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GD-02. The GD-01 is a DIN-rail mounted modem with RS-232 interface in either a 9-pin D-sub or in a 5-pin screw connector. The GD-02 is also DIN rail mounted and has the same RS-232 interface as the GD-01 plus a RS-422/RS-485 interface in a 4-pin screw connector, 2 alarm inputs and one relay output.
GSM network. The GSM-modem can be used to link PLC:s, data loggers, security and surveillance systems or for data acquisition. The GSM services supported by the Westermo GD-modems are Circuit Switched Data, Fax, SMS and GPRS. A data communication link can be established to another GSM modem, to an analogue modem or to a digital ISDN adapter.
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Safety General: Before using this unit, read the manual completely, and make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this unit. Before installation, maintenance or modification work: Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging your body to a grounding point (e.g.
Specifications GSM services Circuit Switched Data Asynchronous transparent or non-transparent up to 14 400 bit/s MNP2 error correction and V.42 bis data compression Fax group 3 (Class 1 and Class 2) 160 characters text or PDU Point to point (MT/MO) Cell broadcast GPRS (optional) GPRS Class 2, Class B...
Antenna interface Frequency EGSM900: 880 – 915 and 925 – 960 MHz GSM1800: 1 710 – 1 785 and 1 805 – 1 880 MHz Connection 50 ohm impedance SMA male antenna connector Special factors If not the supplied antenna is used, check the “antenna information”...
Maintenance No maintenance is required, as long as the unit is used within the specified conditions. Installation Mounting /Removal Before mounting or removing the unit: Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging your body to a grounding point (e.g. use of wrist strap). Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains supply and all others electrical connections.
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Connections GD-01 SIM interface RS-232 interface, 5-position screw block Antenna interface RS-232 interface, 9-pos D-sub Power connection 12–36 V DC 6196-2211...
Power interface Connection Description 2-pos screw block, + Power 12–36 V DC 2-pos screw block, – Power 12–30 V DC RS-232 interface, screw connector Connection in GD-01 Connection in GD-02 Direction Description 5-pos screw connector 9-pos screw connector – Signal ground...
Antenna interface Connection Direction Description SMA male connector – 2W @ 900 MHz, 1W @ 1 800 MHz SIM card interface Connection Direction Description SIM card – Supported SIM card voltage: 3 volt It is necessary to have a GSM subscription from a network operator. They will provide you with a SIM card that should be mounted in the SIM card holder.
LED indications LED on Correct internal power LED off No internal power LED off Device switched off - Not ready LED on Device switched on Connecting to network LED flashing slowly Device switched on Idle mode (registered on network) LED flashing rapidly Device switched on Transmission mode LED blinking LED showing data received from the local RS-232/V24 port...
Quick Start guide The serial interface is default configured to: • 9600 bit/s, 8 databits, no parity and 1 stop bit. (refer to AT+IPR and AT+ICF commands) • RTS / CTS flowcontrol enabled (please refer to AT+IFC command) • DTR signal must be active from the DTE (please refer to AT&Dn command) Follow the steps below to get the unit up and running as quick as possible: •...
Configuration The GD-01 can be configured via AT-commands on the service interface. Short form list of AT commands S-registers Description Direct +CSAS &W &F Default Save value Ring signals before auto answer General commands Command Description Direct +CSAS &W &F...
Data commands Command Description Direct +CSAS &W &F Default Save value +CBST Bearer type selection – – 0,0,1 +FCLASS Select mode – – – – – Service reporting control – – +CRC Cellular result codes – – +ILRR DTE–DCE local rate reporting –...
AT commands for GPRS Command Description Direct +CSAS &W &F Default Save value +CGDCONT Define PDP Context – – – – – +CGQREQ Requested Quality of Service Profile – – – – – +CGQMIN (Minimum acceptable) Quality of Service Profile –...
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