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Author Topic: Has G.Inp influenced the target signal to noise margin?  (Read 6164 times)

xreyuk

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #15 on: March 31, 2015, 12:55:05 AM »
When G.INP applied to my line, I went from 5.3dB SNRM to 8.5dB SNRM at exactly the same sync speed (think i was banded).

I was interleaved at a level of around 860, and that was dropped down to 8.
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andyfitter

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #16 on: March 31, 2015, 11:30:01 AM »
Quote from: xreyuk on March 31, 2015, 12:55:05 AM
When G.INP applied to my line, I went from 5.3dB SNRM to 8.5dB SNRM at exactly the same sync speed (think i was banded).

I was interleaved at a level of around 860, and that was dropped down to 8.

Pretty much exactly the same experience here - Went from a 6.0dB SNRM to a 8.1dB SNRM when G.INP was applied, and my downstream sync stayed locked at 66999. Am using an unlocked HG612 on latest firmware.

I've seen the 66999 figure mentioned in a few places - I guess its one of the levels of banding? Is it likely to be removed now I have SNRM to spare?
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spudgun

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #17 on: March 31, 2015, 10:09:04 PM »
Quote from: andyfitter on March 31, 2015, 11:30:01 AM
Quote from: xreyuk on March 31, 2015, 12:55:05 AM
When G.INP applied to my line, I went from 5.3dB SNRM to 8.5dB SNRM at exactly the same sync speed (think i was banded).

I was interleaved at a level of around 860, and that was dropped down to 8.

Pretty much exactly the same experience here - Went from a 6.0dB SNRM to a 8.1dB SNRM when G.INP was applied, and my downstream sync stayed locked at 66999. Am using an unlocked HG612 on latest firmware.

I've seen the 66999 figure mentioned in a few places - I guess its one of the levels of banding? Is it likely to be removed now I have SNRM to spare?

66999 seems to be the max sync you can get on a HG612 that hasn't been updated to the very latest firmware, as i've seen quite a few people who are stuck there whilst on the v28 firmware. Updating to the v30 firmware will probably fix it
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NewtronStar

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #18 on: March 31, 2015, 10:47:14 PM »
As Bald_Eagle1 says there is no reason to be still using old firmware on the HG612 you are just holding back your line performance.
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AArdvark

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #19 on: April 01, 2015, 02:13:32 AM »
FYI, switched from Zyxel 8324 to HG612 to test theory. Apart from a 5M lower max attainable the 66999/20000 sync is unchanged. Leaving it running to see what happens.
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kitz

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #20 on: April 01, 2015, 02:36:16 AM »
Cheers Aardvark, I'd be interested to see if anything does happen
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andyfitter

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Re: Has G.Inp influenced the target signal to noise margin?
« Reply #21 on: April 01, 2015, 07:22:09 AM »
Quote from: spudgun on March 31, 2015, 10:09:04 PM
66999 seems to be the max sync you can get on a HG612 that hasn't been updated to the very latest firmware, as i've seen quite a few people who are stuck there whilst on the v28 firmware. Updating to the v30 firmware will probably fix it

Im pretty sure I'm on the latest firmware? From the router admin webpage

Product type   EchoLife HG612 
Device ID   8853D4-21530315408K29001810
Hardware version   VER.B
Software version   V100R001C01B030SP08
Firmware version   A2pv6C038m.d24j
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