Refer to Key performance indicators for definitions of the following parameters:
Downstream Power:
- Rx Power (dBmV)
Downstream Noise:
- MER (dB)
- SNR (dB)
- SNR Deviation (σ)NOTE: SNR Deviation is a licensed feature that must be turned on separately.
Downstream Spectral Response:
- Spectral Response (dB)
Downstream FEC:
Downstream FEC is the downstream error
rate before and after Forward Error Correction (FEC).
- CCER+CER (%)
- CER (%)
Downstream Partial Service:
- Partial Service
Upstream Power:
- Tx Power (dBmV)
- Rx Power (dBmV)
- Attenuation
Upstream Noise:
- SNR (dB)
- SNR Deviation (σ)NOTE: SNR Deviation is a licensed feature that must be turned on separately.
Upstream Spectral Response:
The values are computed based on the
upstream equalization coefficients reported by the cable modem.
- Composite EQ (dB)
- Group Response (dB)
- Echo Response (dB)
Upstream FEC:
Upstream FEC is the downstream error
rate before and after Forward Error Correction (FEC).
- CCER+CER (%)
- CER (%)
Upstream Partial Service:
- Partial Service
- T3 Errors
- T4 Errors