MOTM

Check if the 650 is putting out 1 volt higher each octave. A MIDI 
keyboard might be easier than a sequencer for this test.

0. Like Paul said, double check the 650 is set for the 12T Equal Temp scale.
1. Put voltmeter on 650 CV out.
2. Play a note and hold it. Measure voltage.
3. Play the next octave higher. Voltage should be 1 volt more.

If playing an octave up make voltage go up 1 volt, the 650 is fine and 
your problem may be the VCO, a bad cable, etc.. Try a different VCO 
and/or a different cable.

Let us know what happens.

Richard Brewster
http://www.pugix.com

Paul Schreiber wrote:
> a) the power supply has nothing to do with it
> b) how do you know it's the '650, not the VCOs?
> c) are you certain the 12T Equal Temp scale is selected?
> d) there is a small 11-turn white trimmer that sets 1V/Oct.
> Paul S.
>
>     ----- Original Message -----
>     *From:* Gene Schwartz <mailto:implode7@...>
>     *To:* MOTM <mailto:motm@yahoogroups.com>
>     *Sent:* Saturday, April 21, 2007 7:41 PM
>     *Subject:* [motm] Motm 650 not tracking pitch correctly
>
>         I haven\ufffdt used it in awhile, and I\ufffdve moved to a new apt. I\ufffdm
>         noticing now that an octave on my midi sequencer is producing
>         far less than an octave through the motm 650. Microtonality is
>         nice, but I\ufffdd like to have this working correctly. I\ufffdm very
>         far from expert in such areas, but could the power in this
>         place be screwy? Everything else seems to be working...I think.
>
>         Thanks,
>         Gene
>
>