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PXIe-5185/5186 Calibration Procedure
Verifying 1 M
Ω
AC Amplitude Accuracy and Bandwidth
Follow this procedure to verify the 1 M
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.
1.
Connect the 50
Ω
BNC feed-through terminator to the channel 0 1 M
Ω
input of the
PXIe-5185/5186. Connect splitter output 2 of the power sensor assembly from the
Test
System Characterization
section to the 50
Ω
BNC feed-through terminator.
Note
The power sensor assembly must match the configuration used in the
Test
System Characterization
section, in which the power sensor is connected to splitter
output 1 and the signal generator is connected to the input port of the power splitter.
Table 7.
1 M
Ω
AC Amplitude Accuracy and Bandwidth Verification
Iteration
Sample Rate
Test Point (dBm)
Test Limit (dB)
1
1.25 GS/s
-12 at 50 kHz
±0.5
2
12.5 GS/s
-12 at 425 MHz
-3 to 1
