Installation
33
9.4 THE MAIN ELECTRONICS
The front section of the housing contains the microprocessor, display and
the batteries if fitted. It is possible to adjust the display contrast via a
small potentiometer on the board. The
Display Contrast
is shown below
and this can be adjusted for optimum contrast.
Adjacent to this control is a
RESET
switch which can be used to reset
the microprocessor.
Note that pressing this button will set the totals to
zero and set the preset value to a default figure of 10.
BATTERY
Battery
Battery
Display Contrast
C
O
N
T
R
E
C
S
Y
S
T
9.5 GROUNDING THE ENCLOSURE
NOTE. This only applies to the aluminium enclosure
On one side of the enclosure a ground point is available to attach the 202D
to the nearest protective earth (PE).
Earth Point