Fluke 52120A User Manual page 78

52120A
Users Manual
10. Set the DMM '-c' and '÷z' stores to 0.8.
11. Turn on the '*m', '-c' and '÷z', and % math functions on the DMM.
12. Set the 5720A output to the values in Table 5-3 for the +2 and -2 volt verification
13. Set the DMM '-c' and '÷z' stores to -0.8 for the -2 volt measurement. Let each
14. Set the 5720A output to the values in Table 5-3 for all the ac voltage verification
1 V dc
-1 V dc
2 V dc
5-8
points.
measurement become stable for a minimum of one minute and then record the
measured error.
points and record the measured error. Use the transfer method for all ac
measurements.
For each ac measurement in Table 5-3:
•
Set the 5720A output voltage and frequency to the reference level shown in
Table 5-3.
•
Let the measurement become stable for a minimum of one minute and then
record the measured error in Table 5-3.
•
Push M on the Product.
For currents larger than 50 % of Product range, let the shunt become
stable for a minimum of five minutes.
•
Set the DMM to rear input.
•
Turn off the '*m', '-c' and '÷z', and % math functions on the DMM.
•
Let the measurement become stable for a minimum of one minute. Longer when
the 10 Hz and 40 Hz filter is on.
•
Use Last Reading and Enter to store the last measurement in the '÷z' and '-c'
stores of the DMM.
•
Turn on the '-c' and '÷z' math functions on the DMM.
The DMM measurement must be 0.000000 V plus a few digits of noise.
•
Turn on the '*m' and '%' math functions to apply the correction factor and show
the measurement in percent.
•
Set the 5720A to the values in the row below the reference level row.
•
Set the DMM to front input.
•
Let the measurement become stable and then write in the measured error in
Table 5-3.
Table 5-3. 2 Amp Range Verification
8508A
5720A 8508A
ACV
Output Input
filter
- Front
- Front
- Front
Note
Note
Product
Measured
A40B Specification
Error (%)
±0.0200 %
2 A
±0.0200 %
2 A
±0.0150 %
2 A
Measurement
uncertainty
(99 %) (99 %)
±0.0036 %
±0.0036 %
±0.0030 %
TUR
5.6:1
5.6:1
5.0:1