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B - Verification and Calibration
Low-Range Current Measurement Calibration
Action
19
Disconnect all loads from the dc source but leave the sense
jumpers in place. Do not connect any equipment to the output
until after step #20.
20.
Press Shift Cal, scroll to CAL CURR MEAS LOW, and press
Enter.
21.
Connect the 800 ohm calibration load resistor as shown in figure
B-1B. Connect the DMM (in current mode) in series with the load.
22.
Press Shift Cal, scroll to CAL LEV, and press Enter to select the
first calibration point.
23.
Press Shift Cal and scroll to CAL DATA. Wait for the DMM
reading to stabilize. Press Enter Number and enter the current
reading displayed on the DMM in amperes.
AC Current Measurement Calibration
Action
24.
Disconnect all loads from the dc source but leave the sense
jumpers in place.
25.
Hold the calibration switch on the back of the unit in the "ON"
position until the ac calibration is complete.
26.
Press Shift Cal and scroll to CAL CURR MEAS AC, and press
Enter.
27.
Wait for the dc source to compute the ac current calibration
constant. The display returns to Meter mode when the calculation
is complete. Release the calibration switch on the back of the unit.
Saving the Calibration Constants
WARNING:
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 dc
source calibration will then remain unchanged.
Action
28.
Press Shift Cal, scroll to CAL SAVE, and press Enter.
29.
Press Shift Cal, select CAL OFF, and press Enter to exit Calibration mode.
*RST and *RCL will also set the calibration state to OFF.
130
Display
CAL:CURR:MEAS:LOW
CAL:LEV P1
CAL:DATA 0.00
Display
CAL:CURR:MEAS AC
Display
CAL:SAVE
CAL OFF
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