Tektronix TPS2012B, User Manual

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Reference
Options Settings Comments
Coupling AC, DC, Noise Reject, HF
Reject, LF Reject Selects the components of the trigger
signal applied to the trigger circuitry;
(See page 112,
Edge Trigger .)
More Use to switch between submenu
pages
1
Available only on a 4-channel oscilloscope.
Trigger Frequency Readout The oscilloscope counts the rate at which trigger events occur to determine trigger
frequency and displays the frequency in the lower right corner of the screen.
Key Points Trigger When.
The pulse width of the source must be ≥ 5 ns for the oscilloscope to
detect the pulse.
When options Details
=
≠
Triggers the oscilloscope when the signal pulse width is equal to or
not equal to the speci
fi ed pulse width within a ± 5% tolerance
<
>
Triggers the oscilloscope when the source signal pulse width is less
than or greater than the speci
fi ed pulse width
Refer to the Application Examples chapter for an example of triggering on
aberrant pulses. (See page 54, Triggering on a Speci fi c Pulse Width .)
Knobs and Buttons
Trigger Level knob. Use to control the Trigger Level.
Set to 50% button.
Use the Set to 50% button to quickly stabilize a waveform.
The oscilloscope automatically sets the Trigger Level to be about halfway between
the minimum and maximum voltage levels. This is useful when you connect a
signal to the Ext Trig BNC and set the trigger source to Ext, Ext/5, or Ext/10.
116 TPS2000B Series Digital Oscilloscope User Manual