496350 Issue 1
5 of 8
7.
Terminal 8, an open collector, will go to 0V if the microwave supervision
detects a malfunction in the microwave detector. Connect to control
panel ‘Trouble’ input or to other signalling device.
8.
Connect terminals 9 and 10 to the control panel ‘Tamper’ circuit or other
warning device.
Figure 3. Connecting the 1084
Adjusting The Surveillance Pattern
Once the detector is installed, the surveillance pattern of both the microwave
and PIR sensors must be adjusted to suit the protected area. To check the
actual coverage of the detector, place links on the appropriate jumper links
as described below for each function, then walk test the protected area.
Note: A walk test can be carried out on either the microwave sensor or the PIR
sensor, or both detectors simultaneously.
Microwave Pattern Adjustment
The detector works best with the microwave sensor adjusted to the minimum
sensitivity necessary. Proceed as follows:
1.
Remove the cover and fit link across Test jumper pins (Figures 4 and
5).
1084
Adjusting the Surveillance Pattern
