[LAU] ADAT blackface and RME DIGI 32/8

[Paul Davis]

On Sun, 2007-04-08 at 22:45 +0200, Johan wrote:
> Paul Davis wrote:
> >
> > you need to set the clock sync up. one of the two devices has to be the
> > master, one has to be a slave. there are GUIs to do this for later RME
> > devices, but for the DIGI 32/8, you are stuck (i think) with editing
> > text files or using the low level amixer command. i don't know what
> > mixer element (switch) needs toggling. i would suggest using the RME as
> > the master and the Alesis as the slave, but it doesn't matter much
> > either way.
> >
> >   
> I can't understand the way amixer behaves. The ADAT works only with
> 48000 but it  card appears to refuse that sample rate. Or am I wrong?
> 
> Here is the console output:
> 
> projektet at arvo:~$ amixer
> Simple mixer control 'Input Connector',0
>   Capabilities: enum
>   Items: 'Optical' 'Coaxial' 'Internal'
>   Item0: 'Optical'
> Simple mixer control 'Loopback Input',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [off]
> Simple mixer control 'Sample Clock Source',0
>   Capabilities: enum
>   Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz' 'Internal 48.0kHz'
>   Item0: 'AutoSync'

i would just leave it at this setting. it will sync with the ADAT as
long as the sync source is the ADAT connection (and not a S/PDIF one,
for example).

the behaviour does seem mysterious. it looks like a bug in the driver.

--p