Cisco Headend System Release 2.7 User Guide
The Reporting Option
4031374 Rev B
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QPSK Range Extension Feature
The Model D9482 QPSK Modulator is designed to be capable of successfully
connecting to and operating DHCTs within a distance of approximately 128 km
round trip (64 km each way when forward and reverse paths are equal). This
distance limitation is mainly due to the width of the ranging slots defined in the
Digital Audio-Visual Council (DAVIC) standard for operation over the hybrid fiber
coax (HFC) plant.
connecting to and operating DHCTs within a distance of approximately 128 km
round trip (64 km each way when forward and reverse paths are equal). This
distance limitation is mainly due to the width of the ranging slots defined in the
Digital Audio-Visual Council (DAVIC) standard for operation over the hybrid fiber
coax (HFC) plant.
Some cable service providers prefer to physically locate the QPSK hardware in the
headend and extend coverage to DHCTs that are farther from the QPSK modulator
than the currently allowable maximum distance. This optional feature, known as the
QPSK Range Extension Feature for the Model D9482 QPSK Modulator, allows
Explorer DHCTs to sign on to the system and operate properly at extended distances
from the QPSK modulator.
headend and extend coverage to DHCTs that are farther from the QPSK modulator
than the currently allowable maximum distance. This optional feature, known as the
QPSK Range Extension Feature for the Model D9482 QPSK Modulator, allows
Explorer DHCTs to sign on to the system and operate properly at extended distances
from the QPSK modulator.
DHCT OS and ResApp Evaluation by Set Top Type and Rev Report
A typical DBDS supports DHCTs of many types and revisions. The DHCT Status
utility includes an option that generates a report that lists the following data:
utility includes an option that generates a report that lists the following data:
The number and percentage of each DHCT type and revision supported by the
system
system
The version of operating system and resident application software running on
each DHCT type and revision
each DHCT type and revision
Generating the DHCT OS and ResApp Evaluation by Set Top Type and Rev report
Follow these instructions to generate the DHCT OS and ResApp Evaluation by Set
Top Type and Rev Report.
1 Maximize the xterm window.
Top Type and Rev Report.
1 Maximize the xterm window.
Note: The data in the DHCT OS and ResApp Evaluation by Set Top Type and
Rev Report is designed to display best if the window is maximized.
Rev Report is designed to display best if the window is maximized.