Siemens SINAUT ST7 System Manual page 45

Technical specifications of the MD741-1 GPRS modem
MD741-1
General
Interfaces
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Power supply
Current consumption
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Power loss
Permitted ambient conditions
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Construction
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Installation
Degree of protection
GSM/GPRS
Frequency ranges
Transmit output power (for 8-PSK)
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GPRS multislot class
EGPRS multislot class
GPRS coding methods
GPRS connection establishment
Virtual Private Network (VPN)
Station control system
System Manual, 07/2009, C79000-G8976-C178-07
Application interface
Service interface
Antenna connector
Connection to power supply
on an existing GPRS connection with data
exchange and GSM900 power level 10
(transmit power: 23 dBm)
Operating temperature
Transport/storage temperature
Relative humidity
Design
Materials
Dimensions (W x H x D) in mm
Weight
850 / 900 MHz
1800 / 1900 MHz
Introduction to the SINAUT ST7 system
1.5 Mobile wireless components
RJ-45 female (10/100 Mbps, TP,
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autocrossover)
USB socket type A
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SMA female connector,
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nominal impedance: 50 ohms
4-pin screw terminal
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12 - 30 V DC (24 V DC nominal)
I : 147 mA at 24 V (I
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n burst
4.62 ms burst repetition rate
typically 4.0 W at 24 V
-20°C through +60°C
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-40°C through +70°C
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Max. 95 % at +25°C
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DIN rail housing
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Plastic
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45 x 99 x 114
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Approx. 280 g
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Snap onto 35 mm standard rail
IP20
800, 900, 1800 and 1900 MHz
+27 dBm (±3 dB)
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+26 dBm (+3 / -4 dB)
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Class 12...8:
1...4 downlinks
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1...4 uplinks
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max. 5 slots
Class 12...8:
1...4 downlinks
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1...4 uplinks
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max. 5 slots
CS-1, CS-2, CS-3, CS-4
Automatic when power supply turned on
: 550 mA)
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