BSR 2000 Configuration and Management Guide
Release 1.0
6-46
MGBI
526360-001-00 Rev. B
■
Enforcing the Downstream Rate Limit
■
■
Entering a Description of the Downstream Port
Configuring the Downstream Frequency and Modulation Rate
Follow the steps in this section to configure the downstream center frequency and
modulation rate:
1.
Use the
cable downstream
frequency
command in Interface Configuration
mode to enter the fixed center frequency for the downstream channel:
MOT(config-if)#
cable downstream 0 frequency
{<
91000000 -
857000000>
}
where:
91000000 - 857000000
is the downstream frequency in Hertz.
2.
Use the
cable downstream modulation
command in Interface Configuration
mode to set the downstream digital to analog signal modulation rate:
MOT
(config-if)#
cable downstream 0 modulation
[
64
|
256
]
where:
64
is 6 bits per downstream symbol Quadrature Amplitude Modulation
(QAM).
256
is 8 bits per downstream symbol Quadrature Amplitude Modulation
(QAM).
Use the
no cable downstream modulation
command in Interface Configuration
mode to restore the default:
MOT
(config-if)#
no cable downstream 0 modulation
[
64
|
256
]
Note:
The digital carrier frequency cannot be the same as the video carrier
frequency.
Summary of Contents for BSR 2000
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