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5-System Validation
The table below shows that the network convergence on communication loss and recovery
has no effect on the ART.
Response time
STB 2
Minimum (ms)
119
Average (ms)
158
Maximum (ms)
198
Table 10. External ART for a device failure recovery
Graphs of the test results can be found in Section 6, Performance Results – Effects of
Network Re-convergence on ART
5.4. Infrastructure redundancy
The overall system integrity can be affected by many events such as; cable breaks between
devices or an inoperable device. A cable break test was conducted to simulate an event that
would result in a network reconvergence. Similar to the power cycle test, the worst-case
scenario was chosen as the spot to break the cable link.
Simulated Cable Break Test
The External ART was measured during the test to validate the network’s integrity. The ART
remained typical with no significant variance.
Minimum ART
Average ART
Maximum ART
122 (ms)
159 (ms)
202 (ms)
Table 11. External ART for all islands after cable break
Graphs of the test results can be found in Section6, Performance Results – Effects of Network
Re-convergence on ART
This document is for internal use only.
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