IviDigitizerTimeInterleavedChannels Extension Group
The IviDigitizerTimeInterleavedChannels extension group supports digitizers with the ability to combine two or more channels to achieve higher sample rates and/or greater memory depth. This is accomplished by routing the signal from a single physical input connector to multiple analog-to-digital converters, with each ADC’s sample clock offset from the others.
Some multichannel digitizers interleave their channels by combining the A/D converter and/or memory from several channels; you can use interleaving to multiply the maximum sampling rate when you do not need all input channels be active. The number of channels available for signal acquisition is correspondingly reduced.
Digitizers usually support interleaving of two or four channels. Combining two channels doubles the maximum sampling rate and/or the maximum number of samples that can be acquired on one single input channel. The active channel may or may not be user selectable. For digitizers featuring segmentable memory (multiple records/segments per acquisition), the maximum number of records may or may not increase when combining channels.
Ensure that you carefully specify the sample rate when combining channels. Because sample rate is defined separately, combining channels does not automatically change the sample rate – it changes only the maximum available sample rate.
IviDigitizerTimeInterleavedChannels VIs
IviDigitizer Configure Time Interleaved Channel List