MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
 ·Cox HSI
 ·AT&T FTTP
 ·AT&T DSL Service
| How do my signals look?
I just moved into a new home, and I share a node with an apartment complex across the way. I'm on Premier but have not seen a single speed test above 6mbps down...upload is right where it should be at 1mbps. I don't know anything about DOCSIS signal standards...
Downstream
Freq/Power: 117.000 MHz 13 dBmV
Signal to Noise Ratio: 36 dB
Modulation: QAM256
Upstream
Freq/Power: 21.104 MHz 41 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
Modulation: QAM16
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MCSE, ACSA, and a lot more |
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digiblur
Got Sipura?
Premium
join:2002-06-03
Louisiana
| said by MarkyD  :I just moved into a new home, and I share a node with an apartment complex across the way. I'm on Premier but have not seen a single speed test above 6mbps down...upload is right where it should be at 1mbps. I don't know anything about DOCSIS signal standards... Downstream Freq/Power: 117.000 MHz 13 dBmV Signal to Noise Ratio: 36 dB Modulation: QAM256 Upstream Freq/Power: 21.104 MHz 41 dBmV Channel Type: DOCSIS 1.x (TDMA) Symbol Rate: 2560 kSym/sec Modulation: QAM16 SNR is ok, not great..not bad. The signal is pretty hot though which can sometims not be a good thing. You want it between 15+ to -15 with 0 being perfect.
Upstream power is right where you want it.
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SouthWest Louisiana PC Users Group »www.swlapcug.com |
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MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
·Cox HSI
·AT&T FTTP
·AT&T DSL Service
| said by digiblur :said by MarkyD :I just moved into a new home, and I share a node with an apartment complex across the way. I'm on Premier but have not seen a single speed test above 6mbps down...upload is right where it should be at 1mbps. I don't know anything about DOCSIS signal standards... Downstream Freq/Power: 117.000 MHz 13 dBmV Signal to Noise Ratio: 36 dB Modulation: QAM256 Upstream Freq/Power: 21.104 MHz 41 dBmV Channel Type: DOCSIS 1.x (TDMA) Symbol Rate: 2560 kSym/sec Modulation: QAM16 SNR is ok, not great..not bad. The signal is pretty hot though which can sometims not be a good thing. You want it between 15+ to -15 with 0 being perfect. Upstream power is right where you want it. could that cause my cable modem speeds to be out of whack? He put an amp on the line because I have 5 outlets (even though only 2 have TVs, plus the cable modem makes three) |
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digiblur
Got Sipura?
Premium
join:2002-06-03
Louisiana
| An amp for 3 outlets? Must be really low at the tap.
Try the cable modem as the only outlet connected with no amp, no splitters.
Seems like all you should need is 3 way with the cable modem on the -3.5 leg.
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Make your Sipura/PAP2 speak. »www.voipurize.com
SouthWest Louisiana PC Users Group »www.swlapcug.com |
|
MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
·Cox HSI
·AT&T FTTP
·AT&T DSL Service
edit:
May 4th, @11:22PM
| reply to MarkyD
New values with Amp removed. Note that my download speeds jumped from roughly 4mbps to 10mbps.
Downstream
Freq/Power: 117.000 MHz 5 dBmV
Signal to Noise Ratio: 37 dB
Modulation: QAM256
Upstream
Freq/Power: 24.304 MHz 34 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
Modulation: QAM16
Edit: Just a note, this is with the splitter still in play. I can't remove the splitter because it's inside Cox's box on the side of the house and that thing is locked up tight. I unplugged the amp from power, but I can't actually get to the amp because it's in that box as well.
Edit 2: The tap is literally in my back yard, and the drop is brand new. This neighborhood is only 4 years old, I'd be amazed if there were signal problems here already. I'm not sure why he put the amp on. |
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FSR
@cox.net
| reply to MarkyD
Digiblur, MD said he has five outlets, three of which have digital services.
36dB S/N is actually very good in OKC.
If you simply unplugged the power to the amp for the before and after, based upon the readings you provided the modem is not running off the amp and the levels you posted are not consistent with the conditions. You may have a problem on the main line (transmit may actually be low), you may have a bad modem, you may have something else. The numbers just don't add up for simply unplugging an amp.
The most reliable public speedtest you can run (in my experience) is speedtest.net, to the Dallas server. This will give you a pretty good idea of whether your issues lie within the Cox OKC sphere of influence. If you put things back to their original configuration and that test shows you're not getting the speeds you should be getting, you need to get a tech out to figure out what's up. And when he's there, ask him why you need the amp. |
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CoxJimR
Premium,VIP
join:2002-01-17
Atlanta, GA | FSR, please check with your supervisor or local (Oklahoma?)l HR rep regarding posting policies for Cox employees before posting further. If you want to help, let us get you set up as a preferred poster. |
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dvd536
as Mr. Pink as they come
Premium
join:2001-04-27
Phoenix, AZ
| reply to MarkyD
said by MarkyD :New values with Amp removed. Note that my download speeds jumped from roughly 4mbps to 10mbps. Downstream Freq/Power: 117.000 MHz 5 dBmV Signal to Noise Ratio: 37 dB Modulation: QAM256 Upstream Freq/Power: 24.304 MHz 34 dBmV Channel Type: DOCSIS 1.x (TDMA) Symbol Rate: 2560 kSym/sec Modulation: QAM16 Edit: Just a note, this is with the splitter still in play. I can't remove the splitter because it's inside Cox's box on the side of the house and that thing is locked up tight. I unplugged the amp from power, but I can't actually get to the amp because it's in that box as well. Edit 2: The tap is literally in my back yard, and the drop is brand new. This neighborhood is only 4 years old, I'd be amazed if there were signal problems here already. I'm not sure why he put the amp on. Hows the quality on your video without the amp[or have you gotten your video issues fixed yet]
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When I gez aju zavateh na nalechoo more new yonooz tonigh molinigh - Ken Lee |
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MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs: | reply to MarkyD
awesome speeds tonight!!
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MCSE, ACSA, and a lot more |
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digiblur
Got Sipura?
Premium
join:2002-06-03
Louisiana
| reply to MarkyD
Don't unplug the amp and just leave it inline. Most amps don't automatically bypass, but maybe yours does.
Don't get me started on the boxes. Besides the power company for safety & fire reasons, no company is putting ornaments on my house that I can't get in. They should have nothing to hide as any filters should be at the tap.
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Make your Sipura/PAP2 speak. »www.voipurize.com
SouthWest Louisiana PC Users Group »www.swlapcug.com |
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BillRoland
McCain 2008
Premium
join:2001-01-21
Ocala, FL
clubs:
·Cox HSI
| said by digiblur :Don't unplug the amp and just leave it inline. Most amps don't automatically bypass, but maybe yours does. Don't get me started on the boxes. Besides the power company for safety & fire reasons, no company is putting ornaments on my house that I can't get in. They should have nothing to hide as any filters should be at the tap. Not to hijack the thread but Cox appears to have given up on the gray lock box here in Central Florida. I've witnessed several new installs where they didn't even bother with it, and I've seen others where they've left it unlocked after they leave.
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"Don't steal. The government hates competition." |
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BillRoland
McCain 2008
Premium
join:2001-01-21
Ocala, FL
clubs:
·Cox HSI
| reply to MarkyD
said by MarkyD : awesome speeds tonight!! What were your signals when running that test?
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"Don't steal. The government hates competition." |
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MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
·Cox HSI
·AT&T FTTP
·AT&T DSL Service
| said by BillRoland :said by MarkyD : awesome speeds tonight!! What were your signals when running that test? Downstream
Freq/Power: 117.000 MHz 13 dBmV
Signal to Noise Ratio: 36 dB
Modulation: QAM256
Upstream
Freq/Power: 21.104 MHz 40 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
Modulation: QAM16
I've got the lead tech coming back out today to check it out. |
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MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs:
·Cox HSI
·AT&T FTTP
·AT&T DSL Service
| reply to MarkyD
upstream power is down to 34 today. Tech came out to check things out, and he said all my neighbors are having serious signal issues. He looked at my logs and said my modem dropped offline dozens of times last night. He's sending the line techs out to check things out.
He mentioned that things like this can sometimes go unnoticed until a savvy user moves into the neighborhood 
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MCSE, ACSA, and a lot more |
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dvd536
as Mr. Pink as they come
Premium
join:2001-04-27
Phoenix, AZ | What modem do you have? if its a webstar POS, get a moto 51xx., that will save you lots of frustration.
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When I gez aju zavateh na nalechoo more new yonooz tonigh molinigh - Ken Lee |
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MarkyD
Premium
join:2002-08-20
Oklahoma City, OK
clubs: | It's an Arris. I don't have much of a choice since I have Cox phone... |
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BillRoland
McCain 2008
Premium
join:2001-01-21
Ocala, FL
clubs: | Your downstream power looks way too hot. I'd say they've got an amp out of balance nearby.
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"Don't steal. The government hates competition." |
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daveinpoway
join:2006-07-03
Poway, CA | Following some recent upgrades here, I was getting as much as 21 dBmv downstream power; now, it is down to around 13. My Motorola SB5120 modem didn't seem to mind, but I don't know how forgiving the Arris ones are. |
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Hoss
Sauters A Walrus
join:2000-10-05
Tulsa, OK | reply to MarkyD
Sure you have a choice..have the tech run a separate drop like I have for a Motorola HSI modem. I'm happily running both side-by-side. If you don't have a Motorola you might not have a choice, but... |
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dvd536
as Mr. Pink as they come
Premium
join:2001-04-27
Phoenix, AZ
| reply to daveinpoway
said by daveinpoway :Following some recent upgrades here, I was getting as much as 21 dBmv downstream power; now, it is down to around 13. My Motorola SB5120 modem didn't seem to mind, but I don't know how forgiving the Arris ones are. That hot of a signal can drastically shorten the life of a modem or burn it out.
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When I gez aju zavateh na nalechoo more new yonooz tonigh molinigh - Ken Lee |
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