EXFO TG-300B Tone Generator - Manual (Page 8)

Introducing the TG-300B/LFD-300B FiberFinder 3
The switch and the display are located on the front of the unit. The battery
compartment is located on the back panel and the connection for the AC adapter is
at the bottom.
I
MPORTANT
When you are not using your unit, put the switch in the upward
position to avoid premature wear of the clamping mechanism.
Switch: Clamps the fiber
under test in place and
turns on the unit.
Display
Alignment groove: for the fiber
under test
Head of the unit
Protective cap: Reduces the influence that
ambient light might have on test results.
Battery
compartment
Back panel
AC adapter
connector