Grf-1300a user manual and teaching materials – GW Instek GRF-1300A User Manual
Page 36
GRF-1300A User Manual and Teaching Materials
Step3
F1
3
0
Step4
BW
F1
3.
Now we should see some signals on the spectrum analyzer
screen. Identify the three highest peaks and write down their
frequency values. The reference level can be used to adjust the
strength of the signal.
4.
As mobile phones use frequency hopping, we can use the
Peak Hold function to hold the reading of the signal on the
display screen. Record the frequency and amplitude of the
signal.
Step5
F3
5.
Change the span to 5MHz. Set the center frequency to each of
the above three frequency points in sequence so that you can
observe each one more accurately. Record these three
frequency points in Table 1-1.
Step6
F2
Set the center frequencies to each of the three frequency
points
Step7
6.
Testing the wireless signals in the environment is shown in
the picture below.
Experiment
results
Antenna
34