SATELLINE-3AS and SATELLINE-3ASd
45
7.2.2
RS-422 Wiring
PORT COM2 RS-422
PORT COM2 RS-422
With a longer line lengths the receive line end should be terminated with a resistor (100 -120
ohm).
7.2.3
RS-485 Wiring
PORT COM2 RS-485
PORT COM2 RS-485
FUSE 630 mA slow
Data negative
Data positive
DTR
+Vb
GND
2
3
4
1
15
8
+Vb GND
RADIO MODEM
A’
A
B
5
Optional
resistor
B’
If there is only one device on each end of the line, you should terminate them with a 100 – 120
ohm resistor between the positive and the negative data line. However this is not complimentary
with short line lengths (1 - 10 meters depending on the cable and the bitrate).
7.2.4
Power supply
The range of voltage is 9 - 30 V
DC
. Connect the power cables to a power supply with a power
rating of at least 1 A. The operating voltage of the positive pole of the D 15 connector is
connected to the pin 15 of the D connector and to the negative pole 8. The DTR line in position
"1" can be used as an ON/STAND-BY switch. In this case the logical state "1" (+5...+30 V)
corresponds to ON and "0" (0 V... -12 V) to STAND-BY.
TD negative
TD positive
RD negative
RD positive
DTR
+Vb
GND
2
3
4
1
15
8
+Vb GND
RADIO MODEM
A’
A
B
5
FUSE 630 mA slow
B’
RADIO MODEM
