TIAMIS-800 wireless radio transceiver
User Manual. Ver. 1.3a
DOUM0003AA
Page 8 of 35
1. Introduction
The Tiamis-800 is a software-defined radio transceiver. When loaded with firmware
1106.i and prior, it supports frequency hopping spread spectrum operation in the 902-928
MHz license free frequency band.
The Tiamis-800 provides the end user with a flexible, reliable, secure data
communication solution. With its fast frequency hopping capability the Tiamis-800 easily
avoids interference even in the most complex environments.
The Tiamis-800 transceiver is aimed to be used in applications such as remote data
gathering and control, GPS based networks, SCADA systems, remote monitoring, and as
a wireless bridge.
2. Quick Start
When purchased, the Lexycom wireless data transceivers are shipped from the factory
pre-configured to operate in the Slave mode of operation with the acknowledgement
turned off. The settings, however, can be changed by the user at any time by using
“Configuration Program” supplied with the transceivers.
Using the same program, if needed, the settings on the transceivers can be changed back
to the factory default.
The transceiver’s data port is preset for RS232 baud rate of 115.2 kb/s. Its diagnostics
port is set to operate at 57.6 kb/s (fixed settings, cannot be changed by the user).
When used for RS232 data transfers, the transceiver functions as a null modem cable.
Therefore, if the Tiamis-800 is to be used to replace a straight-through RS232
connection, then a null modem cable must be placed between the transceiver and the
DCE instrument to which it is connected.
To establish communications between a pair of Lexycom Wireless Data Transceivers just
received from the factory:
1. Set the RS232 baud rate on each transceiver to match the baud rate of the instrument to
which it is connected. Please note that the baud rate settings do not have to be the same
on each transceiver in the network.
