Installing and putting a SINAUT modem into operation
6.3 GPRS/GSM wireless modem MD740-1
SINAUT ST7 Station control system - System Manual
234
System Manual, 05/2007, C79000-G8976-C178-06
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
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.
Connecting to the power supply
9
9
Figure 6-3
Connector for 24 V DC power supply
The screw terminals at the top are for connecting the power supply source:
● 24 V DC (nominal), I
typ
360 mA
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
Dimensions
W x H x D (mm)
45 x 99 x 114
Depth with connected antenna / Ethernet cable (mm)
approx. 170