Establish The Pir And Microwave Coverage; Adjustable Pir Sensitivity - Bosch ISC-CDL1-W15G Reference Manual

Commercial Series TriTech Motion
Detector
4.
5.
7.3.2

Establish the PIR and microwave coverage

The motion detector PIR and microwave factory settings are optimal for most installations. If
you must adjust the PIR and microwave coverages, use the microwave potentiometer and walk
test to do so.
Preparing for the PIR and microwave walk test:
1.
2.
3.
4.
Performing the walk test and making adjustments:
1.
2.
3.
4.
5.
6.
Notice!
Do not adjust the microwave range higher than required. Doing so might cause the motion
detector to catch movement outside of the intended coverage pattern.
Microwave signals penetrate certain surfaces such as drywall, wood, and glass. If the
protected area is significantly smaller that the motion detector's nominal range, reduce the
microwave range so that it can still detect motion on the near side, but not on the other side
of the surface.
7.3.3

Adjustable PIR sensitivity

The motion detector includes two PIR sensitivity modes: high and low.
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Select the mode using switch 2. ON is high. OFF is low.
Bosch Security Systems, Inc
Walk test from the opposite direction across the pattern to determine both boundaries.
The center of the pattern should be pointed toward the center of the intended protection
area.
Walk test the unit from all directions across the pattern to determine all the detection
pattern boundaries.
Remove the motion detector body from the base.
Turn the microwave potentiometer to the minimum range (to the left, counterclockwise).
Place the motion detector body onto the base.
Wait at least 2 minutes.
Begin the walk test and observe the walk test LED.
If you do not observe LED activity while walking along the farthest edge of the desired
coverage area, increase the microwave range. Remove the motion detector body from the
base and increase the range by turning the potentiometer clockwise. (Refer to Adjustable
microwave sensitivity, page 24 for detailed instructions.)
Place the motion detector body onto the base.
Wait at least 2 minutes.
Repeat walk test procedures and range increase until the PIR and microwave detection
range is as desired.
If on the last walk test, you observe LED activity while walking outside the coverage area,
decrease the microwave range and repeat the walk test.
Low sensitivity. The recommended setting for maximum false alarm immunity. The PIR
tolerates environmental extremes on this setting.
High sensitivity. The recommended setting for any location where an intruder might cover
only a small portion of the protected area. The PIR tolerates normal environments on this
setting. This setting improves catch performance.
Reference Guide
Configuration and walk test | en
2015.06 | 02 | F.01U.314.294
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