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A.3.2.1 Tx Waveform Check
Step
1
Use a spectrum analyzer to check the Tx modulated waveform.
2
Figure A-4 shows proper waveform output of the Tx RF path for block up converters, splitters, or
high-powered amplifiers.
Appendix A
a.
The top of the waveform should not be distorted or have any slope in the operating
frequency band. Any distortion after the modem can be caused by overdriven system
components or impedance mismatching in coupling equipment.
b.
BPSK will have a slight notch at the center frequency of the carrier.
Figure A-4. Tx Waveform
SLM-5650C / SLM-5650C-ODU Satellite Modem
Task
A–6
Revision 1
MN-SLM-5650C
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