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© Bosch Security Systems, Inc. 2011
DS938Z Installation Guide
4.0 Mounting
Select a location likely to intercept an intruder moving
across
the
coverage pattern (review patterns on page 2).
The recommended
ounting height is 8 to 18 ft. (2.4 to 5.5 m).
0
10
10
20
20
30 Feet
30
0
10
15
AR13-18 SIDE VIEW
(Cross Section of 2 Opposite Zones)
0
3
3
6
6
9 Meters
9
0
3
4.6
0
10
10
20
20
30 Feet
30
0
10
AR8-13 SIDE VIEW
(Cross Section of 2 Opposite Zones)
0
3
3
6
6
9 Meters
9
0
3
0
3
6
9 Meters
3
6
9
0
10
20
30
10
20
30
TOP VIEW
NOTE:
The mounting surface should be solid and vibration free (e.g.,
drop tiles should be secured if the area above the tiles is used
as an air return for HVAC systems).
• Do not mount near air handling system outlets, or in areas of
extreme drafts.
• Remove the cover by turning it counterclockwise.
• Remove the base from the enclosure by pressing the two
enclosure release tabs inward while lifting the enclosure away
from the base.
HINT:
Slightly rock the enclosure side-to-side during removal to
overcome the friction caused by the base-to-enclosure terminal
pins.
• Route wiring as necessary to the rear of the base and through
the center hole.
NOTE:
Be sure all wiring is unpowered (de-energized) before routing.
• Firmly mount the base. Depending on local regulations, the
base may be directly surface mounted using anchors, mollies,
or wing-nuts, or may be mounted to standard four inch
octagonal or square electrical boxes.
NOTE:
The DS938Z base will not completely cover a four inch
square box. Where aesthetics are important, a four inch
octagonal box is recommended.
HINT:
Mounting to removable ceiling tiles is not recommended unless a
sandwich is made of the base, ceiling tile, and a back plate behind
the tile. Covers used for four inch octagonal and square boxes
make a suitable back plate (when used with bolts and wing nuts,
as an example).
5.0 Selecting the Optical Module (AR8-13 or AR13-18)
• Replace the enclosure onto the base.
• For ceilings between 8 and 13 ft. (2.4 and 4.0 m) from the floor,
use the optical module marked AR8-13. This marking can be
found next to the two optical module tabs.
For ceilings between 13 and 18 ft. (4.0 and 5.5 m) high, use the
optical module marked AR13-18.
To replace an optical module, push the optical module tabs
towards the center until the module snaps free of the circuit
board. Holding the new module by the tabs, snap the new
module into place.
Avoid fingerprints on the mirrored surfaces. Should the mirrored
surfaces become soiled or otherwise marked, they can be
cleaned using a soft, clean cloth and any commonly available,
mild window cleaner.
6.0 Wiring
CAUTION:
ONLY APPLY POWER AFTER ALL CONNECTIONS
HAVE BEEN MADE AND INSPECTED.
NOTE:
Do not coil excess wiring inside unit.
–
+
RELAY
1
2
3
4
5
6
7
8
6 to 15
VDC
Alarm
INTERFACE
PINS
KEY GUIDE
TAMPER
•
Terminals 1 (-) & 2 (+):
Power limits are 6 to 15 VDC. Use no
smaller than #22 AWG (0.8 mm) wire pair between the unit and
the power source.
•
Terminals 3, 4, & 5:
Alarm relay contacts rated 125 mA, 28 VDC
maximum for DC resistive loads. Use terminals 4 & 5 for
Normally Closed circuits.
Do not use with capacitive or inductive
loads.
•
Terminals 6 & 7:
Normally Closed tamper contacts rated at
28 VDC, 125 mA.
•
Terminal 8:
Trouble Output.
7.0 Configuration Switch Settings
The DS938Z has several features that are controlled using the
configuration switches.
1 ON
= LED ON
1 OFF
= LED OFF
2 ON
and 3 OFF
= High
2 OFF and 3 ON
= Intermediate
2 ON and 3 ON
= Standard
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 Disabled
ON
OFF
O
N
1
2
3
4
5
7.1 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.
INTERFACE
PINS
ANTI-VANDAL
TIE-DOWN SCREW
HOLE (2)
ENCLOSURE RELEASE
OPENINGS (2)
Base
COVER TWIST
TABS (4)
Cover
INTERFACE
CONNECTOR
ENCLOSURE
RELEASE TABS
OPTICAL
MODULE
TEST LEAD CUTOUT
Enclosure
