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9 Masquage du diagramme de couverture
Le DS939 est fourni avec un jeu de masques permettant le masquage des zones indésirables. Le
kit de masquage contient deux masques de 120 ° et deux de 90 °. Les masques sont conçus pour
être utilisés à l'extérieur du détecteur. N'essayez pas d'ouvrir le détecteur pour placer les masques
à l'intérieur.
Les masques fournis vous permettent de masquer 90 °, 120 °, 180 °, 210 °, 240 ° ou 330 °.
Quelques exemples sont proposés ci-dessous.
120° Mask
Masking 120°
Coverage with 120° masked
Coverage with 240° masked
Coverage with 90° masked
Figure 9.1 Masquage du diagramme de couverture
26 © 2015 Bosch Security Systems, Inc.
90° Mask
Masking 180°
Coverage with 180° masked
Coverage with 210° masked
5 Feature Selection
HIGH
LOW
PIR Signal
Gain
Figure 5.1: Feature Selection
5.1 PIR Sensitivity Selection Pins
Refer to Figure 5.1. For selection, place the plug across the appropriate pins (1).
No jumper across the "HIGH/LOW" pins puts the detector in a "High" setting. Low
Sensitivity (LO): The recommended setting for most installations. This setting
tolerates environment extremes. The detector is shipped in Low Sensitivity mode.
High Sensitivity (HI): Use in locations where adequate catch performance is not
achieved in the Low Sensitivity mode. This setting tolerates only minor environmental
changes.
NOTICE!
For UL Listed Requirements, set the PIR sensitivity to HIGH when in-
stalling the detector at heights of 3.7 m (12 ft) or higher.
For EN50131 applications, set the PIR sensitivity to HIGH.
6 LED Operation
The detector uses a blue LED to indicate a current or stored alarm condition.
6.1 LED On/Off Pins
Refer to Figure 5.1. The ON position allows operation of the LED (2). If LED indication
is not desired after setup and walk tests are completed, place in the OFF position.
No jumper across the "ON/OFF" pins disables the LED.
Walk test the unit from all directions to determine all the detection pattern
boundaries.
NOTICE!
Wait at least 2 min after power up before walk
testing.
ON
OFF
F.01U.273.400 | 03 | 2015.11 | 7
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