Mounting
Base
REAR WIRE
ENTRANCE
WIRE
TIE-DOWNS (2)
TERMINAL
STRIP
INTERFACE
PINS
MOUNTING
SLOTS (4)
1
8
Top
View
of
Enclosure
with Cover and Optical Module Removed
ALARM/TEST LED
INDICATOR (3)
SOUNDER
NOISE
VOLTAGE
CONFIGURATION
SWITCHES
COVER
TAMPER
ON
OFF
TEST LEAD
CUTOUT
ANTI-TAMPER SCREW HOLE
REQUIRED FOR EN50131
INSTALLA TIONS
ANTI-T AMPER SCREW HOLE
REQUIRED FOR EN50131
INST ALLA TIONS
LO
HI
GAIN SELECT
JUMPER
HI
LO
NOTICE!
CAUTION!
The use of a Sonalert type device (sounder) will provide an audible tone
Be sure all wiring is unpowered (de-energized) before routing.
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 (-)).
Use of the sounder is intended only as an aid for walk testing during
installation.
3. Place the cover on the unit, and twist-lock it clockwise into place.
NOTICE!
Be sure the TC6000 and Sonalert leads are dressed through the
cutout.
4. Apply power to the unit.
5. Wait at least two minutes, after applying power, to start walk tests.
NOTICE!
Walk testing should be done across the coverage pattern as shown.
Figure 2.3: Overview
4. Firmly mount the base. Depending on local regulations, the base may
6. The edge of the coverage pattern is determined when the Alarm/Test
be directly surface mounted using anchors, mollies, or wing-nuts, or
LED indicator (and optional Sonalert®, if installed) fi rst turns on.
may be mounted to standard 4-inch octagonal or square electrical
boxes.
7. Walk test the unit from all directions to determine the boundaries.
8. After completion of the walk tests, remove the Sonalert® (if installed).
NOTICE!
6 Final Tests
The DS938Z base will not completely cover a 4-inch square box. Where
aesthetics are important, a 4-inch octagonal box is recommended.
6.1 Noise Measurement
NOTICE!
NOTICE!
Mounting to removable ceiling tiles is not recommended unless a
Meter readings are very important in determining background
sandwich is made of the base, ceiling tile, and a back plate behind the
disturbance levels and catch margin sensitivity.
tile. Covers used for 4-inch octagonal and square boxes make a suitable
back plate (when used with bolts and wing nuts, as an example).
1. Connect a 20,000 ohm/volt (or greater) DC VOM to the Noise Voltage
connector using the TC6000 as shown. Set meter scale for about 3.0
VDC.
3 Wiring
2. The base reference level for reading background noise or target
voltages is approximately 2.0 VDC. Installations in quiet environments,
therefore, will result in a steady meter reading between 1.9 and 2.1
CAUTION!
Only apply power after all connections have been made and inspected.
fl uctuates greatly.
VDC. Look for areas and sources of thermal disturbances if the meter
Do not coil excess wiring inside detector. Use no smaller than #22
AWG (0.8 mm) wire in the terminal strip.
8 © 2013 Bosch Security Systems, Inc.
F.01U.263.663 | 04 | 2013.04 |
5
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