RME ADI-2/4 Pro SE - Auto-measured with Multitone

[DrCWO]

Measured with Cosmos ADC, clock drift between these was about 10ppm.

Very cool, really appreciate you work
Maybe I'm missing something, but where can I see the clock drift

 

[pkane]

Very cool, really appreciate you work
Maybe I'm missing something, but where can I see the clock drift

In detailed report or on the status bar:

 

[DrCWO]

In detailed report or on the status bar:

View attachment 356117

Wow, great
will give it a try if I‘m back and see how my old RME ADI-2 Pro behaves in comparison to my new ADI-2/4.
thank‘s a lot. Great work

 

[Rja4000]

In detailed report or on the status bar:

View attachment 356117

How do you measure that ?

 

[pkane]

How do you measure that ?

By measuring frequency differences between test and measured signals.

 

[Rja4000]

By measuring frequency differences between test and measured signals.

Thanks !
I was wondering what you were exactly measuring.
I do the same
I also measure the % of signal energy in adjacent bins vs peak bin when using no window FFT.
That is mainly to validate if "no window" can be used.

 

[soundnerdie]

Something that just popped up on my test bench, first test out of the box. You can compare it to Amir's result:

View attachment 356096

Measured with Cosmos ADC, clock drift between these was about 10ppm.

Thanks, @pkane. Can you tell me which input voltage was used? Also, what was the volume on the DO300 when you tested it?

 

[pkane]

Thanks, @pkane. Can you tell me which input voltage was used? Also, what was the volume on the DO300 when you tested it?

The volume was at -0.0dB for this, output voltage just a bit over 4v.

 

[DrCWO]

By measuring frequency differences between test and measured signals.

Does this mean you just count the number of samples you see from the playback device and from the recording device during a certain amount of time?

 

[Rja4000]

Does this mean you just count the number of samples you see from the playback device and from the recording device during a certain amount of time?

I think he's comparing the (measured) peak incoming frequency to the (known) outgoing frequency.

 

[DrCWO]

I think he's comparing the (measured) peak incoming frequency to the (known) outgoing frequency.

Sure, can be also done this way. It‘s just for curiosity

 

[ShiZo]

First IMD graph is SMPTE, Second is DIN, last is crosstalk (doesn't quite look like the others)