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Detectors and Accessories | Motion Outdoor | 183
OD850 Series Outdoor
TriTech Detectors
Features
▶
Motion Analyzer II PIR signal processing
▶
Linear travel distance (LTD) microwave signal
processing
▶
Two sensitivity levels
▶
Timed relay output adjustable from two sec to 10 min
▶
AND/OR mode
▶
Draft and insect immunity
The OD850 Series TriTech detectors are for use outdoors
and in other harsh environments. They use a combination
of passive- infrared (PIR) and microwave detection with
advanced signal processing.
The OD850 Series is intended for use in the following
countries:
Model Countries
OD850-F1 Belgium, Czech Republic, Denmark, Greece, Hungary, Ita-
ly, Netherlands, Norway, Poland, Romania, Spain, Sweden,
Ukraine, the Americas and the Asia/Pacific Region
OD850-F2 France, UK
System Overview
The detectors process PIR signals with Motion Analyzer II
signal processing and microwave signals with Linear Travel
Distance (LTD) signal processing.
The detectors can distinguish between small, repetitive
motions such as tree limbs moving in the wind and the more
purposeful motions of intruders. These advanced
processing techniques and the detectors' mechanical
design combine to provide superior performance in a wide
range of weather conditions.
Functions
Motion Analyzer II Processing
This PIR signal processor uses multiple thresholds and
timing windows to analyze timing, amplitude, duration, and
polarity of signals to make an alarm decision. Extreme levels
of thermal and illumination disturbances caused by hot and
cold drafts, sunlight, or lightning do not cause an alarm.
LTD Microwave Signal Processing
This microwave signal processor measures the linear travel
distance of a target to make an alarm decision. It eliminates
alarms for objects that move but do not travel, such as tree
limbs and hanging signs.
Two Sensitivity Levels
The detectors have two user-selectable PIR sensitivity
settings:
Standard sensitivity is the recommended setting for a
minimum of false alarms. The detector tolerates
environment extremes on this setting.
Intermediate sensitivity is the recommended setting for any
location where an intruder is expected to cover only a small
portion of the protected area. The detector tolerates
normal environments on this setting. This setting identifies
intruders more quickly, but may produce more false alarms.
Adjustable Timed Relay Output
In addition to an alarm relay, there is a Form C,
unsupervised, timed relay contact that alternates state 1
sec after an alarm and follows a user-selectable timer. The
time expires at the set time after the last alarm (it resets on
each new alarm).
AND/OR Mode
This DIP-switch setting specifies whether the detector
reports alarm situations in the AND mode (when both
technologies simultaneously sense an alarm condition) or
in the OR mode (when either the PIR or microwave
technology senses an alarm state). OR mode provides faster
detection in some conditions as the detector activates the
alarm relay based on a single technology input.
LEDs
The high-efficiency LEDs (one red and one green) use the
same technology as traffic lights to make them visible in
sunlight. A DIP-switch setting allows the user to disable
these LEDs during standard operation to save power.
Draft and Insect Immunity
The sealed optical chamber prevents drafts and insects
from affecting the detector.
www.boschsecurity.com Bosch Security Systems B.V.
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