Calculate ACV
Measurement
Uncertainty
From Section 6 - Specifications of the Datron 4708 User’s Handbook , AC
Voltage (Option 20) Accuracy (90 days since calibration and 23
o
C
±
1
o
C)
where Datron Accuracy =
±
(ppm ppm FS).
Datron
Output
(ACV)
Datron
Range
Datron
Freq
Datron
Accuracy
(ppm)
Calibration
Uncertainty
(ppm)
0.07
0.07
0.07
0.07
300.0
100 mV
100 mV
100 mV
100 mV
1000 V
20 Hz
60 Hz
5 kHz
10 kHz
5 kHz
110 + 20 + 5
µ
V
60 + 20 + 5
µ
V
50 + 20 + 5
µ
V
50 + 20 + 5
µ
V
90 + 10
30 + 1
µ
V
30 + 1
µ
V
30 + 1
µ
V
30 + 1
µ
V
30
Example: Calculate AC Voltage Measurement Uncertainty
Since Measurement Uncertainty = Datron Ac Calibration
Uncertainty, for a 0.07 ACV OUTPUT to the multimeter and the Datron
4708 range set to 100 mV at 60 Hz, Measurement Uncertainty
(
µ
V)=
±
[(60.0 x 0.07) + (2 x 20 x .1) + 5 + (30 x .07 +1)] =
±
16.3
µ
V =
±
0.000016 V.
Or, for a 300 ACV OUTPUT to the multimeter and the Datron 4708 range
set to 1000 V at 5 kHz, Measurement Uncertainty (
µ
V)
=
±
[(90.0 x 300.0) + (10 x 1100) + (30 x 300)] =
±
47000
µ
V =
±
0.047 V.
Calculate
Resistance
Measurement
Uncertainty
From Section 6 - Specifications of the Datron 4708 User’s Handbook,
4-Wire Resistance (Option 30) Accuracy (90 days since calibration and
23
o
C
±
1
o
C) follows, where Datron Accuracy =
±
(ppm ppm
FS).
Datron
Output
Datron
Range
(Ohms)
Datron
Accuracy
(ppm)
Calibration
Uncertainty
(ppm)
1 k
Ω
100 k
Ω
1 M
Ω
1.0000000k
100.00000k
1.0000000M
3
3
10
5
6
12
Example: Calculate 4-Wire Ohms Measurement Uncertainty
For the 100 k
Ω
range, measurement uncertainty = [(3 x 10
-6
x 10
5
)
+ (6 x 10
-6 x
10
5
)]
Ω
= (0.3 + 0.6)
Ω
= 0.900
Ω
.
Appendix A
Calculating Multimeter Accuracy 69
Содержание E1411A
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Страница 36: ...Notes 36 Verification Tests Chapter 4 ...
Страница 48: ...Notes 48 Adjustments Chapter 5 ...
Страница 51: ...Figure 6 1 HP E1411A Replaceable Parts Chapter 6 Replaceable Parts 51 ...
Страница 53: ...Figure 6 2 HP E1411B Replaceable Parts Chapter 6 Replaceable Parts 53 ...
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