EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 102)

Testing Fibers in Advanced Mode
88 OTDR
Setting Optical Switch Parameters
Setting Optical Switch Parameters
You can configure your switch to use any combination of channels in the
desired order (for example, channel 2, then 4, then 1 will be tested). It is
always possible to reset the order to the default value (channel 1, then 2,
then 3, and so on). You can test with a switch in Advanced mode only.
To set the channel configuration:
1. From the main window, press Setup.
2. From the Setup window, go to the Automation tab.
3. From the Switch box, select the desired switch (press the arrow next to
the box to view the available switches).
Note: If you no longer want to use a switch in your test, simply select None.
I
MPORTANT
The application can only use switches whose type matches the fiber
type (singlemode or multimode). To test both singlemode and
multimode fibers, you will need two different switches.
I
MPORTANT
To avoid heavy losses in multimode testing, the switch must also
match the core of the fiber under test (50 μm or 62.5 μm).