iRZ MC55iT User manual

iRZ MC55iT
GPRS class 10
GSM modem
USER MANUAL

GSM modem iRZ MC55iT
User Manual
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Contents
1. Safety Requirements ............................................................................................................................................ 3
2. General Information ............................................................................................................................................. 4
2.1. Purpose of the Device ......................................................................................................................................... 4
3.1. Configuration.............................................................................................................................................. 4
3.2. Parameters .................................................................................................................................................. 4
3.3. Exterior Appearance.................................................................................................................................... 6
3.4. Interfaces .................................................................................................................................................... 7
3.5. Modem Status Indication........................................................................................................................... 10
3. Connection and Setting Up................................................................................................................................. 11
3.1. Connection................................................................................................................................................ 11
3.2. Control, Restarting and Power Off............................................................................................................. 11

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1. Safety Requirements
Restrictions for the usage of the device in the vicinity of other electronic devices:
·turn off the modem in hospitals or in the vicinity of medical equipment (e.g.
cardiostimulators, hearing aids). It can cause interference for medical equipment;
·turn off the modem in aircrafts. Take measures against accidental activation;
·turn off the modem in the vicinity of gas-filling stations, chemical enterprises, blasting
work places. It can cause interference to technical devices;
·at a short range the modem may cause harmful interference to TV and radio receivers.
Prevent the modem from dust and moisture.
Improper use deprives you of all warranty claims.

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2. General Information
2.1. Purpose of the Device
The modem iRZ MC55iT is a structurally accomplished GSM modem designed for reception
and transmission of data, text messages and telecopies. It is excellently adjusted both for mobile
Internet Access and for industrial applications — telemetry, wireless data collection from sensors,
remote surveillance, monitoring and signaling.
The modem is assembled based on the GSM module MC55i Cinterion. The control is performed
by means of standard AT commands. The modem is equipped with light-emitting diodes (LEDs)
enabling to monitor the status of connection.
3.1. Configuration
Complete set of the GSM modem IRZ MC55iT:
·modem iRZ MC55iT,
·label,
·factory box.
3.2. Parameters
Basic parameters:
·frequency ranges: GSM 850/900/1800/1900 mHz;
·power output:
o2W (class 4 for EGSM900),
o1W (class 1 for GSM1800),
·GPRS class 10;
·TCP/IP suit available through AT commands;
·MC class B;
·CSD up to 14.4 kbps;
·USSD;
·SMS;
·voice transmission;
·fax group 3: class 1.
Electric power supply:
·power supply voltage from 9 to 25 V;
·absorbed current not more than:
owith power supply voltage +12 V – 200mA;
owith power supply voltage +24 V – 100mA.

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Physical parameters:
·size not more than 69х74х33 mm,
·weight not more than 100 g.,
·operating-temperature range from -20°Сto +65°С,
·storage temperature range from -40°Сto +85°С.
Interfaces:
·connector RJ11 for power supply connection,
·connector RJ11 for audio interface connection,
·connector DB9 for connection of the data cable RS-232,
·connector FME for GSM antenna connection.

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3.3. Exterior Appearance
The modem MC55iT is a compact device completed in a plastic housing. The external
appearance is represented on Fig.2.4.1 and Fig.2.4.2.
Fig.2.4.1 Front view.
Fig.2.4.2 Back view.
On the figures the digits signify the following:
1. connector RJ11 for audio interface connection,
2. network LED indicator,
3. SIM card tray,
4. SIM card tray extracting button,
5. connector DB9 for connection of the data cable RS232,
6. connector RJ11 for power supply connection
7. connector FME for GSM antenna connection.
1
2
3
4
5
6
7

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3.4. Interfaces
3.5.1. Connector DB9 (RS232)
The connector is used for connection to the control device, exchange protocol RS232.
Fig.2.5.1 Connector DB9
Table 2.5.1 Purpose of the connector pins.
Pin Signal Direction Purpose
1
DCD
Modem
-
PC
Availability of carrier wave
2RXD Modem-PC Data reception
3
TXD
PC
-
Modem
Data transmission
4DTR PC-Modem Availability of data receiver
5GND general System housing
6DSR Modem-PC Readiness of data
7RTS PC-Modem Request for transmission
8CTS Modem-PC Availability of transmission
9RI Modem-PC Call signal
1
3
2
4
5
6
7
8
9

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3.5.2. Power supply connector RJ11
The connector is used for connection of electric power supply.
Fig.2.5.2 Connector RJ11
Table 2.5.2 Purpose of power supply connector pins.
Contact Signal Purpose
1+ 12V Positive pole of DC supply voltage. Protected with a fuse and the
protection circuit against voltage-surge (with voltage infeed rate
more than 30V) and incorrect polarity.
2not used
3 not used
4 not used
5 not used
6GND System housing
1
2
3
4
5
6

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3.5.3. Audio Interface Connector RJ11
Fig.2.5.3 Connector RJ11
Table 2.5.2 Purpose of the power supply connector pins.
Contact Signal Purpose
1not used
2MICP microphone input and microfone power supply not inverse
3SPKP phone output not inverse
4SPKN phone output inverse
5MICN phone input inverse
6not used
1
2
3
4
5
6

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3.5. Modem Status Indication
LED indication is provided in the modem for connection status indication.
Table 2.6.1 Connection status indication
Indication mode Operation mode
Turned off Modem is turned off or there is an emergency situation
600 ms on / 600 ms
off
Modem is not registered in the network
75 ms on / 3 s off Modem is registered in the network
75 ms on / 75 ms off /
75 ms on / 3 s off
GPRS connection is installed
500 ms on / 50 ms off Data transmission is underway

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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.
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.