MIDI ports on networked MTPII unreliable for Unisyn sysex
Posted: Wed Feb 04, 2009 2:29 am
Posting this in it's own thread so it will hopefully be of use to some:
In case anybody is interested, I found out something very interesting this evening. I did get the old MTP II I purchased used to network to my MTP A/V USB but I found something interesting:
DO NOT ATTACH DEVICES TO THE NETWORKED MTP II THAT YOU NEED RELIABLE TWO-WAY (AS IN SYSTEM EXCLUSIVE) COMMUNICATION WITH!
I was having all kinds of trouble with devices that I connected both MIDI IN and OUT to the MTP II (which was daisy chained off my MTP/AV). Sysex communication was happening, however Unisyn was reporting bad MIDI headers and it was unusable. I realized however that I had definitely had Unisyn work with some of the sound modules I was having problems with when those modules were attached to MIDI ports on my MTP/AV which was connected to the computer via USB. So I re-hooked up modules that were giving me fits attached the the networked MTP back up to my MTP/AV and they worked great!
And yes... I tried FAST and 1Mhz speed on the MTP II and MTP A/V and it made no difference. Sysex on the networked MTP II was totally unreliable yet fine on the MTP/AV USB.
Bottom line... a used MTP II is still a GREAT deal and very usable, but only attach to it hardware that you intend to simply receive note-data and nothing else. At least not if you're using Unisyn. I haven't tried with other Editor/Librarians!
In case anybody is interested, I found out something very interesting this evening. I did get the old MTP II I purchased used to network to my MTP A/V USB but I found something interesting:
DO NOT ATTACH DEVICES TO THE NETWORKED MTP II THAT YOU NEED RELIABLE TWO-WAY (AS IN SYSTEM EXCLUSIVE) COMMUNICATION WITH!
I was having all kinds of trouble with devices that I connected both MIDI IN and OUT to the MTP II (which was daisy chained off my MTP/AV). Sysex communication was happening, however Unisyn was reporting bad MIDI headers and it was unusable. I realized however that I had definitely had Unisyn work with some of the sound modules I was having problems with when those modules were attached to MIDI ports on my MTP/AV which was connected to the computer via USB. So I re-hooked up modules that were giving me fits attached the the networked MTP back up to my MTP/AV and they worked great!
And yes... I tried FAST and 1Mhz speed on the MTP II and MTP A/V and it made no difference. Sysex on the networked MTP II was totally unreliable yet fine on the MTP/AV USB.
Bottom line... a used MTP II is still a GREAT deal and very usable, but only attach to it hardware that you intend to simply receive note-data and nothing else. At least not if you're using Unisyn. I haven't tried with other Editor/Librarians!