Olson Technology LCP-500-550 - Manual (Page 4)

025-000235 REV C Page 4
C) AFC Selection: Most off-air TV stations are usually very close to the specified carrier frequency
such that the AFC function need not be used. However, if AFC is desired, then utilize position 8 on
DIP Switch #2. Refer to Figure #2.
FIGURE 2 - Input Channel Select Chart
D) Input Connection: After an input channel and the band select have been determined and the DIP
switches placed in the correct position, connect an antenna or cable source to the appropriate RF
input connector. For optimum video quality the input signal level should be a minimum of
+10dBmV. This unit will function with input signal levels as low as -20dBmV, but any signals below
-20dBmV will be squelched by the internal squelch circuit.
3) AGC ADJUSTMENT
A) The delayed AGC adjustment is factory set for a +5 to +10dBmV threshold. This setting provides
for the best signal-to-noise ratio for low level off-air signals.
B) For cable operation, where high-level adjacent channel signals may be present, adjacent channel
performance may be improved by lowering the AGC threshold level.