EXFO FTB-8500 Series for FTB-200 - Manual (Page 120)

Creating and Starting a Test Case
106 FTB-8500 Series and FTB-8120NGE/8130NGE
Fibre Channel BERT Test Case
3. Press the Framing node.
3a. Select the test framing
mode.
Unframed consists in
sending a frame without EOF (End Of Frame).
Unframed with the Enable Sync check box selected consists of
continuously sending frames that last approximately 1 sec. Thus
sending a sync pattern that regularly keeps the link synchronized.
Frames are separated by the minimum Inter-Frame Gap (IFG).
Framed Layer 1 consists of sending a valid frame (8 to 2148
bytes) without Header, and CRC (Cyclic Redundancy Check).
Refer to Size on page 233 for more information on the frame size.
Framed Layer 2 consists of sending a valid frame (36 to 2148
bytes) including Header and CRC. Refer to Size on page 233 for
more information on the frame size.
Note: There is nothing to configure for FC Framed Layer 1 and FC Framed
Layer 2.