Table 4. AC Amplitude Accuracy Verification (Continued)
Config
Input
Impedance
(
Ω)
Vertical
Range
(V
pk-pk
)
Test
Point
(V
pk-pk
)
DMM
Range
(Vrms)
As-
Found
Limits
(dB)
As-Left
Limits
(dB)
Measurement
Uncertainty
(dB)
2
4
50
2.5 V
1.25
0.5
0.2
0.16
±0.012
5
50
5 V
2.5
5.0
0.2
0.16
±0.012
6
1 M
0.25 V
0.125
0.05
0.2
0.126
±0.013
7
1 M
0.5 V
0.25
0.5
0.2
0.13
±0.012
8
1 M
1 V
0.5
0.5
0.2
0.13
±0.013
9
1 M
2.5 V
1.25
0.5
0.2
0.13
±0.012
10
1 M
5 V
2.5
5.0
0.2
0.13
±0.012
11
1 M
10 V
5
5.0
0.2
0.13
±0.013
12
1 M
25 V
12.5
5.0
0.2
0.1
±0.013
13
1 M
50 V
20
50.0
0.2
0.1
±0.048
14
1 M
100 V
20
50.0
0.2
0.1
±0.048
2
Measurement Uncertainty
is based on the following equipment and conditions:
•
NI PXI-4071 specifications apply after self-calibration is performed and in an ambient
temperature of 23 °C ± 5 °C.
•
The cable from the BNC Tee to the DMM must be 1 meter or less.
•
Pasternack BNC Tee PE9174.
20
|
ni.com
|
PXIe-5164 Calibration Procedure
