Manual
C300/C310...C340 English
Page 9 of 21
THUMB-WHEEL
4 Operation
In contrast to conventional hand-held measuring devices, the
C3x0 devices do not have a keypad, but what is known as a
"THUMB-WHEEL"
on the left-hand side of the device.
The wheel can be turned up or down through 15° and can also
be pressed in the middle position.
Turning the wheel up selects the upper menu. Turning the
wheel down selects the lower menu for configuration and
equalisation.
The thumb-wheel has to be pressed in the middle position to
switch the device on or off and to confirm input values.
