Maximum Record Length for National Instruments Digitizers

Updated May 18, 2018

Reported In

Hardware

  • PXI-5122
  • PXI-5105
  • PXI-5114
  • PXI-5124
  • PXI-5142
  • PXI-5152
  • PXIe-5164
  • PXIe-5160

Software

  • LabVIEW

Driver

  • NI-SCOPE

Issue Details

Why do I get an Error -1074118653 like below figure 1 when I try to specify a large number in the Record Length field?
 

Figure 1. Error -1074118653

Solution

This error depends on which memory option that you have for your digitizer.  The maximum number that you fill out in this field is the maximum number of samples which will fit on the onboard memory of your digitizer.

For example, if you have an 8-bit digitizer with 64 MB per channel memory, the maximum number that you can enter in the Record Length field is 67108624.

Since it is an 8-bit digitizer, each sample is equal to 1 byte of data. This means that 67108624 samples would represent 67108624 bytes or 63.997 megabytes.  The remaining memory (64MB - 63.997MB) is used for storing information about the record.

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