Tektronix TBS2072, Руководство пользователя

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Trigger setup
Trigger setup
Use these procedures to set up the oscilloscope to trigger on a signal. (See page 26, Trigger concepts .)
Triggering on a waveform edge
Use this procedure to set the oscilloscope to trigger on the rising or falling edge of a waveform.
1. Push the Trigger Menu front-panel button.
2. Push the Type side-menu button.
3. Use the Multipurpose knob to select and click Edge .
4. Push the Source side-menu button and use the Multipurpose knob to select and click the channel to use as the trigger
signal source, or select AC Line to use the AC power source frequency as the trigger signal.
5. Push the Coupling side-menu button and use the Multipurpose knob to select and click the trigger coupling. (See
page 28, Trigger coupling .)
6. Push the Slope side-menu button to select
between rising and falling slope edges on
which to trigger the oscilloscope.
7. Push the Level side-menu button and use the Multipurpose knob to select and click the trigger level entry method:
Click Level and use the Multipurpose knob to manually set the trigger level.
Click Choose Preset and use the Multipurpose knob to set the trigger level to a prede fi ned signal logic family level
(TTL, CMOS, ECL, and so on) or to 0.
Click Set to 50% to set the trigger level to 50% of the signal peak-to-peak level.
NOTE. You can use the Trigger Level knob to immediately change the trigger level and momentarily display a long horizontal
line (or two lines for a runt trigger) across the waveform to show the trigger level(s) in relation to the waveform.
Push the Trigger Level knob to immediately set the trigger to 50% of the signal peak-to-peak level.
36 TBS2000 Series User Manual