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Increasing Cable TV signal strength MoCA
Michael A. Terrell wrote:
Joerg wrote: http://www.cablefax.com/ct/sections/...ier_44237.html Quote "The Multimedia Over Coax Alliance (MoCA) provides a standard ..." then Quote "The maximum cable distance supported between the root and the last outlet is 300 feet, with a maximum attenuation of 25 dB". And this is for MoCA, not just cable TV. MoCA is home networking, hence the 300 foot figure. A drop at +10 dBmv already allows a 25 dB loss for the cable modem, since they are designed to work to -15 dBmv. That webpage also mentions verifing that a "drop amplifier does not block Moca". In other words, it's home networking for multimedia devices and has nothing to do with the length of the cable drop. It is to allow customers to stream audio and video within their home, and use services like Netflix & Hulu on their TV sets. It is the modern cable TV, like it or not. Companies not playing will likely be packing some day. Personally I doubt it'll do much for home networking, at least not appliance control. Computing, yes, and that's the new game in town. Cable companies offering "all-in-one" packages where you get phone, Internet, TV and all that from the "company store". Pretty pricey, last time I looked it was $99/mo and that only for the first year. Probably goes up afterwards. -- Regards, Joerg http://www.analogconsultants.com/ |
Increasing Cable TV SIGNAL LEVELS
On 2/10/2012 8:11 PM, Jeff Liebermann wrote:
On Fri, 10 Feb 2012 11:47:54 -0600, wrote: The Box is a CISCO RNG100 Only data I know how to get is; Tuner 537.00 Mhz 2dbmv TDC 75.25 Mhz 5dbmv RDC 20.00 Mhz 30.0dbmv Yes 30.0 It's the same as the Cisco Explorer 1540C with some features removed by Comcast. http://www.cincinnatibell.com/shared_content/pdf/tv/exp1540_uguide.pdf How to get into the diagnostics: Press and hold SELECT on front of unit until the MAIL light starts to flash, then press INFO. Or Press and hold PAUSE on remote until MAIL light starts to flash (around 10-15 seconds), then press PAGE-UP (-). On some remotes, PAGE (+) might need to be used instead. See if you can excavate the SNR numbers. Maybe there's RF garbage on the systems (oscillating distribution amp, ingress, whatever, etc). Hi Jeff, I don't seem to be able to follow your directions, I don't think I have enough buttons. To get the info I posted, Push and hold the power button until the power light blinks, then push power again and the info screen comes up. I don't know what the MAIL light is, I don't have a select button nor a INFO button. Hey started pushing buttons on the remote, found I can scroll through 15 pages off stuuf I don't have a clue about. Got some "RF Statistics on page 5" Current FDC Freq. 75.250 Level 5 dbmv S/N 29db Errs/Ave 0/0 Current Qam Freq. 513 Mhz Level -1dbmv S/N 35db Errs/Ave 11/0 or 11/1 or 11/3 but mostly 11/0 That's all I can see. Mikek |
Increasing Cable TV signal strength MoCA
Joerg wrote: Michael A. Terrell wrote: ? Joerg wrote: ?? http://www.cablefax.com/ct/sections/...ier_44237.html ?? ?? Quote "The Multimedia Over Coax Alliance (MoCA) provides a standard ..." ?? ?? then ?? ?? Quote "The maximum cable distance supported between the root and the ?? last outlet is 300 feet, with a maximum attenuation of 25 dB". And this ?? is for MoCA, not just cable TV. ? ? ? MoCA is home networking, hence the 300 foot figure. A drop at +10 ? dBmv already allows a 25 dB loss for the cable modem, since they are ? designed to work to -15 dBmv. That webpage also mentions verifing that a ? "drop amplifier does not block Moca". In other words, it's home ? networking for multimedia devices and has nothing to do with the length ? of the cable drop. It is to allow customers to stream audio and video ? within their home, and use services like Netflix ? Hulu on their TV ? sets. ? It is the modern cable TV, like it or not. Sigh. You never back down, even when you are shown that you are wrong. You are wrong and it's eating you alive. Even the title of the article in your link states: "Testing And Deployment: Making MoCA In-Home Networking Easier" and the article starts with: "Market growth and competition for enhanced video services revenue have MSOs and telcos scrambling for technology and operational advantages. In the next decade, consumer electronics with embedded Internet and IP video support will be widely available." No where does it mention a cable drop. It is a method to transmit digital data between a DVR and any TV connected to the system. Nothing more. It's no wonder you can't get a computer to run properly, when you can't even read a simple networking article like this and understand it. Show me anywhere in that article that states a 300 foot cable TV drop is required. The word drop shows up twice and the first is part of another word: 1: "Additionally, the technician can monitor the MoCA channel for bit errors based on corrected or dropped MoCA packets." ^^^^ 2: "A drop amplifier that does not bypass the MoCA spectrum." ^^^^ This means that some installations require a bi-directional amplifier to compensate for long drops just as they always have. 'Drop Amplifier' refers to a single output CATV amplifier as opposed to the multiport CATV distribution amplifiers used in apartment complexes and condos. Companies not playing will likely be packing some day. Maybe in 30 years, when tiny rural systems can't find anything cheaper on the market and upgrade in bits and pieces. YOU know all about being a cheapskate. Personally I doubt it'll do much for home networking, at least least not appliance control. Why should it? Why would your DVR need to talk to your refrigerator? It is strictly a streaming system for home Entertainment. It's been available here, for years. Hell, even my dad's Direct TV sat system w/DVR does it. Appliances don't need a TV tuner and other crap for a simple ethernet interface. Computing, yes, and that's the new game in town. Cable companies offering "all-in-one" packages where you get phone, Internet, TV and all that from the "company store". Phone and internet are delivered via a cable modem that works to -15 dBmv. Pretty pricey, last time I looked it was $99/mo and that only for the first year. Probably goes up afterwards. It goes a hell of a lot higher than that. That $99 doesn't get you basic cable, internet and phone here. Add on more tiers and hgher bandwith internet and it can pass $250 a month. You are so ignorant that it's scary. Read ALL of the page you linked to and look at the images. It is a lousy home network via coax streaming media standard and nothing more. Not that I ever expect you to be man enough to admit you are wrong. Everything is always someone else's fault. No one ever does anything right but you. The fact that you design medical electronics scares the hell out of me. -- You can't have a sense of humor, if you have no sense. |
Increasing Cable TV SIGNAL LEVELS
amdx wrote: On 2/10/2012 8:11 PM, Jeff Liebermann wrote: ? On Fri, 10 Feb 2012 11:47:54 -0600, ? ? wrote: ? ?? The Box is a CISCO RNG100 ?? Only data I know how to get is; ?? Tuner 537.00 Mhz 2dbmv ?? TDC 75.25 Mhz 5dbmv ?? RDC 20.00 Mhz 30.0dbmv Yes 30.0 ?? ? ? It's the same as the Cisco Explorer 1540C with some features removed ? by Comcast. ? ?http://www.cincinnatibell.com/shared...40_uguide.pdf? ? ? How to get into the diagnostics: ? Press and hold SELECT on front of unit until the MAIL light ? starts to flash, then press INFO. ? Or ? Press and hold PAUSE on remote until MAIL light starts to ? flash (around 10-15 seconds), then press PAGE-UP (-). ? On some remotes, PAGE (+) might need to be used instead. ? See if you can excavate the SNR numbers. Maybe there's RF garbage on ? the systems (oscillating distribution amp, ingress, whatever, etc). Hi Jeff, I don't seem to be able to follow your directions, I don't think I have enough buttons. To get the info I posted, Push and hold the power button until the power light blinks, then push power again and the info screen comes up. I don't know what the MAIL light is, I don't have a select button nor a INFO button. Hey started pushing buttons on the remote, found I can scroll through 15 pages off stuuf I don't have a clue about. Got some "RF Statistics on page 5" Current FDC Freq. 75.250 Level 5 dbmv S/N 29db Errs/Ave 0/0 Current Qam Freq. 513 Mhz Level -1dbmv S/N 35db Errs/Ave 11/0 or 11/1 or 11/3 but mostly 11/0 It shows that you have a 6 dB slope, and the high end is 1 dBmv below the standard level. It also shows a lot of errors in the recovered data. QAM is the digital TV signal. Unscrambled channels are referred to as Clear QAM -- You can't have a sense of humor, if you have no sense. |
Increasing Cable TV SIGNAL LEVELS
On 2/12/2012 10:27 AM, amdx wrote:
On 2/10/2012 8:11 PM, Jeff Liebermann wrote: On Fri, 10 Feb 2012 11:47:54 -0600, wrote: The Box is a CISCO RNG100 Only data I know how to get is; Tuner 537.00 Mhz 2dbmv TDC 75.25 Mhz 5dbmv RDC 20.00 Mhz 30.0dbmv Yes 30.0 I just noted I didn't have a picture on ch 42. I went to the RF page, my 537 Mhz numbers were Level 6dbmv S/N 0 db Errs/Ave 0/7 changed to later 0/1742 Status Unlocked VS. When it was working Level -1dbmv S/N 35db Errs/Ave 11/0 or 11/1 or 11/3 but mostly 11/0 Status Locked Mikek |
Increasing Cable TV SIGNAL LEVELS
In message , Michael A.
Terrell writes amdx wrote: On 2/10/2012 8:11 PM, Jeff Liebermann wrote: ? On Fri, 10 Feb 2012 11:47:54 -0600, ? ? wrote: ? ?? The Box is a CISCO RNG100 ?? Only data I know how to get is; ?? Tuner 537.00 Mhz 2dbmv ?? TDC 75.25 Mhz 5dbmv ?? RDC 20.00 Mhz 30.0dbmv Yes 30.0 ?? ? ? It's the same as the Cisco Explorer 1540C with some features removed ? by Comcast. ? ?http://www.cincinnatibell.com/shared...40_uguide.pdf? ? ? How to get into the diagnostics: ? Press and hold SELECT on front of unit until the MAIL light ? starts to flash, then press INFO. ? Or ? Press and hold PAUSE on remote until MAIL light starts to ? flash (around 10-15 seconds), then press PAGE-UP (-). ? On some remotes, PAGE (+) might need to be used instead. ? See if you can excavate the SNR numbers. Maybe there's RF garbage on ? the systems (oscillating distribution amp, ingress, whatever, etc). Hi Jeff, I don't seem to be able to follow your directions, I don't think I have enough buttons. To get the info I posted, Push and hold the power button until the power light blinks, then push power again and the info screen comes up. I don't know what the MAIL light is, I don't have a select button nor a INFO button. Hey started pushing buttons on the remote, found I can scroll through 15 pages off stuuf I don't have a clue about. Got some "RF Statistics on page 5" Current FDC Freq. 75.250 Level 5 dbmv S/N 29db Errs/Ave 0/0 Current Qam Freq. 513 Mhz Level -1dbmv S/N 35db Errs/Ave 11/0 or 11/1 or 11/3 but mostly 11/0 It shows that you have a 6 dB slope, and the high end is 1 dBmv below the standard level. It also shows a lot of errors in the recovered data. QAM is the digital TV signal. Unscrambled channels are referred to as Clear QAM Presumably 75.25MHz is an analogue signal? In the UK, at least while the cable system has carried a mixture of analogues and digitals, the digitals have been run 10dB below the analogues. If 75.25MHz had been digital, it would be set at -5dBmV, so there would be a rising slope of 4dB, LF to HF. In any case, if the 513MHz digital is -1dBmV, and other HF signals are similar, that is more than sufficient for a digital set-top box. I would think it should work reliably down to around -15dBmV. If I'm right, whatever the problem is, it isn't being caused by a lack of signal level. -- Ian |
Increasing Cable TV signal strength MoCA
Michael A. Terrell wrote:
Joerg wrote: Michael A. Terrell wrote: ? Joerg wrote: ?? http://www.cablefax.com/ct/sections/...ier_44237.html ?? ?? Quote "The Multimedia Over Coax Alliance (MoCA) provides a standard ..." ?? ?? then ?? ?? Quote "The maximum cable distance supported between the root and the ?? last outlet is 300 feet, with a maximum attenuation of 25 dB". And this ?? is for MoCA, not just cable TV. ? ? ? MoCA is home networking, hence the 300 foot figure. A drop at +10 ? dBmv already allows a 25 dB loss for the cable modem, since they are ? designed to work to -15 dBmv. That webpage also mentions verifing that a ? "drop amplifier does not block Moca". In other words, it's home ? networking for multimedia devices and has nothing to do with the length ? of the cable drop. It is to allow customers to stream audio and video ? within their home, and use services like Netflix ? Hulu on their TV ? sets. ? It is the modern cable TV, like it or not. Sigh. You never back down, even when you are shown that you are wrong. Because I am not. http://publicservice.vermont.gov/con...rts_cable.html Quote "If its under 300 feet, its free to the consumer". Yes, it is as simple as that. You are within 300ft and the cable company must serve you. This is state-of-the-art. Now you'll probably declare the whole State of Vermont to be wrong? [...] -- Regards, Joerg http://www.analogconsultants.com/ |
Increasing Cable TV signal strength MoCA
On Sun, 12 Feb 2012 13:54:36 -0800, Joerg wrote:
Michael A. Terrell wrote: Joerg wrote: Michael A. Terrell wrote: ? Joerg wrote: ?? http://www.cablefax.com/ct/sections/...ier_44237.html ?? ?? Quote "The Multimedia Over Coax Alliance (MoCA) provides a standard ..." ?? ?? then ?? ?? Quote "The maximum cable distance supported between the root and the ?? last outlet is 300 feet, with a maximum attenuation of 25 dB". And this ?? is for MoCA, not just cable TV. ? ? ? MoCA is home networking, hence the 300 foot figure. A drop at +10 ? dBmv already allows a 25 dB loss for the cable modem, since they are ? designed to work to -15 dBmv. That webpage also mentions verifing that a ? "drop amplifier does not block Moca". In other words, it's home ? networking for multimedia devices and has nothing to do with the length ? of the cable drop. It is to allow customers to stream audio and video ? within their home, and use services like Netflix ? Hulu on their TV ? sets. ? It is the modern cable TV, like it or not. Sigh. You never back down, even when you are shown that you are wrong. Because I am not. http://publicservice.vermont.gov/con...rts_cable.html Quote "If its under 300 feet, its free to the consumer". Yes, it is as simple as that. You are within 300ft and the cable company must serve you. This is state-of-the-art. Now you'll probably declare the whole State of Vermont to be wrong? The whole state? Na, there's probably three sane people left. |
Increasing Cable TV signal strength
On Sat, 11 Feb 2012 05:35:37 -0800, The_Giant_Rat_of_Sumatra
wrote: On Fri, 10 Feb 2012 21:41:38 -0800, John Larkin wrote: Why are you so angry? You've been cursing and ranting here all day, flailing at everyone. This isn't healthy. All that anger will wreck your immune system and make you old fast. You'll stroke out eventually, and not have much fun meanwhile. Really. Why do you not refrain from attacking me? Oh that's right... that is your true goal. FOAD, John Larkin. And the problem with that is???? |
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