Interactive SourceMeter® Instrument Reference Manual Section 3: Functions an
2450-901-01 Rev. B/September 2013 3-91
Triggering
Triggers are signals that instruct the instrument to make a measurement. The Model 2450 can be set
to use the following triggering measurement methods:
• Continuous measurements: The instrument continuously makes measurements.
• Manual trigger key: The instrument makes measurements when you press the TRIGGER key on
the front panel.
• Trigger model: The instrument makes measurements according to the settings of the trigger
model.
Continuous measurement triggering
When you select the continuous measurement method, the instrument makes measurements
continuously.
The continuous measurement method is only available when you are controlling the instrument locally
(through the front panel).
The instrument stores the readings in a reading buffer. See Reading buffers (on page 3-10
) for detail
on the buffer options that are available.
If you press the front-panel TRIGGER key when the instrument is set to the continuous measurement
method, measurements are not made. Instead, a dialog box is displayed that asks if you want to
change the measurement method.
Trigger key triggering
When you select the manual trigger key method of triggering, the instrument only makes a
measurement when you press the front-panel TRIGGER key.
The manual trigger key measurement method is only available when you are controlling the
instrument through the front panel.
The instrument stores the readings in a reading buffer. See Reading buffers (on page 3-10
) for detail
on the buffer options that are available.
Trigger model triggering
When you select the trigger model measurement method, the instrument uses a trigger model to
control the sequence in which measurements occur. The Model 2450 trigger model is flexible,
allowing you to control as much or as little as needed for your measurement application.
For detail on the trigger model, see Trigger model (on page 3-95
).
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