Functional Test
4–8
TDS 340A, TDS 360 & TDS 380 Technical Reference
3. Press AUTOSET.
4. Set the VOLTS/DIV to 1 V. Use the vertical POSITION knob to center the
waveform vertically on screen.
5. Set the SEC/DIV to 250 ms. Check that a square wave probe-compensation
signal of about five divisions in amplitude is on screen.
6. Check that one period of the square wave probe-compensation signal is
about four horizontal divisions on screen.
7. Check that the horizontal POSITION knob positions the signal left and right
on screen when rotated.
8. Press the front-panel button TRIGGER MENU, the main-menu button
Mode, and then the side-menu button Normal.
9. Check that the trigger-level readout for the main trigger system changes with
the trigger LEVEL knob.
10. Check that the trigger-level knob can trigger and untrigger the square-wave
signal as you rotate it. (Leave the signal untriggered.)
11. Check that pressing SET LEVEL TO 50% triggers the signal that you just
left untriggered.
12. Press the front-panel button ACQUIRE, the main-menu button Mode, and
then the side-menu button Sample.
13. Check that the oscilloscope displays an actively acquiring waveform. (Note
that there is noise present on the peaks of the square wave.)
14. Press the side-menu button Peak Detect. Check that the oscilloscope
displays an actively acquiring waveform with the noise “peak detected.”
15. Press the side-menu button Envelope. Check that the oscilloscope displays
an actively acquiring waveform with the noise displayed.
16. Press the side-menu button Average. Check that the oscilloscope displays an
actively acquiring waveform with the noise reduced.
17. Press WAVEFORM OFF to remove Channel 1 from the display.
18. Press CH 2 and move the probe to the CH 2 input.
19. Repeat steps 3 through 16 for Channel 2.
20. Disconnect the probe from the channel input and the PROBE COMP
terminal.
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