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MegaZoom Concepts and Oscilloscope Operation
To setup the Horizontal time base
To setup the Horizontal time base
1Press the Main/Delayed key in the Horizontal section of the front panel.
The Main/Delayed menu allows you to select the horizontal mode (Main,
Delayed, Roll, or XY), and set the time base vernier and time reference.
Main mode
2Press the Main softkey to select Main horizontal mode.
Main horizontal mode is the normal viewing mode for the oscilloscope.When the
oscilloscope is stopped, you can use the Horizontal knobs to pan and zoom the
waveform.
3 Turn the large knob (time/division) in the Horizontal section and notice
the change it makes to the status line.
When the oscilloscope is running in Main mode, use the large Horizontal knob
to change sweep speed and use the small knob ( ) to set the delay time. When
the oscilloscope is stopped, use these knobs to pan and zoom your waveform.
The time/division knob changes the sweep speed from 5 ns to 50 s for the
54620-series and from 1 ns to 50 s for the 54640-series in a 1-2-5 step sequence.
The sweep speed (seconds/division) value is displayed in the status line.
Main sweep
mode
Delayed
sweep mode
XY
mode
Time base
vernier
Trigger level
or threshold
Trigger
source
Delay
time
Roll
mode
Time
reference
Sweep
speed
Trigger
point
Time
reference
Current
sample rate