EXFO FTB-8500 Series for FTB-500 - Manual (Page 200)

Traffic Analyzer Tabs
186 FTB-8500 Series and FTB-8120NGE/8130NGE
Capture
Trigger

Trigger Type: Allows to define the trigger source criterion that will be
used to automatically start/stop the capture when a received frame
matches the filter and the trigger criteria.

Manual: Automatically start the frame capture when the Capture
button is on (green LED) and the test is started (see Global Test
Status and Controls on page 42).

On Error: Select the error that will be used as the trigger to start
the frame capture.
FCS
Jabber
Oversize (Available when Oversize Monitoring is enabled. See
Oversize Monitoring on page 163)
Runt
Undersize
IP Checksum
UDP Checksum
TCP Checksum
Any Type (Any of the above errors).

Field Match: Select the field match that will be used as the trigger
to start the frame capture. Refer to Field Match Configuration on
page 506 for more information.
Cfg. Status: Indicates the status of the configured field match
configuration: Valid or Invalid. A valid status is required to be able
to start the capture.