GW Instek GRF-1300A - Manual (Page 87)

RF Communication and Signals Experiments
Set the bandwidth of the main channel to 2MHz.
Step3
F2
Set the main channel space to 5MHz.
Step4
F3 F1
Set the bandwidth of the 1 st adjacent channel 0.8MHz.
Step5
F2
Set the offset of the 1 st adjacent channel to 2MHz.
Step6
F3
Set the bandwidth of the 2 nd adjacent channel to
0.5MHz.
Step7
Set the offset of the 2 nd adjacent channel to 4MHz.
Increase the frequency deviation to 2MHz (4MHz in total)
using the amplitude knob. Measure the ACPR again and
record the results to table 7-1.
OCBW
measurement Step1 Meas
F3
Step2
F1
Set the bandwidth of the channel that you will measure
to 2MHz.
Step3
F2
Set the span of the main channel space to 10MHz.
Step4 The OCBW is default at 90%.
Record the measurement data in Table 7-2
Step5 Adjust the frequency deviation of FM wave by
adjusting the potentiometer of GRF-1300A. Measure the
OCBW again and record the results to table 7-2.
Record the measurement data in Table 7-2
Experiment
results 1. ACPR measurement results
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