send a pure tone at full scale from my DAW

No, not full scale, set a 1K tone at your operating reference level.
TV and Film use -20dBFS Music uses -18dBFS, others use -14dBFS

When you loop the tone back to the D/A the reading should be one of the above youve used.

Does your DAW have analog output adjustments????
Does it have input adjustments???

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The Mixing Engineer's Handbook
by Bobby Owsinski "
Mastering Audio: The Art and the Science
by Bob Katz "

This is the best education anyone can get for under $100.00 USD

Thanks for the swift response.

Does your DAW have analog output adjustments????
Does it have input adjustments???

No it doesn't as such as it is not tied to any specific hardware (I use SEQUOIA). However, my external converter (Lavry) have such adjustments. In fact, I can also use the sine generator of the external digital board (DM2000 here).

Could you please confirm the voltage measurement has to be done between Pins 1&2, and not between pins 2&3 (twice the voltage)?

Thanks!

Best,
Thomas

In fact, I can also use the sine generator of the external digital board (DM2000 here).

The tone should come from the source of the audio playback.

Could you please confirm the voltage measurement has to be done between Pins 1&2, and not between pins 1&3 (twice the voltage)?

If you are pin 2 hot:
I believe it was 2 & 3, Im drawing a blank now, your measuring A/C voltage
between + and -, not ground. I cheat and use an XLR to TRS adapter, and measure across tip and sleeve.
1&2 and 1&3 should measure equally 1/2 the voltage each. Yes so it would be the one that has twice the voltage.

The tone should come from the source of the audio playback.

Agree, but it is all the same in my setup as all tracks are sent in MADI from Sequoia to the DM2000 to the Lavry, so there is not DAAD conversion between the DAW and the dig mixing desk.

If you are pin 2 hot:
I believe it was 2 & 3, Im drawing a blank now, your measuring A/C voltage
between + and -, not ground. I cheat and use an XLR to TRS adapter, and measure across tip and sleeve.
1&2 and 1&3 should measure equally 1/2 the voltage each. Yes so it would be the one that has twice the voltage.

Yes, there was a type that I have edited before you sent your latest post. I meant between 2&3. So, just to be crystal clear:

- I send a -18dBFS 1kHz tone from Sequoia or the DM2000
- I adjust the output level so that I read 1,23V between pins 1&2 (rpt 1&2)

What about the AD calibration now?

Thanks!
Thomas

- I adjust the output level so that I read 1,23V between pins 1&2 (rpt 1&2)

NO, between 2&3 on XLR, I just verified this on my PTHD

Agree, but it is all the same in my setup as all tracks are sent in MADI from Sequoia to the DM2000 to the Lavry, so there is not DAAD conversion between the DAW and the dig mixing desk.

The SOURCE of audio should generate the reference tone. Send a tone from the DAW through all digital paths until you reach the D/A. Make your adjustments at the D/A, do you need a -18dBFS file??? To play back from the DAW???

What about the AD calibration now?

Thatas a function of input, take the last analog signal, and calibrate the A/D to read -18 in your DAW.

Thanks for the educated response. That makes perfect sense. Any idea regarding the other thread on the mastering forum?

Best,
Thomas