USB Port Test - Focusrite Scarlett 2i4

Discussion in 'Measurements (unsanctioned)' started by Luckbad, Sep 17, 2017.

  1. Luckbad

    Luckbad Basshead - Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    1,565
    Trophy Points:
    113
    Location:
    Laguna Hills, CA
    Home Page:
    This is a test I performed a couple of years ago. I swore up and down that some of my USB ports were total crap with my Scarlett 2i4, so I did some measurements out of every USB port I had on my motherboard at the time.

    While it's mostly not very useful, one port did emerge as clearly better than all the rest. And it was repeatable.

    Thought this might be a fun distraction for 3 minutes.

    RightMark Audio Analyzer test

    Testing chain: External loopback (line-out - line-in)
    Sampling mode: 16-bit, 96 kHz


    Summary
    summary.PNG


    Frequency response
    fr.png

    Noise level
    ns.png

    Dynamic range
    dr.png

    THD + Noise (at -3 dB FS)
    thd.png

    Intermodulation distortion
    imd.png

    Stereo crosstalk
    ct.png
     
    Dino, Stride and jayeshrc like this.

  2. Armaegis

    Armaegis Friend

    Friend Contributor
    Joined:
    Sep 27, 2015
    Likes Received:
    2,380
    Trophy Points:
    113
    Location:
    Winnipeg
    Bottom-Left also seems to be an odd FR outlier. Is it discernible if you expand the scale of the FR charts and separate the three reds?
     
  3. Grahad2

    Grahad2 Friend

    Friend
    Joined:
    Jan 26, 2017
    Likes Received:
    860
    Trophy Points:
    93
    Location:
    Singapore
    What motherboard is that?
     
  4. Luckbad

    Luckbad Basshead - Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    1,565
    Trophy Points:
    113
    Location:
    Laguna Hills, CA
    Home Page:
    I believe this was on my ASUS P8Z68-V PRO motherboard based on the timeframe.

    I can try to get Rightmark installed on Windows 10 but I was having issues (would need it to zoom properly). Will try tonight.
     

Share This Page