2-7
Operating the Instrument
Exercise 4. Finding the Signal
Exercise 4. Finding the Signal
The purpose of this exercise is to demonstrate the Autoscale functio n. The
Autoscale function can be used to automatically set up the display for most
input signals.
To activate the Autoscale function, press Autoscale. A screen similar to
Figure2-1 will be displayed.
When the Autoscale function is enabled, the instrument quick ly analyzes the
signal and sets up the vertical, horizontal, and trigger to optimize the display
of the signal. Autoscale can find repetitive signals with:
• a frequency greater than or equal to 50 Hz
• a duty cycle greater than 1%
• an amplitude greater than 50 mV p-p
Figure2-1. Signal displayed using the Autoscale function
If you unintentionally press the Autoscale key or wish to disable the Autoscale
function, press Shift, Undo Autoscale. The instrument is reset to the settings that
existed just prior to pressing the Autoscale key.