Current Sourcing Test - Fluke ProcessMeter 789 Calibration Manual

Current Sourcing Test

1. Put the calibrator in Standby (STBY) mode.
2. Connect the SOURCE + (A) and − (mA) terminals on the UUT to the current
terminals on the multimeter as shown in Figure 3.
3. Put the multimeter in the dc mA mode and manually select the 100 mA range. (Do
not allow the multimeter to autorange.)
4. Turn the UUT rotary switch in the OUTPUT
5. Use the SpanCheck, %STEP and COARSE keys on the UUT to apply the values
shown in Table 4 and compare the readings on the multimeter to the acceptable
readings shown.
789 Range
No Range Switching
No Range Switching
No Range Switching
Figure 3. Current Sourcing Connections Using the HP 3458A
Table 4. Current Sourcing Test
789 Output Current
4.000 mA
12.000 mA
20.000 mA
X position.
Minimum Acceptable
Multimeter Reading
3.990 mA
11.990 mA
19.990 mA
ProcessMeter™
Performance Verification
Maximum Acceptable
Multimeter Reading
4.010 mA
12.010 mA
20.010 mA
adm001F.EPS
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