16. Connect splitter output 2 of the power sensor assembly to channel 1 of the PXIe-5164 and
repeat steps 2 through 14 for each configuration listed in the
Flatness and Bandwidth Verification
table.
17. Disable the signal generator output.
Verifying 1 M
Ω
Passband Amplitude Flatness and
Bandwidth
Follow this procedure to verify the 1 MΩ analog passband amplitude flatness and bandwidth
accuracy of the PXIe-5164 by generating a sine wave and comparing the amplitude measured
by the PXIe-5164 to the amplitude measured by the power sensor.
Before performing this procedure, complete the
calculate the
splitter balance
and
splitter loss
of your power splitter.
Table 6. 1 M
Ω
Passband Amplitude Flatness and Bandwidth Verification
Config
Sample
Rate
(S/s)
Vertical
Range
(V
pk-pk
)
Test Point
As-
Found
Limits
(dB)
As-Left
Limits
(dB)
Measurement
Uncertainty
(dB)
4
Frequency
(MHz)
Amplitude
(dBm)
1
125 M
0.25 V
0.05
-11
—
—
—
2
1 G
0.25 V
1.1
-11
±0.7
±0.57
±0.109
3
1 G
0.25 V
6.1
-11
±0.7
±0.57
±0.109
4
1 G
0.25 V
10.1
-11
±0.7
±0.57
±0.109
5
1 G
0.25 V
30.1
-11
±0.7
±0.57
±0.109
6
1 G
0.25 V
45.1
-11
±0.7
±0.55
±0.110
7
1 G
0.25 V
60.1
-11
±0.7
±0.53
±0.110
8
1 G
0.25 V
75.1
-11
±0.7
±0.51
±0.113
9
1 G
0.25 V
90.1
-11
±0.7
±0.5
±0.111
10
1 G
0.25 V
100.1
-11
±0.7
±0.48
±0.118
11
1 G
0.25 V
120.1
-11
±0.7
±0.43
±0.148
12
1 G
0.25 V
150.1
-11
±0.7
±0.42
±0.130
13
1 G
0.25 V
170.1
-11
±0.7
±0.41
±0.129
4
Measurement uncertainty is based on the following equipment and conditions:
•
Rohde & Schwarz NRP-Z91 at 20 °C to 25 °C.
•
Harmonics from the signal generator are less than -30 dBc.
30
|
ni.com
|
PXIe-5164 Calibration Procedure
