Pulse trains, triggers, or delays are not the length specified in RPvdsEx

Tech Note: TN0143
Product: RPvdsEx
Version: All
Date Added: 2004-09-23


When using RPvdsEx components such as PulseTrain, Schmitt, and TTLDelay, that define a high, low, or delay period based on time, the actual time value will be the closest interval depending on the sample rate. For example, at 100 kHz a PulseTrain set to go high for 2 ms would be high for 1.9968 ms, because the sample period is 10.24 us. Because these slight differences are less noticeable on devices using oversampling, such as those using sigma-delta converters, this issue is most noticeable when synchronizing several devices using different types of converters.