TDS 420A, TDS 430A, TDS 460A & TDS 510A User Manual
3–105
Saving and Recalling Waveforms
You can store a waveform in any of the four internal reference memories or to
the floppy disk. This section describes how to save, delete, and display reference
waveforms.
NOTE. If you select the 120K record length on a TDS 400A, then you can only
save one reference waveform. Also, you can only use/display four waveforms.
For example: if you display a math waveform that is the sum of CH 1 and CH 2,
even if CH 1 and CH 2 are not displayed, you have used three waveforms.
Therefore, you can only display one additional waveform.
The digitizing oscilloscope can display up to 11 waveforms at one time. That
includes waveforms from the input channels, four reference waveforms, and
three math waveforms. You can save any combination of different size waveform
records as long as the total is less than the capacity of nonvolatile waveform
memory.
To Save a Waveform
To save a waveform, do the following steps:
1. Select the channel that has the waveform you want to save.
NOTE. Before doing step 2 that follows, note that if you use a reference memory
location labeled active (see Figure 3–56), you overwrite the waveform that was
previously stored there.
2. To store a waveform internally, press save/recall WAVEFORM
➞ Save
Waveform
(main) ➞ Ref1, Ref2, Ref3, or Ref4 (side).
NOTE. Before doing step 3 on a TDS 400A, note the current Save Format (see
Figure 3–58). If you desire to save to a different format, see To Select the Save
Format on page 3–107.
3. To store a waveform to disk, press save/recall WAVEFORM
➞ Save
Waveform
(main) ➞ To File (side). Then use the general purpose knob to
select the exact file from the resulting scrollbar list. Finally, press Save To
Selected File to complete the operation.
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