2.0 Control Panel Programming
Refer to the multiplex programming section of your Control Panel
Reference Guide for information on programming multiplex zones
for this device.
Installation Instructions
for the MX938i
Ceiling Mount Multiplex
PIR Intrusion Detector
3.0 Mounting
Avoid
1.0 Specifications
• Input Power:
Connects directly to the Multiplex Bus of the
Control Panel and optionally to an auxiliary
12 VDC source.
Moisture
Moving objects
• Current Draw:
2-Wire:
Mounting Outdoors
Direct or
Hot or cold air
reflected
LED Off:
< 350 µA draw on Mux Bus.
directed onto
sunlight
In Alarm; LED On: 2 mA draw on Mux Bus.
4-Wire:
sensor
Pets or animals
LED Off:
< 350 µA draw on Mux Bus.;
0 mA draw on Aux. power.
In Alarm; LED On: < 350 µA draw on Mux Bus;
Walk Test/Alarm
3 mA draw on Aux. power.
LED Indicator (3)
Module Tabs (2)
• Standby Power: There is no internal standby battery. Connect
to DC power sources capable of supplying
standby power if primary power fails. For each
hour of standby time needed, 350 µAh are
required. For UL Listed Requirements, four
hours (1400 µAh) minimum are required.
AR8-13
Rear Wire
Entrance
Terminal
Strip
Terminal
Strip
Sensitivity
Jumper
Signal
Wire
Tie-Downs (2)
Gain
Interface
Pins
Optical Module
with Cutaway to
show Circuit
Jumper
• Coverage:
360° by 60 ft. (18.3 m) diameter coverage
when mounted on 8 to 18 ft. (2.4 to 5.5 m)
high ceilings. Pattern consists of 64 zones
grouped into 16 barriers, with one additional
zone looking straight down from the unit
(sabotage). Each barrier is 30 ft. (9.2 m) long
and 4.4 ft. (1.3 m) wide at 30 ft. (9.2 m).
Choice of two optical modules depending
on ceiling height. For UL Listed
Requirements, the coverage is 360° by 54 ft.
(16.5 m) when mounted 10 to 13 ft. (3.1 m to
4.0 m) using the AR8-13 array and when
mounted from 15 to 18 ft. (4.6 m to 5.5 m)
using the AR13-18 array.
Mounting
Slots (4)
Board detail
LED
Operation
Jumper
Address
Cover
Switches Top View of Enclosure Tamper
with Cover Removed
Mounting Base
The mounting surface should be solid and vibration free
(i.e., drop tiles should be secured if the area above the
tiles is used as an air return for HVAC systems).
IMPORTANT
• Select a location that is most likely to intercept an intruder moving
across the coverage pattern. The recommended mounting height
range is 8 to 18 ft. (2.4 to 5.5 m).
• Sensitivity:
• Tamper:
Selectable for Standard, Intermediate or High. • Remove the cover by turning counterclockwise.
A tamper condition is signaled through the • Remove the base from the enclosure by pressing the two
Multiplex Bus and displays at the system
keypads.
enclosure release tabs inward while lifting the enclosure away
from the base.
• Temperature:
The storage and operating temperature Hint:
range is -20°F to +120°F (-29°C to +49°C).
For UL Listed Requirements, the
Slightly rock the enclosure side-to-side during removal,
to overcome the friction caused by base-to-enclosure
terminal pins.
temperature range is +32°F to +120°F (0°C • Route wiring as necessary to the rear of the base and through
to 49°C).
the center hole.
• Control Panel
Requirements:
DS7400, DS7400X, or DS7400Xi Control
Panel with a DS7430 or DS7436 Multiplex
Expansion Module. DS7400 and DS7400X
require ROM version 1.07 or greater. The
9000 Series Control/Communicators with
D8125MUX Module installed.
Be sure all wiring is unpowered (de-energized) before
routing.
• Securely attach 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
and square electrical boxes.
• Patents:
This device is covered under one or more of
the following U.S. patents: #4,764,755,
#5,268,668, and #5,302,941.
NOTE: The MX938i base will not completely cover a four-inch
square box. Where aesthetics are important, a four-inch
octagonal box is recommended.
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= SWITCH ON
(CLOSED)
= SWITCH ON
(CLOSED)
= SWITCH ON
(CLOSED)
= SWITCH ON
(CLOSED)
ZONE
(POINT)
ADDRESS
ZONE
(POINT)
ADDRESS
ZONE
(POINT)
ADDRESS
ZONE
(POINT)
ADDRESS
SWITCH NUMBER
SWITCH NUMBER
SWITCH NUMBER
SWITCH NUMBER
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
001
002
003
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005
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MX938i Installation Instructions
© 2004 Bosch Security Systems
Page 3
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7.0 Setup and Walk Testing
8.0 Maintenance
• The range and coverage should be checked in accordance with
the Walk Testing section (6.0) on a regular basis.
Before walk testing, the system should be fully wired,
powered, and programmed.
IMPORTANT
• Consult the Control Panel’s User's Guide for the procedure on
performing a zone test. Performing a zone test on a regular
basis assures an alarm output prior to arming the system.
• Configure LED Configuration Switch (S1) to LED ON.
•
Replace the front cover.
• Excessive handling of the mirror surfaces may lead to
performance degradation.
NOTE: All testing must be performed with the
front cover in place.
9.0 Coverage Patterns
• Refer to the mirror module and pattern drawings for masking
information.
• Wait at least 2 minutes (with no motion in the
coverage area) for the detector to setup.
• Walk test across the coverage pattern.
• Before masking, be sure the chosen mirror surface is the correct
one. When removing masking, remember, many adhesives will
either destroy the mirror’s surface or leave residue behind to
reduce coverage performance.
• The edge of the coverage is determined by
activation of the LED.
• Walk test the unit from both directions to determine the
boundaries.
On 2-wire systems, configure the LED to OFF when
finished with walk tests.
IMPORTANT
TOP VIEW
9 Meters
6
3
0
3
6
9
30
30
AR13-18 SIDE VIEW (Cross Section of 2 Opposite Zones)
9 Meters
6
3
0
3
6
9
4.5
3
15
10
20
20
10
10
0
0
30 Feet
20
10
0
10
20
6
30
0
0
(Cross Section of 2 Opposite Zones)
AR8-13 SIDE VIEW
Meters
9
6
0
3
9
3
10
20
10
20
10
0
3
0
30 Feet 20
10
0
10
20
30
30
30
9 Meters
6
3
0
3
6
9
© 2004 Bosch Security Systems
130 Perinton Parkway, Fairport, New York, USA 14450-9199
Customer Service: (800) 289-0096; Technical Support: (888) 886-6189
03/04
MX938i Installation Instructions
P/N: 45988F Page 4
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