© 2006 Delta-T Devices Ltd
Page 6
Introduction
The GSM Modem System provides battery powered GSM modem communications for
GP1 and DL6 loggers. Three power options are available:
Solar powered internal rechargeable lead-acid battery (
GSM-BX1/SP
)
Internal
lead-acid
battery with timer (
GSM-BX1/IB
)
Timer and cabling for an external lead-acid battery (
GSM-BX1/EB
).
The weatherproof box has an external connector for plugging in
GP1
or
DL6
loggers
via the GP1 network cabling system. At least one network cable is required.
Cable glands are provided for:
cable to external battery (
GSM-BX1/EB)
optional signal cable for triggering transmission of SMS text messages
optional external antenna cable.
Inside are mounting points for the modem, battery, and solar regulator option.
A DIN rail with terminal connectors and a fuse holder is provided. It also takes the
optional timer.
Antenna
If mobile phone reception is good the modem can be fitted with a stub antenna.
If reception is poor then the external antenna option will provide better reception.
Logger cabling
A GP1 network extension cable is required to connect a logger to the modem box.
A single GP1 logger may be connected via a type
GP1-EXT
extension cable.
Each DL6 logger requires at least a type
GP1/DL6-M8
cable.
Up to ten GP1 or DL6 loggers may be connected with suitable cabling.
These cables also distribute power from the Modem System battery to GP1 loggers.
See also:
Install Loggers
on page 19
Software
Once the Modem System is fully installed, each logger can be accessed, either from a
PC with a suitable telephone link, using the
DeltaLINK-PC
software, or a GSM-
enabled Pocket PC using
Pocket DeltaLINK
.
Modems supplied by us are pre-programmed - but you will have to purchase and
install your own
data-enabled
SIM card in the modem.
See also:
Getting Started
on page 10.
A modem configuration utility
GSMConfig
is installed on your PC with DeltaLINK.
It can be used to set up
text messaging
or to
configure
the modem or
test
the
modem.
The GSM modem can be configured to send a text message to a mobile phone, when
triggered by a logger control relay. It requires a 2-core cable from the logger to the
modem box DIN rail terminals.
