EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 417)

SCPI Command Reference
OTDR 403
Product-Specific Commands—Description
:FETCh[1..n]:LFIBer?
Description This query returns a state indicating whether live
activity has been found on the fiber, after an
initiate (INIT) command. This is valid for all
acquisition modes.
*RST clears this setting.
Syntax :FETCh[1..n]:LFIBer?
Parameter(s) None
Response Syntax
Response(s) LiveFiberState:
The response data syntax for is
defined as a
element.
The current , where:
1 - (TRUE) a live activity was found on fiber.
0 - (FALSE) no live activity found on fiber.
Example(s) INIT
INIT:STAT? Returns 0 when acquisition is
complete.
FETC:LFIB? Returns 1 if a live activity was found
on fiber.