EXFO FTB-800 Series for FTB-1 - Manual (Page 239)

Test Setup - Test Configurator, Timer, and System
NetBlazer 229
SyncE
SyncE
From the Test menu, tap Setup, Test Configurator, and the SyncE test
block.
ESMC Monitoring

ESMC (Ethernet Synchronization Message Channel) is a live value
monitored even when the test is not started.
An arrow next to the ESMC label indicates that ESMC valid information
frames are received or not.

A green arrow indicates that at least one ESMC valid information
frame, containing a valid FCS, was received within a second in the
last 5-second interval.

A red arrow indicates that no ESMC valid information frames were
received for more than 5 seconds.

A gray arrow indicates a pending state.

Received QL indicates the last Quality Level received. The
Received QL is a live value monitored even when the test is not
started.

QL Mismatch Monitoring check box when selected (default) enables
the Quality Level mismatch monitoring. The quality level characterizes
the clock quality in terms of network synchronization.

Expected QL available when the QL Mismatch Monitoring check box
is selected, allows the selection of the Expected Quality Level value.
See page 321 for more information.