Pentax R-2501NS Instruction Manual page 21

[Other functions]
▽
F1
[ ]
▽
F2
[ ]
▽
F3
[ ]
▽
F4
[ ]
[ △ ]
F1
[ ▽ ]
F2
[RETICLE] F3
[LCD] F4
[ILLU] F5
[CLEAR] F5
[SELECT] F5
[How to move the menu number]
Example:
The cursor is located at Menu 1.
Press the numeric key 0 and 2 to
move to Menu 2 or press [F4][
[Trigger Key]
It's possible to measure while looking
stealthily at electronic tacheometer by a
trigger key (distance surveying key).
A trigger key is loaded into the stave lower
part.
Ranging is possible by one button while
looking stealthily at a telescope using a
tremor screw.
20
Moves the cursor to the left.
Moves the cursor to the right.
Moves the cursor up.
Moves the cursor down.
Goes back five items on the screen.
Gose forward five items on the screen.
Changing the reticle illumination when pressing illumination
key.
Changing the LCD contrast when pressing illumination key.
Changing the LCD illumination when pressing illumination
key.
Clear the figure.
Open the selection window.
▽
].