Cisco Headend System Release 2.5 Mode D'Emploi
78-738186-01 Rev B
DHCT Status Reporting Utility
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Description of Reports
DHCT Status Reporting Utility Reports
The DHCT Status Reporting Utility includes the following reports that system
operators can generate to summarize various DHCT polling data:
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Non-responder reports—DHCTs with an IP address that fail to respond to poll
requests from the DNCS are commonly known as non-responders. The utility
generates two types of DHCT non-responder reports:
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DHCT non-responders identified by QPSK modulator and demodulator
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DHCT non-responders identified by DHCT type and revision
By analyzing the report, system operators can spot trends that may indicate that a
disproportionate share of non-responding DHCTs are associated with a specific
QPSK, or are DHCTs of a specific type or revision.
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Transmit level report—When a DHCT signs on to the network, the QPSK
modulator informs the DHCT of the signal needed to maintain a communication
link between the DHCT and the modulator. The DHCT Transmit Level Saturation
Report summarizes the transmit levels of DHCTs associated with each QPSK
modulator and demodulator in the system. By analyzing the transmit levels,
system operators can quickly spot when network conditions are preventing
effective communication between the headend and the DHCTs.
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Delay value report—When a DHCT signs on to the network, the QPSK modulator
performs a test that evaluates the distance from the DHCT to the modulator. Based
upon this distance, the modulator assigns a “delay value,” which indicates how
often a DHCT will check in with the QPSK modulator. The closer the DHCT is to
the modulator, the greater the delay value; the farther the DHCT is from the
modulator, the shorter the delay value.
The DHCT Delay Value Saturation Report summarizes the delay values of DHCTs
The DHCT Delay Value Saturation Report summarizes the delay values of DHCTs
associated with each QPSK modulator and demodulator in the system. By
analyzing the delay values, system operators can spot conditions under which it
may be advantageous to configure a QPSK modulator for the QPSK Range
Extension Feature.
Note: The QPSK Range Extension Feature allows DHCTs to sign on to the system
Note: The QPSK Range Extension Feature allows DHCTs to sign on to the system
and operate properly at extended distances from the QPSK modulator.
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Operating system and resident application report—The DHCT Status Reporting
Utility generates a report that lists the version of operating system (OS) and
resident application code running on each DHCT type and revision supported by
the system.