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Author Topic: Why is my DS SNRM So Low?  (Read 1157 times)

lewisp8

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Why is my DS SNRM So Low?
« on: March 04, 2018, 10:33:07 AM »

My US SNRM always seems to be very high often between 7.5-9 and my DS SNRM is always around 3-4.  I'm on MDWS as lewisp8. My line rate is about 84Mbs so everything seems fine i just thought it was a bit odd as they both should be about 6.
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skyeci

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Re: Why is my DS SNRM So Low?
« Reply #1 on: March 04, 2018, 10:36:28 AM »

you are on a huawei cab so dlm has implemented a lower DS snr profile. on lines with a lower sync it can increase speed.

j0hn

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Re: Why is my DS SNRM So Low?
« Reply #2 on: March 04, 2018, 01:21:54 PM »

Quote
i just thought it was a bit odd as they both should be about 6.
As mentioned on Huawei cabinets the DS SNRM can be lowered to help increase sync. Now it can be a 6, 5, 4 & 3dB target. Your line looks like it is on a 4dB target, though there's only a couple days data so hard to tell.

The US SNRM will be higher than 6dB when you are at max sync. This is referred to as having "spare" SNRM.
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