Juniper Networks G10 CMTS manual Existing Docsis Service Characterization, Parameter Value

Characterization of Installation Site

Table 28: Existing DOCSIS Service Characterization

Parameter	Value
1st DOCSIS Service
Upstream RF bandwidth allocated	____ MHz (max) ____ MHz (min)
Upstream modulation type	____ QPSK ____ 16QAM
Upstream input level expected at CMTS	____ dBmV
FEC enabled?	____ yes ____ no
If yes, FEC level parameters (T and K)	____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)
2nd DOCSIS Service
Upstream RF bandwidth allocated	____ MHz (max) ____ MHz (min)
Upstream modulation type	____ QPSK ____ 16QAM
Upstream input level expected at CMTS	____ dBmV
FEC enabled?	____ yes ____ no
If yes, FEC level parameters (T and K)	____ 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 (DOCSIS carrier)
	____ dB (Analog video carrier)
Downstream interleave depth setting	___ (# of taps) ____(increments)

Table 29 on page 78 and Table 30 on page 80 are provided to collect upstream and downstream characterization information for a DOCSIS Module. If the CMTS configuration includes more than one DOCSIS Module, additional tables are provided in “Additional Characterization Tables” on page 85.

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Prepare the Site 77