Calibrating The Ovp Trip Point; Calibrating And Entering Rms Current Values - Agilent Technologies 6811B User Manual

B - Verification and Calibration
Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to
26.
scroll to the P2 parameter, and press Enter. This selects the second
calibration point.
27. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry
keypad to enter the product of the transformer ratio times the ac voltage
value displayed on the DVM.
Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to
28.
scroll to the P3 parameter, and press Enter.
29. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry
keypad to enter the product of the transformer ratio times the ac voltage
value displayed on the DVM.
Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to
30.
scroll to the P4 parameter, and press Enter.
31. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry
keypad to enter the product of the transformer ratio times the ac voltage
value displayed on the DVM.
The ac source is now holding the new ac rms voltage calibration constants in RAM.

Calibrating the OVP Trip Point

Action
32. Press Shift Calibration, scroll to CAL VOLT PROT, and press Enter.
33. Wait for the ac source to compute the OVP calibration constant. The
display returns to Meter mode when the OVP calculation is complete.
The ac source is now holding the new OVP calibration constants in RAM.

Calibrating and Entering rms Current Values

Action
34. Connect the DVM (ac rms mode), current shunt, and load resistor as shown
in figure B-1 with S1 closed.
35. Press Shift Calibration, scroll to the CAL CURR AC command, and
press Enter.
36. Press Shift Calibration, scroll to the CAL LEV P1 command, and press
Enter.
37. 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.
Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to
38.
scroll to the P2 parameter, and press Enter.
39. 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.
The ac source is now holding the new rms current calibration constants in RAM.
74
CAL:LEV P2
CAL:DATA 0.00
CAL:LEV P3
CAL:DATA 0.00
CAL:LEV P4
CAL:DATA 0.00
Display
CAL:VOLT:PROT
Display
CAL:CURR:AC
CAL:LEV P1
CAL:DATA 0.00
CAL:LEV P2
CAL:DATA 0.00