5730A
Calibration Manual
62
DC Voltage Test at Decade Values
1. Self-Calibrate the reference divider according to the procedure for using the
8508A as the null detector in the “Self-Calibrate a Fluke 752A Divider with a
Fluke 8508A as the Null Detector” section above.
2. Connect the reference divider and the 8508A as shown in Figure 10. The
short on the INPUT and REFERENCE STANDARD inputs of the reference
divider must be a low thermal EMF connection. A piece of copper wire is
recommended for this.
3. Set the reference divider to 0.1 V and the mode switch to OPERATE.
4. Set the 8508A to dc V, 200 mV range, 7 digits, filter IN and "FAST" mode. Be
sure the 8508A is on internal guard (external guard not selected).
5. Wait for the reading to settle and then push the Zero Rng button to zero the
meter.
6. Remove the two shorts from the reference divider and connect the 732B 10 V
Reference Standard and the Product as shown in Figure 11.
7. Enter the Reference Standard Voltage (Vstd) into Table 9.
8. Set the Product to the first test voltage listed in Table 9, the reference divider
to the setting given and the reference standard polarity given. To change the
polarity of the reference standard, reverse the leads to the HI and LO output.
9. Push .
10. Wait for the reading to settle, a least 1 minute, and record the reading in
Table 9.
11. Calculate the Product measured voltage using the equation shown in Table 9
and ensure it is within the given limits.
12. Repeat steps 8 to 11 for the rest of the voltages given in Table 9. See the
note in the DC Zero Test section about locking the range.
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