Input Commands - Mitsubishi Electric VS-45605 Technical Training Manual

Basic Operating Requirements
The basic operating requirements for the µPC
are typical. They are listed below and illus-
trated in Figure 6-1.
• A DC Power Supply
• Ground returns
• A Clock signal to time all operations.
• Reset circuit to set the µPC to its
nominal starting point.

Input Commands

The user input command circuitry is
shown in Figure 6-2. The front panel
buttons are connected in a two column
resistive ladder array. Each column
connects to a Key input on the µPC.
When a front panel button is pressed,
the change in voltage at the Key input
informs the µPC what command has
been entered.
Remote Control commands are re-
ceived by the Remote Preamp, ampli-
fied and applied to the RMC input of
the µPC. The Remote commands are
a serial data stream that is decoded in
the µPC.
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