1 Topic by alemass (edited by alemass 2012-12-07 21:34:14)

  • Registered: 2007-10-28
  • Posts: 68

Topic: UCX wordclock cable problem

Just a pair of months ago I bought a fireface ucx.Great piece of hardware and software.
I use that as a digital bridge to mytek 8x192 from a new mac mini.
The routing is as follow:

mac-rme adat out-mytek-outboards-mytek-rme adat in.
The adat-in of the UCX is then routed to the spidf out to my
crookwood da(of the mastering console) for monitoring(through the total-mix function).

if I set the adat-in as master clock although
the sync tells 48k when the clock is 96k all seems to work fine.

If I put a wordclock cable from mytek to UCX the result is the same as above
clock at 96k and adat sync at 48 but now no audio comes from spdif.

question:is this because I have the spdif-out of the UCX set as professional(spdif-out to aes of crookwood) and the bnc(wordclock cable) is not or for other reasons?

question:Is the adat clock reliable?

Thanks in advance
alessandro

  • Registered: 2007-10-28
  • Posts: 68

Re: UCX wordclock cable problem

A quick read of the manual let me thing that the possible solution
would be to flag the option wordclock in Termination.

Can someone confirm?
However this afternon if have time to go to the studio
i'll try.

Alessandro

  • Registered: 2007-10-28
  • Posts: 68

Re: UCX wordclock cable problem

Just tried with wordclock cable connected and termination,but same result.
In the total mix window audio is present at spdif out(set as professional spdif to aes) but the crookwood da(aes input of the consolle)
doesn't play anything.The crookwood is asynchronous could be this the reason?

Revert to adat-in as the clock,audio at spdif-out is still there and can be listened.

Really don't know........

  • Registered: 2007-10-28
  • Posts: 68

Re: UCX wordclock cable problem

No one?Any suggestion?If someone had similar experiences,on how is better to clock or
if that worth to clock using a dedicated wordclock cable, would be really great and usefull
to share those with me.

Regards
Alessandro

  • From: Germany
  • Registered: 2007-04-10
  • Posts: 9,560

Re: UCX wordclock cable problem

Must admit I have difficulty understanding the setup.. ;-)
Why don't you take it apart for testing, beginning with the SDPIF?
Please provide more details on the DA converter also.


Regards
Daniel Fuchs
RME

Regards
Daniel Fuchs
RME

RME Support's Website

6 Reply by alemass (edited by alemass 2012-12-12 17:29:44)

  • Registered: 2007-10-28
  • Posts: 68

Re: UCX wordclock cable problem

Set up is easy explained:
I use the ucx and totalmix to drive the signal where I want.
1st to the mytek 8x192 just one adat channel that go to outboards eq-comp-limiter
back to adat input that now is monitored/routed by the Crookwood DA(spdif professional)
to speaker.

Alessandro

  • Registered: 2007-10-28
  • Posts: 68

Re: UCX wordclock cable problem

CROKWOOD AD_DA(from RME UCX SPDIF for monitoring)
http://www.crookwood.com/~crookwood/
   
Technology: SRC isolated converters working off their own internal clocks, balanced analogue stages, minimal configuration
    0dBFs: fixed at +18dBu
    S/N: -120dBA A weighted. -117dBu 20Hz-20KHz
    THD: -105dB, 20Hz- 20KHz 0.1dB below clipping
    External ADC wordclock: 44.1 - 196KHz
    I/O levels: AES or SPDIF I/O, link selectable
    Conversion jitter: "Jitter free" IO - jitter doesn't affect THD performance

Mytek (from RME UCX ADAT OUT and IN back after analoge processing routed to the spdif out)
8X192 Specifications

Conversion:                  Linear 24 bit PCM,  128x oversampling at 44.1/48k
                                         64x oversampling at 88.2/96/176.4/192k

Conversion:                  64xDSD, 128xDSD
Optional                                       

Dynamic Range ADC:          120dB (A weighted)

THD+Noise ADC:                 -106dB (<0.0004%)

Dynamic Range DAC:          123dB (A weighted)

THD+Noise ADC:                 -110dB (<0.0003%)

Internal clock jitter:        <10picoseconds

Analog Inputs:              +4dBm balanced or unbalanced, 10kOhm, D25

Analog Outputs:           +4dBm balanced or unbalanced, D25 plus 2 XLR

Digital intputs:              8 Hi-speed (25-200kHz) AES/EBU or SPDIF D25

Digital outputs:              8 Hi-speed (25-200kHz) AES/EBU or SPDIF D25

The pinouts of D25 I/O connectors are compatible with Protools HD (tm) Digisnakes (tm)

External Sync.:               Wordclock in and out.  Wordlock Out can be
                                         used as house clock: 15 LS TTL loads max.

Worclock outputs.:       6 separate  Wordlock Outs
                                         to be used as house clock: 15 LS TTL loads max.
                                         Can be terminated.

Headphone out.:           Hi-current (500mA), hi-speed, stereo

Mix buss :                       2x4 pairs or 8 mono, true analog mix buss

Stepped attenuator:     24 steps assignable to phones and XLR outs
                                                                             
Mains:                             100/115V-220/240V 50/60Hz switchable

These are the spec.
ALessandro