Self-Calibrate A Fluke 752A Divider With A Fluke 8508A As The Null Detector - Fluke 5730A Calibration Manual

5730A
Calibration Manual
Product Range
220 mV
2.2 V
11 V
22 V
220 V

Self-Calibrate a Fluke 752A Divider with a Fluke 8508A as the Null Detector

1. Connect the Product, 752A, and 8508A as shown in Figure 9.
2. Set the 8508A to the 200 mV dc voltage range at 7 digits, filter "ON" and
3. Set the 752A MODE switch to CAL and the CALIBRATE switch to 10:1 +.
4. Set the Product to output 0 mV on the 200 mV range and push .
5. Wait for the reading to settle (this can take several minutes) and then zero
6. Set the Product to output 20 V.
7. Wait for the reading to settle (this can take several minutes) and note the
8. If the readings in step 7 are not the same, then adjust the BALANCE control
9. Set the CALIBRATE switch to 10:1+. Adjust the 10:1 CALIBRATE adjustment
10. Set the Product to output 0 mV on the 200 mV range.
11. Set the 752A CALIBRATE switch to 100:1 +.
12. Wait for the reading to settle (this can take several minutes) and then push
13. Set the Product to output 20 V.
14. Wait for the reading to settle (this can take several minutes) and note the
58
Table 8. DC Zero Volt Verification
Product Setting
0 mV
-.010 μV
0 V
-.1 μV
0 V
-1 μV
0 V
-1 μV
0 V
-10 μV
"FAST" and internal guard (external guard not selected). FAST mode updates
the reading every 1.5 seconds. This lets the reading track the adjustments
but the readings change frequently and it is somewhat noisy. FAST can be
turned off so that the readings are updated every 5.3 seconds.
the meter using the Zero Rng button.
reading. Set the CALIBRATE switch to 10:1 – and note the reading.
until they are the same. (see note 4 below)
until the reading is 0 ±0.5 μV.
the Zero Rng button to zero the meter.
reading. Set the CALIBRATE switch to 100:1- and note the reading.
DMM Reading
±0.5 μV
±0.5 μV
±0.8 μV
±0.8 μV
±3 μV
±3 μV
±5 μV
±5 μV
±50 μV
±50 μV
Limits