Calibration 14-15
9.
Note and record the DMM voltage reading, then calculate the current from that reading
and 4
Ω
resistor value. Send the following command using that calculated current as the
parameter:
:CAL:PROT:STEP14 <Calculated_Current>
For example, with a current value of 1.894A, the command would appear as follows:
:CAL:PROT:STEP14 1.894
10.
Note and record a new DMM voltage reading, then again calculate the current from the
voltage and resistance. Send the calculated current value as the parameter for the
following command:
:CAL:PROT:STEP15 <Calculated_Current>
11.
Connect the characterized 3k
Ω
resistor in place of the 4
Ω
resistor (
).
12.
Make sure the DMM DC volts function and auto-range are still selected.
13.
Send the following command to output approximately 5mA for 5mA full-scale
calibration:
:CAL:PROT:STEP16
14.
Note and record the DMM voltage reading, then calculate the current from the voltage
reading and actual 3k
Ω
resistance value. Send that current value as the parameter for the
following command:
15.
:CAL:PROT:STEP17 <Calculated_Current>
Step 4: Program calibration date
Use following command to set the calibration date:
:CAL:PROT:DATE <yyyy>, <mm>, <dd>
Note that the year, month, and date must be separated by commas. The allowable range for
the year is from 1998 to 2097, the month is from 1 to 12, and the date is from 1 to 31.
Step 5: Save calibration constants and lock out calibration
Calibration is now complete, so you can store the calibration constants in EEROM by sending
the following command:
:CAL:PROT:SAVE
NOTE
Calibration will be temporary unless you send the SAVE command. Calibration data
will not be saved if (1) calibration is locked, (2) invalid data exists, or (3) all steps
were not completed in the proper sequence. In that case, the unit will revert to
previous calibration constants.
After saving constants, lock out calibration by sending:
:CAL:PROT:LOCK
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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