Is spdif (AES) sync reliable as wordclock in Pulsar ?

[musurgio]

Hi,
I have a mytek studioclock device (what a sound to my whole system !!)
It has aes/ebu out that outputs the same clocking information that bnc wordclock outputs send but for aes/ebu connections.
I have connected using a canare 110/75 ohms transformer to Pulsar classic spdif input.
Sync and sound is solid.
I wonder though if it is the same class of sync as with using a sync plate and poulsar worclock in connection.
Regards,
Dimitrios

[garyb]

i would expect the best results from syncing to word clock, but the aes sync should be more than good enough. aes works great.

[djmicron]

one of my systems is synced to aes ebu word clock and it's ok .

[Wired]

gary, if my api has the aes, how could i hook up something in cw (i have a16 ultra and syncplate) to try and get rid of a little crackle?

Cause it seems the a16 masters to scope via adat?, and connects to api via bnc cable (w/o wordclock), i'm having trouble with this

[Wired]

gary, if my api has the aes, how could i hook up something in cw (i have a16 ultra and syncplate) to try and get rid of a little crackle?

Cause it seems the a16 masters to scope via adat?, and connects to api via bnc cable (w/o wordclock), i'm having trouble with this

[astroman]

as long as you don't have the BNC studio clock (you mentioned in another post), slave the Scope to the API and slave the A16U to Scope - the crackling will be gone for sure

cheers, Tom

[Wired]

no sync out on api only sync in

[astroman]

the sync is included in the s/pdif and AES signal - you can set it as the sync-source in the Scope samplerate dialog.
Of course the ABI box must be on constantly then, or you'd have to switch sync source, even that wouldn't be a big deal .

cheers, Tom

[garyb]

yes, just slave scope to aes(the api) and slave the a16 to scope.

[Wired]

yes, just slave scope to aes(the api) and slave the a16 to scope.

i thot that only api can be slave whether spdif or aes, there is no master option from api

[Wired]

yes, just slave scope to aes(the api) and slave the a16 to scope.

i thot that only api can be slave whether spdif or aes, there is no master option from api

[astroman]

if the API is set to 'internal' clock (probably it's default) then it IS master, as any device that wants to communicate with it has to slave to it.
Try it -it will work
master slave is just a picturesque description, it's not a special mode

cheers, Tom

[Wired]

if you look at the rear side of the api A2D, it only has bnc sync in, .. 1way spdif (which is out), aes (not sure, only one, probablyout), so i know that api must be slaved, but if my a16 is master via adat to scope, how does my api sync up because it doesnt have adat only bnc....i will rent a wordclock, but they are such a ripoff to buy

[garyb]

if it's a digital device it has an internal clock. sp/dif or aes out will carry sync.

[garyb]

or if you really want, try slaving the a16 to scope and then sending wordclock via bnc from the a16 to the api.

the earleir method of making the api master is probably easier, but....

just make sure that you use the proper cable if using aes or bnc. it must be a digital cable if aes or sp/dif, it can't be a mic cable or other audio cable. aes are 110ohm, sp/dif are 75ohm and wordclock is 75ohm. not using the right cable will make noise from a light distortion to hardcore crackles.

[Wired]

thankx, one of the probs i had was that when i connect wordclock out of the a16 to the sync in of the api , only silence, ...(i thot that was because i don't have a wordclock, but what your saying is the a16 does so i can use the out of the wordclock even tho i don't have an external wordclock, but i still get silence.

i think the confusion with scope comes in is because sync is with a16 and scope via adat, not one wordclock hub for all, ...

[Shroomz~>]

With a CW sync plate installed, Scope will send out wordclock via the plate's BNC out while Scope is slaved to another external devices' clock via adat. This is proven to work very well & should work in most situations. In other words, while your master Scope card is slaved to your external AD converter (A16 in your case), it will also pass wordclock sync to it's spdif, adat & BNC outs & should sync several devices without a problem.

[Wired]

[quote="garyb"]if it's a digital device it has an internal clock. sp/dif or aes out will carry sync.[/quots

seems no minor crackles happening, i have the a16 on adat and scope slaved with api coming in spdif, ...so is the api master in this scenario and if the sync is coming in spdif , and opt is adat, how is it picking up spdif sync?

[garyb]

the api's clock sets scope's clock via sp/dif. scope sets the a16's clock via adat. viola! everything is timed the same, no clicks.

clock is clock regardless if it is transmitted via bnc, aes, sp/dif, or adat.