Acquiring and Displaying Waveforms
3–26
TDS 500B, TDS 600B, & TDS 700A User Manual
Table 3–4: TDS 500B, TDS 724A, 744A Sampling Mode Selection (When Fit to
Screen is Off)
Time Base
1
One Channel Two Channels
Three or Four Chan-
nels
2
u50 ns Real-time Real-time Real-time
50 ns Real-time Real-time Equiv.-time or interpolate
25 ns Real-time
3
Equiv.-time or interpolate Equiv.-time or interpolate
t25 ns Equiv.-time or Interpolate Equiv.-time or Interpolate Equiv.-time or Interpolate
1
“u” means “slower than”; “t” means “faster than.”
2
Not applicable to TDS 500B and TDS 724A models, which can display only two out of
four channels at one time.
3
Sample mode is “Equiv. Time or Interpolate” for TDS 540B and 744A models
purchased with Option 1G. Option 1G limits these models to a maximum sample rate
of 1GS/second. See Option 1G on page A–1.
Table 3–5: 784A Sampling Mode Selection (When Fit to Screen is Off)
Time Base
1
One Channel Two Channels Three or Four Channels
u25 ns Real-time Real-time Real-time
25 ns Real-time Real-time Equiv.-time or interpolate
12.5 ns Real-time Equiv.-time or interpolate Equiv.-time or interpolate
t12.5 ns Equiv.-time or Interpolate Equiv.-time or Interpolate Equiv.-time or Interpolate
1
“u” means “slower than”; “t” means “faster than.”
NOTE. The oscilloscope will use the interpolation method selected in the display
menu to fill in the missing record points — either linear or sin(x)/x interpolation.
See Interpolation on page 3–19 for a discussion of interpolation.
To choose the event that stops the acquiring waveforms, do the following step:
Press SHIFT ACQUIRE MENU ➞ Stop After (main) ➞ RUN/STOP button
only, Single Acquisition Sequence, or Limit Test Condition Met (side). (See
Figure 3–15.) (TDS 500B and TDS 700A models only: single acquisition and
limit testing are ignored in InstaVu mode; see Incompatible Modes on
page 3–47.)
Stop After
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