User Manual

Chapter 1 Introduction
- 12 - Hi-G-Tek Ltd. Micro electro nic s & A sset Tra cking Techno logy
include the vehicle ID, container and invoice numbers, cargo description,
etc. It is also useful for reading the DataSeal's event records, and to reset
the DataSeal for a new use (an operation called "Set").
Note:
The low frequency protocol, the DataTerminal, DataPort and
MicroDataReader devices are not covered by this manual.
The high frequency protocol is used by devices of the DataReader family of
products. This family includes the DataReader itself, which connects to a
controlling computer (normally a PC) through an RS-232/485 interface; the
TrackingDataReader which contains a GPS and GSM modules and is
usually installed on a truck; and the SmartDataReader which contains an
embedded PC and connects to an Ethernet network. This manual covers
only the Dat aReader device it self. The high frequency protocol is useful for
monitoring the presence and status of one or more DataSeals constantly or
periodically. It is capable of communicating with multiple DataSeals
simultaneously and even with DataSeals in high speed motion, for
example: on a train.
The DataSeal and DataReader devices are capable of communicating in
distances of up to 30 meters, and in some cases even more.
The use of the high frequency/long range protocol enables applications
such as: tracking and sealing verification of containers in transit; protection
of containers in storage; remote automatic data collection from secured
cargoes as they pass through check points, etc.
The DataReader is able to detect which DataSeals are present in its area,
and their statuses (open/close, tampered, etc). It can also receive messages
from DataSeals in real-time, for example when the DataSeal is tampered.
These types of messages that the DataSeal transmits are called "Burst
Messages".