Screen Display Under Window Extension; Trigger Hold-Off Time Adjustment - Tenma 72-2650 Operating Manual

72-2650/72-10510/72-8225A /72-8705A/72-8710A user manual
The Window extension time base function is used to
observe the waveform detail for a given window of the
waveform. The user can enable this function by pressing
the F3 button at the horizontal function menu.
Figure 2-12 Screen Display under Window Extension
Under Window extension time base, there are two
display areas, as shown in the figure above. The original
waveform is displayed in the upper part, this area can be
moved left and right by turning the horizontal POSITION
knob or can be enlarged and reduced by turning the
horizontal SCALE knob.
The waveform generated through horizontal extension
time base of the selected original waveform area shall be
displayed in the lower part. As the waveform displayed
in the whole lower part corresponds to the selected area
in the upper part, the extension time base can be enhanced
by turning the horizontal SCALE knob to reduce the
selected area of the waveform.

Trigger hold-off time adjustment

Trigger hold-off time is the time interval between two
trigger events (100ns by default).
Trigger hold-off time can be adjusted by using the
multi-purpose knob at the horizontal function menu.
During trigger hold-off, DSO will not be triggered by any
new events until the hold-off time is over. For example, if
a set of pulse train shall be triggered from the first pulse
upon request, then the hold-off time can be set as the
23