User Manual

PLUS System Manual System Installation 17
Proprietary Information: Do not disclose unless authorized under a Nondisclosure Agreement and the Partner Agreement.
2.2 Reader Placement and Wiring Diagram
After identifying the locations where Readers will be installed, you should develop a diagram that
illustrates where Readers will be placed and how they will be connected to each other and to the SDP.
Use the building floor plan to mark Reader locations, label each wiring chain, and clearly identify
which Reader locations are at the beginning, middle, and end of each chain.
Wiring chains with more than three Readers require the use of an external Reader power supply. The
diagrams below describe your options for connecting and powering Readers.
AC Power
Reader 1
SDP
Reader 2 Reader 3
No additional power supplies required for up
to three Readers per port
Figure 2-5: One through Three Readers per Chain
A C P o w e r
R e a d e r 1
S D P
R e a d e r 2 R e a d e r 3 R e a d e r 4 R e a d e r 5 R e a d e r 6
48 V
S u p p ly
Figure 2-6: Four through Six Readers Per Chain
It is recommended that wiring be put into place prior to installation of the Readers and Antennas. Use
a qualified electrical contractor to ensure that building codes are followed. After wiring has been
completed, update the wiring diagram with any changes that were necessary. Use a visual cue (tape
marker, etc) on the ceiling so that the ends of the cables can be easily located behind the correct
ceiling tile.