Bosch Security Systems Inc. DS720I 用户手册

The DS720i is a long range dual passive infrared (PIR)/microwave
(mW) intrusion detector that utilizes state-of-the-art signal
processing to maximize catch performance and reduce false
alarms.

• Description: DS720i Long Range Dual PIR/Microwave Intrusion

Detector.

• Input Power: 9 to 15 VDC, 32 mA DC nominal @ 12.0 VDC (up

to 60 mA DC during walk testing, stored alarms, or trouble
conditions).

• Standby Power: There is no internal standby battery. Connect to

DC power sources capable of supplying standby power if primary
power fails. 32 mA-H required for each hour of standby time
needed. Four hours (128 mA-H) minimum are required for
Underwriters Laboratories' Certificated installations.

• Alarm Relay: Silent operating Form "C" reed relay. Contacts

rated 3 watts, 125 mA, 28 VDC maximum for DC resistive loads;
and protected by a 4.7 ohm, 1/2 Watt resistor in the common "C"
leg of the relay. Do not use with capacitive or inductive loads.
Alarm relay contacts on terminals 3,4 and 5.

• Tamper: Normally Closed (with cover in place) tamper switch.

Contacts rated at 28 VDC, 125 mA maximum.  Tamper contacts
on terminals 6 and 7.

• Trouble: Normally Closed dry contact output on terminals 8 and

9.  The contacts are rated at 28 VDC, 125 mA maximum. Open
during trouble condition.

• Operating Temperature:  -20° to +120°F (-29° to +49°C). For

• Microwave Frequencies:

• DS720i: 10.525 GHz

• DS720i-A: 9.9 GHz

• DS720i-B: 10.687 GHz

• Coverage:

90 ft. by 70 ft. (27 m by 21 m) (OA90)

Optional Long Range: 120 ft. by 25 ft. (37 m by 8 m) (OA120)

Standard Long Range: 300 ft. by 15 ft. (91 m by 4.6 m) (OA300)

• Options: TC6000 Test Cord and OA120 Optical Module.

• U.S. Patent Numbers: # 4,660,024, # 4,764,755, #5,077,548,

#5,083,106, # 5,208,567, # 5,262,783, and # 5,450,062.

Other patents pending.

• Dimensions: 8.25 in. L x 5 in. W x 5.19 in. H (21 cm L x 13 cm W

x 13.2 cm H)

Never install the detector in an environment that causes a constant
alarm in one technology; it should never be left to operate with the
green, yellow or red LED ON.

Point the unit AWAY from outside traffic (e.g. roads, alleys, and
parking lots).  Remember:  Microwave energy will pass through
glass and most common nonmetallic construction walls.

Point the unit AWAY from glass exposed to the outdoors and objects
that may change temperature rapidly.

Remember:  The PIR detector will react to objects rapidly changing
temperature within its field-of-view.

Avoid installations where rotating machines (e.g. ceiling fans) are
normally in operation within the coverage pattern.

If using the anti-mask feature, avoid locations where people or
objects may be moving within 3 ft. (1 m) of the detector.

Select a location that is most likely to intercept an intruder moving
across the coverage pattern (review coverage patterns on page 6).
The recommended mounting height for the 300 ft. x 15 ft. (91 m x
4.6 m) coverage is 10 ft. (3 m).  The recommended mounting height
for the 90 ft. x 70 ft. (27 m x 21 m) and 120 ft. x 25 ft. (36.6 m x 8 m)
coverages is 7.5 ft. (2.3 m).  The surface should be solid and
vibration-free.

Remove the cover by inserting a flathead screwdriver or other flat
object into the slot at the bottom of the cover, and twist until the
cover snaps free of the front tabs on the base. Lift the cover up and
away to clear the rear base tabs.  Do not bend or remove the
microwave antenna located on the front of the permanent reflecting
mirror.

Remove the circuit board from the base by pressing the two circuit
board retainer tabs outward while lifting the circuit board away from
the base.

Select and break away the appropriate thin wall wire entrance and
mounting hole coverings in the base.

Using the base as a template, mark the location of the mounting
holes on the mounting surface, and pre-start the mounting screws.

Route wiring as necessary to the rear of the base and through the
wire entrance, then firmly mount the base to the mounting surface.

PI R
NV

M W
N V

AM

MW

Terminal

Strip

Set-up

Switch Bank

Microwave Range

Adjustment

Tamper Switch

PIR Noise

Voltage

Pins

Microwave

Noise Voltage

Pins

Microwave

Antenna

Extra

Terminals

Anti-Mask

Transmitter

Light Pipe

1

2

3

4

5

6

7

8

Copyright © 2000 Detection Systems, Inc.
DS720i Installation Guide
P/N: 43744B                                      09/00