Detex DTX-4300 - Manual (Page 20)

2.2 Other
Installation
Considerations Sections 2.2.1-2.2.4 describe important considerations
the installer must decide upon before actually starting
to install and wire the prox.pad plus unit.
2.2.1 Power
Supply/Current
Requirements
Power for the prox.pad plus unit must be from a mini-
mum 10-15 volt DC linear, filtered and regulated
power supply. It is typical for the chosen power supply
to power BOTH the prox.pad plus unit and the se-
lected locking device. When using one power supply
for both the prox.pad plus unit and locking device, be
sure to include both devices in your current require-
ments calculations.
NOTE: IEI recommends that you ground the power
supply to earth ground.
2.2.2 Gang Box and
Mounting
For the wall mounted installation configuration, a sin-
gle gang electrical box can be used. (Typically, the
prox.pad plus unit is wall mounted outside the access
area on the unsecure side of the door.)
2.2.3 Mounting the
Unit on Metal
The prox.pad plus unit uses radio frequency to transfer
power to and communicate with the proximity card
or keytag. If the antenna is mounted directly on a metal
building or wall, some of the energy is absorbed by
the metal, resulting in less power being transmitted to
the keytag; this causes reduced read range. If you must
mount the prox.pad plus unit on metal, test the unit
in place before permanently installing it. If read range
distance is not adequate, a non-metallic spacer can be
fabricated and installed between the unit’s antenna
and the metal mounting surface.
2.2.4 RF Interference
The prox.pad plus unit should not cause interference
to other equipment as it is designed to meet FCC
guidelines. However, other devices can interfere with
prox.pad plus operation.
Chapter 2: Installation 2.2 Other Installation Considerations
2-2 prox.pad plus Install/Program. Manual, PPP, D4b
Part No. 6105679, Rev. 1.1