User Manual

PLUS System Manual System Installation 23

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IMPORTANT:

Do not attempt to use the system with an unterminated Ethernet cable plugged into the SYNC

OUT port of a Reader, or unstable operation can result. An Ethernet cable plugged into the

SYNC OUT port of a Reader must be plugged into the SYNC IN port of another Reader to be

properly terminated.

R e a d e r

S D P

U n te rm in a te d

C a b le

Figure 2-14: Unterminated Ethernet Cables

2.3.5 Surveying Readers and Generating Coordinates

After Readers have been installed in the ceiling, their locations can be surveyed and coordinates

generated for entry into the Visualizer software. There are many approaches to surveying locations,

and specific measurement techniques are beyond the scope of this document. The result of the survey

process will be Reader locations in a 3D rectangular coordinate system established relative to the

building floor plan. It is important to perform an accurate survey to enable the best results from the

Location Engine. The goal should be inch-level accuracy for the Reader survey. The origin of the

coordinate system may be a Reader location, corner of the building, or some other architectural

reference point that is easy to reference. Maintain this information in a spreadsheet (Figure 2-15)

including Reader MAC address and X-Y-Z location. Reader and Calibration Tag installation

worksheets are included at the end of this section.

Figure 2-15: PLUS Reader Installation Worksheet