Das STUDER und ReVox Forum

I have problem with studer D741 , when I select Cox Digital in , i have message " NO LOCK ". = no signal ?
XLR dig,XLR ana is working perfect .
can somebody help me ?

Thanks for answer , regards .

Hi,

No Lock means that the PLL Sync Circuit cannot extract the Wordclock out of the Data Stream.
No Wordclock > No Synchronization > Signal cannot be used, therefore invalid since not locked to external sync.

Try to connect the signal to another device. When it locks there, it will be the input section of your D741 which is corrupted or the Clock extraction circuit is out of tolerance and fails. If no lock can be achieved, check the cable and check signal with an oscilloscope.