Appendix B ’SNMP Management’ — Getting Input Snapshot and Statistics
Amethyst III DTV Smart Switch 239
User Manual
Input Statistics: Bitrate Measurement
Bit rates are computed as follows:
The
snapshot bit rate
is the bit rate computed with a period of 500
ms.
The
average bit rate
is the average of 10 snapshot bit rates. It is
computed every 5 seconds.
The
minimum bit rate
is the smallest bit rate of 10 snapshot bit rates.
It is computed every 5 seconds.
The
maximum bit rate
is the largest bit rate of 10 snapshot bit rates.
It is computed every 5 seconds.
In the following example, there are 3 average bit rates, 3 minimum bit
rates and
3 maximum bit rates according to 30 snapshot bit rates.
Figure B-11. Input statistics: bit rate measurement
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