Keithley Instruments
2450-BenchKit Benchtop Kit
2450-RACK
2460-NFP-RACK
2470-RACK
2450-NFP-RACK
2461-RACK
DMM7510-RACK
2460-RACK
2461-NFP-RACK
DMM7510-NFP-RACK
1 Front bumper
1
2450-309
2 Rear bumper
1
2450-310
3 Handle mounts
2
2450-330
4 Handle mount caps
2
2450-329
5
6-32 × 3/4 Phillips flat-head screws
2
N/A 6
6-32 × 3/8 Phillips flat-head screws
2
N/A
7 Handle assembly
1
2450-331
28775 Aurora Road
Cleveland, Ohio 44139
1-800-935-5595
tek.com/keithley
Installation Instructions
Introduction
The Keithley Instruments Model 2450-BenchKit contains the hardware that you need to set up any of the
following instruments for use on a benchtop:
Figure 1: Model 2450-BenchKit
Number Description Quantity Keithley part number
071315803 / May 2019 *P071315803* 1
2450-BenchKit Benchtop Kit Installation Instructions
Installatio n precautions
Turn off instrument power and unplug all ca bles before installing the Model 2450-BenchKit
hardware. Failure to remove power before installation may cause personal injury or death
from electrical shock.
To prevent overheating and ensure specified performance, keep the exhaust vents free of
obstructions. Adequate airflow ensures that air temperatures around the instrument remain
within specified limits under all operating conditions. Even partial blockage may impair
proper cooling.
Installing the Model 2450-BenchKit
To install the bench kit:
1. Assemble and install the handle mounts (on page 2
)
2. Install the handle (on page 4)
3. Install the bumpers (on page 4)
The following topics contain instructions for each of these steps.
Assemble and install the handle mounts
To install the handle-mount assemblies:
1. Insert one of the handle-mount caps into the flat end of one of the handle mounts. Make sure that the
raised flange on the handle-mount cap is facing the same direction as the raised flanges on the handle
mount.
Figure 2: Inserting handle-mount caps
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2450-BenchKit Benchtop Kit Installation Instructions
2. Align the handle-mount and cap assembly with the two lower mounting holes on one side of the instrument.
Make sure that the flat edge of the assembly is facing the rear of the instrument and the raised flanges are
placed inside the mounting holes.
Figure 3: Installing the handle-mount assembly
3. Insert one of the 6-32 × 3/4 screws through the handle-mount assembly into the mounting hole that is
closer to the rear of the instrument. Tighten using a Phillips screwdriver.
4. Insert one of the 6-32 × 3/8 screws through the handle-mount assembly into the mounting hole that is
closer to the front of the instrument. Tighten using a Phillips screwdriver.
5. Repeat steps 1 through 4 to attach the remaining handle-mount assembly to the other side of the
instrument.
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2450-BenchKit Benchtop Kit Installation Instructions
Install the handle
To install the handle assembly:
1. Holding the handle assembly above the top of the instrument, gently pull the handle ends apart to widen
the handle as you slide it over the instrument case.
Figure 4: Installing the handle
2. Align the raised flanges in the handle with the large holes in the handle-mount assembly and release the
ends of the handle.
3. Swing the handle below the bottom surface of the instrument to tilt the instrument up for easier front-panel
viewing.
Install the bumpers
The instrument bumpers are shaped differently for the front and rear panels:
The front-panel bumper has a large notch on each side to allow the handle to move freely.
The rear-panel bumper has feet to protect the rear panel connectors when it is in a standing position.
To install the front and rear bumpers
1. Align the front bumper so that the side notches are closer to the bottom of the instrument.
2. Slide the bumper over the front panel of the instrument.
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2450-BenchKit Benchtop Kit Installation Instructions
Figure 5: Installing the front bumper
3. Push the bumper evenly toward the instrument until it snaps into place.
4. Align the rear bumper so that the feet of the bumper face away from the rear panel.
5. Slide the bumper over the rear panel of the instrument.
Figure 6: Installing the rear bumper
6. Push the bumper evenly toward the instrument until it snaps into place.
071315803 / May 2019 5
Safety precaut ions
The following safety precautions should be observed before using this product and any associated instrumentation. Although
some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous
conditions may be present.
This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required
to avoid possible injury. Read and follow all installation, operation, and maintenance information carefully before using the
product. Refer to the user documentation for complete product specifications.
If the product is used in a manner not specified, the protection provided by the product warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the
equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the
instrument. They must be protected from electric shock and contact with hazardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line
voltage or replacing consumable materials. Maintenance procedures are described in the user documentation. The procedures
explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.
Service personnel are trained to work on live circuits, perform safe installations, and repair products. Only properly trained
service personnel may perform installation and service procedures.
Keithley products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low
transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient
overvoltages. Measurement Category II (as referenced in IEC 60664) connections require protection for high transient
overvoltages often associated with local AC mains connections. Certain Keithley measuring instruments may be connected to
mains. These instruments will be marked as category II or higher.
Unless explicitly allowed in the specifications, operating manual, and instrument labels, do not connect any instrument to mains.
Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test
fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than
30 V RMS, 42.4 V peak, or 60 VDC are present. A good safety practice is to expect that hazardous voltage is present in any
unknown circuit before measuring.
Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operator s
are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential
human contact. Product operators in these circumstances must be trained to protect themselves from the risk of electric shock. If
the circuit is capable of operating at or above 1000 V, no conductive part of the circuit may be exposed.
For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under
test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or disconnecting
cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.
Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the
voltage being measured.
For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or
accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be
impaired.
Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the
specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.
Chassis connections must only be used as shield connections for measuring circuits, NOT as protective earth (safety ground)
connections.
The WARNING heading in the user documentation explains hazards that might result in personal injury or death. Always read
the associated information very carefully before performing the indicated procedure.
6 071315803 / May 2019
The CAUTION heading in the user documentation explains h az ards that coul d dama ge the instrument. Such damage may
invalidate the warranty.
The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or minor
injury or damage the instrument. Always read the associated information very carefully before performing the indicated
procedure. Damage to the instrument may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in mains circuits — including the power
transformer, test leads, and input jacks — must be purchased from Keithley. Standard fuses with applicable national safety
approvals may be used if the rating and type are the same. The detachable mains power cord provided with the instrument may
only be replaced with a similarly rated power cord. Other components that are not safety-related may be purchased from other
suppliers as long as they are equivalent to the original component (note that selected parts should be purchased only through
Keithley to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement
component, call a Keithley office for information.
Unless otherwise noted in product-specific literature, Keithley instruments are designed to operate indoors only, in the following
environment: Altitude at or below 2,000 m (6,562 ft); temperature 0 °C to 50 °C (32 °F to 122 °F); and polluti on degree 1 or 2.
To clean an instrument, use a cloth dampened with deionized water or mild, water-based cleaner. Clean the exterior of the
instrument only. Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that
consist of a circuit board with no case or chassis (e.g., a data acquisition board for installation into a computer) should never
require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board
should be returned to the factory for proper cleaning/servicing.
Safety precaution revision as of June 2017.
071315803 / May 2019 7
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