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Displaying Waveforms
3-58
CSA8000B & TDS8000B User Manual
and then adjust it using the Horizontal Scale, Resolution, and P osition knobs.
Only channel w aveforms can have their horizontal parameters set directly.
Table 3--3 shows how horizontal operations relate to the waveform types; the key
points to remember follow:
H As Table 3--3 shows, horizontal operations affect all channel waveforms, but
in the selected view only. For example, you can select each time base in turn
and set one horizontal scale for all channel waveforms in the Main view,
another horizontal scale for those in the Mag1 view, and a third for those in
the Mag2 view.
H The instrument displays a reference waveform with horizontal settings in
effect at the time it was saved. You cannot adjust these settings; the
instrument disables the horizontal controls when you select a reference
waveform. See Saving and Recalling Waveforms on page 3--120 for more
information on reference waveforms.
H The instrument displays a math waveform with the horizontal settings
derived from its math expression. You cannot change these directly; the
instrument disables the horizontal controls when you select a math wave-
form. See Creating Math Waveforms on page 3 --101 for more information on
math waveforms.
H All waveforms in each time base are displayed fit-to-screen; that is, within
the full 10 horizontal divisions that the graticule provides.
Waveform Operations that Cross Time Base Views. Unlike the horizontal controls
just described, some controls apply to all time base views:
H Turning a waveform on or off in any view displays or removes it from all
views.
H Selecting a waveform in any view makes it the selected waveform in all
views; for example, select C1 in Main, and then select Mag1. C1 is the
selected waveform in Mag1. T urn on Mag2, and Mag2 displays on screen
with C1 selected.
H Vertical adjustments on a waveform in any time base adjust the waveform in
all time bases.
Display Controls vs. Acquisition Controls. For channel waveforms, the vertical
offset control and the horizontal controls you set adjust the instrument acquisi-
tion parameters. See the following descriptions for more information:
H Vertic al Acquisition Window Conside rations on page 3--14
H Horizontal Acquisition Window Considerations on page 3--17