Cisco Headend System Release 2.5 ユーザーガイド
78-738186-01 Rev B
DHCT Status Reporting Utility
1-47
DHCT Delay Value Saturation Report,
Continued
Delay Value Analysis
The second part of the DHCT Delay Value Saturation Report provides a detailed
The second part of the DHCT Delay Value Saturation Report provides a detailed
breakdown of the graphical data displayed in Graphical Distribution of DHCT
Delay Values, earlier in this section. This part of the report contains the following
data:
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•
A listing of the QPSK modulator and associated demodulators
Note: In the following example, Modulator QPSKMOD1 is configured with eight
Note: In the following example, Modulator QPSKMOD1 is configured with eight
demodulators.
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The average and the median delay values for the modulator and each
demodulator
•
A detailed listing showing the number of DHCTs with each delay value
DHCT Delay Value Breakdown
QPSK Mod Name ID Avg. Med 90ms 134ms 300ms 745ms 761ms 800ms
----------------- --- ------ --- <-------+--------+--------+--------+--------+--------+--------->
QPSKMOD1 3 618.38 671 0 | 0 | 24 | 7150 | 0 | 0 | 0
DMod: 1 686.80 686 0 | 0 | 0 | 1086 | 0 | 0 | 0
DMod: 2 694.62 705 0 | 0 | 0 | 813 | 0 | 0 | 0
DMod: 3 695.50 708 0 | 0 | 0 | 792 | 0 | 0 | 0
DMod: 4 691.04 709 0 | 0 | 0 | 783 | 0 | 0 | 0
DMod: 5 681.21 669 0 | 0 | 0 | 1079 | 0 | 0 | 0
DMod: 6 664.94 660 0 | 0 | 0 | 1067 | 0 | 0 | 0
DMod: 7 367.46 369 0 | 0 | 24 | 753 | 0 | 0 | 0
DMod: 8 390.88 381 0 | 0 | 0 | 777 | 0 | 0 | 0
<-------+--------+--------+--------+--------+--------+--------->
----------------- --- ------ --- <-------+--------+--------+--------+--------+--------+--------->
QPSKMOD1 3 618.38 671 0 | 0 | 24 | 7150 | 0 | 0 | 0
DMod: 1 686.80 686 0 | 0 | 0 | 1086 | 0 | 0 | 0
DMod: 2 694.62 705 0 | 0 | 0 | 813 | 0 | 0 | 0
DMod: 3 695.50 708 0 | 0 | 0 | 792 | 0 | 0 | 0
DMod: 4 691.04 709 0 | 0 | 0 | 783 | 0 | 0 | 0
DMod: 5 681.21 669 0 | 0 | 0 | 1079 | 0 | 0 | 0
DMod: 6 664.94 660 0 | 0 | 0 | 1067 | 0 | 0 | 0
DMod: 7 367.46 369 0 | 0 | 24 | 753 | 0 | 0 | 0
DMod: 8 390.88 381 0 | 0 | 0 | 777 | 0 | 0 | 0
<-------+--------+--------+--------+--------+--------+--------->
The data confirms the existence of two distinct clusters of DHCTs, with each cluster
located a distinct radius away from the modulator.
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7,150 DHCTs have a delay value of approximately 745 ms
Note: These DHCTs correspond to the cluster situated over the Close to Headend
Note: These DHCTs correspond to the cluster situated over the Close to Headend
label along the x-axis of the graph shown under the Graphical Distribution of
DHCT Delay Values heading, earlier in this section.
•
24 DHCTs have a delay value of approximately 300 ms
Note: These DHCTs correspond to the cluster located over the Far from Headend
Note: These DHCTs correspond to the cluster located over the Far from Headend
but Within Range label along the x-axis of the graph shown under the Graphical
Distribution of DHCT Delay Values heading, earlier in this section.