Tektronix TPS2012B, User Manual

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Reference
Key Points Scale.
If waveform acquisition is stopped (using the Run/Stop or Single button),
the Scale control expands or compresses the waveform. Use to zoom in on a
detail of the waveform.
Scan Mode Display (Roll Mode).
When the Scale control is set to 100 ms/div
or slower and the trigger mode is set to Auto, the oscilloscope enters the Scan
acquisition mode. In this mode, the waveform display updates from left to right.
There is no trigger or horizontal position control of waveforms during scan mode.
(See page 95,
Scan Mode Display .)
Window Zone.
Use the Window Zone option to de fi ne a segment of a waveform
to see in more detail (zoom). The Window time base setting cannot be set slower
than the Main time base setting.
Vertical bars de fi ne Window Zone
Main time base displayed Window zone displayed
Window.
Expands the Window Zone to cover the entire screen. Use to change
between two time bases.
NOTE.
When you change between the Main, Window Zone, and Window views,
the oscilloscope erases any waveform saved on the screen through persistence.
Persistence is erased with Horizontal menu changes.
Set Trigger Holdoff. Use holdoff to help stabilize the display of complex
waveforms. (See page 117, Trigger Holdoff .)
Math
Push the Math button to display waveform math operations. Push the Math
button again to remove math waveforms. (See page 120, Vertical Controls .)
Options Comments
+, -, ×, FFT Math operations; see the next table
Sources Sources used for the operations; see the next table
TPS2000B Series Digital Oscilloscope User Manual 105