Hi All: I am trying to set a proper pair of tx amplitude and rx gain, but found something confused.
In transmit_path.py ( ..-> packet_transmitter -> Multiply Const -> USRP Sink), I see that the range of Multiply Const is [0, 1). However, in one of the GRC example usrp_tx_dpsk.grc (Random Source -> DPSK2 Mod -> Multiply Const -> USRP Sink), Multiply_Const = tx_ampl*p2p/2 , where p2p = 2^15. Does anyone know why the Multiply_Const is set to tx_ampl*p2p/2 and what does p2p refer to? Also, why the amplifier value are so different in these two examples? Which one should I use? Many thanks! Rachel
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