about sync

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 9:31 am

hello everyone,

I need advice on the best clock configuration I can get with my system;

noah -> rme fireface 800 <-> 2X pulsar 2

the -> and <-> links are adat connexions. I use the rme as an I/O device and the pulsars for mixing.

I also have a sync plate that could be used if needed. My questions are:

- which of the rme or creamware clock is best
- should I link everything using BNC cables or is the adat optical cables doing the job

thanks

Laurent

Post by **garyb** » Sat Oct 13, 2007 9:41 am

bnc cables would make it easier, anyway. all three have pretty good clocks, but not as good as one in a masterclock, so i wouldn't expect any beeter audio than the other sync setup as the clock's the same regardless. bnc is likely to be the lowest jitter connection, so there might be a slight advantage...

otherwise, if it works properly, it's good.

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 5:49 pm

I've just had a wrestling match with those fuckers and got beaten badly

awright, bnc doesn't seem to work, but adat does..

would aquiring an external clock improve things?

Gary, thanks for your help

Post by **garyb** » Sat Oct 13, 2007 5:52 pm

yes, a master clock would be better, but the difference is subtle. jitter would be reduced and the sound should be more focused, but it won't be the difference between good and bad sound....

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 5:56 pm

ok then, I like the sound already so leaving it this way won't harm anything

thanks again

Post by **garyb** » Sat Oct 13, 2007 5:57 pm

yes, no reason to spend another $1000 on the clock at this point.....

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 6:04 pm

are you shitting me?? hey I worked hard to get it to look like that... not to mention my wife's opinion

Post by **hubird** » Sat Oct 13, 2007 6:08 pm

the ultimate studio

you could resize the picture tho

and delete the last one

you did already

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 6:17 pm

another wrestling match with paint... but this time I got ITS ass sore..... ok now it's time to try to get back to music

Post by **hubird** » Sat Oct 13, 2007 6:29 pm

give your girlfriend a few bucks to spend in a local bar...

Gordon Gekko · Post by **Gordon Gekko** » Sat Oct 13, 2007 6:35 pm

nah, i'd rather get her involved in this so I can get away with it longer...

Post by **hubird** » Sat Oct 13, 2007 6:45 pm

then you have the good one

Post by **garyb** » Sun Oct 14, 2007 12:09 am

Gordon Gekko · Post by **Gordon Gekko** » Sun Oct 14, 2007 2:26 am

Gordon Gekko · Post by **Gordon Gekko** » Sun Oct 14, 2007 4:13 am

Guys, how would you connect the word clock chain given the fireface & sync plate both have word clock in/out and the noah only has a word clock in? do I need terminators? T adapters?

thanks

astroman · Post by **astroman** » Sun Oct 14, 2007 4:36 am

the clock generator Gary refferred to has individual BNC outputs for each device.
I don't think that a BNC daisy chain has any advantages over a good Adat clock, guessing from my experiences with ancient network cabling...

cheers, Tom
...so you married the girl with the beautiful voice ? congrats

Gordon Gekko · Post by **Gordon Gekko** » Sun Oct 14, 2007 6:58 am

thanks astroman, yes we got married on september 22nd and went on our honeymoon in Italy; Rome, Ombria and Toscany.. hey how could I not marry this beautiful woman

Gordon Gekko · Post by **Gordon Gekko** » Sun Oct 14, 2007 7:18 am

but I'd still want to use the sync plate or fireface wordclock just for comparison sake.. the funny thing is that only one adat channel syncs up with either one of the pulsar 2 or the noah when I use adat cables only, not both i.e. one locks and the other syncs. This is apparent when looking at the corresponding adat leds on the fireface. adat1 is lit up while adat2 is flashing meaning the first is synced and the other is locked.

Otherwise when I wire the sync plate word clock out to the noah and the fireface word clock out to the sync plate, both adat1 and adat2 are synced but the fireface word clock led is dead meaning it doesn't recognise a valid word clock signal. This (word clock) led lights up if I use both BNC cables to wire the sync plate to the fireface and forget about the noah wordclockwise

but then the adat led displaying noah's connection on the fireface flashes..arf, I hope this is clear, I'd rather draw this on paper

The short version is: I have a feeling that if I use a BNC T connector plugged on the fireface word clock in and wire the sync plate word clock out to the first branch of the connector and then the second branch to the noah, and of course the fireface word clock out to the sync plate word clock in (ok forget about the short version) then all will be synced AND wordclocked? that is what I need you guys to confirm or not. what about terminators?

thanks for your help so far

Gordon Gekko · Post by **Gordon Gekko** » Sun Oct 14, 2007 7:42 am

ok here is the short version:

how do you wire up BNC cables on two machines that have wordclock in and outs and one machine that's got only one in to get a valid wordclock signal?

clap clap clap

PS: with this?

http://www.bhphotovideo.com/c/product/1 ... _Male.html

astroman · Post by **astroman** » Sun Oct 14, 2007 8:17 am

well, did you read the chapter about wordclock in the Fireface User Manual ?
it's very informative and answers some of your questions.

I would set Fireface to wordclock master, FF BNC out to Scope SyncPlate In, SyncPlate Out to Noah BNC.
Scope and Noah slaved to wordclock - thus all Adats should be in sync, too - in my humble understanding. Noah is probably terminated internally.

I'm not sure if that's an optimal setup with the FireFaces's reclocking abilities, since I don't have experience with that device - at least it reads pretty sophisticated.

cheers, Tom