
7 Analog Modules Synchronization
246 System Reference, January 2001
Figure 114 Timing Chart and Delay Factor
The above timing chart is an example of analog measure-
ment.
Synchronization Categories Required levels for accuracy of the synchronization
between the digital channel operation and analog module
operation depend on your application.
For example, if you want to measure analog waveform
signal output from DUT regardless of the timing of digital
signals to be applied to DUT, the test does not require the
certainty of the synchronization. In this case, you do not
have to consider these delay factors.
If you want to apply an analog waveform to a DUT with
digital signals simultaneously, the test may require some
certainty of the synchronization. That is, these delay
factors cannot be bypassed.
The user actions for the synchronization can be catego-
rized into the following three levels, in terms of required
accuracy level. For the first level, your application needs
Trigger signal
@trigger input pin
of analog module
Measurement start
@Analog module pin
Analog signal
@Analog module pin
Signal line
length
Analog signal
@DUT pin
Trigger line
length
Trigger-to-signal
delay
Trigger signal
@digital pin
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