Ac Current Checks - Fluke 8508A User Manual

8508A
Users Manual
6. On the calibrator select the value required for verification in the negative polarity.
7. Note the 8508A reading. Compare the result with the allowable tolerance, taking into
8508A Range
200 A
2 mA
20 mA
200 mA
2 A
20 A
1. Based on 365 day Tcal 1 C 99 %CL Absolute specifications. See comments in Applicable Verification Tolerance section
above regarding the impact of calibration uncertainties and use of other specifications.

AC Current Checks

Equipment Configuration
1. Ensure that the calibrator output is set to
2. Connect the equipment as described for Routine Calibration.
3. Press the
4. Press the
5. Confirm that the 8508A is configured for internal guard (External Guard is
6-40
account any known error from nominal of the calibrator for this output.
Table 6-11. DC Current Verification Points and Sequence
Current
0 A
+100 A
-100 A
0 mA
+1mA
-1mA
0 mA
+10mA
-10mA
0 mA
+100mA
-100mA
0 A
+1A
-1A
0 A
+10A
-10A
Guard ( is deselected).
EXT GRD
key
ACI
key. Select
CONFIG
deselected) by checking that the
display.
Perform input zero operation to calibrator range locked zero output
0.00190 A
0.00190 A
Perform input zero operation to calibrator range locked zero output
0.0000190 mA
0.0000190 mA
Perform input zero operation to calibrator range locked zero output
0.000200 mA
0.000200 mA
Perform input zero operation to calibrator range locked zero output
0.00530 mA
0.00530 mA
Perform input zero operation to calibrator range locked zero output
0.0002260 A
0.0002260 A
Perform input zero operation to calibrator range locked zero output
0.004950 A
0.004950 A
and configured for Internal
STANDBY
and 100Hz Filter.
RESL6
legend does not appear on the left-hand
Ext Grd
1
Tolerance