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Installing and putting a SINAUT modem into operation
6.3 GPRS/GSM wireless modem MD740-1
Antenna connector
The jack for connecting an antenna cable with an SMA connector is located at the top of the
front panel.
● Impedance: Approx. 50 ohms
Connecting to the power supply
Figure 6-3
The screw terminals at the top are for connecting the power supply source:
● 24 V DC (nominal), I
The two screw terminals on the left (24 V) are connected internally (see Figure). The two
screw terminals on the right (0 V) are connected internally.
Installation on a 35 mm standard rail
The SINAUT MD740-1 is intended for installation on DIN rails complying with DIN EN 50022.
There is a suitable fastener on the rear of the device.
Table 6-9
Dimensions of the MD740-1 modem
MD740-1
W x H x D (mm)
Depth with connected antenna / Ethernet cable (mm)
234
CAUTION
Only use antennas from the range of accessories SINAUT Telecontrol intended for the
MD740-1 modem. Other antennas may have detrimental effects on the device
characteristics and may even cause damage.
Connector for 24 V DC power supply
360 mA
typ
Dimensions
45 x 99 x 114
approx. 170
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
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