LGMT434 Masthead Repeater Installation Handbook
Page 12.
Testing the PIR detectors
Step 1. Testing with a Walk test Instrument. Hang the detector on the wall bracket
and walk about within the detection area using the Walk Test Instrument. The test in-
strument will display the unit code and bleep each time detection takes place. In filter
mode it will ignore all other unit codes on the site and only respond to the detector under
test. Other information will also be displayed such as signal strength and Tamper,
Shock and Cloak alarms.
NB: The Cloak detection will only work during day light and is not instantaneous. To
test this, ensure the detector has been in position for at least 5 minutes and then cover
the lens with a bag. After a few minutes the detector will send a Cloak message .
Anti Tamper will indicate if the detector is opened.
To test the Shock sensor, strike the detector hard with something like the handle of a
large screwdriver.
If a walk test instrument is not available then a Masthead can be utilised for a simple test.
Testing with a Masthead receiver. A sounder is available for the masthead receiver to
facilitate walk testing. Model LGSOU12. Connect this sounder to the RS232 output of
the Masthead in accordance with it’s operating instructions. Set the masthead site code
and sub net code to be the same as the detector. Connect a 12 volt battery to the mast-
head and proceed to walk about within the detection area. The sounder will alert each
time detection occurs. This sounder will operate on any of the 64 unit codes.
Testing with a portable computer. The masthead outputs text from it’s RS232 termi-
nals. A computer may be connected to these terminals to view all the mastheads re-
ceived information. An optional accessory data lead is also available.
The computer may also be used to input a name for each Unit code which will be trans-
mitted to the walk test instrument.
Settings: Baud rate 19200. 8 data bits. 1 stop bit. No Parity.
Step 2. Angle adjustment. There are three angle adjustment screws which must be
slackened before the detector can be adjusted to the correct position. Once correct area
coverage has been achieved, lock the angle adjustment screws tightly.
If a sun shield is required, fit this in place before fitting the antenna.
Step 3. Finish. Lift the detector off the wall bracket and dismantle again. Disconnect
the batteries. Set the Pulse Count switches to one count. A higher number may be
required for sites where loose materials are allowed to blow about or where strong sun
light can reflect directly into the detector lens. Higher pulse count settings will reduce the
effective detection range.
Re-assemble the detector and hang it back on the wall bracket. It will not have changed
position because the angle adjust screws have been locked.
Fit the two M5 16 mm screws to the top and bottom of the wall plate and tighten.
