Upstream
Results
Attainable Bit Rate (bps) |
Maximum Attainable Data Rate in bits per second. The maximum net data rate currently attainable by ATU-R transmitter and ATU-C receiver (upstream direction). |
Actual Transmit Power (dBm) |
Actual Aggregate Transmit Power from the ATU-C at the instant of measurement. Range -31 to 31 dBm |
Loop Attenuation (dB) |
The measured difference in the total power transmitted by the ATU-R and the total power received by the ATU-C over all sub-carriers during diagnostics mode. Range 0 to 127 dB |
Signal Attenuation (dB) |
The measured difference in the total power transmitted by the ATU-R and the total power received by the ATU-C over all sub carriers during SHOWTIME after the diagnostics mode. Range 0 to 127 dB |
SNR Margin (dB) |
The maximum increase in dB of the noise power received at the ATU-C, such that bit error rate (BER) requirements are met for all bearer channels received at the ATU. Range -64 to 63 dB |
Downstream
Results
Attainable Bit Rate (bps) |
Maximum Attainable Data Rate in bits per second. The maximum net data rate currently attainable by ATU-C transmitter and ATU-R receiver (downstream direction). |
Actual Transmit Power (dBm) |
Actual Aggregate Transmit Power from the ATU-R at the instant of measurement. Range -31 to 31 dBm |
Loop Attenuation (dB) |
The measured difference in the total power transmitted by the ATU-C and the total power received by the ATU-R over all sub-carriers during diagnostics mode. Range 0 to 127 dB |
Signal Attenuation (dB) |
The measured difference in the total power transmitted by the ATU-C and the total power received by the ATU-R over all sub-carriers during SHOWTIME after the diagnostics mode. Range 0 to 127 dB |
SNR Margin (dB) |
The maximum increase in dB of the noise power received at the ATU-R, such that bit error rate (BER) requirements are met for all bearer channels received at the ATU. Range -64 to 63 dB |
January 22, 2011