CS-GSM/GPRS Digital Transceiver Kits (including the COM110 modem)
An easy to use configuration tool called the Mobile Data Assistant is available for
download free of charge from
http://www.campbellsci.co.uk/downloads
With the
use of a programming cable this tool allows the modem to easily be reconfigured
for different functions or communication speeds.
The Campbell Scientific COM110 Modem is manufactured by Maestro Wireless
Solutions and is configured specifically for Campbell Scientific use. It is based
upon a Sierra Wireless (Wavecom) chipset as used previously by Campbell
Scientific Ltd. This modem runs a special software application that causes the
modem to enter a low power state on power up. It also automatically resets the
modem in the event of disconnection from the network and provides support for
GPRS connectivity for loggers which do not support TCP/IP communications
directly.
The current design of the COM110 modem will operate by default on GSM900
(900 MHz) or GSM1800 (1800 MHz) networks. If you wish to use the modem on
US GSM frequencies, please refer to Appendix C. Whenever possible a GSM900
network should be used as 1800 MHz networks (which includes the Orange and
EE networks in the UK) are designed with smaller cells because of the reduced
propagation range of higher frequency radio waves. Therefore GSM1800 phones
have a shorter range, which can cause more problems in areas of dubious signal
coverage.
2. Quick Start Guide – for GSM dial-up use
If you purchased the standard CS-GSM kit you will have been supplied with a
COM110 modem, an SC-WMI logger interface plus SC12 cable, mounting
bracket and an aerial. Other kits supplied with the SC105 or RS232 variants can
also be use for GSM dial-up use. All modem are preconfigured so they should
work “out of the box” for GSM dial-up use.
This section of the manual gives brief instructions and pointers to the rest of the
manual to enable you to setup the system and get running quickly.
1.
Make sure you have a data enabled SIM with the security PIN disabled. You
should have been notified of a telephone number specifically for data use
with the SIM. To insert the SIM card eject the card tray from the end of the
modem by pushing in the button with a small screwdriver or pen. Put the
SIM card in the small card tray taking care the angled corner of the card
matches the moulding in the tray. The gold plated contacts of the card should
be uppermost and remain so when the card tray is pushed back into the
modem.
2.
Connect the SC-WMI to the COM110 modem and the datalogger as shown
in Figure 1 (Section 4.2.1) of this manual. (If you are not using the SC-WMI
then connect the COM110 modem to the RS232 port of the datalogger.)
3.
Install the aerial supplied as high as possible on your mounting structure and
away from any vertical metal poles. Route the cable into the enclosure and
connect it to the aerial socket on the COM110 modem – this may involve use
of a coaxial adaptor (supplied if needed).
4.
Connect the power supply to the COM110 modem, by connecting the
red/black power lead either directly to the outlet of the power supply, if
powering the device continuously or to a suitable power switch – see Section
6.3 below. It is best to connect the power as close as possible to the battery
rather than to terminals on the datalogger if possible.
5.
Turn on the power to the datalogger and COM110 modem. The status LED
on the end of the package, near the SIM socket should come on continuously
initially. After a period of about 15 seconds the LED will start to flash
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