Discontinued - See the Q174 MIDI Interface
The Q104 MIDI Interface will accept a MIDI signal from a keyboard or other MIDI device
and creates a control voltage for pitch, a control voltage for velocity, a gate signal, and a trigger signal.
These signals can be used to control oscillators, filters, and to trigger envelope generators and sequencers.
If you need a complete keyboard system with the Q104 functionality, please
see our QKB15S for details.
Controls and Connectors
MIDI In Connector
Receives MIDI channel 1 commands.
Gate Output Connector & LED
Gate Output signal. Stays on (5V) as long as a note is on.
Trigger Output Connector & LED
Short pulse at the beginning of a note on.
Pitch Output Connector
Pitch control voltage. 1V/Octave.
Velocity Output Connector
Velocity control voltage. 0-5 volts
Panel Size: Single width 2.125"w x 8.75"h.
Pitch Output: 0-5V, 1V/Octave response (12 bit D/A).
Velocity Output: 0-5V.
Gate Output: 0-5V, active high.
Trigger Output: 0-5V, 10ms, active high.
MIDI Channel #: 1
Power: +15V@50ma, +5V@50ma
The following tracking accuracy chart was taken from a QKB15S Keyboard Controller
taken right off the production line.
No special calibration, parts, procedures, or modifications were used.
Test Equipment Used (with recent calibration):
HP 3455a 6.5 Digit Voltmeter
|Q104 Tracking Accuracy|
| Desired || Actual || % Error |
End of Product Information