User's Manual

DRAFT PLUS Tag User’s Manual 5
Proprietary Information: Do not disclose unless authorized under a Nondisclosure Agreement and/or the Terms and Conditions signed at time of purchase
1. Introduction
The 1104 Personnel Name Tag is a small, active RFID tag that works as part of a PLUS Real Time Location
System. The tag consists of a circuit board with integrated antenna, coin cell battery, and plastic enclosure.
The tag is designed to support attachment of a CR80 format ID badge. The tag is worn on a lanyard or clip to
enable location information for personnel.
2. Overview
Background
The 1104 Tag periodically transmits a short (~100 us) packet that is received by a network of PLUS Readers.
The Readers generate time of arrival data for the tag, and then send this data across an Ethernet network to a
server running the PLUS Location Software. The PLUS software uses the time of arrival from multiple
readers to determine an accurate location for the tag.
1104 Tag
Each packet transmitted by the 1104 tag consists of pulses transmitted at a 1 MHz pulse repetition frequency
(PRF). Data is transmitted using On-Off Keying (OOK) modulation, in which a pulse present in a given
timeslot = data value 1, and a missing pulse in the timeslot = data value 0. Each pulse has an RF center
frequency of 6.6 GHz..
The tag is ultrasonically welded in its plastic enclosure. There are no user inputs. It is not possible for the
user to change RF signal characteristics, PRF, or transmitted data content. The tag antenna is integrated onto
the circuit board inside the plastic enclosure and cannot be accessed, removed, or replaced.