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Calibration Manual
18
DC Current Source
To verify the dc current source function.
1. Connect the UUT to the 8508A as shown in Figure 6.
2. Set the 8508A to DC Current.
3. Set the UUT to dc current source (not simulate transmitter) function at 2 mA.
4. See if the value shown on the 8508A is in the range shown in the applicable
column in Table 9.
5. Continue through the test points. See if the value shown on the UUT is in the
range shown in the applicable column.
6. When you complete the test, push on the UUT two times to turn off the
source function. This conserves battery life.
Fluke 75X
Fluke 8508A
gso08.eps
Figure 6. DC Current Source Verification Connections
Table 9. DC Current Source Verification Points
UUT
Range
UUT Output
Minimum
1-Year
Maximum
1-Year
Minimum
2-Year
Maximum
2-Year
22.000 mA 2 mA 1.99680 2.00320 1.99660 2.00340
22.000 mA 4 mA 3.99660 4.00340 3.99620 4.00380
22.000 mA 12 mA 11.99580 12.00420 11.99460 12.00540
22.000 mA 21 mA 20.99490 21.00510 20.99280 21.00720
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