User Manual

© BASYS TECHNOLOGY LIMITED 1998
41176.DOC
Page 7 of 11
The copyright in this document is vested in Basys Technology Limited. This document is issued
only for the purpose for which it is supplied. And on the express terms that it is to be treated as
commercially confidential and that it may not be reproduced in whole or in part, or used or
disclosed to others for any purpose except as authorised in writing by this company.
6 TAG Transmission Timing and Operating Field Strength
6.1 PAT TAG
6.1.1 Operating Description
6.1.1.1 The
Portable Intelitag (PAT)
has been designed to allow the movement
of mobile assets within a controlled area or building, whilst denying or
monitoring the removal from, and re-entry of the assets into the area.
The PAT is normally detected when it enters the short-range zone of a
universal Reader; however it’s other transmissions, including tamper, will
be detected by a reader at long range.
6.1.1.2 The PAT Tag contains a shock sensor and miniature push button switch.
The shock sensor is used to detect movement and the switch is used to
detect removal (Tamper) of the TAG from an item it is adhered to. By
monitoring the sensor and the switch the TAG can determine what sort of
transmission should be transmitted.
6.1.2 Transmission Characteristics
6.1.2.1 Shock Triggered Transmission (automatic)
6.1.2.1.1 The transmission consists of 7 discrete frames of data at a repetition rate of
approximately 0.576s at an output field strength level conforming to paragraph
5.1.1.2.1 above. The total transmission time is approximately 4 seconds. The
transmissions will begin when the shock sensor is disturbed. After the
transmission has stopped the shock sensor will then be interrogated for new
shock events.
6.1.2.2 Tamper Triggered Transmission (automatic)
6.1.2.2.1 The transmission shall consist of 7 discrete frames of data at a repetition rate
of approximately 0.576s at an output field strength level described in
paragraph 5.1.1.2.1 above. The total transmission time is approximately four
seconds. This transmission will begin when the tamper switch is released.
When the tamper switch is re-closed the tamper transmission may be started
again on its release.
6.1.2.3 Routine report (periodic)
6.1.2.3.1 The transmission shall consist of 7 discrete frames of data at a repetition rate
of approximately 0.072s at an output field strength level described in
paragraph 5.1.1.2.2 above. The total transmission time will be 0.9s. This
transmission is repeated every 1 hour (
±
10 minutes).
6.1.2.3.2 The routine report facility may be disabled by placing switch 4 in the ON
position before the Tag is switched on.