User's Manual

March 1, 2002 Page E13
The upconverter is adjusted to provide the downstream signal at the center frequency appropriate
for the ARCi hub transmitter to create the desired RF carrier frequency. See Table D1 in the
Antenna and Frequency Planning section of this manual for more information. The output of the
upconverter is connected with RG-6 cables through a 12 dB tap, and thence through the lightning
protector to the cable to the ARCi hub antenna.
The 12 dB taps provide negligible attenuation to the signal passing through and “copy” of the
signal 12 dB lower in level to the tap port. These are utilized for inserting a spectrum analyzer for
system set-up and maintenance without disturbing the normal connections.
Receive (Upstream) Signal Path
The upstream signal from the ARCi hub antenna is connected through the lightning protector and
through the 12 dB tap to the upstream port of the WMTS.