EXFO FTB-8500 Series for FTB-500 - Manual (Page 76)

Introducing the Smart User Interface
62 FTB-8500 Series and FTB-8120NGE/8130NGE
Keyboard Usage

Hexadecimal keyboards: Allows entering hexadecimal values
(0 through 9 and A through F)
For MAC address
For IPv6 address