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661: Difference between revisions
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produces an internal trigger signal. | produces an internal trigger signal. | ||
* An external trigger signal can be fed to the timing unit via its front panel. | * An external trigger signal can be fed to the timing unit via its front panel. | ||
* The timing unit can be operated in in free-running mode the resulting pulse signal | * The timing unit can be operated in in free-running mode and the resulting pulse signal | ||
can be the stimulus for the device under test. | can be the stimulus for the device under test. This mode is similar to a TDR. | ||
* The calibration signal generator in the 661 can be used as trigger source, as described below. | * The calibration signal generator in the 661 can be used as trigger source, as described below. | ||