Reference
Error Log. The e
rror log contains summary data g athered over the life of the
oscilloscope. The error log lists the last 100 errors encountered. The last error
in the list is the most recent.
Under normal circumstances, the error log should be empty. Any entry in the
error log may indicate a hardware failure or firmware fault. If you can repeatedly
cause an entry to be added to the error log, please contact a Tektronix service
representative for assist ance.
Vertical C
ontrols
You can use the vertical controls to select waveforms, adjust the waveform
vertical position and scale, and set input parameters. All vertical operations affect
the selec
ted waveform. Push a channel button (1, 2, 3, or 4), the Math button, or
the Ref button to select a waveform.
For info
rmation on the Math Menu, refer to the description on Math and FFT.
(See page 72.)
Vertical Position Control
Use th
e vertical Position c ontrol to locate the selected waveform in the display.
When you change the vertical position, a horizontal line temporarily appears to
show you the ground reference level on the screen. After the line disappears, the
ground reference level is marked at the left of the graticule.
If acquisition is stopped you can still reposition waveforms for analysis. The new
position setting is used when acquisition resumes.
Waveform Off
Push the Waveform Off button to remove the selected waveform from the display.
You can still use the channel as a trigger source.
Vertical Scale Control
Use the vertical Scale control to set the vertical scale factor of the selected
waveform in 1-2-5 increments. If acquisition is stopped you can still rescale
waveforms for analysis. The new scale setting is used when acquisition resumes.
You can also make fine adjustments to the vertical scale. (See page 115, Channel
Buttons.)
114 TDS3000C Series Oscilloscope User Manual
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