Model 6487 Reference Manual
Remote Calibration
F-3
Remote calibration overview
The steps below outline the general procedure for calibrating the Model 6487 using
remote commands. Refer to
for details on calibration steps, calibration points,
and test equipment connections.
1.
Send the following command to unlock calibration:
:CAL:PROT:CODE 'KI006487'
Note that the above command uses the factory default code.
2.
Perform voltage offset correction by sending the following command:
:CAL:UNPR:VOFF
Be sure a triax shielding cap is connected to the INPUT jack before sending the
above command.
3.
Send the appropriate command to select the current range to be calibrated. For
example, the following command selects the 20mA range:
:SENS:CURR:RANG 2e-2
4.
Make appropriate connections (see
), then send the
commands for each calibration point for the selected function and range. For exam-
ple, send the following commands for the 20mA range:
:CAL:PROT:SENS 0
:CAL:PROT:SENS 2e-2
:CAL:PROT:SENS –2e-2
5.
Repeat steps 3 and 4 for each range (
).
t^okfkd
Hazardous voltages will be present during voltage source calibration
steps. Use care to avoid a shock hazard. The interlock must be closed
to calibrate the 50V and 500V ranges. See
for interlock
information.
6.
Be sure the DMM is connected to the Model 6487 voltage source terminals (see
), then send the commands for each calibration point for the selected
range, as summarized in
. Be sure to include the actual DMM reading for
each step where shown.
7.
Repeat step 6 for each voltage source range.
8.
After all current and voltage source ranges are calibrated, send the commands to
program the calibration dates; for example:
:CAL:PROT:DATE 2002,12,15
:CAL:PROT:NDUE 2003,12,15
9.
Finally, send the following commands to save calibration constants and then lock
out calibration:
:CAL:PROT:SAVE
:CAL:PROT:LOCK
