User manual
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Signal Display
userwillseespecicinformationabouttheacquisition
status. This information will only be displayed if the signal
changes on the screen can persist over a longer period. If
the trigger condition has been met, the information
window shows a progress display for the post-trigger and
pre-trigger. If the trigger condition has not been met, the
information window shows the time of the last trigger
event (Trig?). If the trigger type AUTOMATIC is selected,
the instrument will switch to non-triggered acquisition
mode in case of a non-triggered condition over an ex-
tended period of time. This acquisition mode does not
display an info window as the data currently captured is
displayed.
❙ AUX. CURSORS:
Thissoftmenuallowsyoutodenethesettingsfor
auxiliary cursors. Pressing the function keys enables you
to activate or deactivate the cursors. The menu item
DEFAULTS resets the default settings.
7.2 Usage of the Virtual Screen
The graticule for the R&S®HMO3000 series includes 8 ver-
tical divisions but also has a virtual range of 20 divisions.
These 20 divisions may be used entirely by the optional di-
gital channels D0 to D7 resp. D15, the mathematical chan-
nels and the references signals. The analog channels may
use up to ±10 divisions from the center. Fig. 7.1 illustrates
the functionality of the virtual screen. The display includes
a section of 8 vertical divisions in gray. This section enab-
les you to display analog signals. The small bar next to the
graticule indicates the position of the 8 visible divisions
within the available 20 divisions. By pressing the SCROLL
BAR
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the bar will be activated and displayed in blue and
you can use the universal knob to shift the 8 visible divi-
sions (gray section) within the available 20 divisions. This
allows a simple and clear display of many individual signal
portions.
7.3 Signal Intensity and Persistence Function
The default setting (indicated as active when the INTENS/
PERSIST
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key is illuminated in white) allows you to use
the universal knob to change the intensity of the signal
display to anywhere from 0% to 100%. Persistence mode
allows the display of varying signals by enabling the inst-
rument to write several signals on the display simulta-
Fig. 7.1: Drawing of the virtual screen area and an example
neously. It is also possible to induce accelerated aging
of signals with an adjustable persistence from 50ms to
innite.Signalsoccurringlessfrequentlywillbedisplayed
in darker color and signals occurring more frequently will
be displayed in lighter color. Press the INTENS/PERSIST
key in the soft menu to select this mode. The soft menu
items TRACE, GRID and BACKLIGHT allow you to use the
universal knob in the CURSOR/MENU section to adjust the
grid intensity and the backlighting. The soft menu SET-
TINGS allows you to select the persistence settings for the
signals on the screen. The persistence function ensures
that signals will not be replaced when the screen is upda-
ted.Instead,thesignalswillpauseforaspecicamount
of time and then slowly begin to fade. This type of display
is very similar to that of an analog oscilloscope. There are
three possible settings for the duration of the persistence:
OFF, AUTOMATIC and MANUAL.
The option MANUAL allows you to set a duration of 50ms
toinnitebyusingtheuniversalknobortheKEYPAD
key.Ifanitedurationwasselected,newsignalswillbe
written on top of one another within this timeframe where
the most recent captures will be displayed more brightly
than older signals. For instance, if 300 ms is selected, the
display for the signal curves will become darker in 50ms
intervals and will be erased after 300 ms. The AUTOMATIC
settingallowsyoutoselecttheautomaticcongurationof
the persistence. If this setting is activated, the instrument
Fig. 7.3: Persistence function
Fig. 7.2: Menu for setting the signal display intensities