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3.4.2 Relocating the Antenna
Before permanently mounting the control panel with the GSM 1000 module in its final location, verify that
it is working as it should by following these steps:
Step 1: Make all connections between the GSM 1000 and the control panel.
Step 2: Power up the control panel.
Step 3: Check number of flashes on status LED on the GSM 1000 module. If the LED flashes only once every
10 seconds then the antenna is in an acceptable location.
If a suitable location is not available with the antenna attached directly to the GSM 1000 module, obtain an
Antenna Extension Bracket kit from your DSC / Sur-Gard supplier. Each kit contains an extension cable, a
mounting bracket, instructions, and all required mounting hardware. Three lengths of extension cable are
available:
Extension Kit
Length of Cable
LAE-1
1 m
LAE-5
5 m
LAE-8
8 m
Use only the Extension Kits to extend the mounting range of the antenna. Do not cut or splice the
extension cable.
The maximum distance between the GSM 1000 and the antenna is 8 meters as obtained
by using the LAE-8 Extension Kit. Make sure the antenna is in a physically secured location to avoid
tampering.
Secure the TNC connector from the Extension Kit to the mounting bracket, ensuring that the star washers
make solid electrical contact with the mounting bracket.
Remove the antenna from the GSM 1000 metal bracket and connect the extension cable to the TNC
connector on the bracket/cabinet. Secure the antenna to the TNC connector mounted on the Extension Kit
Mounting Bracket.
Locate the mounting bracket and antenna away from possible sources of electrical interference. Moving
the antenna just a short distance will likely be adequate. Temporarily secure the mounting bracket in the
new location and repeat steps 1 - 3 above. If the test gives a good result, perform a test transmission as
described in the “Testing the System” section of this manual.
If the test is successful and the cellular transmission is completed without a Loss of Cellular Communication
trouble, permanently secure the mounting bracket and antenna at the new location.
If the cellular transmission is not completed successfully or there is a trouble indication, relocate the
mounting bracket and test the GSM 1000 again.
Note:
Do not secure the mounting bracket in a way that would stretch or strain the extension cable. Rather
than try to strain the cable to reach a desired location, use a longer cable. When installation is complete,
secure the extension cable so that it does not dangle or hang loose from the cabinet or mounting bracket.
