User's Manual

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Microwave Motion Sensor
m
odule
HB180 Users Manual
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ST Electronics (Satcom & Sensor Systems) Pte. Ltd.
29 New Industrial Road, ST Electronics Paya Lebar Building, Singapore 536213
Tel: (65) 6521 7888 Fax: (65) 6521 7333 Email: agilsense@stee.stengg.com
Website: www.agilsense.com (
Regn
:
199103901W
)
Other than noises generate from internal electronic circuit, in actual applications, other noises may be
picked up from surrounding, or other part of the electronic circuit.
Special attention has to be given to the interference picked up from fluorescent light, as the 100/120 Hz
noise is closed at the Doppler frequency generated by human movement.
On and off switching of certain devices (relay, LED, motor, etc.) may generate a high magnitude of
transient noise at the IF terminal. Careful PCB layout and time masking is necessary to prevent false
triggering.
DC Level - DC level (0.01 to 0.2 Vdc) exists at the IF terminal and its polarity can be positive and
negative. Its magnitude may vary over temperature. AC coupling is recommended for IF terminal
connection.
9. Radiation Safety
Microwave radiation from the module is well below established safety standards for general public
environment, like ANSI C95.1-1991 of USA and NRPB-G11 of United Kingdom.
10. Handling
The module has been fully tested to specifications. Upon opening, tighten or loosen the chassis will
cause performance deterioration.
The module is an electrostatic sensitive device (ESD). Precautions shall be observed for handling and
assembly.
11. Product Support
Please contact our product support engineers in the factory for technical assistance whenever necessary.
Product Support (Microwave Sensors)
Tel: (65) 6521 7948
Fax: (65) 6521 7801
e-mail: agilsense@stee.stengg.com