Section 4: Adjustment
Model 2461 Calibration and Adjustment Manual
4-8
2461-905-01 Rev. A / February 2016
Step 2. Voltage adjustment
1. With the source output off, connect the Keithley Model 2461 to the digital multimeter (DMM) as
shown in
Connections for the 200 mV to 100 V ranges
(on page 2-4).
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 volts function.
4. Initialize voltage adjustment by sending the commands summarized in the following table in the
order listed.
When the
:CALibrate:UNLock
command is sent, the instrument assumes the operating states
listed in the "Calibration unlocked states" table in
Unlocking calibration for adjustment
(on page 4-1).
Voltage adjustment initialization commands
Command
Description
*RST
Restore instrument defaults.
:SOUR:FUNC VOLT
Activate the voltage source.
:SENS:CURR:RANG 0.1
Make sure the 1 A range is not active.
:SOUR:VOLT:PROT:LEV NONE
Allow maximum source voltage.
:SYST:RSEN OFF
Disable remote sensing.*
:CAL:UNL "KI002400"
Unlock the calibration constants.
:ROUT:TERM <FRONT
or
REAR>
Select the front-panel or rear-panel terminals to
match your test setup.
:OUTP:STAT ON
Turn the source output on.
* Remote sensing may be used, but is not required when using a recommended digital multimeter.
