itnetworks.softing.com/XG
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T O O L S
Individual BERT test
The BERT test carried out during the qualification test can also be started separately here.
Figure 37 – Individual BERT test
Set the desired speed and the duration of the test. On the right side, you will see an
overview of the sent packages during the test. After the set time has expired, the
NetXpert XG will show you if the test ran without errors.
The pre-set test times depend on the selected Ethernet speed and are based on
statistical security (see table, 63% CL).
Transmission format Standards reference
Required Bit Error Rate in
standards reference
Test time for 10%
confidence level
Test time for 63%
confidence level
Test time for 95%
confidence level
Confidence level with
10 second test time
1G
IEEE Std 802.3ab
10
-10
1 second
10 seconds
30 seconds
63,0%
2.5G
IEEE Std 802.3bz
10
-12
42 seconds
6 minutes 38 seconds
19 minutes 58 seconds
2,5%
5G
IEEE Std 802.3bz
10
-12
21 seconds
3 minutes 19 seconds
9 minutes 59 seconds
4,9%
10G
IEEE Std 802.3an
10
-12
11 seconds
1 minute 39 seconds
5 minutes 0 seconds
9,5%
The test times can also be set arbitrarily between 0 (duration test) to 300 seconds.
The evaluation takes place via the comparison of the transmitted and received data
packets.
The result of the BERT test can be documented in PDF format.