31-10-2022, 17:43
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#1
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cf.mega poster
Join Date: Nov 2003
Location: Oxford (area 31)
Services: 1.2Gb/100Mb, VMTV (UHD), Freesat HD, Freeview HD, SkyQ (UHD), BTtv (UHD), DAB+
Posts: 1,861
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Hub5 - errors in log
Anyone know what causes these?
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW
Dynamic Range Window violation
31 downstream channels are all between -3.6 and 1.1DBmV and 39-40 for SNR
5 Upsteam channels are between 40.8 and 42.5DBmV.
Download speed regular at 1140M and upload ususuall 52.8M - there are a few pre and post RS Errors with <80 maximum over 3-4 days.
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06-11-2022, 17:47
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#2
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Simples
Join Date: Jul 2009
Location: RG41
Services: 1 Gbps; Hub 4 MM; ASUS RT-AX88U; Ultimate VOLT. BT Infinity2; Devolo 1200AV
Posts: 11,955
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Re: Hub5 - errors in log
That’s one of those messages with potentially complex causes. It boils down to one thing: During initial ranging, when it sets up the channels, there is one or more channels that are not performing well and no amount of power can drive intelligible signals through.
The cause of this could be noise on the circuit, cables not screwed in tight - anything that impairs signal travel.
Btw, you also have DOCSIS 3.1 channels, one each for downstream & upstream.
__________________
Seph.
My advice is at your risk.
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08-11-2022, 17:58
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#3
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cf.mega poster
Join Date: Nov 2003
Location: Oxford (area 31)
Services: 1.2Gb/100Mb, VMTV (UHD), Freesat HD, Freeview HD, SkyQ (UHD), BTtv (UHD), DAB+
Posts: 1,861
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Re: Hub5 - errors in log
Odd one - they have not reappeared since 1 Nov.
Quote:
Originally Posted by Sephiroth
That’s one of those messages with potentially complex causes. It boils down to one thing: During initial ranging, when it sets up the channels, there is one or more channels that are not performing well and no amount of power can drive intelligible signals through.
The cause of this could be noise on the circuit, cables not screwed in tight - anything that impairs signal travel.
Btw, you also have DOCSIS 3.1 channels, one each for downstream & upstream.
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