Mounting Instructions

Install internal components
Call station interface (RS485) PTO2008-A1
6
110 | 173
A6V10430579_en--_b
6.22.4 Connect 'PACE-Bus' (RS485)
The PTO2008-A1 provides one 'PACE-Bus' (RS485) connector ('X2').
'PACE-Bus' (RS485) connector - 'X2'
Pin
Description
Remark
1
D-
RS485 data -
2
D+
RS485 data +
3
GND
GND reference voltage
4
-
Not used
Table 67: PTO2008-A1 'PACE-Bus' (RS485) connector - 'X2'
6.22.5 Connect analog audio input
The PTO2008-A1 provides one connector ('X3') for an analog audio input
connected to the call station microphone output.
Analog audio input connector - 'X3'
Pin
Description
Remark
1
SI+
Audio in +
2
GND
GND reference voltage
3
SI-
Audio in -
Table 68: PTO2008-A1 analog audio input connector - 'X3'
6.22.6 Connect analog audio output
The PTO2008-A1 provides one connector ('X4') for an analog audio output
connected to the call station speaker.
Analog audio output connector - 'X4'
Pin
Description
Remark
1
SO+
Audio out +
2
GND
GND reference voltage
3
SO-
Audio out -
Table 69: PTO2008-A1 analog audio output connector - 'X4'