Siemens SIMATIC NET SINAUT ST7 System Manual page 70

Station control system
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Introduction to the SINAUT ST7 system
2.5 Mobile wireless components
Technical specifications of the MD740-1 GPRS modem
MD740-1
General
Interfaces
Power supply
Current consumption
Power loss
Permitted ambient conditions
Construction
Installation
Degree of protection
GSM/GPRS
Frequency ranges
Transmit output power
GPRS multislot class
GPRS coding methods
GPRS connection establishment
Virtual Private Network (VPN)
Protocol
Encryption
Internet Key Exchange (IKE)
Authentication
70
Application interface
Service interface
Antenna connector
Connection to power supply
with existing GPRS connection and data
exchange
Operating temperature
Transport/storage temperature
Relative humidity
Design
Materials
Dimensions (W x H x D) in mm
Weight
850 / 900 MHz
1800 MHz
RJ-45 female (10/100 Mbps, TP,
autocrossover)
9-pin D-sub female connector
(with gender changer pin)
SMA female connector,
nominal impedance: 50 ohms
4-pin screw terminal
18 - 30 V DC (24 V DC nominal)
I
: 320 mA at 24 V (I
n
burst
4.62 ms burst repetition rate
typically 8.0 W
0 °C through +50 °C
-25 °C through +85 °C
Max. 95 % at +25 °C
DIN rail housing
Plastic
45 x 99 x 114
Approx. 280 g
Snap onto 35 mm standard rail
IP20
800, 900, 1800 and 1900 MHz
Max. 2 W
Max. 1 W
10
up to 2 uplinks (13.4 - 27 Kbps),
up to 4 downlinks (40 - 54 Kbps),
max. 5 slots
CS-1, CS-2, CS-3, CS-4
Automatic when power supply turned on
Ipsec (tunnel and transport mode)
Ipsec DES with 56 bits,
Ipsec 3DES with 168 bits,
Ipsec AES with 128, 192 and 256 bits
with main and quick mode
Pre-Shared Key (PSK),
X.509v3 certificates
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
: 800 mA)

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