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CHAPTER 3: Installation
The Converter can draw operating power from either or
both pieces of connected equipment. In serial to parallel
mode, the parallel device’s input port will not usually be
configured so that it can furnish operating power. This
means that control of the Converter via the power
supply will depend only on control of the handshake
leads of the connected serial device. The Converter can
then be reset by dropping DTR and RTS briefly and
then raising them again. When self-test is selected,
raising DTR and RTS will cause the Converter to output
the self-test message to the parallel device (usually a
printer). Turning off the self-test function by turning
DIP-switch Position 6 off will terminate the self-test and
place the Converter in operating mode.
When the Converter is to be used in parallel to serial
mode, this is how to run the self-test:
1. Connect the Converter’s serial port to the serial
device (usually a printer). Use a straight-pinned
RS-232 cable.
2. Set up the word structure and direction of
conversion with the DIP switches.
3. Turn DIP-switch Position 6 on to start the self-test.