EGThe wings of love Premium Member join:2006-11-18 Union, NJ |
to TechnoScott
Re: [Signals] Signal checksaid by TechnoScott:An upstream transmit of 35 is not low - don't know who's been telling you guys that. 30 is low, 25 is REALLY low but 35 is just fine. Are you sure about that for D3 systems ? It could be low in some systems / environments / cases |
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Yes, in fact the maximum transmit requirements drop for D3 bonded when they bond over 3 channels. |
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EGThe wings of love Premium Member join:2006-11-18 Union, NJ |
EG
Premium Member
2012-Jun-22 12:34 pm
said by TechnoScott:Yes, in fact the maximum transmit requirements drop for D3 bonded when they bond over 3 channels. That's because of "total power" but then why is it that many systems like to and do have DOCSIS 3 run higher like above 40 dB but below 50 dB than did DOCSIS 2 ? |
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The upstream power level does seem to fluctuate a few dBs throughout the course of the day. Latest reading:
Downstream Value Frequency 705000000 Hz Signal to Noise Ratio 36 dB QAM QAM256 Network Access Control Object ON Power Level -4 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 1 Frequency 30100000 Hz Ranging Service ID 649 Symbol Rate 5.120 Msym/s Power Level 33 dBmV
The signal fluctuation coincided with these log entries which refer to channel changes. Is this a sign of ongoing issues?
2012-06-22 16:56:43 7-Information Channel Change Complete - Enabling Bridge 2012-06-22 16:56:43 7-Information C203.0 DCC arrive new 2012-06-22 16:56:38 7-Information Starting Ranging On Channel 1 2012-06-22 16:56:38 7-Information Dynamic Channel Change of Downstream Requested - Disabling Bridge 2012-06-22 16:56:38 7-Information Dynamic Channel Change of Downstream Requested - Setting tuner to 705.0MHz 2012-06-22 16:56:38 7-Information C202.0 DCC depart old 2012-06-22 14:16:39 7-Information Channel Change Complete - Enabling Bridge 2012-06-22 14:16:39 7-Information C203.0 DCC arrive new 2012-06-22 14:16:34 7-Information Starting Ranging On Channel 1 2012-06-22 14:16:34 7-Information Dynamic Channel Change of Downstream Requested - Disabling Bridge 2012-06-22 14:16:34 7-Information Dynamic Channel Change of Downstream Requested - Setting tuner to 711.0MHz 2012-06-22 14:16:34 7-Information C202.0 DCC depart old 2012-06-20 07:46:57 7-Information SNMP: Working in SNMP V1/2c Only NmAccess mode 2012-06-20 07:46:55 7-Information INITIALIZATION COMPLETE - MODEM IS OPERATIONAL 2012-06-20 07:46:55 7-Information B401.0 Authorized 2012-06-20 07:46:55 7-Information SEC: Co-Signer CVC from configuration file was verified 2012-06-20 07:46:54 7-Information REGISTRATION COMPLETE - Waiting for Operational status 2012-06-20 07:46:54 7-Information REG: Capability type isn't supported by CMTS 2012-06-20 07:46:54 7-Information Registration file - downloaded 2012-06-20 07:46:52 7-Information Trying to download Configuration file ... |
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to EG
Because some systems are lazy and think padding return amplifiers will get them better carrier to noise figures because the modems are transmitting higher? |
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My logs are capturing a lot of entries pertaining to dynamic downstream changes. Is this normal behavior? I don't recall the frequency changing as often as it is right now, or at all.
2012-06-24 14:39:48 7-Information Channel Change Complete - Enabling Bridge 2012-06-24 14:39:48 7-Information C203.0 DCC arrive new 2012-06-24 14:39:43 7-Information Starting Ranging On Channel 1 2012-06-24 14:39:43 7-Information Dynamic Channel Change of Downstream Requested - Disabling Bridge 2012-06-24 14:39:43 7-Information Dynamic Channel Change of Downstream Requested - Setting tuner to 705.0MHz 2012-06-24 14:39:43 7-Information C202.0 DCC depart old 2012-06-23 17:38:25 7-Information Channel Change Complete - Enabling Bridge 2012-06-23 17:38:25 7-Information C203.0 DCC arrive new 2012-06-23 17:38:20 7-Information Starting Ranging On Channel 1 2012-06-23 17:38:20 7-Information Dynamic Channel Change of Downstream Requested - Disabling Bridge 2012-06-23 17:38:20 7-Information Dynamic Channel Change of Downstream Requested - Setting tuner to 711.0MHz 2012-06-23 17:38:20 7-Information C202.0 DCC depart old 2012-06-23 15:30:38 7-Information SNMP: Working in SNMP V1/2c Only NmAccess mode 2012-06-23 15:30:36 7-Information INITIALIZATION COMPLETE - MODEM IS OPERATIONAL 2012-06-23 15:30:36 7-Information B401.0 Authorized 2012-06-23 15:30:36 7-Information SEC: Co-Signer CVC from configuration file was verified 2012-06-23 15:30:35 7-Information REGISTRATION COMPLETE - Waiting for Operational status 2012-06-23 15:30:35 7-Information REG: Capability type isn't supported by CMTS 2012-06-23 15:30:35 7-Information Registration file - downloaded 2012-06-23 15:30:33 7-Information Trying to download Configuration file ... Event Log has reached maximum size. Older log entries are lost. |
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EGThe wings of love Premium Member join:2006-11-18 Union, NJ |
EG
Premium Member
2012-Jun-24 5:18 pm
That small sampling of log entries shows only one or two of these events per day. By no means is that a lot. Intermittent / occasional noise on the lines can cause these. |
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