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BERT test (Copper)
The BERT test menu allows the user to run a Bit Error Rate Test at a specified speed and duration.
Figure 53 - Individual BERT test
Set the desired speed and the duration of the test. Select the test icon to begin the
test. When the test is finished, the NetXpert XG2 will display a Green pass icon and
the packet count. If errors were detected, the NetXpert will fail the test and display
the quantity of dropped packets
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 8O2.3ab
10
-10
1 second
1O seconds
3O seconds
63,O%
2.5G
IEEE Std 8O2.3bz
10
-12
42 seconds
6 minutes 38 seconds
19 minutes 58 seconds
2,5%
5G
IEEE Std 8O2.3bz
10
-12
21 seconds
3 minutes 19 seconds
9 minutes 59 seconds
4,9%
1OG
IEEE Std 8O2.3an
10
-12
11 seconds
1 minute 39 seconds
5 minutes O seconds
9,5%
The test duration can be set between O and 3OO seconds. The test takes place in
reference to the comparison of the transmitted and received data packets.
The result of the BERT test can be documented in PDF format.