[sdiy] Weird JX3P midi behavior

[Florian Anwander]

Travis

I don't think the JX3P could invoke anyhow a clock-command. Even not 
occasionally due to some error (exception: a KIWI-3P extension is 
installed, which is able to create MIDI-Clock). Also expecially the 
fact, that the note event appears twice with in a very short timeframe:
15:36:25.754	From MIDI Port	Note On	1	D4	1
15:36:25.802	From MIDI Port	Note On	1	D4	1
makes it look like the MIDI-Event is repeated by some software as a 
MIDI-loop within a MIDI sequencer.

Are you sure, you do not have some additional MIDI sequencer included?

If this is not a KIWI-3P or a Organix-extended JX-3P, then: MIDI In will 
not work if the Memory-Protect-switch is NOT to the most right position 
(seen from the rear side).

Also: If the JX-3P is set to Omnimode off. Then you have to send with 
MIDI-Channel 1

If it is a Organix-extended JX-3P, then the former Memory-Protect-switch 
determines whether the synth reacts on MIDI-Channel 1, 2, or 3.

If it is a KIWI-3P, then the MIDI-In-Channel must be determined with 
parameter TAPE->GroupA->BankB->Tone1

MIDI-In might be broken if one of the following components is dead on 
the MIDI-Board:
74LS00
Optocoupler PC900
Diode 1S2473
Q1 Transistor 2SC945

And finally of course any broken wire or pcb trace could cause a not 
working MIDI-In.

Florian





Am 27.11.2012 17:25, schrieb Travis Thatcher:
> The synth does work perfectly but yes, the MIDI out appears to be
> corrupted and while that doesn't bother me as much, the MIDI in
> doesn't respond to note input at all.
>
> At first I thought it was only firing note on messages when I let up a
> key, but that was when I was just testing it controlling a soft synth,
> not actually looking at the midi stream.  This last test was done
> using midi monitor with no other midi input to my system and no other
> audio related programs running. Just midi out of jx to midi in on my
> Motu 828MKII.
>
> -T
>
> On Tue, Nov 27, 2012 at 9:10 AM, Florian Anwander
> <fanwander at mnet-online.de>  wrote:
>> Am 27.11.2012 03:13, schrieb Adam Inglis:
>>
>>> Sounds like a problem reading the keyboard matrix,
>>
>> He would not be able to program the sequencer, if the kbd-matrix would be
>> read wrongly.
>>
>> As far as I understand Travis right. The synth itself works perfect, but the
>> MIDI-Out is corrupted.
>>
>> Just one question to Travis going back in the thread history:
>>
>>> 1. Midi out - note on events are only firing when you let up a key.
>>> No note off events are happening and nothing happens when you
>>> depress a key, only when you let off.
>> How did you recognize that? What was the receiver for the MIDI-Signal coming
>> from the JX3P? How was the MIDI wiring set up?
>>
>>
>> Florian
>> --
>> http://fa.utfs.org/
>>
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
>
>


-- 
http://fa.utfs.org/