
Pin 2 Rx \ SCL (I
2
C clock)
Pin
3 Tx \ SDA (I
2
C data)
Pin 5 GND
Pin
9 PWR (Must solder Power Through DB-
9 Jumper. See table 1 on page 12 for
power requirements.)
Figure 14: RS-232 Pin out
2.1.1 Power Through DB-9 Jumper
In order to provide power through pin 9 of the DB-9 Connector you must place a solder jumper on the
Power through DB-9 Jumper pictured in figure 15 below. The VFD2041 allows all voltage models to use the
power through DB-9 option, see table 1 on page 12 for display module voltage requirements.
Matrix Orbital VFD2041 10
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