Euro Tech (Far East) Ltd.--

The GDW-11 is a modem designed to allow connection of legacy serial equipment over a GSM/GPRS network.
The AT command driven modem operates over the GSM/GPRS networks providing speed up to 14.4 kbit/s on GSM or 85.6 kbit/s when using GPRS.

The GDW-11 is designed for use in heavy duty industrial applications. The wide power range, galvanic isolation, guarantees communication in the worst environments.

Only industrial grade components are used which gives the GDW-11 an MTBF of 1,100,000 hours and ensures a long service life. A wide operating temperature range of –25 to +70°C (–13 to +158°F) is achieved with no moving parts.

The GDW-11 has been tested both by Westermo and external test houses to meet many EMC, isolation, vibration and shock standards, all to the highest levels suitable for heavy industrial environments and rail trackside applications.

The modem is simple to configure both by DIP switches as well as by the Westermo GD-tool software; standard commands can easily be entered, and saved configurations downloaded. RS-232 connections can be made using screw connections as well as the standard D-sub. The modem is designed to be connected to devices with no ability to control dialing so special functions like data dialing and DTR dialing are provided to enable these devices to automatically establish connections.

GDW-11

Product description
Status	Active
Article number	3615-0030
Ports	1 x 300 bit/s to 115.2 kbit/s, RS-232. 1 x SIM slot.
Description	GSM modem, GSM / GPRS
Warranty period	5 Years
Standard compliance
R&TTE	Article 3.1b EN 301 489-1, EN 301 489-7 Article 3.2 EN 301 489-1, EN 301 419-1, EN 301 511
Reliability prediction
Service life, operating	Operating, 10 year
EMC (Electromagnetic Compatibility)
EN 61000-6-2	Immunity industrial environments
EN 55024	Immunity IT equipment
EN 61000-6-3	Emission residential environments
FCC part 15	Class B
EN 50121-4	Railway signalling and telecommunications apparatus
IEC 62236-4	Railway signalling and telecommunications apparatus
EMC specifications
EN 61000-4-2, ESD	Enclosure contact, ± 6 kV Enclosure air, ± 8 kV
IEC 61000-4-3, RF field AM modulated	Enclosure, 20 V/m 80% AM (1 kHz), 80 – 2000 MHz
ENV 50204, RF field 900 MHz	Enclosure, 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
EN 61000-4-4, fast transients	Signal ports, ± 2 kV Power ports, ± 2 kV
EN 61000-4-5, surge	Signal ports unbalanced, ± 2 kV line to earth, ± 2 kV line to line Signal ports balanced, ± 2 kV line to earth, ± 1 kV line to line Power ports, ± 2 kV line to earth, ± 2 kV line to line
EN 61000-4-6, conducted RF immunity	Signal ports, 10 V 80% AM (1 kHz), 0.15 – 230 MHz Power ports, 10 V 80% AM (1 kHz), 0.15 – 230 MHz
EN 61000-4-8, power frequency magnetic field	Enclosure, 100 A/m, 50 Hz, 16.7 Hz & 0 Hz
EN 61000-4-9, pulsed magnetic field	Enclosure, 1000 A/m, 6.4 / 16 ms 5 pos/5neg pulse in XYZ direction
EN 61000-4-11, Voltage dips and interruption	AC power ports: 10 & 5 000 ms, interruption 10 & 500 ms, 30% reduction 100 & 1 000 ms, 60% reduction
EN 61000-4-16, Mains freq. 50 Hz	Signal ports, 100 V 50 Hz line to earth
SS 436 15 03, Mains freq. 50 Hz	Signal ports, 250 V 50 Hz line to line
EN 61000-4-29, voltage dips and interruption	DC power ports: 10 & 100 ms, interruption 10 ms, 30% reduction 10 ms, 60% reduction +20% above & –20% below rated voltage
EN 55022, radiated RF emission	Enclosure, class B
FCC part 15, radiated RF emission	Enclosure, class B
EN 55022, conducted emission	AC power ports, class B DC power ports, class B
FCC part 15, conducted emission	AC power ports, class B
Safety
Safety	EN 60950, IT equipment
EN 60950-1, dielectric strength	Signal port to other isolated ports, 2 kVrms 50 Hz 1 min Power port to other isolated ports, 3 kVrms 50 Hz 1 min, 2 kVrms 50 Hz 1 min (@ rated power <60 V)
Climatic
Temperature, operating	–25 to +50°C (–13 to +122°F)
Temperature, storage	–30 to +85°C (–22 to +185°F)
Humidity, operating	5 to 95% relative humidity
Humidity, storage	5 to 95% relative humidity
Enclosure
Enclosure	UL 94, PC / ABS, flammability class V-1
Dimensions (W x H x D)	34 x 123 x 121 mm (1.33 x 4.84 x 4.76)
Weight	0.2 kg
Degree of protection	IP 21
Cooling	Convection
Mounting	Horizontal on 35 mm DIN-rail
Mechanical
IEC 60068-2-6, vibration	Operating 7.5 mm, 5 – 8 Hz 2 g, 8 – 500 Hz
IEC-60068-2-27, shock	Operating, 15 g, 11 ms
Interface specifications, power
Rated voltage	12 to 48 VDC
Operating voltage	10 to 60 VDC
Rated current	350 mA @ 12 VDC 150 mA @ 24 VDC 75 mA @ 48 VDC
Rated frequency	DC
Inrush current	0.05A2s
Startup current	0.75A peak
Polarity	Reverse polarity protected
Connection	Detachable screw terminal
Connector size	0.2 – 2.5 mm2 (AWG 24-12)
Isolation to	All other ports 3 kVrms 50 Hz 1 min
Shielded cable	Not required
Interface specifications, RS-232
Electrical specification	RS-232 V.24
Data rate	300 bit/s – 115.2 kbit/s
Data format	7 or 8 data bits, Odd, even or no parity, 1 or 2 stop bits
Protocol	Transparent
Retiming	Yes
Transmission range	15 m / 49 ft
Isolation to	Power port 3 kVrms 50 Hz 1 min
Connection	9-pin D-sub female (DCE) and 5 pos Detachable screw terminal (DCE)
Connector size	Detachable screw terminal 0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cable	Not required
Conductive housing	Isolated to all other circuits
Interface specifications, Antenna
Frequency bands	GSM900 TX 880 – 915 and RX 925 – 960 MHz GSM1800 TX 1710 – 1785 and RX 1805 – 1880 MHz
Data rate	CSD: up to 14.4 kbit/s, GPRS: up to 85.6 kbit/s
Connection	SMA female, impedance: 50 ohm
Isolation to	Power port 3 kVrms 50 Hz 1 min
Interface specification, SIM
Electrical specification	3 volts SIM supported
Isolation to	Power port 3 kVrms 50 Hz 1 min