Tektronix CSA7404B, Руководство пользователя

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Displaying Waveforms
3- 122
CSA7000B Series & TDS7000B Series Instruments User Manual
Operations on Waveforms. In general, the method of adjusting (vertically scaling,
offsetting, positioning, and so on) is from the front panel: adjust a waveform
using its Vertical Scale and Position knobs
.
Table 3--7 summarizes operations you can perform for the three waveform types.
Table 3- 7: Operations performed based on the waveform type
Control function Waveform supports
Ch Ref
1
Math
Operating notes
Vertical Scale Yes Yes Yes Math and reference waveforms are scaled and positioned from their
t t l i d
Vertical Position Yes Yes Yes
setup control windows.
Vertical Offset Yes No No
Horizontal Scale Yes Yes Yes Waveforms are adjusted according to the Zoom Lock setting.
Horizontal Position Yes Yes Yes
Horizontal Record Length Yes No No
Quick Horizontal and Vertical
Scale Adjust (Zoom) Yes Yes Yes Dragging a box around a portion of the selected waveform adjusts
horizontal scale to fill the zoom graticule with the boxed portion (see
Setting MultiView Zoom Controls on page 3--125).
1
Pixel-map reference waveforms, those saved while in fast acquisitions mode or waveform database mode, cannot be
repositioned or rescaled.
Graticules. Select a graticule size from the Graticule Size drop-down list in the
Zoom Setup window to change the size of the acquisition waveform and zoomed
waveform windows. The 50-50 selection allocates half of the available display
for the zoomed graticule and half of the available display for the acquisition
window. The 80-20 selection allocates 80% of the available display for the
zoomed graticule and 20% for the acquisition window. Touch 100 to use the
entire display for the zoomed graticule.
Figure 3--32 on page 3--120 shows the elements of the graticules; the elements
are the same for each graticule displayed.
Operations on the Timebase.
In general, the method of adjusting (horizontally
scaling, setting resolution/record length, positioning, and so on) is from the front
panel: adjust the timebase using the Horizontal Scale, Resolution, and Position
knobs
. Only channel waveforms can be set directly.
Table 3--7 shows how horizontal operations relate to the waveform types; the key
points follow:
H
The instrument displays a reference waveform with horizontal settings in
effect at the time it was saved. You cannot adjust these settings. See
Saving
and Recalling Waveforms on page 3--227 for more information on reference
waveforms.