INSTALLATION
DOC_DEV_IPL_User Guide_C
Page 33
11
Digital input and output
To check that the input and the output are
correctly wired :
In the menu, select
Diagnostics > Hardware > Input/Output
The status of the input is displayed and the
output can be switched ON or OFF.
12
Connecting the IPL to the ADSL line
Line length / signal level :
The IPL-A can be connected to an analogue line telephone line or an unbundled loop when the attenuation of
the reception signal is better than 63 dB
When the reception level is close to the limit, disconnections may occur.
In that situation, we recommend to ask to the ISP to setup the line with the RE-ADSL modulation which is
suited for long line and weak signal.
ADSL filter :
If the line must be used for analogue voice transmission simultaneously with ADSL transmission, it is
necessary to connect an ADSL filter.
Surge arrester :
The ADSL board of the IPL-A is protected very carefully against over voltage coming from the line.
However, when the line is exposed to lightning, we recommend to connect a surge arrester between the line
and the IPL router.
IPL router
Digital input
Non isolated
Digital output
isolated
polarized
OV
1
2
+
-
10 < V < 50 VDC
In
F+
F-
3
4
+
-
10 < V < 50 VDC
I < 0.1 A
Filter
Surge arrester
PSTN
Router