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