User's Manual

User Guide

WherePort III User Guide D948 Rev B

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1.4 This Guide

This guide presents the basic principles of WherePort communication and the major

issues for placing them on a site. It is intended to support both the planning for and the

implementation of an RTLS application using WherePorts.

It describes the WherePort, the WhereTag and its responses, the characteristics of

the magnetic field, and how the WherePort is used in a variety of applications. For more

detailed information about the WhereTag see the WhereTag Users Guide.

Also included is a description of the simulator program and how it is used to

determine effective WherePort site placement and configuration.

1.5 The WherePort

The WherePort is a round, dome shaped device, (9 inches in diameter and 5.25 inches

high). It is powered by either 24 VAC or 36 VDC. A mobile version is available that

uses only DC power (12-36 VDC; 1.5A). The complete specifications are shown in Table

2. The wiring schematic is shown in Figure 2.

The WherePort is configured using commands sent through the RS-232 interface.

These commands are described in Appendix B.

Table 2 WherePort Specifications

Size 9.0 x 5.25 in. (229 x 133 mm)

Weight 2.3 lbs (1.0 Kg)

Voltage 24 VAC or 36 VDC Voltage (standard)

12-36VDC (AC Voltage is not allowed) (mobile)

Current 250 mAmp max (standard) 1.67A Max. (mobile)

PwrDiss 4.2 Watts (max)

Operating Temperature -40 to +55 ºC

Storage Temperature -40 to +70 ºC

Humidity 0 to 100% Non-condensing

AC/DC Power

Connection

2 wires (black and white)

For mobile versions, positive input is connected to white

wire and negative input is connected to black wire.

Phase Synchronization 2 wires from previous WherePort (green/orange)

2 wires to following WherePort (red/blue)

Configuration Interface

12 pin round, weather tight connector (provided by Zebra

Enterprise Solutions) with custom cable (com port)