Reference
TDS1000/2000-Series Digital Oscilloscope User Manual
101
Trigger Frequency Readout
The oscilloscope counts the rate at which trigger events occur to
determine trigger frequency and di splays the frequency in the lower
right corner of the screen.
Key Points
Mode Options.
Mode option
Details
Auto (default) Forces the oscilloscope to trigger when it does not detect a
trigger within a certain amount of time based on the SEC/DIV
setting; you can use this mode in many situations, such as to
monitor the level of a power supply output
Use this mode to let the acquisition free-run in the absence of a
valid trigger; this mode allows an untriggered, scanning
waveform at 100 ms/div or slower time base settings
Normal Updates displayed waveforms only when the oscilloscope
detects a valid trigger condition; the oscilloscope displays older
waveforms until the oscilloscope replaces them with new ones
Use this mode when you want to see only valid triggered
waveforms; when you use this mode, the oscilloscope does not
display a waveform until after the first trigger
To perform a Single Sequence acqui sition, push the SINGLE SEQ
button.
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