EXFO FTB-8500 Series for FTB-500 - Manual (Page 241)

Stream Generation Tabs
Ethernet and Fibre Channel Application 227
Frame Configuration (Fibre Channel)
Frame Configuration (Fibre Channel)
Note: Frame Configuration is only available with Fibre Channel Framed Layer 1
or Framed Layer 2.
Press TEST, Stream Gen, and Frame Config.
Frame Delimiters

SOF: The SOF represents the Start Of Frame delimiter. The default
setting is SOFn3 for Framed Layer 1 and is the only choice for Framed
Layer 2. Choices for Framed Layer 1 are:
SoF Description SoF Description
SOFc1 SOF - Connect Class 1 SOFi3 SOF - Initiate Class 3
SOFi1 SOF - Initiate Class 1 SOFn3 SOF - Normal Class 3
SOFn1 SOF - Normal Class 1 SOFc4 SOF - Activate Class 4
SOFi2 SOF - Initiate Class 2 SOFi4 SOF - Initiate Class 4
SOFn2 SOF - Normal Class 2 SOFn4 SOF - Normal Class 4
SOFf SOF - Fabric