Specifications
22
Subject to change without notice
7 Display of signals
The following chapter describes the selection and display of sig-
nals from various sources and the available display modes.
7.1 Displaysettings
The HMO features a high quality TFT – VGA (640 x 480 pixel re-
solution) display with LED backlighting. The basic settings will
become accessible in the menus which will open after pushing
the key DISPLAY in the GENERAL section of the front panel. If
the menu item SCROLL MODE is activated, a rolling bar will
appear to the right of the graticule; a virtual display window of
20 divisions will become available which can be shifted up and
down with the universal knob. A detailed description will follow
in the next chapter.
There are 3 more menu items on the rst page:
The respective soft menu key will toggle between ON and OFF. If
ON is activated, only the captured samples will be shown as dots.
If OFF is activated, interpolated points will be shown as well.
The respective soft menu key will toggle between ON and OFF.
If ON is activated, those display points will be shown darker
which appear most frequently. If OFF is activated, they will be
shown brighter.
The respective soft menu key will toggle between ON and OFF.
If ON is activated, the color of the display points are shown
from blue over magenta, red and yellow up to white with gro-
wing number of appearing points. If OFF is activated, the most
frequently appearing ones will be shown brighter and the rarer
ones darker. If you enter page 2 of the menu, you will have three
additional choices.
If this menu item is selected, the submenu which opens up will
allow you to choose:
– LINES:
The graticule is divided into horizontal and vertical divisi
-
ons.
– CENTER CROSS:
– There will be just one center vertical line and one center
horizontal line; the divisions will be marked by dots.
– OFF: The screen will be empty.
If this menu item is selected, a submenu will open up which
allows change of the transparency of the info windows (e.g.
for showing changes of the offset) from 0 to 100 %. This is done
with the universal knob. The info windows of the POSITION
and the CURVE INTENSITIES may be switched on or off if their
respective menus are chosen.
Pushing the respective soft menu key will open a submenu
which allows you to switch the auxiliary cursors for the trigger
level, the trigger time and the channel cursors on or off.
7.2 Useofthevirtualscreenarea
The HMO graticule has 8 vertical divisions but there is a virtu-
al range of 20 divisions. These may be used by the 16 digital
channels D0 to D15, the math functions and the references.
The analog channels can only use up to ±5 divisions from the
center.
Fig. 7.1: Drawing of the virtual screen area and an example
The picture above explains the function of the virtual screen. The
visible 8 divisions are shown in grey; this is the area available
for analog signals. To the right of the graticule there is a small
bar which indicates the position of the visible 8 divisions within
the possible 20 divisions. By pushing the key SCROLL BAR the
bar will be activated indicated by its color changing to blue; now
turning the universal knob will shift the visible 8 divisions (grey
area) within the available 20 divisions. This allows a simple and
clear display of many individual signal portions.
7.3 Signalintensityandpersistencefunctions
In the standard mode, the key INTENS/PERSIST will light up
white: the intensity of the signal display can be changed with the
universal knob from 0 to 100 %. The persistence mode may be
selected for the display of varying signals: this is a storage mode
such that several curves may be written to remain on the screen.
Also the so called „Variable Persistence“ may be selected: in
this mode the persistence can be changed from 50 ms to innity;
this will cause the most recent portion of the signal to appear
bright while the preceeding portions will fade in proportion to
the time elapsed. This mode can be selected in the soft menu
which will open upon pushing the key INTENS/PERSIST; the
signal intensity can be changed also in this menu.
Fig. 7. 2: Menu for setting the signal display intensities
Two more menu items are available: and by
pushing the respective soft menu keys; the intensities can be
changed with the universal knob. The soft menu key next to the
lowest menu item toggles between and of the LED’s of
trigger System