REW Testing and USB cable lengths

I am new to REW and this forum so please bear that in mind! I am using REW to assist in the creation of DSP FIR files in my Eversolo DMP-A8 Network Streamer/DAC within my two channel stereo system.

The convenient location for my laptop, Umik -1 microphone (Input) and Eversolo DMP-A8 (Output) requires a USB cable length of 3M for the microphone to laptop and 8M for the Eversolo DMP-A8 to the laptop. All appears to be working correctly but will these cable lengths have a negative impact on the sound quality and the accuracy of REW?

I can make the connections very much shorter if I position the laptop within the main listening zone i.e. between speakers and listening position but this is not as convenient.

Thank you in advance

skid00 said:

If there's a problem with cable length, you will get dropouts during the frequency sweep.

I had problems with cables around 5 meters length. It will vary with the quality of the cable.

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Thanks - I will watch out for dropouts. I'm just running trials initially to get used to REW so I should know where I stand before doing "real" readings