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DC Adjustment Procedure (cont’d)
Test Procedure
(cont’d)
5. Trigger the DMM and note the reading.
6. Send the reading to the AFG:
CAL:DC:POINT? <reading>
where <reading> is the DMM reading from step 5. The AFG will
return, in order, the number of the current cal point and an error code.
Any non-zero error code indicates a failure.
Table 3-1. DMM Range Setting for Cal Points 41 and 43
Absolute Value
of DC Offset DMM Range
Less than 10 mV
100 Ω
Between 10 mV and 100 mV
1000 Ω
Greater than 100 mV Offset too high - abort cal
Table 3-2. DC Calibration Points
Cal
Point
DMM Settings
(changes only)
1
29
31
33
41
43
DCV, 10 V range, 10 NPLC
1 V range, 20 NPLC
10 V*
100 mV range
4-wire ohms, offset comp on*
4-wire ohms, offset comp on*
*See Step 4 of the "DC Adjustment Procedure" for
special instructions.
Agilent E1445A Service Manual Adjustments 89