Installation Instructions

56025001 Page © 2003 Telular Corporation
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If moving the Telguard to a different location is not practical, then you may need a longer
cable on the remote antenna in order to receive adequate radio signal strength. Pick a high,
visually secure spot, using the guidelines below.
5.1.3.1 Tips for Improved Radio Signal Reception
• The higher the antenna the better. So, start in the drop ceiling above the unit
and proceed up from there, to the roof if necessary.
• Remember, the antenna should be as inconspicuous as possible for greatest
visual security.
• Try to keep the antenna away from sources of RF interference, including
pumps, compressors, ovens, etc., or where metal objects can shield it or
otherwise block the cellular radio RF signal.
• Place the antenna perpendicular to the ground, either right side up or upside
down. Do not mount the antenna horizontally.
5.1.4 Measure Received Signal Strength (RSSI) for Best Antenna
Placement
Measure the received signal strength by putting jumper J10 "IN". This switches the
LEDs to signal strength mode. Now, slowly move the unit or remote antenna to achieve
maximum signal strength. Pick the place where the most LEDs (up to four) are lighted.
LED Function Table – View RSSI Mode
RSSI Value LED’s Lighted RF dBm
NO SVC LED 1* = on, 2-4 = off
≤ -116 dBm
0 LED 1 = on, 2-4 = off
≤ -111 dBm
1 LED 1 = on, 2 = slow flash
LED 3-4 = off
≥ -110 dBm
2 LED 1-2 = on, LED 3-4 = off
≥ -100 dBm
3 LED 1-2 =ON, 3 =SLOW FLASH
LED 4 = off
≥ -90 dBm
(Minimum signal
strength required)
4 LED 1-3 = on, LED 4 = off
≥ -80 dBm
5 LED 1-3 = on , 4 = slow flash
≥ -70 dBm
6 LED 1-4 = on
≥ -60 dBm
*Note: LED 1 = Radio TX; LED 2 = Mode; LED 3 = STC; LED 4 = AC Power.
NOTE: If you can not obtain a signal strength reading of TWO LEDS ON SOLID
AND THE THIRD LED ON SLOW FLASH, you will probably need to move the unit
and/or remote antenna higher, or switch to a special antenna, as described below.
5.1.4.1 Antenna Options
Antenna problems are unlikely unless the premises are located in a fringe network
coverage area, in a building below ground level, or in a metal structure. However,
here are your options:
Magnetic Mount 3-dB gain Antenna with 12ft. Cable:
The 3dB magnetic
mount antenna comes with 12 feet of cable (Telular model no: MMA-3).
Magnetic Mount 3-dB gain Antenna with 35ft. or 50ft. Cable:
The 3dB
magnetic mount antenna comes with 35 or 50 feet of cable (Telular P/N: MMA-35
or MMA-50).