EXFO FTB-8500 Series for FTB-500 - Manual (Page 151)

Port Tabs
Ethernet and Fibre Channel Application 137
Optical TX
Frequency
Note: Frequency offset is not available when Through Mode (FTB-8510B only) is
selected.

Frequency Offset (ppm): Available with FC 1x/2x/4x/10x, and 10 Gig-E
interfaces only. Allows entering a positive or a negative frequency
offset in ppm. The default setting is 0.

Actual Frequency (bps): Available with FC 1x/2x/4x/10x, and 10 Gig-E
interfaces only. Indicates the frequency (actual frequency + Frequency
offset) used for transmission.

Nominal Frequency (bps): Indicates the nominal frequency of the
signal.

On/Off button: Allows enabling the frequency offset generation. This
setting is disabled (Off) by default.
Interface Frequency Offset a
a. The frequency offset range is guaranteed for a source signal at 0 ppm offset. In the event that the source
signal already has an offset then, the output signal may exhibit an offset larger than the range specified.
Nominal Frequency
100 Mbps ± 120 ppm
b
b. Not supported on FTB-8120NGE/FTB-8130NGE.
125000000 bps
1000 Mbps ± 120 ppm
b
1250000000 bps
10 Gig-E LAN ± 120 ppm (FTB-8510G)
± 50 ppm (FTB-8120NGE/ FTB-8130NGE)
10312500000 bps
10 Gig-E WAN ± 120 ppm (FTB-8510G)
± 50 ppm (FTB-8120NGE/ FTB-8130NGE)
9953280000 bps
FC 1x ± 50 ppm 1062500000 bps
FC 2x ± 50 ppm 2125000000 bps
FC 4x ± 50 ppm 4250000000 bps
FC 10x ± 50 ppm 10518750000 bps