EXFO FTB-800 Series for FTB-1 - Manual (Page 425)

Test Functions
NetBlazer 415
Filters and Packet Capture - Packet Capture

Generate & Save
Allows to generate and save the capture data. The name of the
captured file is automatically selected and contains the date and
time of the capture. Capture file bigger than 100Mbytes will be split
into multiple files.
Tapping on the Cancel button stops the capture generation. The
captured data already processed will be saved.
Note: The export process may take several minutes.
Once generated, the capture file will be automatically opened in
Wireshark when the View File After Generation check box is
selected.
The capture file report may also be manually opened within
Wireshark typically using Windows Explorer.