EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 103)

Testing Fibers in Advanced Mode
OTDR 89
Setting Optical Switch Parameters
4. From the Channel Selection section, select the boxes corresponding
to the channels you want to use and clear the boxes of those you do
not want to use.
Note: You can quickly select/deselect channels by using the Select All and
Deselect All buttons.
5. If necessary, rearrange the order of the channels.
5a. From the list of channel, select a channel to move.
5b. Use the Move Up and/or Move Down buttons to modify the order.
6. If necessary, adjust the operation mode. For more information, see
Selecting the Operation Mode on page 86.
7. Press Apply to confirm your changes and OK to return to the main
window.