HP 6633B - Manual (Page 61)

Verification and Calibration - B
61
Current Programming and High-Range Measurement Calibration
Action Display
13. Connect the appropriate current monitor as shown in figure B-1A.
Connect the DMM (in dc mode) across the current shunt.
14. Press Shift Cal , scroll to CAL CURR, and press Enter . CAL:CURR
15. Press Shift Cal , scroll to CAL LEV, and press Enter to select the
first calibration point.
CAL:LEV P1
16. Press Shift Cal and scroll to CAL DATA. Wait for the DMM reading
to stabilize. Then read the DMM and compute the first current value
(DMM reading
÷
shunt resistance). Use the Entry keypad to enter the
first current value.
CAL:DATA 0.00
17. Press Shift Cal , scroll to CAL LEV, use
Ì to scroll to P2 (the
second calibration point), and press Enter .
CAL:LEV P2
18. Press Shift Cal and scroll to CAL DATA. Wait for the DMM reading
to stabilize. Then read the DMM and compute the second current
value (DMM reading
÷
shunt resistance). Use the Entry keypad to
enter the second current value.
CAL:DATA 0.00
Negative Current Programming Calibration
Action Display
19. Connect a negative supply to the output in series with the appropriate
load resistor as shown in figure B-1C. Set the DMM to operate in
current mode. Set the negative supply to the full scale voltage rating
of the UUT.
20. Press Shift Cal , scroll to CAL CURR NEG, and press Enter . CAL:CURR:NEG
21. Wait for the dc source to compute the negative current calibration
constant. The display returns to Meter mode when the calculation is
complete.
Low-Range Current Measurement Calibration
Action Display
22. Press Shift Cal , scroll to CAL CURR MEAS LOW, and press Enter . CAL:CURR:MEAS:LOW
23. Connect the UUT as shown in figure B-1B with the appropriate load
resistor for your model. Set the DMM to operate in current mode.
24. Press Shift Cal , scroll to CAL LEV, and press Enter to select the
first calibration point.
CAL:LEV P1
25. Press Shift Cal and scroll to CAL DATA. Wait for the DMM reading
to stabilize. Then use the Entry keypad and enter the current reading
displayed on the DMM.
CAL:DATA 0.00