GRF-1300 User Manual and Teaching Materials
low-pass filter passband to achieve a phase-locked FM wave.
When the center frequency of the VCO is locked on to a stable
high frequency, it allows the VCO to shift in frequency when the
modulating signal is varied.
Figure 6-2.
GRF-1300 FM
principle
Experiment
contents
1.
Measure the FM wave spectrum.
2.
Observe how the amplitude of the modulating signal affects the
FM wave frequency deviation.
3.
Observe how the frequency of the modulating signal affects the
FM wave frequency deviation.
1.
Turn on the GRF-1300 and GSP-730.
2.
Set the GRF-1300 as follows:
•
Under the default state (the state from power-up), turn the
potentiometer to the minimum position.
•
Connect the output port on the Baseband module to the FM in
port on the RF Synthesizer/FM module with an RF cable.
•
Connect the RF/FM output port to the RF input port on the
spectrum analyzer with an RF cable.
Experiment
steps
3.
Set the GSP-730 as follows:
•
Center frequency:880MHz
•
Span: 50MHz
•
Reference level: 0dBm
•
RBW: Auto
72
Summary of Contents for GRF-1300
Page 15: ...Introduction to the GRF 1300 Figure A 10 Operation interface for HyperTerminal 13 ...
Page 19: ...Overview of the Time and Frequency Domain Time domain Frequency domain 17 ...
Page 20: ...GRF 1300 User Manual and Teaching Materials NOTES 18 ...
Page 21: ...Overview of the Time and Frequency Domain NOTES 19 ...
Page 22: ...GRF 1300 User Manual and Teaching Materials NOTES 20 ...
Page 23: ...Overview of the Time and Frequency Domain NOTES 21 ...
Page 24: ...GRF 1300 User Manual and Teaching Materials 22 NOTES ...
Page 30: ...GRF 1300 User Manual and Teaching Materials NOTES 28 ...
Page 31: ...An Introduction to Spectrum Analyzers NOTES 29 ...
Page 56: ...GRF 1300 User Manual and Teaching Materials NOTES 54 ...
Page 57: ...RF Communication and Signals Experiments NOTES 55 ...
Page 58: ...GRF 1300 User Manual and Teaching Materials NOTES 56 ...
Page 59: ...RF Communication and Signals Experiments NOTES 57 ...
Page 95: ...RF Communication and Signals Experiments 10MHz frequency deviation test results 93 ...
Page 101: ...Test for Learning Outcomes NOTES 99 ...
Page 102: ...GRF 1300 User Manual and Teaching Materials NOTES 100 ...
Page 103: ...Test for Learning Outcomes NOTES 101 ...
Page 104: ...GRF 1300 User Manual and Teaching Materials 102 NOTES ...
Page 109: ...Appendix Modulation Index and Sideband Amplitude Comparison Table 107 ...