Vaisala WAA151 Installation Manual Page 121

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Chapter 4 ________________________________________________________________ Installation
VAISALA _______________________________________________________________________ 119
0201-049
Figure 116 DSI486 Default Jumper Locations
0201-050
Figure 117 DSI486 Wiring Diagram for RS-485 and RS-232
Figure 117 above provides a schematic wiring diagram for the
combination of the RS-485 and RS-232 connection. The correct
jumper settings for the channel B are listed in Table 21 below.
Table 21 The Jumper Settings for Channel B in the RS-232
Mode
Jumper Connected
Pins
Function
X3 2-3
1-4X6
2-5
Sets the RS-232 mode active for the channel B.
X5 None The line terminating resistor is not in use at all.
The DSI486 module provides also SDI-12 connection. The SDI-12
line uses one wire for data and is limited to a maximum length of 60
meters. Figure 118 on page 120 provides a schematic wiring diagram
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