http://www.dslreports.com/forum/SNR-readings-Motorola-SB5100-22637823 en Sat, 11 Feb 2012 01:43:40 EDT Sat, 11 Feb 2012 01:43:40 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22643085
Downstream Value
Frequency 705000000 Hz Locked
Signal to Noise Ratio 35 dB
Power Level 0 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 9
Frequency 33000000 Hz Ranged
Power Level 48 dBmV

---

Zero! ;-) Sweet!

48 on the upstream... I can't find anywhere that says what the power level for the upstream's "sweet spot" is - does anyone know?

Also, is there anything that can be done to improve the upstream from Time Warner's perspective - without blowing up the downstream like K Patterson above said?

I guess I should just count my blessings but if we were all just your average internet users we wouldn't be frequenting dslreports.com now, would we? ;-)

So what is "upstream nirvana?" I wish there was a way to know what the SNR is for the upstream...

- Marco]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22643085 Thu, 02 Jul 2009 01:21:39 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640702
I'll keep an eye on things and report any problems I have on this forum.

- Marco]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640702 Wed, 01 Jul 2009 16:21:36 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640537
My upstream power level stays at 52.0 dBmV all the time. I'm not having any problems at all with my broadband.]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640537 Wed, 01 Jul 2009 15:49:14 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640092
I went into the closet and found an old cable modem amplifier that I had from Washington. Can't believe I still had it... But, instead of plugging it in (it has a power cord) - I just removed the power plug and used it like I would a splitter. Look at these readings and tell me if they are better and whether I should still call Time Warner:

Downstream Value
Frequency 705000000 Hz Locked
Signal to Noise Ratio 36 dB
Power Level -1 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 9
Frequency 33000000 Hz Ranged
Power Level 48 dBmV

---

Obviously the downstream is pretty well perfect, right? But I'm wondering about the upstream - is 48 good or am I still playing with fire?

Thanks for your help, guys!

- Marco

PS: Look at these nutty download speeds... is it getting higher because my power levels are getting better or is this just a freak accident?

]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640092 Wed, 01 Jul 2009 14:25:05 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640013
I'll go ahead and phone Time Warner right now. Thanks for the heads up - I'll post back here my experience as it transpires.

- Marco]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22640013 Wed, 01 Jul 2009 14:11:38 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639968 http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639968 Wed, 01 Jul 2009 14:02:05 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639757
Frequency 705000000 Hz Locked
Signal to Noise Ratio 36 dB
Power Level 14 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 9
Frequency 33000000 Hz Ranged
Power Level 50 dBmV

14 is still hot but within spec, correct?

Maybe I should split it one more time? How do my readings look to you now? Also, do I need to ground the splitter - it has a ground screw... I assume I have to - but right now - I don't have it grounded.

Thanks so much for your help!

- Marco

PS: wow, some great download speeds, eh?

]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639757 Wed, 01 Jul 2009 13:24:39 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639361
I'll report back.

:-)

- Marco]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22639361 Wed, 01 Jul 2009 12:08:58 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22638433
Thanks for the information, man! No amp on my line AND no splitter. Are you saying I should use a splitter and see if that helps my downstream calm down?

- Marco]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22638433 Wed, 01 Jul 2009 08:06:34 EDT http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22638329
If you don't have an amp, I'd call TWC ASAP and get someone to come out and investigate.
--
I swear, some people should have pace-makers installed to free up the resources. Breathing and heart beat taxes their whole system, all of their brain cells wasted on life support.-two bit brains, and the second bit is wasted on parity! ~head_spaz]]> http://www.dslreports.com/forum/Re-SNR-readings-Motorola-SB5100-22638329 Wed, 01 Jul 2009 06:56:23 EDT http://www.dslreports.com/forum/SNR-readings-Motorola-SB5100-22637823
I just recently signed up for Road Runner's service - I have the 15/2 service that I believe is a recent addition to the Road Runner lineup in my area. Previously to my recent move, I had Verizon FIOS and the 20/20 package. This is not my first time on cable connectivity - I had Comcast (or was it Cox - can't remember now) up in Washington State and Adelphia (when I moved to SoCal) before I moved to FIOS. Not sure why I'm telling everyone this... ;-)

My speedtest as of 9:49 PM, Tuesday:

»www.speedtest.net/result/507500775.png

As you can see, my speeds are good (and better then what I'm provisioned for on the downstream) although they change drastically depending on the time of day (to be expected - not complaining).

But, here is what I'm wondering. I have a Motorola SB5100 that I purchased when I was in Washington with Comcast. It served me good with them, and it moved with me to Socal and lived on the Adelphia network right up until FIOS moved to my neighborhood. With my recent move, it now sits on the Road Runner network... When the installer came to my house last week, he started installing some modem I've never heard of and I told him I had my own - and he asked "is it a Motorola?" - I say "yes" - he looked at it and said, "this is what we used to give out before we started getting cheap" (was kind of surprised he would say that) and chuckled - and so I asked him, "is this a better modem" and he said "oh yes - you'll definitely want to use yours" - I wish I had paid more attention to what he was originally going to install (I think it started with an "A"). Anyways, I asked him about my levels and he said I'm well within spec. My modem has a direct feed (with one barrel connector) from where the cable comes onto my property. It's also a very short distance - if there was no wall where my modem is located I could literally touch the MPOE where the cable from Time Warner originates.

Now my question. It looks like my downstream power level value is NOT in spec - but I'm not having problems with dropped packets or loss of connectivity. I do tons of remote administration and my SSH connections are still up in the morning, etc. (although, TCP is resilient protocol - I may be dropping packets and just don't know it) - but I want to know if I'm in for potential problems with the following readings that I'm getting off the SB5100:

Downstream Value
Frequency 705000000 Hz Locked
Signal to Noise Ratio 36 dB
Power Level 18 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 9
Frequency 33000000 Hz Ranged
Power Level 47 dBmV

---

As you can see, my upstream is great. It fluctuates between 47 and 50 dBmV depending on the day - well within spec and at 50 - at the high end of the spec (great!). But, my downstream is out of spec and according to what I've read - it's power level should be between -15 to 15 dB and mine is 18 dB.

So, what does that mean? Can it be fixed? Should I be worried about future issues? Is the "-15 to 15 dB" old specs and there are newer specs being used?

Hoping some of you cable experts can help me understand my readings a little better!

Thanks in advance,

- Marco (Redlands, CA - 92374)]]> http://www.dslreports.com/forum/SNR-readings-Motorola-SB5100-22637823 Wed, 01 Jul 2009 01:05:16 EDT