DC-1023
- 6 -
8/5/2010
Your best option for Proximity Access Control
to the Reader, until a BEEP occurs. The BEEP indicates that the Reader detects and
read the card. In order to read again, the card must be fully withdrawn from the
Reader’s field of surveillance and then re-approached again. During normal operation,
the card can be presented at any angle relative to the Reader, however this will result in
slight variation of read range.
Note: Do not "wave" the card in front of the Reader. "Waving" the card in front of
the Reader will result in a diminished read range.
3 PREPARATION
FOR
INSTALLATION
3.1 SITE
SURVEY
Always conduct a site survey before starting installation, avoid any possible sources of
interference. If the Reader is not installed properly, the performance will be degraded or
more seriously the Reader may be damaged. The following is a list of installation
procedures that should be followed during installation:
•
Do not install the Reader in an area where sources of broadband noise may
exist. Examples of broadband noise sources are motors, pumps, generators,
DC-AC or DA-AC converters, non-interruptible power supplies, AC switching
relays, light dimmers, CRT's, induction heater, ultrasonic welder etc.
•
Do not bundle the reader wires together in one conduit with the AC power
cables, lock power, and other signal wiring.
•
Keep all the Reader wiring at least 12 inches (30 cm) away from all other
wiring, which includes but not limited to, AC power, computer data wiring,
telephone wiring and wiring to electrical locking devices.
•
Do not install the reader within 12 inches (30 cm) of a computer CRT terminal.
3.2 PREFERRED READER INSTALLATION PRACTICES
•
Make sure that the supply voltage of the Reader is within specification. As a
rule of thumb, higher supply voltage results in longer read range but at the
expense of higher power consumption.
•
Use cables with over-all shield (Screen).
•
For best results, run the cable in an individual conduit with at least 12 inches
distance from the AC power, computer data cables and cables for electrical
locking devices.
•
Use recommended cable. Do not use any un-shield "Twisted Pair" type cable.
•
Use the largest wire gauge possible.
•
Use dedicated and linearly regulated power supply, where applicable.
•
Use Single Point Grounding (Earthing). No ground loops.
3.3 METAL
MOUNTING
The Reader is pre-compensated for mounting on metal utility boxes.
Formatted: Bullets and Numbering
