GammaTwin
Soware Version 1.4/1.5
Operaon Manual
9
3. Putting into operation
3.1 Before use
Before starng the instrument the user has to
ensure that the GammaTwin is not damaged
and is correctly equipped with two baeries of
the type AAA 1,5 V (polarity acc. to the corres-
ponding label). For perfect contacng, please
ghten the screw of the baery compartment
by means of a coin. Remove the protecve foil
from the display.
3.2 Switching ON/OFF
The GammaTwin is turned on by briey press-
ing the -buon. The instrument passes a self-
test, in which the user may control the alarm
signal and all segments of the display. Further-
more, the serial number, the soware version
as well as the check sum of the soware are
displayed. The PTB-approved version of the
rmware and the corresponding check sum are
indicated in chapter 8 (technical data). If there
is no error, the GammaTwin is directly starng
operaon.