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Yoorie

join:2011-11-22
Toronto, ON

2 edits

[Cable] modem stats with attenuator?

Hi all,

Switched from Rogers to Start the other day, and when hooking up the new modem, I realized that the Rogers tech had installed a cable attachment labelled "6-FAM-6" when I got my Rogers service set up. I'm guessing is a 6 db signal attenuator? From what I can tell, these are typically installed if there's a signal amp in the building, to bring the signal strength down to something that's manageable by the modem (I imagine it would also attentuate the modem's upload signal, then.. which could be bad? I digress.)

Anyway, here's the modem stats for the DCM476:

Cable Signal Details
Forward Path:
Channel Frequency       Power           SNR     BER     Modulation
1       663.0 MHz       0.5 dBmV        39.0 dB 0.000 % 256 QAM
2       615.0 MHz       -0.7 dBmV       37.5 dB 0.000 % 256 QAM
3       621.0 MHz       0.0 dBmV        39.0 dB 0.000 % 256 QAM
4       633.0 MHz       0.4 dBmV        39.0 dB 0.000 % 256 QAM
5       639.0 MHz       0.5 dBmV        39.0 dB 0.000 % 256 QAM
6       645.0 MHz       0.5 dBmV        39.0 dB 0.000 % 256 QAM
7       651.0 MHz       0.3 dBmV        39.0 dB 0.000 % 256 QAM
8       657.0 MHz       0.4 dBmV        39.0 dB 0.000 % 256 QAM
Return Path:
Channel ID Frequency    Power           Modulation
1          38.6 MHz     43.5 dBmV       64 QAM
2          30.6 MHz     43.5 dBmV       64 QAM
3          23.7 MHz     43.5 dBmV       64 QAM
0          0.0 MHz      0.0 dBmV        QPSK
 

Basically, I'm wondering if they're any good, and if the attenuator should be there as it is now.

Thanks!

nbinont

join:2011-03-13
kudos:2
Stats are fine.