Olson Technology 6920-RT-x - Manual (Page 7)

025-370516 REV X2 Page 7
CHANNEL LOADING
The optimum RF input level for the 6920-RT-x is 27.5dBmV per channel if equiped with an DFB laser and with a
standard loading of six CW channels. Or 20dBmV per channel if equipped with an FP laser. The chart below shows
the change in RF input level according to the amount and type of channel loading. The chart shows on the right what
the RF input level is according to the -20dB test point. On the left, the RF input in dBmV is shown for FP and DFB
type lasers. If loading with data channels only (QPSK, QAM) refer to the amount of total bandwidth the data
channels are consuming. 27.5dBmV per CW channel is equivalent to -41.18dBmV/Hz, while 20dBmV per channel
is equal to -55.68dBmV/Hz.