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diff. b/w AM, FM, PM
bit rate
differential manchester
how to calculate bandwidth
zero frequecy and infinite frequency
diff. b/w asynchronous and synchronous
All conversion (digita-to-digita, digital-to-analog, analog-to-digital, analog-to-analog)
How to calculate FSK Bandwith
EIA 449 , EIA530 , RS422 Balanced mode
null modem
similarity 4QAM and 8 QAM
characteristics of sine wave
Frequency spectrum
DCE and DTE
NRZ
sampling rate
periodic signal
RZ encoding scheme

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