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#1
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\"external clock choice invalid. reverting to internal.\" HELP
I've never had problems syncing to s/pdif before and now I need to sync to adat as well but now I can't do either. instead I just get this message. i'm not too familiar with digital stuff so can someone please help me out?
thanks |
#2
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Re: \"external clock choice invalid. reverting to internal.\" HELP
Only one device can be the master clock, the other 2 will need to be set to sync to incoming clock.
Post more details of your setup and we'll try and help you out. |
#3
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Re: \"external clock choice invalid. reverting to internal.\" HELP
I'm having the same problem. I'm trying to set up my ADAT to use the lightpipe in on my 002 rack, I'm getting level to the ADAT just fine but whenever I try to set the clock to ADAT in the hardware setup I get that message. And no matter what I do I don't get any signal into PT. I've swapped cables and all that of course. Any ideas?
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Paul M. Grove bludatta.com |
#4
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Re: \"external clock choice invalid. reverting to internal.\" HELP
Please provide more information on your system (Pro Tools version, OS version, etc) as well as how you have everything connected.
The more detail you can provide, the easier it is to troubleshoot. You may want to check out the "Help Us Help You" link in my signature for more info... |
#5
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Re: \"external clock choice invalid. reverting to internal.\" HELP
No problem. Mac OSX Tiger on iMac (last version before intel), PT 7.1, Digi 002 rack. Everything works and sounds great. Hooking up to a black-face ADAT, lightpipe in and out. Both lightpipe cables have been tested. I get signal to the ADAT just fine. I open a new session in PT, set to 16bit 48K (I've also tried pitching down the ADAT and doing it at 44.1K). When trying to select ADAT as the clock source in the hardware setup I get the message "external clock choice invalid. reverting to internal."
Leaving the clock source internal, when I record enable a track and select one of the ADAT inputs which is getting signal, I do not get input into PT. In the hardware setup I made sure that lightpipe is NOT set for S/PDIF. I checked the routing and it all seems sane (the default setup should be perfect). Thanks for your help!
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Paul M. Grove bludatta.com |
#6
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Re: \"external clock choice invalid. reverting to internal.\" HELP
If you have clock source set to 'Internal', do you also have the ADATs set to sync to external clock? You'll have to forgive me if I can't remember if/how this is possible - it's been many years since I've used and ADAT.
If the ADAT locks to the clock coming from Pro Tools and you're still not getting signal coming back from the ADAT, then I would say you either have a bad output port on the ADAT, a bad input port on the 002, or the cable is intermittent. One other thing - are you absolutely sure both your session sample rate and the ADAT sample rate match (typically 48k)? |
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