Tektronix TDS 200-Series, User Manual

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Operating Basics
TDS 200-Series Digital Oscilloscope User Manual
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2. Trigger status indicates the following:
Armed.
The instrument is acquiring pretrigger data. All
triggers are ignored in this state.
R
Ready.
All pretrigger data has been acquired and the
instrument is ready to accept a trigger.
T Trig'd.
The instrument has seen a trigger and is acquiring the
posttrigger data.
R
Auto.
The instrument is in auto mode and is acquiring
waveforms in the absence of triggers.
Scan.
The instrument is acquiring and displaying waveform
data continuously in scan mode.
Stop.
The instrument has stopped acquiring waveform data.
3. Marker shows horizontal trigger position. This is adjusted by the
Horizontal Position control.
4. Readout shows the time difference between the center graticule
and horizontal trigger position. Center screen equals zero.
5. Marker shows trigger level.
6. Readout shows numeric value of the trigger level.
7. Icon shows selected trigger type as follows:
– Edge trigger for the rising edge.
– Edge trigger for the falling edge.
– Video trigger for line sync.
– Video trigger for field sync.