Samsung PN51E6500EFXZA - Manual (Page 296)

your dictionary.
Using the QWERTY Keypad
If you have a USB or Bluetooth
for LED
6500 Series and above, PDP TV
keyboard
attached to the TV, and the screen is
displaying the QWERTY keyboard, you
can use the attached keyboard just like
a regular keyboard. Type a character
and the character appears on the
screen.
If you don't have a USB or Bluetooth