EXFO FTB-8510B Guia Del Usuario página 1130

Next-Generation Tabs
LCAS - Source
RS-Ack Timeout
Note: Not available when Non-LCAS from the Remote DUT group is enabled.
Enabled: Allows enabling the re-sequence acknowledge timeout
value. This setting is enabled by default.
Duration (s): Allows selecting the timeout duration. Choices are from
1 to 10 seconds. The default setting is 1 second.
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FTB-8100 Series Transport Blazer