EXFO FTB-800 Series for FTB-1 - Manual (Page 55)

Test Setup - Test Applications
NetBlazer 45
DSn/PDH BERT
DSn/PDH BERT
Allows validation of the DSn or PDH transport protocol by performing a
BERT test to check the traffic or payload stability over a network facility.

Typical DSn/PDH BERT test applications:
Network
under test
Testing Unit DUT Loopback
FTB-700G/800 Series
Network
under test
Testing Unit Testing Unit
FTB-700G/800 Series FTB-700G/800 Series