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5.1.4
Output Level Accuracy and Flatness (R3755A/R3755TF)
5-3
5.1.4. Output Level Accuracy and Flatness (R3755A/R3755TF)
Testing procedure
7.
Setup the R3755x as shown in the figure below.
Figure 5-2 Output Level Accuracy and Flatness
Output level accuracy
8.
Perform the ZERO calibration for the power meter.
9.
Set the R3755x as follows.
PI circuit
: ON
Center frequency: 10 MHz
Span
: 0 Hz
Output level
: 0 dBm
10.
Connect the power sensor to the output terminal and perform the measurement.
NOTE: The calibration factor should be set to 10 MHz.
11.
Check the output level accuracy of
±
2.0 dB at 0 dBm and 10 MHz.
Flatness
12.
Perform the ZERO calibration for the power meter.
13.
Set the R3755x as follows.
PI circuit
: ON
Center frequency: 10 MHz
Span
: 0 Hz
Output level
: 0 dBm
14.
Press the
[REL]
key on the power meter and set it to 0 dB (ratio measurement
mode).