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LIT-SWASS-EXT-3-OP-080625.indd
©
2008
Sabine,
Inc
6
8
NOTE:
wall-mounting
screws not supplied
Mount the metal wall-mount bracket
to the predetermined location on the
wall.
Replace the wood-grain antenna ex
-
terior case.
s
etting
A
ntennA
g
Ain
Instructions for adjusting the gain on Sabine SWASS extension antennas.
Introduction
The Sabine SWASS extension antenna is an active antenna. This means it can amplify the
RF signal it receives before transmitting it to the cable it is attached to. The reason it has this
ability is to make up for the loss in the cable connecting it to the Antenna Distribution Amplifier
(ADA) or SWM receiver. For example, RG8 cable has a loss at 2.4 GHz of approximately
7.4dB per 100 feet. Therefore, the correct gain for the SWASS would be 7.4dB for 100 feet of
RG8. Although it might seem like a good idea to add even more gain in an attempt to extend
the range of the transmitters, don’t do it. It will cause signal clipping in the receiver which will
lead to audible artifacts and reduced, not increased range. This document explains how to
correctly set the gain pot on the SWASS for optimum range and system performance.
Setting the Gain
NOTE: You will need to have one of your receivers connected to a PC running the Sabine
SWM remote software to perform this procedure. Once you have your antennas installed in
their correct positions, follow the procedure below.
1.
Turn on all of the transmitters that you will be using with your system. Make sure they
are all on different channels. Leave one channel open in the middle of the channel line up
for use in the calibration procedure that follows. For example, if you are using channels 1 –
20, skip channel 10. IE, no transmitter on channel 10.
LIT-SWASS-EXT-3-OP-092508.indd
2009
The Power LED indicates the presence of phantom power from either the
SWA6SS distribution amp or an SWM7000 / SWM6000 series receiver.
Use this LED to verify a good connection from either of these. If the LED
does not light after you power up the receiver or distribution amp, then you
have a bad connection in your RF cabling.
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