Power The Instrument On Or Off - Keithley 2450 Reference Manual

Section 2: General operation
Force terminals
FRONT/REAR
TERMINALS switch
Chassis
connection

Power the instrument on or off

Follow the procedure below to connect the Model 2450 to line power and turn on the instrument. The
Model 2450 operates from a line voltage of 100 V to 240 V at a frequency of 50 Hz or 60 Hz. Line
voltage is automatically sensed. Make sure the operating voltage in your area is compatible.
The Model 2450 must be turned on and allowed to warm up for at least one hour to achieve rated
accuracies.
Operating the instrument on an incorrect line voltage may cause damage to the instrument, possibly
voiding the warranty.
The power cord supplied with the Model 2450 contains a separate protective earth (safety
ground) wire for use with grounded outlets. When proper connections are made, the
instrument chassis is connected to power-line ground through the ground wire in the power
cord. In addition, a redundant protective earth connection is provided through a screw on
the rear panel. This terminal should be connected to a known protective earth. In the event
of a failure, not using a properly grounded protective earth and grounded outlet may result
in personal injury or death due to electric shock.
2-4
Model 2450 Interactive SourceMeter® Instrument Reference Manual
Use FORCE HI and FORCE LO terminal connections to source
or sink voltage or current to or from a device under test (DUT).
Press the FRONT/REAR TERMINALS switch to activate
terminals on the front or rear panel. When the front-panel
terminals are active, a green "F" is visible to the left of the
FRONT/REAR switch. When the rear-panel terminals are active, a
yellow "R" is visible to the left of the switch.
Banana jack connector that provides a chassis connection.
2450-901-01 Rev. B/September 2013