OMC-131 True wind display
Users’ manual
V1.14
Page 15
TDC-April-2017
2.2.14 Port 6 output
The OMC-131 provides an analogue output signal for wind speed and wind
direction. This is optional and not as standard available.
On the processor board (middle board) there are some jumper settings to select a current or
voltage output signal. There are three
jumpers that have to be set in the correct
position. In the drawing the selection for a
voltage output is set. In jumper field J2 de
position 2-3 is selected and in jumper field
J3 the jumper settings 1-3 and 2-4 are
selected.
To get a 4...20 mA output the jumpers must
be set as follows,
Jumper field J2 set 1-2
Jumper field J3 set 3-5 and 4-6
The potentiometers R18 and R19 are used
to set the range of the analogue output
signals.
Because the analogue output is optional
the IC,s needed for this output are not
installed originally. If the analogue output is
added after the display has left the factory
some IC,s needs to be installed in
the correct sockets. For the analogue output the following IC,s have to be installed, IC16, IC17,
IC18 and IC20. To select the correct output signal see above for the correct jumper settings.
