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16
en | Special features
5
Special features
Refer to the following for sensitivity adjustments.
5.1
Selectable beams
Crosstalk occurs when multiple beams are stacked or when used in long distances which
might cause a missed alarm (no catch). The devices are equipped with 8 different selectable
beam channels (2 Groups and 4 Channels) to prevent crosstalking. The selectable beam
channel feature allows the receiver to ignore the beams received from other transmitters
when the installation requires multiple devices to be placed in an area where a receiver is in
the beam spread of multiple transmitters. For more information on crosstalking, refer to
Installing multiple sets (stacking), page 25.
5.2
Selectable AND/OR Gate
Environmental conditions might require higher false alarm tolerance against smaller objects
passing through the detector's line of sight. To do this, set the AND/OR gate option to AND
gate mode that only causes an alarm condition when all four infrared beams are interrupted
simultaneously.
High Security applications might require the detection of smaller objects passing through the
detector's line of sight. To do this, set the AND/OR gate option to OR gate mode that causes
an alarm condition when either the upper two beams or the lower two beams are interrupted.
Use the selectable dip switches to choose the AND/OR GATE option on the receiver.
5.3
Level LED
The Level LED shows the beams energy level received during alignment. As more beam energy
is received, the illumination time shortens as follows: ON => OFF once => OFF twice => OFF
three times => Flashing => ON three times => ON twice => ON once => OFF.
When the LED turns off, the alignment is complete.
Refer to Console overview for Status Indicator locations (callout #6).
5.4
EDC (Environmental Discrimination Circuit)
The EDC generates a signal when the beam power level is significantly reduced due to
environmental conditions such as fog or rain. Two Bypass switch features are used at the
receiver, Bypass Switch Off, and Bypass Switch On.
The inability to operate for more than 3 seconds due to environmental conditions is defined as
a "Poor Environmental Condition."
Switch Condition
Off
2016.02 | 03 | F.01U.303.478
When poor
environmental conditions
present:
When either optical
module is blocked for 3
or more seconds:
Installation and Operation Guide
Available from A1 Security Cameras
www.a1securitycameras.com email: sales@a1securitycameras.com
Description
The EDC LED turns on and the EDC output activates.
Alarm signal is generated upon further loss of the beam
energy.
The EDC LED turns on and the EDC output activates. No
alarm is generated.
Photobeam 5000
Bosch Security Systems, Inc.
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