Руководство Пользователя для Cisco DNCS System Release 2.8.1 3.8.1 4.3.1
detects a loss of signal on the active GbE
input port.
input port.
Switch Mode
Determines how the GQAM switches from the primary (active) GbE port to the
secondary (inactive) GbE port. Select one of the following options:
secondary (inactive) GbE port. Select one of the following options:
Auto - The GQAM modulator switches from the active GbE input
port to the inactive GbE input port whenever the modulator detects a
loss of signal on the active port that meets or exceeds the setting for
the Los timer.
loss of signal on the active port that meets or exceeds the setting for
the Los timer.
Manual - Forces the GQAM modulator to use a specific GbE port.
Typically, this setting is used for maintenance or troubleshooting.
Available only when you use a dual-GbE port GQAM (GQAM software
version 4.0 or higher required).
version 4.0 or higher required).
Note: You can verify which GbE input port is active by clicking Status.
When you click Status, the DNCS displays the GbE input port that is
active along with the current date and time. Port 5 indicates the
primary GbE port is active. Port 6 indicates the secondary (backup)
GbE port is active.
When you click Status, the DNCS displays the GbE input port that is
active along with the current date and time. Port 5 indicates the
primary GbE port is active. Port 6 indicates the secondary (backup)
GbE port is active.
Initial Port
Determines which port (First or Second) the GQAM uses during boot up. Select
the port that the modulator uses during boot up.
the port that the modulator uses during boot up.
Available only when you use a dual-GbE port GQAM (GQAM software version
4.0 or higher required).
4.0 or higher required).
Note: You can verify which GbE input port is active by clicking Status. When
you click Status, the DNCS displays the GbE input port that is active along with
the current date and time. Port 5 indicates the primary GbE port is active. Port
6 indicates the secondary (backup) GbE port is active.
you click Status, the DNCS displays the GbE input port that is active along with
the current date and time. Port 5 indicates the primary GbE port is active. Port
6 indicates the secondary (backup) GbE port is active.
Input Port
The type of interface that will receive data from the QAM.
If the QAM modulator will process VOD data, the modulator must have an ASI
input interface.
input interface.
INPUT Transport
Stream ID
Stream ID
The system sets this value automatically when the corresponding transport
stream ID is set up and the connection is established on the Connectivity tab.
stream ID is set up and the connection is established on the Connectivity tab.
RF OUT
Modulation - The type of
modulation this QAM modulator
uses
modulation this QAM modulator
uses
Select the type of modulation this QAM
modulator uses.
modulator uses.
Example: If this modulator uses 256 QAM,
select 256 QAM.
select 256 QAM.
Note: The type of modulation affects the
total bandwidth available for setting up
sessions on the modulator:
total bandwidth available for setting up
sessions on the modulator:
Modulators using 64-QAM support a
total bandwidth of 26.971 Mbps.
Modulators using 256-QAM support
a total bandwidth of 38.811 Mbps.
Transport Stream ID -
Identifies the transport stream
Identifies the transport stream
Type a unique number to identify the
transport stream going from this QAM
modulator to the DHCTs on your system.
transport stream going from this QAM
modulator to the DHCTs on your system.
You can use up to 5 numeric characters.
Channel Center Frequency
(MHz) - The channel frequency
that you will use to send system
information to DHCTs
(MHz) - The channel frequency
that you will use to send system
information to DHCTs
Type the channel frequency that you will use
to send system information to DHCTs on this
headend.
to send system information to DHCTs on this
headend.
We recommend that you enter a value in 6
MHz increments from 91 to 867. Click to see
MHz increments from 91 to 867. Click to see
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