8250A Optical Power Meter Operation Manual
7.6.2 Current Measurement Calibration
7-9
Perform the zero calibration in all ranges.
3. Set a range.
20 nA: XR4
200 nA: XR5
2
A:
XR6
20
A: XR7
200
A: XR8
2 mA: XR9
20 mA: XR10
50 mA: XR11
4. Open the input.(0 A)
5. Perform the zero calibration.
ZERO calibration: XPC0
6. If an error occurs, initialize the range and perform the calibration again.
7. Perform the zero calibration in all ranges in the order of steps 1 to 3 shown above.
Perform the full-scale calibration in all ranges.
8. Set a range.
9. Connect the VIG to this instrument and output the current of the calibration point
value from the VIG according to Table 7-2.
10. Input the current, which is generated in the VIG (the current value is traced to the
national standards), to this instrument and perform the calibration.
Calibration data entry: XPCfull (Substitute “full” by current value.)
11. If an error occurs, initialize the range and perform the calibration flow again from
the zero calibration.
12. Perform the full-scale calibration in all ranges in the order of steps 8 to 11 shown
above.
13. When the zero and full-scale calibrations are complete in all ranges, acquire the
zero and full-scale calibration data and ensure that the data is correct.
14. If an abnormality occurs, initialize the abnormal range and perform the zero and
full-scale calibrations.