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CHAPTER 1
BOARD SETTINGS
The AD1200 and ADA1200 boards have jumper and switch
settings you can change if necessary for your application. The
1200 is factory-configured with the most often used settings. The
factory settings are listed and shown on a diagram in the beginning
of this chapter. Should you need to change these settings, use these
easy-to-follow instructions before you install the board in your
computer.
Note that by installing resistor packs at three locations around
the 8255 PPI and soldering jumpers in the desired locations in the
associated pads, you can configure the 16 available digital VO
lines to be pulled up or pulled down. This procedure is explained
near the end of this chapter.
Also note that by installing components at RL, R2, TR4, and
C36, you can add your own resistor configurable gain. The gain
circuiuy is described at the end of this chapter.
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