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ANTENNA MOUNTING
Selecting A Location
If Non UL installation, an antenna location which has reliable communications with at least one
base station with an uplink signal strength reading of "3" or greater may be used .
NOTE: Place a check mark [ ] in the "Single Site Supervision" box on the Subscriber
Contract.
For UL Grade "A" or Grade "B" installations, find an antenna location which has reliable
communication to at least two AlarmNet Base Stations with a minimum uplink signal strength
reading of "3".
After determining the type of installation required (UL, Non UL) find an antenna location
within the premises. Locations can be found by utilizing the test mode of the 7720PLUS (see
TESTING THE 7720PLUS section), the 7715 FAST Tool or the 7920 series transceiver.
Notes On Antenna
Mounting
1. Optimum RF performance can usually be found at the highest
point within a building, with the fewest number of walls
between the radio and the outside of the premises.
2. Avoid mounting the antenna near other electronic devices. The following
table provides minimum distances. Highest RF energy is in the direct,
horizontal line of the antenna. Therefore, vertical separation (moving
electronic devices either higher or lower on wall) provides a higher level of
isolation from the radio.
Equipment
Short range receiver
PIR
Control panel
FM radio or TV ant.
other devices
The diagram below displays the 7720PLUS mounting options and the
appropriate antenna hardware to be used in each of these situations.
Distance
20 ft.
10 ft.
25 ft.
25 ft.
10 ft. minimum
– 25 –
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