INSTRUMENTS
04.4
Instruments
11-04
RoGator 418
General
On power-up the GEM performs a series of self-
test routines. The progress of these is shown in
the lower right-hand corner of the display. In the
unlikely event of a fault occurring the unit will emit
a low-toned bleep. The user can attempt to rectify
the fault by reverting to the factory defaults. Should
the fault persist please contact Ag Chem Europe
bv or your distributor for further guidance.
Following successful self-test; GEM will com-
mence to display engine data using the configura-
tion settings held in its non-volatile memory.
Press any of the four grey keys (key #1 to key #4)
to make the menu bar visible on the LCD. Press
the key below the relevant icon to select a display
mode.
A folded page icon with an arrow on the page indi-
cates that
pressing the associated
key will
step through the various
displays
associated with a
particular display format.
The menu bar will disappear after approximately
five seconds of key inactivity.
Some of the displayed data can be customised to
show, for example, metric or imperial units. In ad-
dition, it is possible for the user to define the full-
scale reading of several gauges to suit the engine
in use.
Setting Display Contrast and Lighting
Pressing the right-hand blue key when the menu
icons are not on display will bring up the lighting
and contrast menu.
The LCD has four back-light levels that allow the
display to be read in the dark. The appropriate
level is selected by pressing key #1 to decrease
the illumination or key #2 to increase it.
Adjusting the contrast of the LCD to an optimum
level ensures that the display is clearly legible and
that grey-scales are appropriately displayed. Con-
trast is reduced by pressing key #3 (which will tend
to lighten the display) and increased by pressing
key #4 (which will tend to darken the display).
The contrast and lighting menu is exited by press-
ing key #5.
The chosen settings are stored in non-volatile
memory and will be automatically reinstated
whenever the GEM is powered up.
Using the Soft Keys
The use of ‘soft’ keys vastly simplifies the GEM
operator interface by ensuring the user is only
presented with active keys that are appropriate to
the current function. This is achieved by using the
LCD to display icons that represent the current
function of each key. Positioning the icons above
the appropriate key allows each key’s function to
change whilst ensuring that the operator is always
presented with a clear and unambiguous under-
standing of what each key-press will do.
The Main Engine Display
This display incorporates three independent win-
dows and is intended to show the most important
and frequently accessed engine data.
To select the main engine display, press any of the
four grey keys to show
the top-level
menu icons. Then
press key #1
(the left-hand key).
The main window, at the top of the display, shows
two gauges; engine rpm on the left and engine oil
pressure on the right.
Lighting Adjust
Contrast Adjust
Main key Menu
