Vaisala Optimus OPT100 - RS-485 Termination and Biasing; Figure 21 Location of the RS-485 Repeater Inside the DGA Monitor Cabinet; Figure 22 Location of DIP Switches on the RS-485 Repeater

4.7.1 RS-485 termination and biasing
Use of termination and bias resistors on the RS-485 line is configured using DIP switches on
the isolated RS-485 repeater. Change their configuration if necessary for your system. See
Table 8 (page 52).
Figure 21 Location of the RS-485 repeater inside the DGA monitor cabinet
There are two banks of DIP switches on the underside of the RS-485 repeater. Switches for
configuring the RS-485 output are at the front of the repeater, next to the grounding terminal
(green screw).
1
2
Figure 22 Location of DIP switches on the
RS-485 repeater
1 DIP switches for configuring the
RS-485 output.
2 DIP switches for configuring the
internal serial connection. Do not
change the settings of this bank.
Chapter 4 – Electrical installation
51