GSM modem iRZ MC52iWDT
User Manual
11
3.
Connection and Setting Up
3.1.
Connection
Before feeding the power supply you need to install the SIM card in the modem (the SIM card
must be enabled). To do this, you need:
•
to extract the SIM tray by pressing the SIM tray extract button (Fig. 2.4.1);
•
to install the SIM card into the SIM tray;
•
to insert the SIM tray with the SIM card into the modem.
No strong physical efforts must be applied while installing the SIM card.
Connect the GSM antenna to the antenna connector, as well as the commutating cable (RS232).
Feed power supply to the modem through the connector RJ11 (Fig. 2.4.2).
Note: GSM antenna, data cables and electrical power unit are not included in the complete set
configuration.
After the power supply feeding, registration occurs automatically, which is signaled by the green
indicator frequent flashing. After the registration is completed, the modem jumps to the operating
mode, the green indicator flashes less frequently (Table 2.6.1).
3.2.
Control, Restarting and Power Off
The modem control is performed by standard AT commands. For additional information and
support visit the manufacturer’s site –
www.radiofid.ru
.
Modem restarting can be carried out by the following ways:
•
by the program method through AT commands,
•
by eight jumpings of the DTR COM port line into passive state (DTR < 3V), duration of
pulses and the pauses between the pulses must lie within the range 100-500 ms,
•
by temporary power-off.
The modem can be powered off using the following ways:
•
by the program method, using AT commands (escape to the power standby mode);
•
directly by power-off.
•
signal EMERGOFF (emergency shutdown) - go and find a high level (from 5V to 27V) is
not less than 20 ms. Use EMERGOFF signal only when there is a serious problem when
more than 5 seconds, there is no response from the modem. The alarm EMERGOFF leads
to the loss of all data stored in volatile memory GSM module;
After power-off made by means of AT commands, the modem escapes to the power standby
mode (minimum power consumption). Escaping from the power standby mode is performed upon
the DTR of the COM port.
Every 24 hours is an absolute reset the modem. When restarting the GSM module in the modem off
for food. This function can not be disabled. Restart interval depends on the ambient temperature, and
can vary by 20-30 minutes.