Results 1 to 6 of 6

Thread: AGC gone from 80 to 2, should I be worried.

  1. #1

    Title
    Forum Supporter
    Donated Member
    Join Date
    Jun 2010
    Location
    Norfolk, UK
    Posts
    591
    Thanks
    377
    Thanked 170 Times in 104 Posts

    AGC gone from 80 to 2, should I be worried.

    When I last had a problem with my setup, which turned out to be the skew, the AGC was around 80 (both before and after I adjusted the skew).

    A few days ago we lost the signal for about 30 seconds (wasn't raining, and rain doesn't usually affect it anyway unless it's a cloudburst), haven't lost it since.

    Looking at random channels over the past few days , the AGC is always the same, it's only 2% compared to the 80% it used to be at.

    Since I last fixed my skew problem until a few days ago, I hadn't bothered checking the signal strength as everything was working fine.

    Should I be worried with only 2% AGC (it's more that it used to be 80% that's made me query it), or should I simply put loosing the signal down to a fluke with the weather?

    My SNR is now also always 100%.

    (I am running vix 5.2.043, not the latest version)

    For example, here are two screenshots taken today

    screenshot_20191112122126.jpgscreenshot_20191112122607.jpg

    and here is a screenshot taken a few months ago

    unicable.PNG



    Many thanks

  2. #2

    Title
    Forum Supporter
    Donated Member
    Join Date
    Jun 2010
    Location
    Norfolk, UK
    Posts
    591
    Thanks
    377
    Thanked 170 Times in 104 Posts
    Just updated to ViX 5.3.009 and it's the same

  3. #3
    twol's Avatar
    Title
    ViX Beta Tester
    Join Date
    Apr 2012
    Posts
    5,570
    Thanks
    740
    Thanked 1,902 Times in 1,455 Posts
    Which receiver is it????????????
    Gigablue Quad 4K & UE 4K
    .........FBC Tuners:
    ------------------> DUR-Line DCR 5-1-8-L4 Multiswitch to 1.5M dish(28.2E)
    ------------------> Spaun SUS 5581/33 NFA Multiswitch to 80 cm dish(19.2E)
    .......................> FBC & DVB-S2X into 90cm dish (27.5W) Opticum robust Unicable LNB
    Edision Osmio 4K+, Zgemma H9Combo+Twin, Octagon SF8008, Multibox using Legacy ports on multiswitches
    Zgemma H9 C/S into Giga4K

  4. #4

    Title
    Forum Supporter
    Donated Member
    Join Date
    Jun 2010
    Location
    Norfolk, UK
    Posts
    591
    Thanks
    377
    Thanked 170 Times in 104 Posts
    GiGaBlue HD-ULTRA-UE

  5. #5
    twol's Avatar
    Title
    ViX Beta Tester
    Join Date
    Apr 2012
    Posts
    5,570
    Thanks
    740
    Thanked 1,902 Times in 1,455 Posts
    As long as you are receiving without issues, I wouldnt worry
    Gigablue Quad 4K & UE 4K
    .........FBC Tuners:
    ------------------> DUR-Line DCR 5-1-8-L4 Multiswitch to 1.5M dish(28.2E)
    ------------------> Spaun SUS 5581/33 NFA Multiswitch to 80 cm dish(19.2E)
    .......................> FBC & DVB-S2X into 90cm dish (27.5W) Opticum robust Unicable LNB
    Edision Osmio 4K+, Zgemma H9Combo+Twin, Octagon SF8008, Multibox using Legacy ports on multiswitches
    Zgemma H9 C/S into Giga4K

  6. The Following User Says Thank You to twol For This Useful Post:

    Ojustaboo (19-11-19)

  7. #6
    adm's Avatar
    Title
    Forum Supporter
    Donated Member
    Join Date
    Sep 2014
    Location
    Southend on Sea, UK
    Posts
    833
    Thanks
    29
    Thanked 301 Times in 239 Posts
    Quote Originally Posted by Ojustaboo View Post
    Just updated to ViX 5.3.009 and it's the same
    What is the AGC (Automatic Gain Control) figure actually indicating? Traditionally an AGC attempts to normalise the input to a fixed level for the following stages hence a high input and a low gain applied and conversly a low input and a high gain applied.
    If you have improved the level of your input signal then an AGC would apply a lower gain. This is perhaps what the AGC figure on the box is showing.
    Last edited by adm; 18-11-19 at 21:36.
    Xtrend ET10K, 2 x satellite tuners 28.2 (UK Freesat channels), 2 x hybrid (UK Freeview channels)

  8. The Following User Says Thank You to adm For This Useful Post:

    Ojustaboo (19-11-19)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.