User Manual

Quatech QTM-8524 Manual 29
3.2 Connecting Antennas to QTM-8524 Modules
Your QTM-8524 is issued with a high quality communication antenna. To
get the maximum performance form your wireless system, please follow
the directions and suggestions that follow.
3.2.1 Site Selection
Antenna location is extremely important when installing your system. If
possible, try to keep the antenna away from any obstructions. Objects and
structures made of metal will reduce the efficiency of the antenna. Also,
keep in mind that systems like cellular phone repeaters, other wireless LANs,
and microwave ovens may interfere with the QTM-8524. If you encounter
problems with one frequency, try changing the frequency at which your
QTM-8524 modules are operating. Eight (8) different frequencies can be
selected using jumper 2 on the module
(see Figure 2.4 for a diagram of QTM-
8524 jumper settings.).
3.2.2 Installation
Install the antenna and module as per the directions. See section 3.3.1 for
detailed QTM-24ANT-SW installation instructions and section 3.3.2 for de-
tailed QTM-24ANT-C installation instructions. Be sure to mount the an-
tenna BEFORE connecting it to the QTM-8524 module. The QTM wireless
system should be professionally installed.
3.2.3 Connection
Both antennas are supplied with SMA connectors attached to the antenna
cable. These connectors are designed for optimum use at high frequencies.
To connect the antenna to the module, carefully press the connectors to-
gether and use your fingers to rotate the coupling net clockwise to tighten.
DO NOT over-tighten the connection. A 5/16” open ended wrench can be
used to secure the connection just a little past “finger-tight,” but no more.
Over-tightening the connection may damage the mating surfaces of the con-
nector, and reduce the performance of your wireless system. Use care not to
cross-thread the connector. If you feel resistance when tightening, back the
coupling nut off and try again.
If the connectors need to be cleaned, use a clean cotton swab and a little pure
alcohol. Let the alcohol dry before reconnecting. DO NOT saturate the
connector with any liquid. DO NOT use any lubricants on the connector.
Warning: The FCC strictly prohibits connecting any other
antenna to the QTM-8524. Only Quatech supplied an-
tennas are approved by the FCC for use with this mod-
ule. Use of any other antenna will void your warranty.