User's Manual
56034903 © 2008 Telular Corporation
8
5.1.3 Connect Backup Battery and AC Power Transformer
To apply power to Telguard, attach battery leads to battery terminals noting polarity.
Connect the Telguard AC power transformer to AC terminals using stranded copper insulated wire
following wire gauge and length recommendations below.
Recommended Wire Size
Length Not to Exceed
18 ga 20 ft
16 ga 40 ft
14 ga (Max) 60 ft
.
5.1.4 Connect Antenna and Temporarily Place Unit
The Telguard is supplied with an antenna. In most cases the antenna may be mounted directly to the
Telguard. If a stronger radio signal is required, the antenna must be moved to a better signal location
using a Telular antenna cable and bracket accessory (sold separately). The characteristics of the
Telguard antenna can be altered depending upon the wall material and materials contained within the
wall chosen for mounting. These effects may not be clearly identified by RSSI monitoring alone. The
wall materials may have a more profound affect on the antenna’s transmit band performance.
When selecting a mounting location, do not mount this unit in an area where the general public could
reasonably be within 20cm (8 inches) of the antenna. The supplied dipole antenna is for INDOOR
USE ONLY.
Note 1: Optimum RF performance can usually be found at the highest point within a building with the
fewest number of walls between the Telguard’s antenna and the outside of the premises.
Note 2: To avoid interference with other electronic devices operating in the area, avoid mounting the
Telguard’s antenna near other electronic devices.
Note 3: The Telguard Digital TG-7 unit with supplied dipole antenna is designed for indoor installations
ONLY
. The supplied dipole antenna is for indoor use only.
These considerations should be coupled with the best RSSI indication obtainable (see section 2.7.1).
Care should be taken to insure that a large metal object such as a refrigerator or a metal cabinet is
not located on the opposite side of the wall.
If moving the Telguard to a different location is not practical, then you may need a cable and remote the
antenna in order to receive adequate radio signal strength. Pick a high, visually secure spot using the
guidelines below.
5.1.4.1 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.
5.1.5 Measure Received Signal Strength for Best Antenna Placement
Measure the received signal strength (RSSI) by putting jumper J10 "SHORTED". 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.