PXIe-5185/5186 Calibration Procedure
|
© National Instruments
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17
Verifying 50
Ω
AC Amplitude Accuracy and Bandwidth
Follow this procedure to verify the 50
Ω
AC amplitude accuracy and analog bandwidth of the
PXIe-5185/5186 by generating a sine wave and comparing the amplitude measured by the
PXIe-5185/5186 to the amplitude measured by the power sensor.
Before performing this procedure, complete the
Test System Characterization
procedures and
calculate the
splitter imbalance
of your power splitter.
Table 6.
50
Ω
AC Amplitude Accuracy and Bandwidth Verification
1.
Connect splitter output 2 of the power sensor assembly from the
Test System
Characterization
section to the channel 0, 50
Ω
input of the PXIe-5185/5186.
31
1 M
Ω
1
0.25
0.65
±0.0263
32
1 M
Ω
1
-0.25
-0.65
±0.0263
33
1 M
Ω
2
0
0.8
±0.0353
34
1 M
Ω
2
0
-0.8
±0.0353
35
1 M
Ω
2
2.5
3.3
±0.1153
36
1 M
Ω
2
-2.5
-3.3
±0.1153
37
1 M
Ω
5
0
2
±0.0863
38
1 M
Ω
5
0
-2
±0.0863
39
1 M
Ω
5
2.5
4.5
±0.1663
40
1 M
Ω
5
-2.5
-4.5
±0.1663
41
1 M
Ω
10
0
4
±0.1713
42
1 M
Ω
10
0
-4
±0.1713
43
1 M
Ω
10
2.5
6.5
±0.2513
44
1 M
Ω
10
-2.5
-6.5
±0.2513
Iteration
Sample Rate
Test Point (dBm)
Test Limit (dB)
1
1.25 GS/s
-12 at 50 kHz
±0.35
2
12.5 GS/s
(PXIe-5185)
-12 at 3 GHz
(PXIe-5186)
-12 at 5 GHz
-3 to 1
Table 5.
PXIe-5185/5186 DC and Programmable Vertical Offset Accuracy Limits
Iteration
Input
Impedance
Vertical
Range
(V
pk-pk
)
Programmable
Vertical
Offset (V)
Test
Point (V)
Test Limit
(V)
