Fluke 8508A User Manual page 169

Table 6-6. DC Current Calibration Points and Sequence
8508A Range
200 A
2 mA
20 mA
200 mA
2 A
20 A
The procedure assumes the user has knowledge of the actual output value of the
calibrator at the range gain values, from a measurement or from a certificate of
calibration. The
standard where it differs from the nominal range gain point. If the calibrator output is
considered to be exactly nominal, use of the Set feature is not required, also omit steps 2-
4 for the Range Gain Points.
On each range, the 8508A automatically recognizes the appropriate value as range zero or
range gain from the applied signal amplitude and polarity.
Zero Point
1. On the 8508A, select the required range.
2. On the Calibrator, set to zero output and Operate.
3. On the 8508A, press
4. Press
SAMPLE
Calibration is complete when the Busy legend goes out and the calibrated
measurement is displayed.
Point
Zero
Range Gain +ve
Range Gain -ve
Zero
Range Gain +ve
Range Gain -ve
Zero
Range Gain +ve
Range Gain -ve
Zero
Range Gain +ve
Range Gain -ve
Zero
Range Gain +ve
Range Gain -ve
Zero
Range Gain +ve
Range Gain -ve
feature allows a user to enter the true output value of the calibration
Set
to enter the
CAL
to initiate the calibration operation.
Current
0 A
+100 A
-100 A
0 mA
+1 mA
-1 mA
0 mA
+10 mA
-10 mA
0 mA
+100 mA
-100 mA
0 A
+1 A
-1 A
0 A
+10 A
-10 A
menu.
CALIBRATION
Calibration and Verification
Routine Calibration
6
6-25