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A Cheap & Easy Method for Measuring Optical S/PDIF Audio ...
https://allenwp.com/blog/2021/06/22/a-cheap-easy-method-for-measuring-optical-s-pdif-audio-dac-latency/
A Cheap & Easy Method for Measuring Optical S/PDIF Audio DAC Latency In a previous post, I described a method of measuring HDMI audio DAC latency using a computer’s sound card and a Wii U . This post describes a similar method for measuring optical S/PDIF audio DAC latency using a cheap and widely available USB audio DAC as a signal generator.
Review and Measurements of iFi iPurifier S/PDIF Digital ...
https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-ifi-ipurifier-s-pdif-digital-audio-filter.2189/
Measurements. Since this is a S/PDIF device and J-Test was designed for exactly this application, let's start with that. I programmed my Audio Precision Analyzer to output J-test while jittering the digital output to the tune of 4 Khz sine wave. I pushed that into Topping D30 DAC (review here: https://audiosciencereview.com/forum/index.php?threads/topping-d30-dac …
idiots guide to impedance + spdif measurement | diyAudio
https://www.diyaudio.com/community/threads/idiots-guide-to-impedance-spdif-measurement.131585/
I have a sound card - m-audio audiophile 192. It outputs SPDIF over a coax connection. I have a DMM and oscilloscope. Can someone tell me how can I measure the SPDIF output and what it should be... ie 0.5V square wave, sine wave, should it be 2V and so on..... yes I am a beginner.... Second: Same SPDIF - and the 75R impedance question.
Is measuring square wave on spdif cable possible? | Page 7 ...
https://www.diyaudio.com/community/threads/is-measuring-square-wave-on-spdif-cable-possible.250803/page-7
Therefore S/PDIF is not digital signal, but high speed analog or RF signal. Clock is extracted from S/PDIF signal from edges of transitions and extraction is again analog proces. Any wandering of those edges in time domain will cause timming errors, known as jitter. Right data without bit errors, but arrived at wrong time.
Is measuring square wave on spdif cable possible? | Page 5 ...
https://www.diyaudio.com/community/threads/is-measuring-square-wave-on-spdif-cable-possible.250803/page-5
All depends on what you want to measure. It is totally excessive (and "more is better" is not a rally good rule here) for audio purposes. It is totally insufficient for measuring microwave interference. So, again, what is it that you want to determine? If you get music out of your DAC without dropouts, then the cable works. •••
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