EXFO FTBx-88260 - External Reference; Internal GNSS

Setup
Power Blazer 283
External Reference / Internal GNSS
External Reference / Internal GNSS
External Reference / Internal GNSS, available with Time Error / Wander
test application, allows configuring the external reference or internal GNSS
signal.
From the test menu, tap Setup, Test Configurator, and the External
Reference / Internal GNSS block.
Reference
 Mode allows selecting the clock source; forced to Internal GNSS for
Time Error with an Ethernet interface.
 External Reference (default): Clock signal from the EXT CLK port.
EXT REF status icon indicates if the signal is valid (green) or
impaired (red).
 Internal GNSS: 1PPS clock signal provided by the Internal GNSS
Receiver. Requires a GNSS antenna connected to the ANTENNA
port (88260). The Internal GNSS receiver settings are configurable
from System - GNSS on page 436.
GNSS status icon indicates if the reference from the internal GNSS
receiver is valid (green) or not (red).
HOLDOVER status icon indicates if the reference from the internal
GNSS receiver is either in holdover with its performance within
(green) / outside (yellow) its uncertainty specifications or the
reference is not valid (red).