1: Prepare the rack (on page 4

Installation precautions

Observe the following safety precautions while installing instruments.

Turn off instrument power and unplug a ll cables before installing an instrument in a rack.
Failure to remove power before i n stallation may cause personal injury or death from electrical
shock.

Heat sources should be mounted away from the instrument, its cabling, and its accessories, with
sufficient space provided between the instrument and heat source for airflow and cooling.

).

To prevent damaging heat build-up and ensure specified performance, make sure there is adequate
ventilation and air flow around the instrument to ensure proper cooling. Do not cover the ventilation
holes on the top, sides, or bottom of the instrument.

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Model 4299-11 Universal Fixed Rack-Mount Kit

Step 1: Prepare the rack

To prepare the rack for installation, install the cage nuts and the support shelf for the selected location.

To install the cage nuts on the rack rails:

1. Using the front-rack ear (2450-360) as a guide, mark holes for the selected installation location (four places
total, two for each rail).

2. Install the cage nuts (1) in the backside of each rail hole (2) where marked in step 1. To install a cage nut,
place the bottom lip of the nut so it rests in the rail hole. If you are using a cage nut installation tool, through
the rail hole, grab the top lip of the nut with the tool and pull (3) until the nut snaps in place. Repeat for each
cage nut.

Figure 3: Install the cage nuts

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Model 4299-11 Universal Fixed Rack-Mount Kit

You can install the Graphical Display instrument on either side of the rack. The following steps
describe installation of the instrument on the left side of the rack. To install the instrument on the
other side, install the support shelf (2450-363) on the right side of the rack (not shown).

To install the support shelf in the rack:

1. Align the support shelf (1) with the installed cage nuts (2).

2. Secure the support shelf (1) with 10-32 x 1/2" screws (3) and nuts (4) as shown (four places).

Figure 4: Install the support shelf

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