Terayon TJ210 question in Adelphia HSI http://www.dslreports.com/forum/r8691723 en Tue, 01 Dec 2009 17:43:33 EDT Tue, 01 Dec 2009 17:43:33 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8767536 adambpsu : Good call Mac. I guess I wasn't thinking, as I have always wondered what exactly determined the lower limit in the DOCSIS standard. Thanks for correcting me on that. :)]]> http://www.dslreports.com/forum/remark,8767536 Fri, 12 Dec 2003 16:58:54 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8767504 MacLeech :
said by adambpsu See Profile:
The lower the better. He should be fine.
Wrong, if a signal level is too low it starts getting into the noise, in this case you would see this as a lower SNR on the upstream. Too low of an SNR and the receiver can't differentiate the signal from the noise.

For upstream you want the level as high as possible without getting into the region of signal variations due to weather or minor plant cable changes that would push the modem over a transmit level of 58 (or 55 depending on QAM used) dbmv. 40 - 50 dbmv is nice.

Also lower upstream levels mean the cable system is more vulnerable to ingress and noise coming from subscribers drops (since its not attenuated as much as it should be). This causes even more issues to modems with low transmit levels because then they have to compete with that noise as well.
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Adelphia - Is it working now?]]> http://www.dslreports.com/forum/remark,8767504 Fri, 12 Dec 2003 16:56:58 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8767229 adambpsu :
said by Stiv2k See Profile:
well your SNR is in range, that's good, but your downstream signal is quite high, although I believe DOCSIS supports up to 15 dB...


I would agree. However, if he is not having any problems, then I would just leave it as it is. I know, like you said, that it seems high, but he should be okay.

The lower the better. He should be fine.

All in all though, not the best signals I have ever seen. Maybe you can even get those amended even more if you have troubles?
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Adam Number Two...
"They have the internet on computers now?"]]> http://www.dslreports.com/forum/remark,8767229 Fri, 12 Dec 2003 16:29:20 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8767133 Stiv2k : well your SNR is in range, that's good, but your downstream signal is quite high, although I believe DOCSIS supports up to 15 dB...

Your upstream signal is way too low, you want that to get up in the 40's :/
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- Steve Bularca]]> http://www.dslreports.com/forum/remark,8767133 Fri, 12 Dec 2003 16:18:06 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8764595 Exceles : Ok a followup. The tech came out monday and fixed the signal issue by locating the line the modem was on and placing it on the first split.

Even since then I've had no problems.

All is well.
Thanks for all the help :)

New levels:
Tx Power 22.2 dBmV
Rx Power 13.9 dBmV
Downstream SNR 32.2 dB
Tx Frequency 34000000 Hz
Rx Frequency 573000000 Hz ]]> http://www.dslreports.com/forum/remark,8764595 Fri, 12 Dec 2003 11:31:07 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8709217 Exceles : Not sure about the freq., but I can easily find out when daylight comes tomorrow (along with 4+ degrees of warmth too!).]]> http://www.dslreports.com/forum/remark,8709217 Sat, 06 Dec 2003 18:44:27 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8705462 adambpsu :
said by MacLeech See Profile:
The highest frequency the vast majority of cable systems might use at this time is about 860 Mhz. So it doesn't matter if the splitter is rated to 900Mhz or 1000 Mhz as long as its above the highest frequency used in your local system for services you're recieving.


Ahhh. That makes sense. I never thought about how high the frequency actually. Since I never knew differently, I just always assumed since the splitter was rated for 1000 MHz, that is how high a frequency the system was using. Thanks Mac.
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Adam... Uh, someone broke the internet again!]]> http://www.dslreports.com/forum/remark,8705462 Sat, 06 Dec 2003 11:48:03 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8705429 MacLeech :
said by cheech4cs See Profile:
Also what are the Mhz on the splitters?? Correct me if I'm wrong but you want them to rate at least 1000Mhz. The standard ones/OLD ones are like 900Mhz.
The highest frequency the vast majority of cable systems might use at this time is about 860 Mhz. So it doesn't matter if the splitter is rated to 900Mhz or 1000 Mhz as long as its above the highest frequency used in your local system for services you're recieving.
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Adelphia - Is it working now?]]> http://www.dslreports.com/forum/remark,8705429 Sat, 06 Dec 2003 11:43:13 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8705402 adambpsu :
said by cheech4cs See Profile:
Also what are the Mhz on the splitters?? Correct me if I'm wrong but you want them to rate at least 1000Mhz. The standard ones/OLD ones are like 900Mhz. I was told that by a tech when the first came out. I ponder that thought because isn't the service on a loop?? Just a thought and what I've been told.


Yes, you need a splitter ranging to the 1000 MHz range. I think that they are rated 5-1000 MHz. I could be wrong too, but I thought that I remembered this correctly.

What do you mean by a "loop?"
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Adam... Uh, someone broke the internet again!]]> http://www.dslreports.com/forum/remark,8705402 Sat, 06 Dec 2003 11:40:04 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8703859 cheech4cs : Also what are the Mhz on the splitters?? Correct me if I'm wrong but you want them to rate at least 1000Mhz. The standard ones/OLD ones are like 900Mhz. I was told that by a tech when the first came out. I ponder that thought because isn't the service on a loop?? Just a thought and what I've been told.]]> http://www.dslreports.com/forum/remark,8703859 Sat, 06 Dec 2003 05:25:59 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8703164 Stiv2k : Yeah the signal is probably good coming off the tap, but it just gets crapified going through all the splits :)
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- Steve Bularca]]> http://www.dslreports.com/forum/remark,8703164 Sat, 06 Dec 2003 01:27:39 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8703106 Coolbrz :
said by Stiv2k See Profile:
ahem...20dB Rx and 2dB Tx is WAY out of the appropriate limits...and he already said he has a problem getting an IP, maybe because his singal is so bad that he can't talk to the DHCP server? sounds like a problem to me. :)


A few other tests showed different, which is why I said what I did. And in his post,

quote:
First I had the router connected to it, but it wouldnt get an IP.

Then I connected the laptop to it, still no IP.

Finally I connected it to the desktop, and it pulls an IP in the range of 67.*.*.* something.

I get it working, then switch it to the router after I made the post and it seems to be working ok now...



I am just trying to narrow down the issue here, speed tests look good, and I too was wondering how he was maintaining a connection with the signals that he posted. I am curious as to how much it is dropping the connection. Let us know what the tech says.]]> http://www.dslreports.com/forum/remark,8703106 Sat, 06 Dec 2003 01:16:33 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8702103 Exceles : Tech is definitely coming out on Monday.

I'll see what I can do to get the modem on the first split.

if push comes to shove, I'll go outside and by trial and error get the modem line on the first split.]]> http://www.dslreports.com/forum/remark,8702103 Fri, 05 Dec 2003 23:07:29 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8701664 Stiv2k : ahem...20dB Rx and 2dB Tx is WAY out of the appropriate limits...and he already said he has a problem getting an IP, maybe because his singal is so bad that he can't talk to the DHCP server? sounds like a problem to me. :)
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- Steve Bularca]]> http://www.dslreports.com/forum/remark,8701664 Fri, 05 Dec 2003 22:20:22 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8701420 Coolbrz : I would check a few more times on those signal levels, maybe even a call in to tech support. If all seems well right now and it runs well overnight and tomorrow then you may not have an issue, if the tech still comes to the house, you may be charged for the service call if he finds nothing wrong. ]]> http://www.dslreports.com/forum/remark,8701420 Fri, 05 Dec 2003 21:50:32 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8701082 Stiv2k : WOW...those are the worst signal levels I have ever seen! :o

You need to have your cable modem come off the first split so it doesn't lose as much signal. All splitters are made to lose a certain amount of singal on them, they are marked "-3dB" on them which means you lose 3dB of signal going through that splitter.

Considering your modem goes through at least 5 splits of approximately 3-5 dB signal loss, I'm not suprised you have a downstream signal of -20dB! :) I also can't believe your modem can sync under those conditions...lol
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- Steve Bularca]]> http://www.dslreports.com/forum/remark,8701082 Fri, 05 Dec 2003 21:10:03 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8700851 Exceles : First I had the router connected to it, but it wouldnt get an IP.

Then I connected the laptop to it, still no IP.

Finally I connected it to the desktop, and it pulls an IP in the range of 67.*.*.* something.

I get it working, then switch it to the router after I made the post and it seems to be working ok now...

Speeds are up and alot better then with that TJ210. Either that modem was tired of dealing with the crappy signal, or it had just been through its service life :\

The cable is split outside about....atleast 5 times with 2 and 3-way splitters to give the house 9 outlets on 3 levels(2 in the basement, 4 on the main level, and 3 upstairs), only 3 of which are used (2 TVs and the modem, modem on main level). The house was wired this way when my parents purchased it.

I might move the modem back to the basement if I can convince my mother to let me run Cat5e all over the place so I can have the modem in the basement, with the WAN link from it to the wireless router on the main level.]]> http://www.dslreports.com/forum/remark,8700851 Fri, 05 Dec 2003 20:45:38 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8699792 Coolbrz : When you say
quote:
Just having trouble getting and keeping an IP on it


Do you mean the modem loses sync, lights start flashing or are you losing the IP on the computer?]]> http://www.dslreports.com/forum/remark,8699792 Fri, 05 Dec 2003 18:58:22 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8699333 wolfenstein9 : if those are indeed your signals measurements, then you really need a tech out there. In fact, i have never seen such horrible signal, how in the world did your modem sync up. your lines have to be balanced.]]> http://www.dslreports.com/forum/remark,8699333 Fri, 05 Dec 2003 18:12:37 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8698417 Coolbrz : »Adelphia High Speed Internet »FAQ: Acceptable cable modem signal levels.

Your signals do not look so good. ]]> http://www.dslreports.com/forum/remark,8698417 Fri, 05 Dec 2003 16:32:41 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8698166 Exceles : yeah. the old modem didnt have an internal config
The only trouble I'm having now is trying to get on the internal config page to the Event log and Status page, but that is it.

This is the speed test that I just did: »/speedtests/30···70658090

And here are my signal levels:
Tx Power 3.2 dBmV
Rx Power -20.6 dBmV
Downstream SNR 22.2 dB
Tx Frequency 0 Hz
Rx Frequency 591000000 Hz

If you would like the MAC ID, I'll PM it to you if you wish :)]]> http://www.dslreports.com/forum/remark,8698166 Fri, 05 Dec 2003 16:07:57 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8698096 adambpsu :
said by Exceles See Profile:
This model has the internal page, which I like.


Even though the techs are coming, if you still want to post your signal levels, feel free too. I was looking for a way to access your olds modem's info, but I couldn't find a thing.
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Adam... Uh, someone broke the internet again!]]> http://www.dslreports.com/forum/remark,8698096 Fri, 05 Dec 2003 16:00:12 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8698011 Exceles : Alright, I've gone to the local office and switched modems. New modem is a Terayon TJ615 (I was hoping they had a Motorola or something). Seems to be working worthwhile, and it speeds that I was expecting are back to normal.

It appears that my friends were right, I did need a new modem.

Just having trouble getting and keeping an IP on it, but as long as I can stay connected until the tech gets here Monday everything is good to go.

This model has the internal page, which I like.]]> http://www.dslreports.com/forum/remark,8698011 Fri, 05 Dec 2003 15:50:24 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8696984 wolfenstein9 : That's what we have field techs and tech support for. However, understandably, there are going to be a few subscribers out there who have a decent understanding of the way broadband works, and are able to troubleshoot on their own. That being said, most customers do not have access to the information and resources necessary to make a proper decision based on the conditions at the subscribers home. ]]> http://www.dslreports.com/forum/remark,8696984 Fri, 05 Dec 2003 14:08:06 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8694989 Exceles : That's fine, as long as it gets switched.]]> http://www.dslreports.com/forum/remark,8694989 Fri, 05 Dec 2003 10:17:41 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8694522 Robotics : They certainly don't know what they are talking about.......but what else is new?
If they come out and pick up your modem for a change/switch, and nothing is reported wrong with the one you have now, you will get charged a driver's fee.
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Robotics]]> http://www.dslreports.com/forum/remark,8694522 Fri, 05 Dec 2003 09:10:25 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8694478 Exceles : Also, when I was speaking with tech support last night, I asked them if I could take it by my local office to get it exchanged, and she told me no.....which I also thought was weird :\]]> http://www.dslreports.com/forum/remark,8694478 Fri, 05 Dec 2003 09:03:59 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8694453 Exceles : Adam, is there any way to check the signal levels of the TJ210?

It doesnt have an internal webpage that I know of, and I havent been able to get that docdiag utility to work.

The tech came out yesterday and said I had low signal levels and that is why my connection was slow. According to him, he fixed that at the main amplifier feed, or something to that effect. He didnt really say all the much when I was asking questions other than I had low signal.

I called them back that night because they didnt bring out another modem, and the lady I spoke with said that was as the discretion of the field tech, which I thought was kinda odd.

They setup another appointment for Monday. Maybe I'm wrong, but I dont think it should be that big of a deal to get it exchanged for another one since we pay a rental fee every month of $3.]]> http://www.dslreports.com/forum/remark,8694453 Fri, 05 Dec 2003 09:00:07 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8692588 hobgoblin : »www.neotechcc.org/modemscd/teray···leds.gif

Hob]]> http://www.dslreports.com/forum/remark,8692588 Fri, 05 Dec 2003 00:28:10 EDT Re: Terayon TJ210 question http://www.dslreports.com/forum/remark,8691760 adambpsu :
said by Exceles See Profile:
What exactly does it mean when the "cable" and "test" lights of the modem are blinking rapidly for 3+ minutes before the modem will sync?


Can we see your signal levels? That would me guess, as depending on what lights are blinking, it usually indicates that the modem is trying to find a downstream and upstream path.

quote:
Also, is it true that getting your modem switched is something that is at the discretion of the field tech who comes and does the service call?


No necessarily. You can take the modem to your local office and ask if you can trade for something else. Are you having trouble with yours? I guess you might be, but it could also be your signal levels.

Edit: Check out THIS THREAD.
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Adam...
Uh, someone broke the internet again!]]> http://www.dslreports.com/forum/remark,8691760 Thu, 04 Dec 2003 22:57:22 EDT Terayon TJ210 question http://www.dslreports.com/forum/remark,8691723 Exceles : What exactly does it mean when the "cable" and "test" lights of the modem are blinking rapidly for 3+ minutes before the modem will sync?

Also, is it true that getting your modem switched is something that is at the discretion of the field tech who comes and does the service call?]]> http://www.dslreports.com/forum/remark,8691723 Thu, 04 Dec 2003 22:53:25 EDT