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Verification and Calibration - B
75
Calibrating and Entering rms Current Measurement Values
Action Display
40. Connect the DVM (ac rms mode), current shunt, and load resistor as shown
in figure B-1 with S1 closed.
41.
Press Shift Calibration, scroll to the CAL CURR MEAS command, and
press Enter.
CAL:CURR:MEAS
42.
Press Shift Calibration, scroll to the CAL LEV P1 command, and press
Enter.
CAL:LEV P1
43.
Press Shift Calibration, scroll to the CAL DATA 0.00 command.
Calculate the rms current value (DVM ac rms voltage/shunt resistance), and
use the Entry keypad to enter the rms current.
CAL:DATA 0.00
44.
Press Shift Calibration, scroll to CAL LEV P1 command, use ° to scroll
to the P2 parameter, and press Enter.
CAL:LEV P2
45.
Press Shift Calibration, scroll to the CAL DATA 0.00 command.
Calculate the rms current value (DVM ac rms voltage/shunt resistance), and
use the Entry keypad to enter the rms current.
CAL:DATA 0.00
The ac source is now holding the new rms current measurement calibration constants in RAM.
Calibrating the Output Impedance
Action Display
46. Connect only the output impedance resistor across the output of the ac
source. Do not connect any other equipment.
47.
Press Shift Calibration, scroll to the CAL IMP command, and press
Enter.
CAL:IMP
48. Wait for the ac source to compute the output impedance calibration
constant. The display returns to Meter mode when the calculation is
complete.
The ac source is now holding the new output impedance calibration constants in RAM.
Saving the Calibration Constants
CAUTION: Storing calibration constants overwrites the existing ones in non-volatile memory. If you
are not sure you want to permanently store the new constants, omit this step. The ac
source calibration will then remain unchanged.
Action Display
49.
Press Shift Calibration, scroll to CAL SAVE, and press Enter.
CAL:SAVE
50.
Press Shift Calibration, select CAL OFF, and press Enter to exit
Calibration mode. *RST and *RCL will also set the calibration state to
OFF.
CAL OFF