ETIC IPL-3G, User Manual

Page: 27 / 100

INSTALLATION
UMTS GPRS EDGE router ref. IPL-3G User guide ref. 9019409-01
Page 27
9 RS485 interface
The RS485 serial interface is provided on the front panel 2 pins
screw-block.
Polarisation resistors
1 Kohm bus polarisation resistors are included inside the product.
RS485 line adaptation
For a several meters long connection over the RS485 local interface, it is not necessary to adapt the RS485 line. For a longer
distance, connect a 120 Ohm resistor at each end of the line.
10
Digital input and output
Digital output
:
Max. voltage : 48 VDC
Max. current : 500 mA
Digital input :
Maximum voltage : 20 VDC
11 Connecting the antenna
If the cabinet in which the router has to be installed is made of metal, the antenna has to be installed outside the cabinet; for
instance on its top.
The antenna must be ordered separately; the models below are available :
•
90 ° antenna (ANT210 ).
•
Magnet mount antenna (ANT211)
•
Roof antenna (ANT212)
-
1K 1K
+
SW1
B(+) A(-) RS485
F+ F-
7 8
Digital output
+
-
V < 48 VDC
I < 0,5 A
3V3 In
5
6
Digital input
I max = 0,5 A
V
IPL router