Yamaha CL5 Reference Manual page 245

The following illustration shows how the signal that is output from the GPI PORT will change
in each fader mode when a fader is operated. In this example, UPSTROKE in the
THRESHOLD field is set to -60.00, and DOWNSTROKE is set to -∞. (This illustration shows
the case in which is selected as the polarity of the GPI OUT port. If the polarity is
the polarity of the output signal will be reversed.)
FADER
START
250 msec
FADER
STOP
FADER
TALLY
NOTE
At the high level, the output signal of the port will be open. If the receiving device requires high
level, take it from the +5V power supply pin. However in this case, the amount of current is limited;
For details, refer to the control I/O specification in the CL data list (at the end of this manual).
250 msec
,
242
Setup
Reference Manual