Low upstream power level. 1 is simply not available on my package.
Low upstream power level. . Modem is connected directly to the test socket. The G36 provides Wi-Fi speeds up to 3000 Mbps for gaming, streaming, or working at top speeds. Arris customer support requests that the upstream power level needs to be >45. If the upstream input power level is increased, then cable modems on your HFC network increase their upstream transmit power level. 26. Forum discussion: Every time I call up Comcast HSI support they always tell me my upstream power level is too low. The term decibel watts is used to track power levels. Upstream power levels generally range between: +34 to +36. The CMTS tells the MODEM what level it wants to "hear". 1. I can provide the full jupyter notebook this graph is extracted According to Arris official, The power for the upload needs to be in the 45-50+ dBmV range depending. Arris points at the upstream power level of about 40dBmV as the problem, and says that's beyond Arris' control. My router (Netgear Nighthawk CAX80)'s diagnostic is reporting that my downstream connection's power level is poor (13. 17. Your upstream channel 2 has noise, hence 32QAM, but that's sorted at the VM end and it should be working OK. Sep 26, 2020 · Comcast's signal specs are the ones posted in the Connection Troubleshooting Tips Forum article, which says the Upstream Power Level at the modem should be between +35 dBmV and +50 dBmV. The Xfinity rental modem works reliably, but I'd prefer not to Jul 19, 2020 · I'd suggest that anyone who is currently renting a Comcast modem and is planning on switching to a CM1150V check their upstream/downstream power levels in their logs before switching. The return path (upstream) has many variables not the least of which is cable loss and splitter losses. 3 days ago · The range of signal strength can be: -15dB to +15dB officially. · actions · 2005-Dec-26 12:47 am · Nov 17, 2019 · LOW levels on upstream indicates the opposite of what folks here are saying. When looking at the admin tools, I noticed there was a single downstream channel (25) that had an incredibly low power level at -60 and an SNR of 14, which sometimes goes to 7, and the modulation says May 9, 2020 · A week or so ago, Xfinity came out and fixed the node/lines for my neighborhood. Believe it or not low transmit levels do occur just not nearly Dec 20, 2022 · He told me that I was correct, my upstream power levels are too low, in the red (all below 35) and actually my downstream power levels were "in the yellow", in the 8's and 9's. 3 dBmV. Are there some commands I can insert under the controller configuration to force the Dec 16, 2023 · Low Upstream Power Levels on SBG7600AC2. Some have a simple low, medium, and high option. 5 dB 0 0 6 Locked QAM256 555000000 Hz 7. A reset does not work 98% of the time, it may be ok for a few minutes but then it starts again. is no longer usable. 9 dBmV 41. 0 dBmV. May 12, 2022 · Downstream Power Level Cable Modems -10dBmV +10dBmV Gateways and EMTAs -7dBmV +7dBmV Downstream Signal to Noise Ratio 35dB - Upstream Power Level +35dBmV +50dBmV Upstream Signal to Noise Ratio 31dB - Upstream Receive Power -2dBmV +2dBmV . Anything above a 41 coming out of the mainline is failing if you're using 3 upstreams. So splitters decrease downstream and increase upstream signal levels. Dec 12, 2022 · Note the recorded power fluctuation and the recorded, I believe relational, packet loss and logs. I made Arris sent me another G34 modem and the same thing happens. Marked as Solution. Once I brought it down to <46, my modem has been working flawlessly. Nov 17, 2021 · Action: [Upstream Power Level] Try these actions (Click the Refresh button after each step): 1) Make sure the coaxial cable is tightly connected. Max upload speed you're going to get over HFC is about 35Mbps. 1) 52 dBmV maximum for A-TDMA, TDMA & SC-QAM (DOCSIS 3. Based on your screenshot, the connection between your modem and the Cox CMTS looks like it could be very noisy as suggested by your very low SNRs (i. Oct 8, 2022 · Your downstream levels are to high and need attenuating. But if the upstream is that high, something could be distorting it. +2dBmV. 1 Locked ATDMA 90 5120 Ksym/sec 23700000 Hz 41. stevezac. Dec 20, 2022 · Tuesday, December 20th, 2022 5:37 PM. That's because, as long as upstream power is not maxed out, what's important is not the level at the modem, it's the level (and quality) of the modem's signal as received at Comcast, which they control by adjusting You can use the values below as a guideline as to what good "signal levels" are. The adjustment options also vary. Still a bit high, one should probably google to find a high value forward path attenuator (10-15dB attenuation to go down to 10-5dBmV downstream power level). This power level can be increased to overcome noise in the RF plant. I have an account with Comcast and have recently been experiencing frequent slowdowns and disconnects. Feb 26, 2022 · Looking into the downstream bonded channels, it looks like the power levels are within spec numbers wise, but are not tight across the board, ranging from 1. Mar 9, 2021 · Why would modems have low TX power if the return path has correct levels? One of our nodes is experiencing a lot of issues with upstream performance. You might need a technician. -3. 0dB would be the optimal level for downstream power Tx level. 70 dBmV to as low as 7. 2) Remove any unnecessary splitters. Again, they are the only ones that really matter; Downstream Power Levels: -8dBmV to +10dBmV. Dec 5, 2018 · The one that breaks things for most people is the upstream power levels. Fast forward a day later, it started having issues too. Cable signal levels for all DOCSIS cable modems need to be at acceptable levels for the modem operate properly. 5dB lower should help move your upstream closer to a good range. Xfinity technician can't get it over 45 as the downstream power would be too low. Ideally, you want to see those SNRs at 36 dB or higher. One major cable company spec is 31 min 53 max. 1 dBmV. It is a challenge to build a transmitter that can send multiple carriers at the highest power level without generating too much noise of its own. Your downstream signal to noise ratios are also low, averaging 34. routerlogin. A technician needs to move your cable to a higher attenuation tap point in the cabinet. The upstream power level is controlled automatically by Comcast's equipment. At present my upstream light stays orange 98% of the time and the downstream flashes. Jan 23, 2010 · Forum discussion: I have an SB6120 and my downstream power level is -5 dBmV, but upstream is 52 dBmV. This is very goodtoo low (low 30s) is not good and too high (low 50s) is not good. 70. Jul 31, 2023 · Evaluate the power levels. Internet Access: Good. Jul 4, 2002 · Forum discussion: I check my modem's signal levels from time to time and recently I've been getting numbers like this: SnR ratio 38dB Power level 5dB upstream power level 25dB The first two #s Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power. Jul 7, 2022 · However, for power level -15 to -6 dBmV the SNR should be 33 dB or higher and for -6 to +15 dBmV the SNR should be 30 dB or higher. Mine are all below 44, so that is causing the modem to time out. Approved for use with major U. So I can't blame a bad modem This should be within a certain range, too high or too low can cause connection problems. Mar 8, 2021 · Yes, the upstream lower power limits they recommend seem to be about 10 dBmV higher than 35 dBmV. It will work higher but if it gets to say 52 or 53 it almost always fails. 0. You want as close to zero as you can get. Given your stronger downstream power levels (which are in spec), I would try an attenuator to pad out those signals. The upload speed is about 4Mbps but my plan calls for 20 Mbps. " What may be a possible issue is the T3 and T4 Timeouts (one set at 8:04 AM and one at 8:08 AM, does that correspond to any outages today? Locate the "Upstream" section and find the listed power level. The password is the one that you specified the first time that you logged in. Are those levels low? Can they be increased? If so, how can they be increased? I am experiencing low WiFi Signals for both my wireless Blink Camera System, and my Amazon Firesticks. Transmit power range is 32 to 51 I believe; I always forget where the low end is lol Receive power range is -10 to +12 SNR will pass at any number above 34 on the downstream and above 28 for upstream, but I always shoot for 38 or above on the downstream, anything below 38 and there IS noise in the line, acceptable noise, but still noise. Looking at the modem stats the upstream power level looks really low, only 3dBm. 0 (All Modulations) 54 dBmV maximum for 32 QAM and 64 QAM. Generally the upstream is supposed to be in the low-to-mid 40s AFAIK. I checked all the other levels and they seem to be normal based on what the Arris representative told me. The three signal levels that need to be within the acceptable level are Downstream Power Level, SNR (Signal to Noise Ratio), and Upstream Power Level. greenlakejohnny. 69 dbmV, where they should all be up around 0 dBmV. Apr 7, 2008 · 2010-Aug-3 12:49 pm. Dec 19, 2023 · I also noticed that the upstream QAM power level was even lower when connected directly to the input line (not thru the splitter). Aug 11, 2020 · 31dB. 4) Contact your service provider for troubleshooting help. Signal to Noise Ratio (SNR)- This reading should be above 25/27, but in the 30s would indicate a nice clean signal. The Comcast log was showing 49, but my CM1150V's upstream was b/t 50-53 on the same coax line. I've read that a good downstream power level is between -7 to +7 dBmV and a good upstream is between 38-48 dBmV. Upstream (Tx) Transmit Power level: This is the amount of signal transmitted by the modem to reach the receiver in the cable company head-end. 1 channels bonded. US power levels 47. This is the power level that the CMTS has instructed the cable modem to transmit at in order for the modem's signal to be received by CMTS with a power of 0 dBmV . Inability to communicate upstream shouldn't cause a cable modem to reboot, but it WILL eventually cause it to re-start the sign-on process from scratch, which can take quite some time. 1 is simply not available on my package. Aug 8, 2020 · The T25 crashes and requires power cycling once or twice a week. SNR range is 33. 4 dBmV 41. Others offer a menu with relative power, allowing you to adjust transmit power anywhere from 0% to 100% power. If the power is between -15 to -6 decibel millivolts, the Signal to Noise Ratio must not be less than 33 decibels. Tighten every F-Connector you see. When I Downstream (Rx) Receive Power Level: This is the amount of signal received by the modem from the transmitter in the cable company head-end. Note: Not all modems will allow you to view the status page and some will have different URLs to access this info. Yesterday I noticed my downstream levels still look good, however my Sep 3, 2006 · The upstream input power level at the CMTS is normally expected to be 0 dBmV. How do I adjust upstream power level? Locate the “Upstream” section and find the listed power level. The user name is admin. Upstream transmit bleeds off the least (5-42 MHz) of any frequency coming to your house with about . And sometimes my upstream will only lock 1 or 2 of my channels. 1 modem bare minimum whether renting from Cox or going 3rd party. Sep 5, 2020 · Arris says the issue is that my Upstream Bonded Channels Power Level is too low, below 45 dBmV (Mine are around 41-43 for the 4 channels I have). Share. 5-1 dB of loss per 100'. Extended upstream power allows modems to send at powers up to 61 dBmV per channel. Modems on that node report good downstream RX power +/- 3dB, but upstream TX power is around 35dB. In following the DOCSIS spec we incorporate a constant power spectral density (PSD) using a reference bandwidth of 1. I'm going to look into swapping out that 2-way splitter I have for a lower loss (-3. You need to take out 7 db worth so a 4 way if you have one. The upstream is the piece of equipment talking back to Cox. Nov 16, 2023 · Yeah, as you know, the second router shouldn't have any effect on power levels, especially as the issue was there before the router was installed. Channels 1-16 being above +10. 8 years ago Don318. New Poster • 3 Messages Messages Dec 23, 2005 · Upstream power level is regulated through commands sent by the CMTS to the cable modem, based on the strength of signal received by the CMTS. I noticed my initial upstream power levels were pretty good, mid 40s. This command displays the following transmit power values for each assigned upstream channel: Reported The three signal levels that need to be within the acceptable level are Downstream Power Level, SNR (Signal to Noise Ratio), and Upstream Power Level. Your downstream levels are bad in both cases. 8 dBmV with the recommended range being under -10 to 10). It has 8 downstream and 4 upstream channels. Experience optimal network performance with Wi-Fi 6. OFDM downstream power is +1 with SNR 43. My downstream appears fine, showing between 33 and 36 dB for SNR and -4 to -1 dBmV for Power on all 8 QAM256 streams. I suspect it was because I was underpowered. This is a graph of the Downstream Power Levels. The upstream power level in the new modem is now 57db (see screenshot below). Check the levels again after it powers up to see if levels have improved. dbmV. Each one has separate power levels and SNR listed for it. 6 dB). Disconnect the modem's power, wait five seconds and reconnect it. My downstream is -21 and upstream is 54. The 4 Channel’s Upstream Power Levels on my ARRIS SBG7600AC2 are between 44. That's because, as long as upstream power is not maxed out, what's important is not the level at the modem, it's the level (and quality) of the modem's signal as received at Comcast, which they control by adjusting 04-21-2016 11:40 AM - edited 04-21-2016 11:42 AM. Feb 3, 2023 · Depending on the manufacturer and model in question, it might be labeled Transmit Power, Transmit Power Control, Tx Power, or some variation thereof. These are classified into two types, upstream and downstream. Cable signal levels for all DOCSIS cable modems require to be within the acceptable level for the modem operate properly. Now, USUALLY my upload is 20, (which while low, is as advertised). Feb 1, 2020 · For a signal, the power level should be between -10 decibel millivolts to +10 decibel millivolts for downstream channels and between +35 decibel millivolts to 50 decibel millivolt for upstream channels. Aug 9, 2022 · To adjust the WiFi transmit power of your NETGEAR router: Launch a web browser from a device that is connected to your router's network. You could start by trying to bypass as many, if any, splitters you have between your modem and the Cable signal levels for all DOCSIS cable modems require to be within the acceptable level for the modem operate properly. Ideally, it should be as close to zero as possible. 3). On a side note, I've read on the Xfinity forums that the specific tolerance range for upstream power is: Upstream Power Level: +25dBmV to +54dBmV. 151. 4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0. 50 dBmV (the highest). If the upstream power is above 55 dB, it needs to be Feb 20, 2020 · Low Upstream Power Level. 7 . But all 4 upstream channels I have 34 at the most; consistently. The power level on all downstream appears to be good (1. Downstream Power Level: cable signal sent from the cable provider to cable modem. [deleted] • 10 yr. Jul 18, 2015 · technically low transmit levels (upstream power) can cause connectivity problems too. I was told that my upstream power levels are below what is considered adequate, which the tech stated was abouve 45 dBm. Downstream is way too low and upstream is way too high. 0 dBmV 41. Xfinity says upstream power levels are fine. Downstream Power levels before: 2-4 dBmV Upstream Power levels before: 42-45 dBmV SNR: 37-38 dB Recommended according to DSL Reports for DOCSIS 3. e. 5 db) one that you suggested. 0) 53 dBmV maximum for S-CDMA DOCSIS 2. The 6dB one would take 20dBmV->14dBmV (9dB one would do 20dBmV->11dBmV). Expect to see upstream power levels between 35 dBmV and 48 dBmV, which is 'normal'. Vote. I have been having upstream and downstream issues for a very long time. This increases the CNR, overcoming the noise on the RF plant. 4 MHz reference bandwidth used for ATDMA carriers. 8 dBmV when it should be between 45+ to 52+ dbmv. 6 dB 0 0 4 Locked QAM256 543000000 Hz 8. 3) Replace any required splitters. This IP address 13. I got a new Xfinity approved Netgear 32*8 modem and activated it using xfinity app. We would like to show you a description here but the site won’t allow us. 9 dB 0 0 3 Locked QAM256 537000000 Hz 8. Jan 17, 2021 · Working with a technician at Arris. They should all be in a range of 36 to 40 dB. The downstream power levels for the 8 channels you posted are a bit high, but may not be problematic. I looked in the Arris modem and saw again the upstream power levels are out of range for the modem. This needs to be under 50 to really be stable for 3 upstream channels. Downstream Signal to Noise Ratio (SNR): >35dB. Periods where the dBmV is lower and less clustered is the amp malfunctioning. Your signal levels are perfectly within range (40-50dBmV for upload). 6 dB, 30. This will lower the downstream power levels and keep the upstream power levels the same. It was in the mid 30's when connected through the splitter. From what I've read, this is right on the border of being bad for upstream. Your downstream signal levels are all low, averaging -8. 3 Locked ATDMA 92 5120 Ksym/sec 36500000 Hz 41 dBmV. You don't have fiber service, so you won't get symmetrical speeds. However, the power level on 1 of the upstream is 0. In the mean time, I'm out $230 for a modem that I can't use. Jul 31, 2023 · Thanks EG. Aiming for above 40 is usually a safe bet. OFDM upstream power is 41. Dec 31, 2001 · Upstream Power Level: 40 to 43 is excellent Signal to Noise Ratio is usually seen in the 40s. ago. Removing the filter, kept my upstream in that ~+41 dBmV range, but my download blew up to ~+ 40 dBmV. Can Xfinity increase these levels remotely or does a technician have to come out? Jan 15, 2021 · These are the Comcast system / cable plant spec from the troubleshooting tips sticky topic at the top of this board. -2dBmV. After the upgrade, my signal levels were dramatically improved. All channels that are being received Mar 27, 2023 · The upstream power levels are controlled automatically and continuously by Comcast's equipment and do not need to be above 45 dBmV. All values dBmV. 6 MHz. I am on a 200 Mbps tier, so I am wondering if DOCSIS 3. 5 dbmv dual splitter and it did get my downstream power level down to 9/10 dbmv and boosted upstream to about 39 dbmv but that doesn't seem like it's actually addressing the issue and putting my signals at borderline at best. 6 dBm I swapped from BT about two months ago and have noticed a big difference when playing games on my new Vodafone connection. 77. I have been experiencing intermittent signal loss for the past few days, despite confirming that the modem was otherwise working fine--I could access its status page, run Low upstream power level. Most ISPs run 256-QAM in downstream. A login window displays. The power levels for the downstream channels are in the range of 2. Acceptable levels are usually between 30 dB and 55 dB. He placed an attenuator that lowered the downstream to around +6 and raised the upstream levels to 35. No filters needed as no phones or fax machines in the house. Closed Jun 6, 2023 · Arris G34 modem just doesn't work as it slows down and stops working every other day. To verify the transmit power levels on a CM, use the show cable modem command with the verbose keyword. -. Anything less or more than that and you may have quality issues. 3 dBmV 41. Downstream Power (-15dBmV to +15dBmV) - measure of the signal level received by the cable modem. Additionally, considering the influence of supersaturated TDG generated by the upstream XLD project, the peak Jun 12, 2021 · upstream, downstream issues. No other internal wiring that could be at fault as I'm connected to the test socket. 5-3. I guess you're very close to your street cabinet. MoCA However, the upstream channels that exceed the maximum transmit power level are marked as down and cannot be used for upstream traffic. When this happens, the blinking pattern of the cable modem's lights will look fairly similar to a fresh boot. If you are unable to access your modem’s status page, you can contact Comcast Customer Support and ask the support representative for these values. Something else is going on. 50. Channel type: ATDMA. This just tells me that the modem is not the issue Nov 16, 2023 · Are upstream power levels typically this low on Vodafone Fibre 2? Currently getting -7. 5 . My 5th channel is showing even lower at 31, hence the concern. Apr 7, 2017 · For example, an OFDM Power Profile of 96 MHz, with a power-tilt-linear of 4 dB, and power-adjust-default of 0 dB, has16 bands numbered 0 to 15, band index 0 is +0 dB, band index 15 is +4 dB, and bands 1 to 14 contain the linear power level setting based on the slope of the line between the band 0 and band 15 to the nearest 1/10th dB. Speed test from the router itself only clocks about half the bandwidth I'm paying for. My upstream went from roughly 50/51 down to 41/42. 7-2. 33 dB or higher is recommended. Oct 3, 2013 · We've got a customer with an 887VA who is on VDSL2 and is experiencing very poor upstream sync rates. Feb 10, 2021 · Quick search seems to show it is below maximum allowable levels (I assume the bold one is my signal): 50 dBmV maximum for OFDMA (DOCSIS 3. Modulation is QAM256. 5. 4. 0 Modems: Downstream Power levels before: -10 to +10 dBmV (near 0 preferred with less than ±2 variability between channels) Upstream Power levels before: 40 to 52 dBmV (mid to low 40's preferred) SNR Nov 16, 2023 · Errors and low power levels. I can’t be sure but I was seeing 3-4 “US profile assignment change” messages daily. 3. S Cable Internet providers, including Cox, Spectrum, Xfinity and many others. 5 dB 0 0 2 Locked QAM256 531000000 Hz 9. Your upstream signal levels are ok, which is a little strange. Downstream has 24 channels. Enter your user name and password. I live in a flat so maybe the wiring here isn't the best. 25-0. Also the SNR is below 35 on many channel. It's currently between 33. I have talked to Arris and they say that the upstream power levels need to be between 45 and 54 dbmv. Enter www. 7 dB but the uncorrectable are almost 24% of the corrected packets at one of the downstream channels. If the upstream power is above 55 dB, it needs to be lowered. Normal Upstream Power Level - 35 dBmV to 49 dBmV; Maximum for DOCSIS 3. If your power levels are too high for a given connections maximum it will be changed to another connection type to compensate which can result in speed problems. 8 has been blocked for unusual usage patterns. 2 . My downstream power level went from -6 dBmV to roughly -1dBmv on most channels. 5 to +11. 0 with SNR around 44. Ideally you want upstream around 40db. Comcast Communication services S&P 500 Public company Business Finance Business, Economics, and Finance. 25 dBmV (the lowest) - 45. The upstream power level on my modem is way below spec, and I need someone to change it. This allows us to derive a power level from any size bandwidth of OFDMA carrier—it is slick! Using basic math, we can convert the OFDMA power level to the same 6. 8 dBmV 41. It appears the upstream signal needs adjusting. Upstream Signal to Noise Ratio (uSNR): >31dB. Removing splitters is what lowers upstream, not adding them. If you add more cable (or a splitter) the modem has to 'try harder' (use more power) to get a good upstream connection. May 6, 2020 · Still waiting for things to be fixed here. Any way to adjust Cable Modem Downstream Power Levels? 6 years ago Hqpham. Downstream Power refers to the line signal sent from the cable provider to cable modem. My modem is a fairly new Cisco DPC3008. The power levels for the upstream channels are in the range of 47. Downstream power levels generally range between: +9. Most modems are rated from -15dB to +15dB, however it's best to have it between +8dB and -8dB. Pushing the downstream 2. Interestingly my OFDM upstream power was only 35 before the attenuator. Downstream SNR (Signal to Noise Ratio): cable signal being sent in relation to the noise on the line. net. Downstream sync rate is good. Mar 11, 2022 · The upstream power levels are controlled automatically and continuously by Comcast's equipment and do not need to be above 45 dBmV. DS power levels +0. Sep 16, 2023 · Upstream Power: The lower the number the better (within reason). The higher values are when the power is properly boosted. But occasionally, it just decides to drop to 0. There is an ideal point where modems would work best, that level is +45dBm. Feb 27, 2023 · The upstream power levels are controlled automatically and continuously by Comcast's equipment and do not need to be above 45 dBmV. Also on the upstream bonded channels, the power levels are below spec, topping out at 32 dBmV. 8, and 35. When I talked to the Arris support about the SB6190, he said i would get better speed if the power levels were in the recommended range and Xfinity could adjust it, but Xfinity is Mar 31, 2022 · Router reports low downstream power. Mar 8, 2021 · The upstream power levels are OK -- Comcast's equipment controls them and automatically adjusts them as needed so that the signal they receive is at the proper level. Upstream Receive Power. 2-3 dB of difference in downstream signals is to be expected in a 24 channel plant. -12dB to +12dB or better recommended*. There is no problem here. The three signal levels that need to be within the acceptable level are Downstream Power, SNR (Signal to Noise Ratio), and Upstream Power. There are no DOCSIS 3. A low/high transmit signal can be caused by a bad MODEM, internal coax, splitter (s), tap, amp, all The three signal levels that need to be within the acceptable level are Downstream Power Level, SNR (Signal to Noise Ratio), and Upstream Power Level. Downstream power levels should be between -10 dBmV and 10 dBmV. Upstream Power Level: +25dBmV to +54dBmV. Currently, early in 2015, modems do not yet support these highest levels, it is common to find support up to 54 dBmV. 5 mb upload. I've noticed that It is why I always recommend to get a docsis 3. Downstream Bonded Channels Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables 5 Locked QAM256 549000000 Hz 8. Mar 15, 2020 · The optimal power generation schemes for expanding the fish shelter area of the low TDG level were explored based on the experimental results of the avoidance ability of fish to supersaturated TDG. Majority of modems are Cisco DPC3825 and CMTS is a BSR 64k. Upstream QAM was only 23-25 dBmV when connected directly to the input line. Oct 27, 2020 · The internet will sometimes drop multiple times per day every few hours or we go 2 whole days without any issues, then right back to dropping. The modem starts low and then uses higher and higher power until it makes a good connection to the headend. I would say that those are on the edge of too low. Upstream power levels low 32-33. Which. That's because, as long as upstream power is not maxed out, what's important is not the level at the modem, it's the level (and quality) of the modem's signal as received at Comcast, which they attempt to keep as It connected to -7db when I first started messing with it this morning, and my downstream levels were high at ~+18 dBmV, and my upstream was still a tad low at ~+41 dBmV. SNR & Power Level on set top boxes. 0 - 52 dBmV . Downstream Power Level: cable signal sent from the cable provider to Wi-Fi cable modem. 34. SNR is the clarity or "cleanness" of the signal at the modem. You'll have some downstream channels and also some upstream channels. What should I do? While that link recommends 35+ Upstream power level, in the the link it says "256 QAM: 30 dB minimum. There's some interleaving on the download side for some reason, but no delay has yet been added. It’s best for cable internet speed plans up to 1. Additionally, I am only receiving 3 Upstream channels from Comcast. The wiring to the master socket is likely to have been installed by the developers before being handed over to BT, and is probably of low Dec 1, 2023 · In the process of structural transformation of the power system, the development of low-carbon technologies in upstream sectors would have multiplier effects on reducing the emissions of the entire power supply chain. So something does seem wrong there. These conclusions yield the following policy implications for the formation of low-carbon power supply chains. What the title says basically. Everything else Arris recommends seems to match Motorola/Zoom and your values. 3 I am running a direct line to the modem with no splitters however as an idea to test out I did try a -3. Too low and if there is any noise/interference (caused by loose connections, faulty equipment, open connections, bad coax, etc)it Also, upstream power levels are pretty low. He stated that a higher level technician needs to come out and I have an Arris S33 modem and I have been having it time-out and disconnect every night. Nov 24, 2020 · Downstream Power Level Cable Modems-10dBmV +10dBmV: Gateways and EMTAs-7dBmV +7dBmV: Downstream Signal to Noise Ratio: 35dB-Upstream Power Level +35dBmV +50dBmV: Upstream Signal to Noise Ratio: 31dB-Upstream Receive Power-2dBmV +2dBmV Upstream noise will and can cause slow speed and disconnects, you’ll need a line tech out there if that’s the issue, also if he sweeps the return your transmit will probably fall into alignment where it’s supposed to be (unless it’s a crappy design then your transmit isn’t going to change). 2 Locked ATDMA 91 5120 Ksym/sec 30100000 Hz 41. That is correct. 2 Gbps. Yes, the level from the modem is controlled by the far-end equipment. And of course, my speed is well under the 200 plan I have. ja xy yg td hk it oq dj sn ba
Low upstream power level. One major cable company spec is 31 min 53 max.