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Kitz Forum
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FTTC and FTTP Issues
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Is a QLN graph supposed to look this lumpy?
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Topic: Is a QLN graph supposed to look this lumpy? (Read 363 times)
seajayshome
Member
Posts: 10
Is a QLN graph supposed to look this lumpy?
«
on:
July 12, 2024, 07:36:53 PM »
Hi - I've just activated some line stats on my VMG1312-B10A and wondered if these line stats are indicative of any problems... in particular the QLN graph is all over the place - is that normal!?
====================================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 0 day: 0 hour: 57 minutes
====================================================================================
VDSL Port Details Upstream Downstream
Line Rate: 3.328 Mbps 22.381 Mbps
Actual Net Data Rate: 3.300 Mbps 22.382 Mbps
Trellis Coding: ON ON
SNR Margin: 6.2 dB 6.7 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 6.9 dBm 9.9 dBm
Receive Power: -10.1 dBm -24.8 dBm
Actual INP: 0.0 symbols 50.0 symbols
Total Attenuation: 0.0 dB 30.3 dB
Attainable Net Data Rate: 3.300 Mbps 23.412 Mbps
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 10.4 58.6 N/A N/A N/A 25.0 73.1 90.3
Signal Attenuation(dB): 10.4 57.6 N/A N/A N/A 33.5 73.8 N/A
SNR Margin(dB): 6.1 6.2 N/A N/A N/A 6.6 6.8 N/A
TX Power(dBm): 0.2 5.9 N/A N/A N/A 8.6 3.8 N/A
====================================================================================
VDSL Counters
Downstream Upstream
Since Link time = 57 min 47 sec
FEC: 17666 8
CRC: 0 6
ES: 0 6
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
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Chrysalis
Content Team
Addicted Kitizen
Posts: 7478
AAISP CF
Re: Is a QLN graph supposed to look this lumpy?
«
Reply #1 on:
July 13, 2024, 06:22:58 AM »
Its been so long since I was regurly looking at these graphs, the only thing that stands out to me is the spiky lines on the far right, I think thats unusual.
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kitz
Administrator
Senior Kitizen
Posts: 34012
Trinity: Most guys do.
Re: Is a QLN graph supposed to look this lumpy?
«
Reply #2 on:
July 14, 2024, 11:26:35 PM »
Post deleted. Ive just realised the graphs are much larger than I originally thought.
Its too wide for me to see it all on my screen and theres more tones at higher frequencies than I originally saw, so what Id typed may have been wrong.
«
Last Edit: July 14, 2024, 11:33:06 PM by kitz
»
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Is a QLN graph supposed to look this lumpy?
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