Analog Input >> General Properties >> Advanced >> Data Transfer and Memory >> Compression >> Raw Data Compression Type

Data Type:	int32
Description:	Specifies the type of compression to apply to raw samples returned from the device. Refer to the DAQmx Professional Tools Web site for more information and examples of raw data compression and streaming to disk.

Valid values

DAQmx_Val_None	10230	Do not compress samples.
DAQmx_Val_LosslessPacking	12555	Remove unused bits from samples. No resolution is lost.
DAQmx_Val_LossyLSBRemoval	12556	Remove unused bits from samples. Then, if necessary, remove bits from samples until the samples are the size specified with Compressed Sample Size. This compression type limits resolution to the specified sample size.