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By the way, if you don’t own a voltmeter and
need one for calibrating one of the other
modules in your system, you can use this
feature of your Assimil8or to do this! If you
want to calibrate your keyboard (or other
voltage source) to the Assimil8or, use this
mode and adjust the source module to
produce what Assimil8or says is exactly 1V/
octave. (It’s best to calibrate with the highest
voltage available, for example if you have a
4 octave keyboard, adjust the lowest key to
0.000V and the highest to 4.000V). It’s best
to use Assimil8or’s CV A inputs in this mode;
they are slightly more accurate than the CV B
and CV C inputs.
Assimil8or’s sample inputs should have an
offset (what is displayed when 0V is applied
or nothing is plugged in) within 1-2mV of
zero, and be accurate to about 1% of any
applied voltage (4.000V should read between
about 3.960V and 4.040V).
(Because Assimil8or’s signal path has a 1.00k
Ohm output impedance, the gain will vary
about 1% depending on the input impedance
of its load, so we don’t calibrate the signal
path gain.)
Once you’re done checking your calibration,
press the encoder to proceed to the next
step.
You can calibrate inputs individually or in any
combination.
The next screen shows all the input channels,
probably in green. If you are calibrating one
or more particular CV inputs to a 1V/octave
source, you should connect that source to
those inputs and set it to output 0.000V.
Leave the sample input jacks and any CVs
you don’t plan to calibrate open. Once you’ve
done this, press the encoder to proceed.
The next screen again shows all the input
CVs, probably in red. Apply e4.000V
from your precision source to any CVs you
are calibrating; they should turn green.
Once you’ve done this, press the encoder to
proceed.
The next screen shows only the input
CVs you are calibrating, probably in red.
Apply exactly -4.000V to the CVs you are
calibrating; they should turn green. Once
you’ve done this, press the encoder to
proceed.
The next screen shows you all the CV inputs
that will NOT be re-calibrated in red. From
here you can rotate the encoder CCW and
go back to calibrate more CV inputs, or press
the encoder to accept your CV calibrations
and proceed to calibrate the output offsets.
The next screen requests that you patch
each Channel output to its corresponding
CV A input, and patch the Mix Outputs to
the Sample Inputs. Each channel number (or
letters L or R) will go from red to green when
the corresponding patch cord is detected.
Once you’ve done this and all the characters
are green, press the encoder to proceed.
The next screen will tell you if any of the
patch cords were not inserted or if any output
could not be calibrated. Press the encoder to
proceed.
You now can choose if you want to save your
new calibration. Press the encoder to save
it, or press UTILITY to exit without saving the
calibration.
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