Vaisala CL31 - Data Line RS-485 Connection; Figure 13 Data Line RS-485 Connection

Chapter 3 _______________________________________________________________ Installation
VAISALA_______________________________________________________________________ 37
Data Line RS-485 Connection
0906-077
Figure 13 Data Line RS-485 Connection
The RS-485 connection is provided with a termination. If the ceilometer
is connected to the end of a long line, it may be advantageous to connect
the two signals marked "termination" as shown; this can improve data
transmission speed, quality, and reliability.
Default Settings for the Data Line RS-485 Connection
Bit rate 19200
Data bits 8
Stop bits 1
Parity None