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RME User Forum → HDSP(e) series → HDSP 9652 & Multiface
Will I be able to connect a Multiface I with an HDSP 9652 card to increase my channel count?
Yes, with an RME HDSP or HDSPe interface card for the MF - not directly.
Regards
Daniel Fuchs
RME
Thanks Daniel. Do I sync them with the word clock connections?
Indeed you do...
Regards
Daniel Fuchs
RME
Thanks again. Have a great weekend. :-)
Is there no way to sync these two cards internally?
Thanks again.
No, but you can use WC adat or spdif. Adat is best AFAIK.
So, even if the two cards are not connected, the ADAT lightpipe from different AD/DA converters will be in sync? I didn't know it could be so easy.
So, even if the two cards are not connected, the ADAT lightpipe from different AD/DA converters will be in sync? I didn't know it could be so easy.
Not quite that easy. You'll still need some form of sync refererence across cards and/or across converters depending on your exact topology. The clocks in all devices need to be referenced to a common clock SOMEWHERE in the chain. Not tough by any means, but all of the available options (and which one is likely to be most stable/lowest jitter/most convenient) can be easily obfuscated for those new to Digital Audio.
So, even if the two cards are not connected, the ADAT lightpipe from different AD/DA converters will be in sync? I didn't know it could be so easy.
If you set one card to master and the other to slave to adat.
What I'd like to do is connect the 2 PCI cards internally.
There are connections labeled "Sync 1" and "Sync 2".
Can I use these to sync the two cards?
If so, where can I get a cable to connect them?
If not, what are they used for?
I don't believe the MF HDSP PCI card's "SYNC" connectors have any end-user functionality. I'd just use BNC and be done with it as not to waste an ADAT connection for sync-only purposes. At least link the 2 cards over BNC, and then configure the Master/Slave topology appropriately across devices to re-distribute the clock via ADAT - or use a BNC "Tee" Loop to all devices which can be preferable. You could also sync over SPDIF Coax to avoid eating up any ADAT I/O (if you don't have any BNC cables handy), but you are still using a pair of SPDIF I/O's for nothing other than sync. BNC Sync doesn't "waste" any valuable audio I/O, and the video-bandwidth spec of most BNC cables (especially HD-SDI rated BNC cable) generally works very well for wordclock sync (and remains "on the cheap")...
Bottom line - You'll need to link the MF-I's clock (and/or the AD/DA's it is feeding) to the 9652's clock (and/or the AD/DA's it is feeding). You'll have to "cross streams" ( 
) at some point.
Thank you for the specifics Randy. I'll pick up some BNC stuff and run the tests.
RME User Forum → HDSP(e) series → HDSP 9652 & Multiface
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