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Autoset
TDS 620A, 640A, & 644A User Manual
Table 3-2: Autoset Defaults
Control
Changed by Autoset to
Selected channel Numerically lowest of the displayed
channels
Acquire Mode Sample
Acquire Repetitive Signal On
Acquire Stop After RUN/STOP button only
Display Style Vectors
Display Intensity — Overall
(TDS 640A & TDS 620A)
If less than 50%, set to 75%
Display Format YT
FastFrame
TM
Off
Horizontal Position Centered within the graticule window
Horizontal Scale As determined by the signal frequency
Horizontal Time Base Main Only
Horizontal Record Length Unchanged
Limit Test Off
Trigger Position Unchanged
Trigger Type Edge
Trigger Source Numerically lowest of the displayed
channels (the selected channel)
Trigger Level Midpoint of data for the trigger source
Trigger Slope Positive
Trigger Coupling DC
Trigger Holdoff 0
Vertical Scale As determined by the signal level
Vertical Coupling DC unless AC was previously set.
AC remains unchanged.
Vertical Bandwidth Full
Vertical Offset 0 volts
Zoom Off