Datasheet

Model 2461 Interactive SourceMeter® Instrument User's Manual Section 2: Using the front-panel interface
2461-900-01 Rev. A / November 2015 2-3
REMOTE LED
indicator
Illuminates when the instrument is controlled through a remote
interface.
LAN LED indicator
Illuminates when the instrument is connected to a local area network
(LAN).
1588 LED indicator
Illuminates when the instrument is connected to an IEEE-1588
compliant device.
Note that 1588 functionality is not supported at this time. This
functionality will be made available with a firmware update. See the
Model 2461 Release Notes on the Keithley Instruments website
(http://www.keithley.com) for details.
INTERLOCK LED
indicator
Illuminates when the interlock is enabled.
SENSE terminals
Use the SENSE HI and SENSE LO terminal connections to measure
voltage at the device under test (DUT). When you use sense leads,
measurement of the voltage drop across the force leads is
eliminated. This produces more accurate voltage sourcing and
measurement at the DUT.
FORCE terminals
Use FORCE HI and FORCE LO terminal connections to source or
sink voltage or current to or from a device under test (DUT).
FRONT/REAR
TERMINALS switch
Activates the 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.
Chassis connection
Banana jack connector that provides a chassis connection.
Power the instrument on or off
Follow the steps below to connect the Model 2461 to line power and turn on the instrument. The
Model 2461 operates from a line voltage of 100 V to 240 V at a frequency of 50 Hz or 60 Hz. It
automatically senses line voltage and frequency. Make sure the operating voltage in your area is
compatible.
You must turn on the Model 2461 and allow it 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 2461 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.