Reference
The following c
onditions cause autorange to adjust settings:
Too many or too few waveform periods for a clear display of the trigger
source (excep
t when in Vertical Only)
Waveform amplitude too large or too small (except when in Horizontal Only)
Ideal trigger level changes
When you push the Autoset button for more than 1.5 seconds, t he oscilloscope
enters the autorange mode and adjusts controls to produce a usable display of
the input signal.
Function Setting
Acquire mode
Sample
Display format
YT
Display persist
Off
Horizontal position Adjusted
Horizontal view Main
Run/Stop
RUN
Horizontal scale (seconds/division)
Adjusted
Trigger coupling
DC
Trigger holdoff
Minimum
Trigger level Adjusted
Trigger mode Edge
Vertical bandwidth Full
Vertical BW limit
Off
Vertical coupling
DC
Vertical invert
Off
Vertical scale (volts/division)
Adjusted
The following changes to the setup of the oscilloscope deactivate autorange:
Vertical scale deactivates vertical autoranging
Horizontal scale d eactivates horizontal autoranging
Display or remove a cha nnel waveform
Trigger settings
Single sequence acquisition mode
Recall a setup
XY Display format
Persistence
72 TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual