Keysight Technologies InfiniiVision 3000 X Series, User Manual

Page: 33 / 432

Getting Started
1
Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide 33
2 If you want to return to the oscilloscope settings that existed before , press Undo
AutoScale .
3 If you want to enable "fast debug" autoscaling, change the channels
autoscaled, or preserve the acquisition mode during autoscale, press Fast
Debug , Channels , or Acq Mode .
These are the same softkeys that appear in the AutoScale Preferences Menu.
See "To set AutoScale preferences" on page 299.
If you see the waveform, but the square wave is not shaped correctly as shown
above, perform the procedure "Compensate Passive Probes" on page 34.
If you do not see the waveform, make sure the probe is connected securely to the
front panel channel input BNC and to the left side, Demo 2, Probe Comp terminal.
How AutoScale
Works
Auto Scale analyzes any waveforms present at each channel and at the external
trigger input. This includes the digital channels, if connected.
Auto Scale finds, turns on, and scales any channel with a repetitive waveform that
has a frequency of at least 25 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.