VS-100 Loses S/Pdif Sync

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MurMan
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2010/05/20 15:50:41 (permalink)

VS-100 Loses S/Pdif Sync

I ran into a problem last night and I thought I'd see if anyone had seen a similar issue.
 
I tried connecting a Motif XS to the VS-100 running in standalone mode using the S/PDIF connection.  It sounds great, but I started hearing occasional crackling noises. 
 
I tracked it down to a very repeatable sequence.  When I play a medium to loud passage on the Motif and release, i.e. the keyboard output goes to silence, the VS-100 loses sync.  The display shows it going through the re-sync process and sync is regained in about two seconds.
 
I haven't had much time to determine if the problem is with the Motif or the VS-100.  But there are no postings on motifator.com for this issue and my engineering background tells me that the s/pdif clock recovery on the VS-100 is probably having problems when the datastream goes silent.
 
Has anyone else seen this?

Sonar 8PE & VS, Presonus Firestudio, VS-100, AlphaTrack, Nord Stage Compact, Roland Sonic Cell,  Axiom 49, dbx 386, Event TR-8's, Kawai 650, ...
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    Iaroslav
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    Re:VS-100 Loses S/Pdif Sync 2010/05/20 22:18:28 (permalink)
    Hi, MurMan!

    I just tried your setup by connecting my XS8 to VS-100 in stand-alone mode via S/PDIF and everything seems to work perfectly fine. I am not getting any messages about re-sync or anything else VS-100 display.

    I tried Full Concert Grand as well as several Pipe Organs and all the time after I stop playing everything goes to silence and levels on display just go down.

    Let me know, if you would like me to try something else.

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    MurMan
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    Re:VS-100 Loses S/Pdif Sync 2010/05/20 23:22:49 (permalink)
    Thanks, Iaroslav, for checking this out.  At least there's nothing fundamentally wrong with this setup.

    It could be the cable that I'm using.  I thought it was a 75 ohm cable based on its thickness, but it doesn't have any markings on the jacket.  Somewhere in the bottom of a box is a real 75 ohm cable ...

    Sonar 8PE & VS, Presonus Firestudio, VS-100, AlphaTrack, Nord Stage Compact, Roland Sonic Cell,  Axiom 49, dbx 386, Event TR-8's, Kawai 650, ...
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    MurMan
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    Re:VS-100 Loses S/Pdif Sync 2010/05/20 23:57:23 (permalink)
    Found a 75 ohm cable.  Two feet long, unfortunately, but OK for a test.

    The VS-100 still loses sync, but not on every try now.  

    But, I found another way to make it fail everytime: Connect, play something (one note ppp is all it takes), and let it go to silence.  Then, rotate the Main Mix control.  It loses sync.  It's not a loose connection because if I connect, but don't play anything, and rotate the Main Mix, it does not lose sync.  I can flex the cable and move the gear around, and it's solid.  Since the Main Mix is a digital encoder, it might be firmware problem.

    Think I need to call support.

    Sonar 8PE & VS, Presonus Firestudio, VS-100, AlphaTrack, Nord Stage Compact, Roland Sonic Cell,  Axiom 49, dbx 386, Event TR-8's, Kawai 650, ...
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    Iaroslav
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    Re:VS-100 Loses S/Pdif Sync 2010/05/21 09:29:50 (permalink)
    I'll play with Main Mix control more tonight, but I think I did it yesterday because at the beginning there was no sound in my headphones and I had to turn all related knobs up and down several times until I get proper level...
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    Iaroslav
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    Re:VS-100 Loses S/Pdif Sync 2010/05/22 15:49:44 (permalink)
    I did some more tests, but only when I turn VS-100 on, connected to XS8, I am getting "Coaxial Clock 44.1kHz" message (right after the VS-100 Logo screen). Then unit never shows it or anything similar. Just in case, I have VS-100 v.1.30 and XS Firmware v.1.51.3.
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    madoues
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    Re:VS-100 Loses S/Pdif Sync 2010/06/27 23:02:45 (permalink)
    I have the same problem with a VG-99 guitar processor, with all firmwares, but a bit better since 1.19.  All I have to do is turn down the volume on my guitar and the VS-100 looses sync. Turn up volume, sync returns in a few seconds. Changing patches does it sometimes, sometimes not.

    Cakewalk have confirmed the bug with a VG-99 they borrowed, but have not fixed it yet, to my knowledge anyway. Since you are only the second person to point this out in almost a year, I suppose you shouldn't hold your breath for a fix anytime soon.

    It's too bad, the VS would have been the perfect tool for me. I still use it, but this problem makes the s/pdif input totally useless for me.

    Hey, CW could we have a bit of news on this? Even an explanation why it can't be fixed would be better than nothing. Or is it just that hardly anybody is complaining?

    See this thread:  http://forum.cakewalk.com/tm.aspx?m=1803175&high=

    Dan

    Sonar 2016, i7 4770K, Asus Z87-A, Win7, Tascam DM-4800, MOTU 828MKIII, Tranzport,  Peavey VMP-2, Focusrite ISA-828, Benchmark MPS-400, JBL LSR4328Ps, Mics(U87s, 414s, C460s, ....)
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