I’ve set the note length short, so I don’t think that’s it. Here are a couple short captures from MIDI Monitor, with the unnecessary bits omitted:
Sequence sent from Logic, recognized OK on the Pittsburgh:
*** ZERO *** Note On 1 C3 80
*** ZERO *** Note Off 1 C3 64
*** ZERO *** Note On 1 C#3 80
*** ZERO *** Note Off 1 C#3 64
*** ZERO *** Note On 1 F3 80
*** ZERO *** Note Off 1 F3 64
*** ZERO *** Note On 1 C2 80
*** ZERO *** Note Off 1 C2 64
Sequence sent from ZAQuencer, malfunctioning:
15:27:28.205 Note On 1 C3 127
15:27:28.248 Note Off 1 C3 0
15:27:28.580 Note On 1 C#3 127
15:27:28.623 Note Off 1 C#3 0
15:27:28.955 Note On 1 F3 127
15:27:28.998 Note Off 1 F3 0
15:27:29.330 Note On 1 C2 127
15:27:29.372 Note Off 1 C2 0
Anything stand out to you?