Supply power to the modem
The modem will need power before you can configure, test or use it.
Unpack and fit the internal battery or your own external battery.
For
wiring schematics
- see Wiring Diagrams on page 21
Use of the Timer
If using the Timer, temporarily set it ON, to provide
continuous power when setting up or testing the Siemens
GSM modem.
To turn the power on, toggle the
Manual
button on the
Timer until the red LED lights.
About the Timer
Battery power is wired via the Timer to provide intermittent
power to the modem.
Chose when and for how long you would like to
communicate with loggers,
e.g. once per day for one hour from 14:00.
See also Battery Life Considerations on page 20
For
wiring instructions
see the diagram on the side of the Timer.
For
programming instructions
see the separate
DIN rail Timer Instruction Manual.
Notes
:
The timer may also be used with the solar panel – possibly of value in regions where
sunlight is insufficient for your needs.
Text messaging cannot occur when modem power is off.
The timer is itself powered from the GSM modem battery but also has its own battery
back-up.
The power distribution at the DIN rail is also configured to provide continuous external
power for GP1 loggers. You may disable this if you like.
See:
How to disconnect the external power supply to GP1 loggers
on page 19
© 2006 Delta-T Devices Ltd
Page 12
