312 6000 Series Oscilloscope User’s Guide
6 Displaying Data
AutoScale automatically configures the oscilloscope to best
display the input signals by analyzing any waveforms present at
each channel and at the external trigger input. This includes the
digital channels on MSO models.
AutoScale finds, turns on, and scales any channel with a
repetitive waveform that has a frequency of at least 50 Hz, a
duty cycle greater than 0.5%, and an amplitude of at least 10 mV
peak-to-peak. Any channels that do not meet these
requirements are turned off.
The trigger source is selected by looking for the first valid
waveform starting with external trigger, then continuing with
the highest number analog channel down to the lowest number
analog channel, and finally (if the oscilloscope is an MSO) the
highest number digital channel.
During AutoScale, the delay is set to 0.0 seconds, the sweep
speed setting is a function of the input signal (about 2 periods of
the triggered signal on the screen), and the triggering mode is
set to edge. Vectors remain in the state they were before the
AutoScale.
Undo AutoScale
Press the Undo AutoScale softkey to return the oscilloscope to the
settings that existed before you pressed the AutoScale key.
This is useful if you have unintentionally pressed the AutoScale
key or do not like the settings AutoScale has selected and want
to return to your previous settings.