Direct Current Verification Test - Fluke 5730A Calibration Manual

5730A
Calibration Manual

Direct Current Verification Test

These tests check the Direct Current function by passing the current through a
shunt and measuring the voltage drop with a DMM. Use Table 12 for the test
record. Table 11 lists the required equipment.
DC DMM, 7 digits
High-Current Shunt
Resistance Standards
Low Thermal EMF Cables
1. Connect the DMM and the Product to the shunt given in Table 12, as shown
2. Enter the resistance of the shunt into the Table 12 Shunt Value column.
3. Set the DMM to DC Voltage and the range shown in Table 12. Set the DMM
4. With the Product in standby wait for the reading to settle and push the Zero
5. Set the Product to the current level on the range given in Table 12. The
6. If the current in Table 12 is zero on a range above the 220 μA range first set
7. Push .
8. Wait for the reading on the DMM to settle and record the reading in the
9. Set the Product to standby.
10. Calculate the current with the equation shown in Table 12 and compare the
68
Table 11. Required Equipment for Direct Current Test
Equipment
in Figure 13. When testing a 5725A, connect to the 5725A current output
terminals instead of the Product output.
to 7 digits, filter ON, "Slow" and internal guard.
Rng button to zero the DMM.
Current Output is set to "NORMAL".
the Product to a current near full scale on the given range and then lock the
range before setting the Product to zero current.
Table 12 DMM Voltage Reading column.
results to the Limits given. Repeat steps 1 through 9 for all the tests in
Table 12.
Model
Fluke 8508A
Guildline 9230A-30 0.1 Ω
Guildline 9230A100 0.01 Ω (5725A only)
Fluke 742A-1
Fluke 742A-10
Fluke 742A-100
Fluke 742A-1k
Fluke 742A-10k
Fluke 5730A-7003