496350 Issue 1 7 of 8
PIR Pattern Adjustment
1. Remove the cover and fit link across Test jumper pins (Figure 5).
2. Fit link across PIR jumper pins.
3. Apply power to the detector and refit cover.
4. Stand outside the protected area and wait for the Alarm LEDs to go out.
5. Walk into the protected area and stop when the Alarm LEDs illuminate.
Mark the position carefully.
6. Repeat steps 4 and 5 until the complete PIR surveillance pattern has
been mapped.
Masking
It may be impossible to avoid problem areas within the surveillance pattern,
for example; air currents. If false alarms are established during walk testing
and the cause cannot be removed from the protected area, locate the cause
and establish the lens segment covering the particular area. Mask the lens
segment from the inside of the lens using only the masking material supplied.
The centre lens should be masked when mounting the detector less than
2.4m high.
Setting The Operational Mode
When the surveillance pattern has been set up for both microwave and PIR
sensor and any necessary masking has been done, the operational mode of
the detector must be set.
Setting The Walk Test Mode
With a link fitted across the ‘Test’ terminals, the alarm LEDs will indicate
movement at all times. However, where Alarm LED illumination is not desir-
able during the ‘Unset’ period, the link should not be fitted to the ‘Test’ jumper
pins and should be left fitted to one pin only. In this mode the Alarm LEDs will
only illuminate during a ‘Walk Test’ initiated by applying 0V to terminal 7, e.g.,
panel walk test, (or if the link is fitted across the ‘Test’ terminals).
Setting ‘Trouble’ LED Mode
The Alarm LEDs can be set to flash in the event of the microwave supervi-
sion detecting a microwave malfunction by fitting a link across the ‘Trouble’
jumper link.
The operation of the microwave sensor and the PIR sensor will depend on
the position of the links across the ‘Microwave’ and PIR jumper pins.
1084 PIR Pattern Adjustment
