52120A
Users Manual
0.6 V dc
-0.6 V dc
1 V dc
-1 V dc
0.56 V, 10 Hz
0.7 V, 10 Hz
0.8 V, 57 Hz
1 V, 57 Hz
0.8 V, 300 Hz
1 V, 300 Hz
0.8 V, 1 kHz
1 V, 1 kHz
5-12
•
Set the 5720A output voltage and frequency to the reference level shown in
Table 5-5.
•
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 5-5.
Table 5-5. 120 Amp Range Verification Points
8508A
5720A
8508A
ACV
Output
Input
filter
-
Front
-
Front
-
Front
-
Front
10
Rear
10
Front
40
Rear
40
Front
100
Rear
100
Front
100
Rear
100
Front
Note
Note
Product
Measured
A40B
Specification
Error (%)
±0.0200 %
100 A
±0.0200 %
100 A
±0.0160 %
100 A
±0.0160 %
100 A
100 A
-
±0.0493 %
100 A
100 A
-
±0.0390 %
100 A
100 A
-
±0.0660 %
100 A
100 A
-
±0.2200 %
100 A
Measurement
uncertainty
(99 %)
(99 %)
±0.0082 %
±0.0082 %
±0.0047 %
±0.0047 %
Reference level
±0.120 %
Reference level
±0.0085 %
Reference level
±0.0085 %
Reference level
±0.0085 %
TUR
2.4:1
2.4:1
3.4:1
3.4:1
4.1:1
4.6:1
7.8:1
>25:1