User's Guide

User Guide

User Guide, WhereTag IV GT, TFF-3110 D2280 Rev 02

Each WhereTag IV GT has a unique identification number that is transmitted via radio

during each blink. When its battery is running low, the tag alerts the Zebra RTLS

infrastructure so that the tag can be proactively replaced. WhereTag IV GTs are configured

at the factory to work with common container handling equipment. Alternatively, the

WhereTag IV GT can be configured through the serial port by sending text command strings

as defined in appendix A.

The WhereTag unique ID number is also printed as a Code 128 on the bar code labels

affixed to the tag’s case. The bar code enables seamless integration with existing inventory

systems and delivers a cost effective total resource visibility solution that extends beyond

the range of the Zebra RTLS.

The vehicle version of WhereTag IV GT contains a screw terminal block for connecting the

tag to external power supply, RS-485 interface, contact detections and contact closure.

Designed to operate in a wide range of applications, the WhereTag IV GT is fully sealed and

will function in both indoor and outdoor environments.

1.3 WhereLan™ Location Sensor (LOS)

The Location Sensor and Locating Access Point receive the tag transmissions and forwards

the information to the Zebra Visibility Server Software which performs locations calculations,

database functions and systems management. The Location Sensors and Locating Access

Points communicate with each other and the Visibility Server Software via standard wired

Ethernet cables or an 802.11b-compliant wireless LAN. Utilizing sophisticated digital signal

processing technology, the LOS and LAP are able to track large populations of WhereTags

simultaneously. They can be installed in a grid configuration to provide ubiquitous coverage

over large areas comprised of many cells. The Locating Access Point combines multiple

functions: an RTLS Location Sensor and a Wi-Fi certified access point for wireless LAN

clients and applications.