Vaisala WAA151 Installation Manual Page 127

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Chapter 4 ________________________________________________________________ Installation
VAISALA _______________________________________________________________________ 125
0202-019
Figure 124 QST101 Connectors
4. Connect the data cable to the data port of QST101 (14-pin flat
cable connector, that is, number 1 in Figure 124 above) and to
the COM1 or COM2 port of the logger. You have to install the
DSU232 communication module to the corresponding
communication port of the logger. For installation instructions,
see section Communication Modules on page 115.
5. Connect the power cable to the power connector of QST101 (2-
pin white connector, number 2 in Figure 124 above) and to 12V
power supply pins of the terminal strip. The red wire is for +12V
and black wire is for 0V. Connector to the QST101 can be
inserted only in one way.
CAUTION
It is important to connect the polarity correctly. The red wire is for
+12V and the black wire is for 0V.
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