Southwest Microwave 385 Quick Start Manual

Model 385
Outdoor Microwave Transceiver
Southwest Microwave Model 385
Outdoor Microwave Transceiver System
100 to 400 ft (30 to 122 m) Detection Range
Features:
odel 385 K-Band Outdoor Microwave Transceiver provides
reliable three dimensional protection in outdoor environments.
Sensitive, field-adjustable detection circuitry is capable of
detecting the human intruder while walking running, or crawling on hands
and knees at a distance up to 400 feet (122 m) from the transceiver.
A patented* Range Cutoff (RCO) Circuit positively rejects all microwave
targets beyond a preselected range. This unique capability makes Model
385 immune to alarms from any object outside the RCO distance, even very
large microwave targets such as semitrailers, trees, trains or aircraft.
Operating at K-band, which is much less crowded than X-band, Model 385
is inherently less susceptible to outside interference form airport landing
systems, aircraft radar, and other microwave intrusion systems. Because its
K-band microwave frequency is 2.5 times higher than the X-band, the mul-
tipath signal generated by an intruder is also 2.5 times higher and detection
of slow-moving intruders is correspondingly better.
Model 385 is also equipped with a patented Zero-Range Suppression (ZRS)
Circuit which reduces the amplitude of any microwave target which is at very
close range. This circuit dramatically reduces nuisance alarms from rain,
vibration, birds and windblown objects. Neither the RCO nor the ZRS circuit
affects detection pattern.
A Built-In Multiplex System allows the Model 385 to operate in close proximity
with other Southwest Microwave Transceivers and T/R Links without mutual
interference. For multiplexed operation, a synchronizer wire (twisted pair) is
connected to each sensor. Any sensor or external clock is connected as
"master" and all other sensors are connected as "slaves." For a group of
up to sixteen sensors, only one sensor will operate at a given time.
Setup and adjustment of Model 385 is easily accomplished. Aim the trans-
ceiver into the area to be protected, apply power and allow a few minutes
to establish a reference level for reflected signals from the illuminated area.
Select the desired RCO distance 100 to 400 ft. (30 to 122 m) and perform
a walk test to determine optimum setting for sensitivity control.
Model 385 may be mounted to any solid surface by means of a lock down
swivel mounting bracket supplied with each unit. This swivel mount allows
circular rotation of up to 20 in any direction. Mounting bracket will also
o
mount to solidly based 3.5 or 4 inch (8.9 or 10.2 cm) O.D. post.
Model 385 is designed for use with Southwest Microwave T/R Links which
establish three-dimensional detection patterns, up to 1500 feet (450 m)
long, between transmitter and receiver.
Outdoor K-Band Volumetric
Detection to 400 Feet (122 m)
Resistant to Aircraft Radar and
Airport Radar Interference
Continuously Variable Range
Cut-Off Circuit Prevents Alarms
from Moving Objects Beyond a
Preselected Range
Zero-Range Suppression Circuit
Reduces Effects of Rain, Vibra-
tion, and Windblown Objects
Built-In Multiplex System for
Multiple Sensor Operation
Plug-In Test Meter Provides
Quick Set-up