Model 2461 Calibration and Adjustment Manual
Section 4: Adjustment
2461-905-01 Rev. A / February 2016
4-11
Current adjustment for the 1 µA to 1 A ranges
1. With the source output off, connect the Model 2461 to the digital multimeter (DMM) using the
Connections for the 1 µA to 1 A ranges
(on page 2-5).
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the Model 2461
while the instrument is powered on. Turn off the equipment from the front panel or
disconnect the main power cord from the rear of the Model 2461 before handling cables.
Putting the equipment into standby does not guarantee that the outputs are powered off if a
hardware or software fault occurs.
2. Turn on the Model 2461 source output.
If the Model 2461 is not already warmed up, allow it to warm up for at least one hour before
continuing to the next step.
3. On the DMM, select the DC current function.
4. Send the commands summarized in the following table in the order listed to initialize current
adjustment.
Current adjustment initialization commands
Command
Description
*RST
Restore instrument defaults.
:SOUR:FUNC CURR
Select the source current mode.
:FUNC "CURR"
Select the measure function.*
:CAL:UNL "KI002400"
Unlock the calibration constants.
:ROUT:TERM <FRONT
or
REAR>
Select the front-panel or rear-panel terminals that match
your test setup.
:OUTP:STAT ON
Turn source output on.
* The measure range is coupled to the source range when simultaneously sourcing and measuring current,
so you do not need to set the measure range.
