Xylem iCE3 GPRS Variant - Manual (Page 8)

GPRS iCE 3 , V1.30 User Guide
4 iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857 0810 Fax: +64 7 857 0811 Email: [email protected]
3 Installation
3.1 Removing / fitting the SIM card
Important! Ensure the iCE
3
is depowered before attempting to remove or fit the SIM card.
Using a narrow pointed object, depress the small yellow button to the right of the SIM card carrier. The
carrier will then be ejected. Fit the SIM card into the carrier and gently refit it to the device, pushing it home.
3.2 External Power Supply
The iCE
3
does not have an internal battery and so requires an external power supply. It will accept any
external regulated dc power source ranging from 5 to 32Vdc. Although the average current consumption is
very low, it is important that the power supply is capable of delivering the high current peaks that GSM/GPRS
modems are capable of drawing. To this end, iQuest recommend that a gel-cell type battery be used to
power the unit, with appropriate trickle charging from a suitable source. In normal operation, the host device
is likely to have a suitable power supply available.
3.3 Antenna Connection
The iCE
3
has a standard SMA antenna connector. For installations with a good GSM signal level, a small
right-angle ground plane independent stubby antenna will provide good results. Such antennae are
available from iQuest or other suppliers. This attaches directly to the SMA connector on the front of the unit.
In areas of marginal coverage, iQuest recommend using an external higher gain antenna.
3.4 Setting the Real Time Clock
If the iCE
3
will be used in scheduled connection mode (by using the AT^IACE=2 command), the internal
clock will need to be set correctly after installation on site and all other configuration has been completed.
This step is required because the internal clock is reset to a random time when the iCE
3
has been
depowered for any reason. Note that the scheduled connections will still work, they will just not be
synchronised to the correct time of day. Please refer to Section 5 for more details on using the Scheduled
Connection Mode.
Use the clock command in this format:
AT^ICLK=”yy/mm/dd,hh:mm:ss”
E.g. AT^ICLK=”07/06/15,08:55:00”
NOTE: The clock can also be read at any time by using the standard AT command AT+CCLK?
The reason for providing a special AT^ICLK command to set the clock is that it automatically synchronises
the scheduler in the iCE
3
software rather than just setting the hardware clock as using the AT+CCLK
command does.