New Synthesizers.com Q174 MIDI Interface

via Synthesizers.com

"The Q174 MIDI Interface module accepts MIDI data from a keyboard, computer or other device and produces Pitch, Gate and other signals needed to control the synthesizer.

Three modes of operation offer a variety of outputs for one or two MIDI channels. Outputs include standard 1V/Octave Pitch outputs with 10-octave ranges, 5V Gates, Trigger pulse, On and Off Velocity, Channel Pressure and several Continuous Controller outputs.

Complete control over Note Priority and Gate modes provide virtually any type of keyboard response emulating virtually all vintage and modern keyboards along with some that are unique.



Controls and Connectors

MIDI Input
MIDI input. Channel is jumper-selectable to 1,3,5 or 7.
Pitch Output

Pitch voltage output. 1V/Octave scaling. 10-Octave range. This output also responds to pitch bend messages from the MIDI port (+/- 2 semitones).
Add In Input

Voltages patched into this input are added to the voltage at the Pitch output. This allows transposing using a sequencer, vibrato from oscillators, merging of other controllers, etc.
Velocity Output

Note On Velocity messages produce a voltage at the Velocity Output. The range is 0-5V. This voltage can be used to set amplitude, filter frequence or any voltage-controllable parameter within the synthesizer.
Gate Output

Gate output. 5 volt positive. Typically used to control envelope generators are start sequencers. An LED indicates the status of this output.
Mode Switch

The mode switch determines the function of the middle three outputs. Regardless of the mode, data from the first MIDI channel produces signals in the top section. Gate and Priority switches are in effect in all modes.
Mode 1

Full-featured single-channel operation. The middle three outputs produce Channel Pressure voltage, Off Velocity voltage and a Trigger Pulse.
Mode 2

Full-featured single-channel operation. The middle three outputs produce Pitch, Velocity and Gate signals for a second channel (selected channel+1).
Mode 3

The middle three outputs produce analog voltages from Continuous Controller Messages #1 and #7, along with an On/Off Gate signal from #4. These can be used to control filters, start sequencers, etc.
Gate Mode

Determines how Gate signals are produced when multiple keys are pressed. Single mode produces a new Gate signal only when there is one key being pressed, subsequent overlapping notes do not produce a Gate. Multiple mode produces a new Gate at ever keypress regardless of the number being pressed simultaneously. Mulitple+R mode is like Multiple mode but also produces a new gate when keys are released.
Note Priority

Determines how Pitch voltages are created when multiple keys are pressed. Last mode produces a pitch that is the most recent note played. Low mode produces a the lowest being played. High mode produces a the lowest being played.

Specifications
Panel Size: Single width 2.125"w x 8.75"h.
Pitch Outputs: 1V/Octave, 10-octave range.
Velocity Outputs: 0-5V.
Gate Outputs: 5V positive.
Trigger Output: 5V positive, 5ms.
Channel Pressure: 0-5V.
MIDI Pitch Bend: Affects Pitch outputs +/- 2 semitones.
Pitch Add Input: External voltage added to Pitch.
CC Outputs: CC1(analog 0-5V), CC7(analog 0-5V), CC4(digital 0-5V).
MIDI Channel #: Jumper-selectable to 1, 3, 5 or 7.
Gate Modes: Single, Multiple, Multiple+Release.
Note Priority: Last, Low, High.
Power: +15V@30ma, -15V@30ma, +5V@50ma."