Studio Technologies 50 2000 - Manual (Page 40)

Issue 4, July 2000 Model 50/51 User Guide
Page 40 Studio Technologies, Inc.
Appendix A
Controlling the Model 50
The Model 50 Central Controller uses MIDI
system-exclusive messages to control all
functions. The Model 51 Control Console
is programmed to generate a subset of
what the Model 50 is capable of doing.
By using standard MIDI messages, the
Model 50 can be used for a wide range
of special applications. Any device that
can be programmed to send system-
exclusive MIDI messages can be used
to control the Model 50.
Note that the 5-pin connector on the
Model 50’s back panel is wired somewhat
differently from a standard MIDI input.
While pins 4 and 5 meet the MIDI stan-
dard, the three remaining pins are imple-
mented for use by the Model 51. Pin 1
supplies +15Vdc power, pin 2 is shield
(ground), and pin 3 is communications
audio input.
If you’re connecting your own controller,
such as a computer’s MIDI interface, you
might be concerned about the DC power
on pin 1. Because the MIDI standard
doesn’t use this pin, it is highly unlikely
that it will be connected inside your con-
troller, so there’s little chance of the DC
causing damage. To be safe, you can use
a MIDI cable with only two or three wires
implemented.
The following pages provide a detailed list
of all Model 50 system-exclusive MIDI
messages.