EXFO FTB-1, User Manual

Page: 268 / 675

Test Setup - Test Configurator, Timer, and System
256
FTB-700G/800 Series
Signal - Signal Configuration (OTN)
Signal - Signal Configuration (OTN)
Note:
The following signal configuration parameters are available from the
interface block.
From the
Test
menu, tap
Setup
,
Test Configurator
, the interface block,
and on the Signal tab.

OTU2
,
OTU2f
,
OTU1f
,
OTU2e
,
OTU1e
, or
OTU1
Note: At least one of the two check boxes, FEC or Scrambler , must be selected in
order to prevent potential alarms caused by a lack of bit transition on the
optical signal. For example to disable
FEC , first select the Scrambler check
box then clear the FEC check box.

FEC check box, when selected (default), enables the FEC in TX/RX
and allows to detect, report, and correct up to 8 symbol errors
(Correctable) per codeword. If there are over 8 symbol errors
detected, they are reported as uncorrectable errors.

Scrambler check box, when selected (default), provides enough
“0” and “1” transitions on the optical signal for clock recovery.