Problem with two-channel measuremente

[vadimal12]

Hello! version 5.20.14. - previously everything worked fine. But, it is not clear for what reason I cannot measure now with "use loopback as timing reference". There is no "ref output" master pulse. Moreover, in the "use loopback as timing reference" mode, everything works fine.

 

[John Mulcahy]

it is not clear for what reason I cannot measure now with "use loopback as timing reference"

Works for me. How is your Measure dialog configured?

 

[vadimal12]

It used to work for me too ))).

 

[John Mulcahy]

Is the connection from L out to R in OK?

 

[vadimal12]

Да, потому что, когда я измеряю акустически, главный импульс поступает на канал L

 

[vadimal12]

Yes, because when I measure acoustically, a master pulse goes to channel L

 

[John Mulcahy]

The loopback gets the same sweep signal as the measurement channel. If you are not seeing the signal on the R input there's probably a problem with the connection.

 

[vadimal12]

The loopback gets the same sweep signal as the measurement channel - yes.
but after all, when measuring "use acoustic timing reference" everything works correctly. When measuring "use loopback as timing reference", I do not make any changes to the switching (and I do not change anything from the hardware).

 

[John Mulcahy]

I do not change anything from the hardware

Really? Using loopback as a timing reference requires a loopback cable from the reference output to the reference input, did you make that connection?

 

[vadimal12]

Yes, I have installed it, I take the feedback signal from the speaker terminals

 

[John Mulcahy]

Are you taking it to the correct place? Acoustic timing reference listens on the measurement input, loopback timing reference listens on the reference input.

 

[vadimal12]

Thank you very much for your support. I'll go figure it out.

 

[dcibel]

It used to work for me too ))).
View attachment 65117

Input is a USB mic, where does loopback connect for this ?

 

[vadimal12]

Input is a USB mic, where does loopback connect for this ?

Please explain your question in more detail.

 

[dcibel]

Question is simple, where does the loopback wire go?

Input is a USB mic, single channel device.

 

[sam_adams]

Input is a USB mic, where does loopback connect for this ?

When using a USB mic your best option for a timing reference is to use an acoustic timing reference.

 

[vadimal12]

Question is simple, where does the loopback wire go?

Input is a USB mic, single channel device.

Yes, I use Dayton Audio UMM-6 USB

 

[vadimal12]

When using a USB mic your best option for a timing reference is to use an acoustic timing reference.

I have everything in order with the measurements of the USB microphone. Problems when measuring with a wired NON-USB microphone.

 

[CAAudiophile]

Not sure what soundcard your using but if you are using Focusrite it has 2 inputs l & R and 2 outputs L & R so when using the timing reference loop for example you select the L input and connect it to the L output that would be your timing reference loop. Now the R input will be your MIC and the R out put will be to the speakers/preamp. Hope this help.

 

[vadimal12]

Behringer UMC202HD. thanks, everything is already working as it should.