Olson Technology ISX-3040 - Manual (Page 6)

025-370494 REV X3 Page 6
CHANNEL LOADING
The optimum RF drive level for the IX40RPTX is 7.0dBmV per channel with a standard loading of six analog video channels. 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 drive level should be to the transmitter. If loading with data channels only (QPSK, QAM) refer to the amount of
total bandwidth the data channels are consuming. 7.0dBmV per analog video channel is equivalent to -41.18dBmV/Hz. With a
standard 4/1 combiner installed in the node, there is 8dBmV of loss through the node (not counting the PAD loss for each port)
before the return test point at J6. To achieve +7dBmV at the transmitter with a zero PAD in each port, an input level of +15dBmV will
be required.
NOTE: Other configurations exist which may add additional loss to the system, including those equipped with
GLC.