PCM-2 Manual.pdf - Voss Associates

Section 11
Front Panel Board
General Description
Designed to be a general purpose control panel, this board provides many
commonly-used functions required for control of typical instruments. A variety of
input, output and communications ports are included, along with memory and
computing capabilities. The PCM-2 "Front Panel Board" is a slave to the
instrument's main computer. In the PCM-2, it performs the following functions:
Input of all switches such as the body position sensors, gas pressure switches
and front panel keypad.
Control of the countdown clocks, body position indicators and LED "traffic
lights. "
Control of the optional badge reader.
Serial communications to and from an optional host computer.
Non-volatile storage of instrument setup parameters.
Non-volatile storage of measurement results, if enabled, for transfer to the
host computer.
While it is beyond the scope of this document to provide step-by-step
troubleshooting procedures for this board, the following information should be of
use in diagnosing and localizing failures. A basic familiarity with microprocessor
circuits is assumed.
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