Sending images to the forum is very similar to all other forum software packages, you upload pictures to cloud storage, export it there, put the link in here and surround it with image tags.

Look here for instructions that I wrote:
https://www.tonstudio-forum.de/blog/ind … rum-EN-DE/

Do each of your external devices have ADAT IN ?
Then you can make the RME device to clock master and all external devices get the clock from RME.

Set RME device to clock master: clock mode "internal" in  RME driver settings dialog.
Then you need TOSLINK cables from the RME device to each of the other devices for the purpose of clock transmission.
On each of the other devices you need to configure the device to get the clock from its ADAT IN port.

> Yes, of course! Both Apogee Rosetta 800 and Audient iD22 have ADAT i/o. Rosetta supports SMUX, too.

I had no time to lookup the devices and what ADAT ports they offer in particular.
Typically preamps have only ADAT OUT ports which makes sense if they have no analog out ports
to which such inbound digital signals could be routed to.

I do not have it in my mind what status message appears when.
But in general terms .. if the cables are working and if the settings are proper
- one side master (clock internal)
- other side slave (clock from ADAT / or whatever digital input)
it should work.

There are many threads on the forum about clocking, i.e. this, that could be helpful.
This here is a nice example of what you could do, if one external device does not have ADAT IN...
https://forum.rme-audio.de/viewtopic.ph … 47#p150847

Why I prefer to have clock at the device which is connected to the PC ?
Then you can set the sample rate in the DAW project.
This makes proper settings to the RME device via ASIO driver.
And all the external devices which are connected by ADAT can learn automatically the proper clock rate through ADAT.
So no more actions / setting changes are required at Hardware level...

Hello Matthias,

Thanks for your reply!

- I used Sommer toslink cables (https://www.thomann.de/gr/sommer_cable_ … bel_3m.htm)

Conection Example
- I connected the ADAT Output of Audient iD22 to the ADAT Input 1 of RME Digiface Usb.
- I connected the ADAT Output 1 of RME Digiface Usb to the ADAT Input of Audient iD22
- Clock Source: ADAT 1 and then Internal (while I set the clock source of Audient to optical)
- Sample Rate 44.100

- I used a tone generator as signal through my DAW.

Apologies but it's possible that I have misunderstood the Input Status panel.
Does the input status panel and Sync leds update only when there's input signal?

Thank you in advance for your time!

T.

You bought a device with a fine manual, this information is all there and in two languages: de/en

Manual, page 13:

Input Status:

Indicates presence of a valid signal at the optical input 1-4 (Lock, No Lock) and whether the signal is synchronous (Sync). The third column shows the sample frequency detected by the hardware (coarse recognition, 32 kHz, 44.1 kHz, 48 kHz etc.). In Clock Mode the clock reference is shown. See also chapter 26.1.

Manual, page 65:

26.1 Lock and SyncCheck

Digital signals consist of a carrier and the data. If a digital signal is applied to an input, the receiver has to synchronize to the carrier clock in order to read the data correctly. To achieve this, the receiver uses a PLL (Phase Locked Loop). As soon as the receiver meets the exact frequency of the incoming signal, it is locked.
This Lock state remains even with small changes of the frequency, because the PLL tracks the receiver's frequency.

If an ADAT signal is applied to the Digiface USB, the SYNC input LED starts flashing. The unit indicates LOCK, i. e. a valid input signal (in case the signal is in sync the LED is constantly lit, see below).

Unfortunately, LOCK does not necessarily mean that the received signal is correct with respect to the clock which processes the read out of the embedded data. Example]: The Digiface USB is set to 44.1 kHz internally (clock mode Master), and a mixing desk with ADAT output is connected to the ADAT input. The LED will show LOCK immediately, but usually the mixing desk's sample rate is generated internally (being Master), and thus slightly higher or lower than the Digiface USB's internal sample rate. Result: When reading out the data, there will frequently be read errors that cause clicks and drop outs.

In order to display those problems optically at the device, the Digiface USB includes Sync-
Check. It checks all clocks used for synchronicity. If they are not synchronous to each other (i.e. absolutely identical) the SYNC LED flashes. In case they are completely synchronous the LED is constantly lit. In the above example the user would have noticed quickly that the LED kept on flashing after connecting the mixing desk.

The same information is presented in the Digiface USB's Settings dialog. In the status display Input State the state of the input clock is decoded and shown as simple text (No Lock, Lock, Sync).

In practice, SyncCheck allows for a quick overview of the correct configuration of all digital devices. So one of the most difficult and error-prone topics of the digital studio world finally becomes easy to handle.

Thank for your replies!

Ineed, Mogami cables are too stiff and not very flexible. They looked very solid and I thought they would be the best option. I'm going to update them in the next weeks. Thank you very much for your suggestion. Mutec cables look fine.

To be honest, I have read the manual multiple times before posting here. I'm sorry, but as I said maybe I have misunderstood the sync operation in th  RME device.

Actually, I still don't understand which point I'm missing exactly from the manual, because I think that I have followed the instructions and my connectivity is correct. I'm going to repeat the process in a couple of hours.

Anyway, thank both of you for your help and sorry if I'm wasting your time.

T.