Setting the Line Modulation
You can set the modulation on the line using the jumpers X36 and X37. The modulation is set to TC-PAM4
(Trellis-Coded Pulse Amplitude Modulation) ex works. If you change the modulation, you can reduce the
symbol rate (frequency spectrum) on the line. This gives you the option of adapting the CC-CO devices to
fewer suitable cables or slightly increasing the range.
i
i
NOTE
The same modulation type must be set on the main unit and the secondary unit. The disturbance sensitivity
can be reduced for a higher TC-PAM value.
Table 3-2
Jumpers
Modulation
X37
X36
TC-PAM32
1-2
1-2
TC-PAM16
1-2
2-3
TC-PAM8
2-3
1-2
TC-PAM4
6
2-3
2-3
[dw_jumper_X37_X36, 1, --_--]
Figure 3-4
Setting the Modulation
3.4
6
Factory setting
Application Examples and Configuration
3.4 Setting the Line Modulation
Accessories, Communication Converter - Copper/Synchronous Interface, Manual
23
C53000-B1174-C190-1, Edition 01.2022
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