EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 145)

Test Setup - Test Configurator, Timer, and System
Power Blazer 133
Frequency
Frequency
From the Test menu, tap Setup, Test Configurator, tap on the interface
block, and on the Frequency tab.
TX Frequency

TX Frequency (GHz) indicates the frequency (actual frequency +
Frequency offset) used for transmission.

Offset (ppm) check box, when selected (cleared by default), allows to
set the frequency offset that will be generated. Use the “+” or “-”
button to respectively increment or decrement the frequency offset
value based on the defined Increment/Decrement Size, or directly
type the frequency offset value in the field. The range is ±120 ppm for
Ethernet test applications, ±50 ppm for Transport Framed, and
±120 ppm for Transport Unframed test applications.

Step Size (ppm) allows to set the increment/decrement value (from
0.1 to either 50 or 120 depending on the test configuration) that will be
used when changing the frequency offset with the “+” or “-” button.
Interface Frequency Offset a
a. The frequency offset range is guaranteed for a source signal at 0 ppm. 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
OTU3 ± 50 ppm (Framed)
± 120 ppm (Unframed) 43018413559 bit/s
OTU3e1 44571000000 bit/s
OTU3e2 44583000000 bit/s
OTU4 111810000000 bit/s