metrotek ETS-1000, Руководство по эксплуатации

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66 Analysis. Typical tasks and solutions
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At the Transport layer , test data is encapsulated into an UDP header,
then — into IP header and an Ethernet frame thus allowing to transmit
test pattern using transport protocols. Possible connection schemes are
shown on fig. 5.80, 5.81, and 5.82.
Figure 5.70. Transport layer frame
Figure 5.71. BERT screen
• ET — time elapsed since the test started.
• RT — time remained till test finish.
• BITs — number of received bits.
• EBITs — number of bits with errors.
• BER — ratio of the EBITs value to the BITs value.
• LSS — duration of the synchronization loss.
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%LSS — ratio of LSS duration to the elapsed time (ET), percentage.
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LOS — duration of signal loss.
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%LOS — ratio of LOS duration to the elapsed time (ET), percentage.
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Setup — switch to the BERT Setup menu.
To switch to the Results menu press button ( Results ). For more
details see section 5.19.
ETS-1000. Operations manual