Digitana VCS3 MKII Quad Midi-CV 사용자 설명서 - 페이지 6

{카테고리_이름} Digitana VCS3 MKII Quad Midi-CV에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Digitana VCS3 MKII Quad Midi-CV 13 페이지.

Osc2/CV2

Apply the same procedure as above to CV2 and Osc2. The patch will now be as above but the

black pin connects Osc2 out to Output ch1 and the red precision pin connects Input Ch2 to

Osc2 frequency control.

Make sure Input ch2 level pot is set at 10 on the VCS3.

Set the CV2 scale pot to 10 on the Quad Midi-CV Unit and the toggle switch to 0.32V/Oct

range.

Set the lower toggle switch to the CV2 setting and the gate setting to G2. Plug in a Midi

Keyboard or software sequencer play a sequence of keys/notes at different octaves. This

time to trigger G2 and midi note 2 pitch CV (which is CV2) you need to hit 2 keys at the same

time. In poly2 mode ..the unit is duophonic so that when 2 keys are struck at once it assigns

lower note to CV1/Gate1 and upper note to CV2/Gate 2. We want to trim the CV2 0.32V/Oct

so you need to hit 2 keys (eg 2 keys next to each other on the midi keyboard is easiest) to

trigger gate G2 and CV2. If you hit just one key you will only trigger G1 and only Cv1 will

change as you play different single notes.

Now whilst playing these two keys transpose the midi keyboard up an octave or down and

octave. If the notes heard through the VCS3 sound flat/sharp...make small adjustments to

the second of the rear trimmers with a small screwdriver. You should hear the pitches of the

notes played change. Doing this you can trim the 0.32V/Oct setting of CV2 to match the

scaling of VCS3 Osc2 so it tracks chromatically over several octaves.

The fine tuning of CV3 scaling is less critical unless you intend on using CV3 to act as pitch

CV for controlling Osc3 in the audio range. You will need to put the unit in Poly4 play mode if

you want to use this option because In this mode Cv1-Cv4 correspond to pitches of Midi

notes 1-4. For changing play modes on the unit see later on in this guide. Note Osc3 in the

VCS3 is not (by design) tacking at 0.32V/Oct but at 0.26V/Oct (!) so you will need to adjust

the third trimmer on the rear of the unit rather more than for CV1 and CV2 to get the scaling

down to 0.26V/Oct. Other than this the procedure is as above but the patch should now take

Osc3 to Output Ch1 and CV3 to Osc3 freq. control. which is achieved by inserting a red

precision pin to connect row 16 (stick vertical CV) to Osc3 freq control input and also making

sure you have rotated and 'clicked' off the stick vertical scaling pot on the VCS3. This turns

row 16 into the third input channel where CV3 emerges.

Switch the gate selection control to G3 and then hit 3 simultaneous keys on your midi

keyboard. This will generate CV1-CV3 pitch CV's and trigger G1-G3 (only G1 and G2 have

Led's that light ). Apply transpose to the 3 keys you are simultaneously hitting to test

chromatic scaling of Osc3 and adjust the third trimmer as necessary.

Finally, You will have to have the inverter toggle switch in the on 'invert' position. Otherwise

you will find Osc3 plays 'backwards'..ie playing a higher key on the keyboard (hence a larger

positive CV3 voltage) generates a lower note (and visa-versa). The reason is a bit technical

but it's to do with the fact that all 3 Synthi Oscillators actually track using a –ve CV (NOT

Positive CV which is the norm for most other synths). Since Input Ch1/2 invert voltages fed

into them (they are inverting amplifiers) positive midi-generated CV1 and CV2 get inverted

to –ve CV by them. But row 16 (the third Input channel) does not invert..hence the reason

why I designed the unit to allow inverting of CV3.