5
SENSOR RANGE TEST MODE:
Range Test Mode:
Sensor Range Test Mode is used to verify the maximum RF transmission distance from
the IR-903 Sensor to the Receiver/Processor. The IR-903 Sensor range test may be
monitored by several methods. One method is to simply program the frequency (916.5
MHz, AM mode) of the IR-903 Sensor into a scanner. Another method would be to use
another Intellicam device with a Receiver/Processor such as the WTM-3A Walk Test
Module. The WTM-3A is an optional device and must be purchased separately, but has
the advantage of mobility and small size. The other option is to use any Intellicam
receiver, the unit can either be carried while range testing or can be placed near the target
area on the ground, in which case the operator can observe the
RED LED
on the
processor module. There is nothing the operator has to do to the Receiver/Processor
except apply power from the battery pack.
Screw the TC-1 Sensor Tree Clip into the tree, about 3 to 4 feet above the ground level
and install the sensor. It is best to locate the Receiver on the same side of the tree as the
Sensor so that the tree will not block the RF signal. The best range is achieved with line-
of-sight conditions, that is, with no obstructions coming between the Sensor and
Receiver/Processor. Position the IR-903 Sensor in the tree mount with the antenna
vertical. Aim the Sensor at the target area. To activate the IR-903, remove the plastic
insulator from the batteries. As soon as power is applied, the
BLUE LED
should come on
and go off. After about a 30 second stabilization period, the Sensor will automatically go
into the Range Test mode.
Trip the Sensor by slowly waving your hand in front of the lens. When the Sensor trips, it
will start transmitting at 1 second intervals and with the Sensor
BLUE LED
flashing. Walk
away from the Sensor with the Receiver/Processor in your hand. The maximum range will
be found when the
RED LED
on the Receiver/Processor stops flashing or becomes erratic.
You should cut this distance in half for a more reliable setup, since RF/UHF frequencies
cannot be predicted with any great certainty due to absorption and reflections from nearby
objects. The Range Test should involve hanging the Receiver/Processor antenna in a
suitable bush or tree, and standing back from it. If the
RED LED
flashes on the
Receiver/Processor become erratic then you know that you are exceeding the maximum
RF transmission distance. Generally, if distances are kept below 100 feet, there should be
little problem with the setup. Factors that degrade the RF performance will be thick
vegetation, buildings, or metal objects. For longer range applications, repeaters are
available that will send the alarm signal up to several miles if so desired.
Range Test can be repeated if desired by pressing and holding the sensor
PROGRAMMING BUTTON
until the
BLUE LED
comes on. After the
BLUE
LED
comes
on, immediately release the
PROGRAMMING BUTTON
. Wait for several seconds and trip
the Sensor with your hand. When the Sensor trips, it will start transmitting at one second
intervals with the Sensor
BLUE LED
flashing. Range Test will normally last for
approximately 1 to 2 minutes. Range Test can be aborted at any time by momentarily
pushing the
PROGRAMMING BUTTON.
The Sensor will then go into the active Alarm
Mode.
