Applications
2.3
FREQUENCY PROGRAMMING CAPABILITY
The 9508D can be set for operation in the range of 20 KHz to 500 KHz without component changes.
The transceiver can be set to any transmit or receive frequency from 20 to 500 KHz in steps of 125
Hz. The signaling frequencies are selectable between 2325 Hz (2.5 KHz operation) and 3825 Hz (4.0
and 8.0 KHz operation)
The analog filters are fully adjustable in this range in 2 KHz steps. As their bandwidths are
significantly wider than the channel bandwidth, they do not need finer adjustment.
2.4
SUPERPOSED /SEPARATED CHANNEL OPERATION
The 9508D can be arranged for separated band operation or superposed bands possible due to the ECO
canceller feature, decreasing this way the bandwidth requirements by half.
The 9508 can be used in parallel operation with other PLC terminals. In this application, the transmit
filter unloads the line outside of band to limit the effect on other terminals. As there is some loading
effect, RFL does not recommend paralleling units closer than 12 KHz (band edge to band edge)
without using combiners.
RFL 9508D UCC
RFL Electronics Inc.
July 1, 2007
2-8
(973) 334-3100