EXFO FTB-800 Series for FTB-1 - Manual (Page 123)

Test Setup - Test Configurator, Timer, and System
NetBlazer 113
Clock

Line Coding, available with DS1 and E1, allows the selection of the
interface line coding.
For DS1: AMI and B8ZS (default).
For E1: AMI and HDB3 (default).

Framing, available with DS1 and E1, allows the selection of the
interface framing.
For DS1: SF, SLC-96, and ESF (default).
For E1: PCM30 (default), PCM30 CRC-4, PCM31, and PCM31 CRC-4.
Frequency (MHz) displays the frequency of the generated clock signal on
the port.
Clock Out indicates that a clock is generated on the port (green) or not
(red).