Sixty Four Pixels Arpie, Руководство пользователя

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LED 2 selects between accent and clock output as follows:
Accent/clock Clock Rate
OFF
Clock out sends pulse clock
ON Clock out sends accent
Accent pulses are sent when accent is set for a step (PATN, accent layer).
LED 3 selects the pitch scaling to be used
Hz/volt Clock Rate
OFF 1V/Octave scaling
ON Hz/Volt scaling
LED 8 unlocks the CV Tab pitch calibration settings. The CV TAB is factory
calibrated, so you should not usually need to change this information. Otherwise you
can change the calibration by sending specific MIDI CCs.
The CV TAB maps an 8 octave range to a 12-bit DAC resolution. The firmware allows
compensation for any analog offset or gain error in the analog output buffer. A 7 bit
gain compensation /-63 DAC units to be added to the full voltage range
MIDI CC Action MIDI CC Value
70 Set scale compensation 0-127 map to -63..0..+63. 64 is no
compensation
71 Set offset compensation 0-127 map to -63..0..+63. 64 is no
compensation
72 Set CV output to test value MIDI note number (0-127)
73 Save calibration settings and
turn off calibration mode
The CV Tab calibration settings are stored on the CV TAB itself. Each CV TAB is
factory calibrated before sale.
If you need to recalibrate your CV Tab, you can use the following utility
https://github.com/hotchk155/arpie-cv-tab/blob/master/cal-tool/cal-tool.html
This is a standalone HTML file which you can download (use “Raw” option) and save
to your computer, then open it in a browser that supports WebMIDI (Such as Google
Chrome)
Select the MIDI interface to which the Arpie (with CV Tab installed) is connected,
enable calibration mode via hack header settings and follow the instructions on
screen.
You will need a voltmeter with .001V accuracy to properly calibrate the CV Tab.
Alternatively you can use a well-tuned VCO with an electronic tuner or frequency
counter.