Function buttons description, Power sources, Function buttons description power sources – EXFO FTB-2 User Manual
Page 18
 
Introducing the FTB-2 and FTB-2 Pro
8
FTB-2 and FTB-2 Pro
Function Buttons Description
Function Buttons Description
Your unit is equipped with function buttons that give you access to features 
at all times. 
The table below shows an overview of their purpose.
Power Sources
Your unit operates with the following power sources:
AC adapter/charger (connected to standard power outlet—indoor use 
only).
When it is connected to an external power source with the AC 
adapter/charger, the unit will function even if the batteries are not 
present.
Button
Meaning
Displays the on-screen keyboard.
Press once to show the keyboard. Press once again to
hide it.
Takes a screen capture. Hold down for a few seconds.
Enables you to switch from one task to another. It is the
equivalent of pressing the ALT + TAB key combination on a
hardware keyboard.
Press once to view the list of running applications.
Press as many times as needed to select the desired
application.
Turns your unit on and off.
Press for one second to turn the unit on.
For more information on the various ways to turn off your 
unit, see Turning Off Your Unit on page 36.