#390880 - 02/16/00 10:45 PM
DA-38, Pulsar, Cubase Sync Problem
|
mahatma
Member
Registered: 02/16/00
Posts: 5
|
Offline
|
|
Oops! Sorry about the last post, that was supposed to go in the jobs forum, anyway I'm pasting the text of what I sent to the Cubase Forum
I am connecting a DA-38 to the ADAT I/O of a Pulsar card through a Tascam IF-TAD format converter. I can only get pulsar to slave to the DA-38 if I disconnect the optical out of the pulsar from the format converter. Then if I try to record into Cubase VST/24 the program will record for a Period of time (1-2 min.) and then stop and display a message saying "Maybe all outputs could be sensibly reassigned to similar numbered outputs on the new ASIO device". I have been able to get the pulsar card to slave when it's just running in the background, but when I try and open a new project the sync gets lost. With Cubase open, if I unplug the Optical out of pulsar to the converter, Cubase loses the scope driver, though I can reselect it. if I plug the optical cable back in, I can't select the scope driver in Cubase. I am thoroughly confused and still not tracking after calls and e-mails to Steinberg, Creamware and Tascam. Is anyone out there trying a similar configuration? HELP!!
|
|
Top
|
|
|
|
|
#390881 - 02/18/00 05:19 PM
Re: DA-38, Pulsar, Cubase Sync Problem
|
Roger Nichols
Platinum Member
Registered: 12/13/99
Posts: 1249
Loc: Miami, Florida
|
|
Offline
|
|
First I would borrow an ADAT and see if you have the same problems. It might be the delay through the TDIF/ADAT format converter. I have the Apogee TDIF/ADAT box which seems to work fine.
If it works fine with the ADAT, then you will know it is the interface box. If it still doesn't work, then it must be a software problem.
When you disconnect the optical cable, you are interrupting all clocks, which probably crashes drivers. You should be able to get things going without unplugging optical cables.
Roger
|
|
Top
|
|
|
|
|
#390882 - 02/19/00 10:24 PM
Re: DA-38, Pulsar, Cubase Sync Problem
|
mahatma
Member
Registered: 02/16/00
Posts: 5
|
|
Offline
|
|
After some futzing around waiting to hear from Tascam (and Creamware and Steinberg)I discovered that if the DA-38 is operating at 44.1k it will work fine as master or slave, but when I use a tape formatted at 48k, I can record from the computer into the DA-38, but when I try to get Pulsar to slave to the Tascam, the converter box loses sync and acts as if both units are trying to be the master(both data lights blinking). When I perform the same operation at 44.1, all I have to do is switch off the "word clock in" on the DA-38 and everything is fine. It just can't seem to re-lock at 48with Pulsar as the slave.. Of course I'm trying to load a 48k session tape into the computer.
|
|
Top
|
|
|
|
|
#390883 - 02/20/00 01:35 PM
Re: DA-38, Pulsar, Cubase Sync Problem
|
Roger Nichols
Platinum Member
Registered: 12/13/99
Posts: 1249
Loc: Miami, Florida
|
|
Offline
|
|
Ok, something is wrong here...
If the DA-88 is the slave then "external Word Clock" must be ON. and somewhere in the Cubase software or the Pulsar driver there must be a window to select the sample rate and INTERNAL or EXTERNAL SYNC.
If you have work clock in turned off on the Tascam, then it must be the master and you must select external sync on the Pulsar card. If you don't do this, it may look like it is working, but I gaurantee that there will be digital clicks in the audio about every 5 to 10 seconds because the sample rates are not synchronized.
This would explain why you can't get it to work at 48k, because the Pulsar board is still thinking 44.1k. They both have to be on the same sample rate.
Check the menus and find out where you change sync and sample rate on the Pulsar.
Roger.
|
|
Top
|
|
|
|
|
#390884 - 02/20/00 03:28 PM
Re: DA-38, Pulsar, Cubase Sync Problem
|
mahatma
Member
Registered: 02/16/00
Posts: 5
|
|
Offline
|
|
Sorry if I confused you, what I was trying to say is that the Pulsar card will not slave to the DA-38 at 48k. It works in all other configurations. When the Pulsar is set to slave, it automatically looks for the external sample rate of the selected device (Cubase automatically follows Pulsar). I can see "48k" blink on and off in the software, and it will lock for short periods of time, but it's not stable. As I said before, This is only when both optical connectors are attached (and only when I am working at 48k). If the optical output of the computer(Pulsar) is not connected to the interface, then the Pulsar card sees the incoming 48k signal with no problem (I have been told that both optical connectors have to be hooked up for the clock sync to work, so this confuses me) I can listen to the incoming audio all day on Pulsar's mixers with no glitches, I just can't record them in Cubase (at 48k). I have no trouble locking up at 48k going into the DA-38 (word clock in=on) The fact that everything works fine both ways at 44.1 assures me that it's not bad cables, I suspect that Pulsar is the one having a problem with the delay from the converter.
|
|
Top
|
|
|
|
|
#390885 - 02/21/00 05:17 PM
Re: DA-38, Pulsar, Cubase Sync Problem
|
Roger Nichols
Platinum Member
Registered: 12/13/99
Posts: 1249
Loc: Miami, Florida
|
|
Offline
|
|
I still think that there is a piece of software missing somewhere thst sets the output sample rate of the Pulsar card.
The input will always follow the digital signal comming in, the fight is that until you record something Cubase is not telling the Pulsar card what the sample rate is, so the Pulsar defaults to 44.1 out while the input is reading 48 from the DA-88. So they fight.
Try unplugging the optical cable, record a few seconds of 48k into cubase and stop. Plug the optical cable back in and try to continue recording on the same track (or whatever you have to do to add additional audio to the session) See if that works any better.
When you say the 48k is flashing that tells me that it can't decide what to do because one side of the board is trying to work at a different sample rate than the other side of the board.
Roger
|
|
Top
|
|
|
|
|
|
|
