101-092 14
FINGER007
–
Version 4.0
IDTeck – FINGER007 FINGERPRINT & PROXIMITY READER
4.2.3 EARTH GROUND
The
FINGER007
must be properly grounded to the earth for safety reasons and to prevent damage to
the micro-electronics due to electrostatic discharges. The
FINGER007
must be connected to earth
ground either through conduit, if used, or through a separate ground wire.
On-site connection to earth ground can be accomplished through :
A earth ground rod, A metal water pipe, The building’s structural steel, A ground grid
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How To Ground
Make connection with grounding bar or pipe of the building.
Connect shield of data and communication cable.
Grounding must be done one direction only otherwise it reverse to device giving fatal damage to
the device.
The grounding for communication cable, it must be less than 10
Ω
.
4.3 TIPS TO MAXIMIZE READ RANGE OF RFID READERS
4.3.1 POWER SUPPLY
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Use linear, series pass power supplies. Switching power supplies may reduce the read range.
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Use a separate dedicated power supply for each reader. Do not use the reader’s power supply for other
equipment, particularly when operating switched inductive loads such as motor control relays and
solenoids.(i.e. magnetic locks, latch or strike)
4.3.2 ENVIRONMENTAL SOURCES OF ELECTRICAL INTERFERENCE
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Metal affects radio signals. Do not cover the face of the reader with metal any kind.
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Reduce or eliminate unwanted signals from external sources.
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Do not place the reader wiring bundled in conduit with AC power cable, lock power, or signal wiring.
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Maintain all reader wiring a minimum distance of 12"(30Cm) away from other wiring such as AC
power, computer data wiring, telephone wiring, or wiring to electric locking device, etc.
