Transmission frequency of MIDI Express?

dubwon · Post by **dubwon** » Sun Dec 24, 2006 6:26 pm

Does anyone know what the transmission frequency of the MIDI express 128 is (in khz)? I have a Studio Electronics SE1-x that needs an OS upgrade and the instructions say:

"Set your MIDI interface to 1MHz (this has nothing to do with "tempo" - which is preset), or whatever your slowest transmission speed is, for if you do not••“again••“you will savage, decidedly irreparably, your Flash-ROM chip."

Jidis · Post by **Jidis** » Mon Dec 25, 2006 1:49 pm

Unless that's a joke, it sounds like some weird type of "turbo" mode specific to a different interface, but it wouldn't be changing the actual outside MIDI transmission rate (fixed at 31.25k). I wouldn't worry about it with your particular box.

George

dubwon · Post by **dubwon** » Mon Dec 25, 2006 3:01 pm

No it's not a joke, I know it sounds weird, I've never heard MIDI transmission speed mentioned before. But I am concerned as the readme for the SE1x update says that if you use a faster transmission speed that 1khz to update the OS you can damage the chip. Great design feature there!! Who the heck has adjustable frequency output on their MIDI interface?

Jidis · Post by **Jidis** » Mon Dec 25, 2006 3:21 pm

Dubwon,

Man, that IS weird.

I just went and looked at their site. I'd steer clear of that process until you make sure they're just being safe and it doesn't pertain to you. The files are regular .mid MIDI files.

You saw this right?

"If it appears that your interface doesn't allow you to define this value DO NOT PROCEED!!"

Strange and frightening update method indeed, though definitely intriguing.

George

<edit>--- I just bounced those quotes over to a DIY MIDI forum where there are lots of synth people. If they know, I'll come back and tell you, but they're mostly on the other side of the world (from me in the US) so the peak hours are sort of unpredictable.

dubwon · Post by **dubwon** » Mon Dec 25, 2006 5:07 pm

thanks for forwarding that to another MIDI forum. do you have a link? i've already contacted motu and RME (i have an hdsp9652 which has a MIDI port i could use as well) tomorrow i will give studio electronics a call and see if there's an easier way to do this.

Jidis · Post by **Jidis** » Mon Dec 25, 2006 7:47 pm

Dubwon,

Hey again. Yes (sorry), it's http://www.midibox.org/forum/index.php

Should be in the "Miscellaneous" section. As of yet there are no replies, but it's been sort of slow lately anyway.

Interested to see what the heck an oddball MIDI interface frequency is all about.

George

dubwon · Post by **dubwon** » Mon Dec 25, 2006 8:23 pm

awesome, thanks!