Juniper G10 CMTS, Руководство по установке

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Additional Characterization Tables
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Juniper Networks G10 CMTS Pre-Installation Guide 16
Additional Characterization Tables
If the installation site supports more than two DOCSIS services, the characterization of the
additional services is to be captured in Table 10. In addition, if the desired CMTS
configuration includes more than one DOCSIS Module, the additional tables, beginning on
page 17, can be used as needed.
Table 10: Existing DOCSIS Service Characterization
Parameter Value
____ DOCSIS Service
Upstream RF bandwidth allocated ____ MHz (max) ____ MHz (min)
Upstream modulation type ____ QPSK ____ 16QAM
Upstream input level expected at CMTS ____ dBmV
FEC enabled?
If yes, FEC level parameters (T and K) ____ yes ____ no
____T ____ K
Upstream measured C/N ____ dB
Downstream RF bandwidth allocated ____ MHz (max) ____ MHz (min)
Downstream modulation type ____ 64QAM ____256QAM
Downstream output signal level (relative to analog video) ____ dB
Downstream measured C/N ____ dB (DOSCIS carrier)
____ dB (Analog video carrier)
Downstream interleave depth setting ___ (# of taps) ____(increments)
____ DOCSIS Service
Upstream RF bandwidth allocated ____ MHz (max) ____ MHz (min)
Upstream modulation type ____ QPSK ____ 16QAM
Upstream input level expected at CMTS ____ dBmV
FEC enabled?
If yes, FEC level parameters (T and K) ____ yes ____ no
____ T ____ K
Upstream measured C/N ____ dB
Downstream RF bandwidth allocated ____ MHz (max) ____ MHz (min)
Downstream modulation type ____ 64QAM ____256QAM
Downstream output signal level (relative to analog video) ____ dB
Downstream measured C/N ____ dB (DOSCIS carrier)
____ dB (Analog video carrier)
Downstream interleave depth setting ___ (# of taps) ____(increments)