geo-FENNEL FET 220K-L Mode D'emploi page 22

EN
DISTANCE MEASUREMENT USING THE STADIA METHOD
A distance measurement can be carried out with FET 220K-L by using the crosshair.
AUTOMATIC SHUT-OFF
The automatic shut-off function will power off the instrument after 20 minutes without operation.
For activation and de-activation of this mode please refer to PARAMETER SETTING.
DISPLAY ILLUMINATION
In dark surroundings and at unfavourable light conditions the display can be illuminated.
Press SFT + V% to power on / off the display illumination.
USE OF THE LASER
With the built-in laser beam the target can be aimed at and marked. By focussing the laser dot can be
adjusted. Such, the marking of the target can be acomplished by one person only.
The laser beam is pulsed and can therefore be used together with any geo-FENNEL receiver for rota-
ting lasers. Thus, FET 220K-L can be applied for any task that would require the use of a rotating laser.
The smallest diameter of the laser dot will be achieved if the laser beam is focussed.
By means of the laser beam all measuring tasks can be acomplished and will be visualized to the user.
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· Read the levelling rod.
· Aim the instrument's telescope at the levelling
rod.
· Mulitply the value of the distance „d" between
the two stadia hairs with 100.
· The result „D" = the distance from the in-
strument centre to the levellig rod (D = d x 100).