5.0 Configuration Switch Settings
The DS794Z has several features that are controlled using the configuration switches.
CONFIGURATION | OFF |
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ON |
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SWITCHES |
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1 | 2 | 3 | 4 | 5 | ||
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1 ON = LED ON
1 OFF = LED OFF
2 ON and 3 ON = | Standard Sensitivity | |
2 OFF and 3 ON = | Intermediate Sensitivity | |
2 ON and 3 OFF | = | High Sensitivity |
4 ON and 5 OFF | = 4 Day Motion Monitor | |
4 OFF and 5 ON | = 30 Day Motion Monitor | |
4 OFF and 5 OFF = | Motion Monitor Off | |
5.1 LED Operation (S1)
•ON: Allows the Alarm/Test LED to operate when activated by motion.
•OFF: The LED will not operate on alarm activation, but will indicate a supervision trouble condition.
5.2 Sensitivity Mode (S2 and S3)
Sensitivity modes depend on the type of coverage desired and the installation environment.
•Standard Sensitivity: The recommended setting for the DS794Z with the 80 ft. (24.4 m) Mirror installed. Tolerates environment extremes on this setting. Not recommended for the 120 ft. (36.6 m) and 200 ft. (61 m) coverages.
•Intermediate Sensitivity: The recommended setting for the 120 ft. and 200 ft. (36.6 m and 61 m) coverages or for locations where an intruder is expected to cover only a small portion of the protected area. Tolerates normal environments on this setting.
•High Sensitivity: The setting for fast response to intruder signals. For use in quiet environments where thermal and illumination transients are not anticipated.
If both switches are in the Off position, the unit will default to the Intermediate setting.
NOTE: Although the sensitivity modes provide different degrees of tolerance to environmentally caused alarms, the installer should assure peak background noise voltage readings do not exceed ±0.15 VDC. (See Section 8.0 Final Tests).
5.3 Motion Monitor (S4 and S5)
Set switches S4 and S5 for the desired Motion Monitor time (see Supervision Features). The detector is shipped with the Motion
Monitor feature Off.
6.0 Supervision Features
The DS794Z performs several supervision features that, combined with the advanced motion detection capabilities of the detector, provide an extremely high level of security. A supervision trouble condition is indicated at the detector by the Alarm/Test LED (see the Supervision Display Chart).
•The LED indicates the cause of the supervision trouble once per second using coded pulses. The supervision trouble signal activates the Trouble Output available on terminal 8.
The supervision features function as follows:
•PIR: The operation of the PIR is electronically checked approximately every 12 hours. If the PIR fails, the Alarm/Test LED will flash 4 times and the Trouble Output will activate.
•Motion Monitor Supervision: This feature verifies that the detector has a clear view of the detection area. When selected using switches S4 and S5, a supervision timer is activated. A trouble condition will be indicated if the detector has not alarmed at least once during the selected time period (this feature can be disabled by placing both switches in the Off position). The time period selected should be long enough to allow adequate time for holiday weekends.
Refer to Section 5.0 (Configuration Switch Settings) for proper switch settings.
If the time period selected has elapsed from the last alarm, the LED will flash 2 times and the Trouble Output will activate.
It is recommended that the 30 day timer be selected. This verifies that the unit is operational and avoids nuisance trouble conditions caused by holidays, vacations, etc.
Supervision Display Chart
LED | CAUSE |
ON | Unit Alarm |
Flashing 2 | Motion Monitor Timeout |
Flashing 4 | PIR |
7.0 Setup and Walk Testing
If a different optical module is to be used:
•Slide the current module free from its housing. Install the new optical module onto the housing. Make sure it snaps into place.
NOTE: Excessive handling of the front mirrored surfaces may lead to performance degradation.
• Replace the front cover.
NOTE: All testing must be performed with the front cover in place.
•Apply power to the unit.
•Wait at least two minutes, after applying power, to start walk tests. For best results, wait at least 1 minute between walk tests to allow the processing to adjust to the background.
NOTE: Walk testing should be done across the coverage pattern as shown.
•The edge of the coverage pattern is determined when the Alarm/Test LED indicator (and optional Sonalert, if installed) first turns on.
NOTE: The use of a Sonalert type device (sounder) will provide an audible tone during the time the unit is in alarm. Of the three available connector pins, the center pin is positive (+) with respect to either outside pin (outside pins are common
Walk test the unit from all directions to determine the boundaries.
• After completion of the walk tests, remove the Sonalert (if installed).
DS794Z Installation Instructions | © 2011 Bosch Security Systems, Inc. | Page 3 |
