Level – EXFO ETS-1000G User Manual
Page 89
BERT
10 Gigabit Ethernet Analyzer
79
Note: LSS is a state when there is no synchronization with the data being
received and it is impossible to evaluate the BER parameter. The possible
causes of the loss of synchronization are:
Inconsistency of test sequences (for example, PRBS 2e15 is set at the
receiving end, but PRBS 2e23 is being transmitted through the
channel).
The BER value of the channel being used for transmitting the sequence
is too high (the threshold value is 0.01).
You can manually inject single-bit errors into the outgoing test pattern
simply by clicking the
button.
Press
(Save/Load) to enter the menu which allows displaying
information about saved measurements (
), saving test results and
parameters (
), loading (
) and deleting (
) saved measurement
results and parameters.
Level
Selecting an OSI layer on which the test is to be conducted:
1 - the physical layer
2 - the data link layer (MAC)
3 - the network layer (IP)
4 - the transport layer (TCP/UDP)