Xylem Global Access Radio Modem Software - Manual (Page 3)

Global Water
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• globalw.com
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I. Client Server Radio Network Basics
A radio network for Global Water data loggers has one or more loggers in the field
connected to client radio modems, and a single server radio modem connected to a
PC running the Global Access software.
In the following diagram, when the PC is running Global Access, it controls the
Server Radio which establishes communication with all client radios in range. Each
client radio, in turn, will awaken the logger device connected to it. All client radios
will remain active as long as the software remains connected so consider power
consumption in battery powered systems. This topic will be discussed in more detail
later in this manual.
Connection between the PC and the server radio is via a straight through serial cable
with female connections on both ends. The connection between the client radio and
the data logger requires a special cable. This cable is available from Global Water.
A diagram is also provided at the end of this manual.
II. Software Compatibility
This Global Access software requires a Global Water logger device with firmware
version 6 or higher. The version number can be found by connecting the logger to a
PC with the Global Logger II software provided with the logger, and selecting the
Firmware Version option from the Help menu.
The CD provided with the Global Access radio
modem software also includes a copy of
Global Logger II with a revision of 2.1.1 or