Princeton Instruments NIRvana-LN, User Manual, Page: 92 / 122

92 NIRvana
™
-LN System Manual Issue 4
10.7 Program Error Message Displayed
Figure 10-7 illustrates the dialog that may be displayed when attempting to acquire a test
image, acquire data, or run in focusing mode and the DMA buffer size is too small. A large
array (e.g., a 2048x2048 array,) requires a larger setting than that for a smaller array (e.g., a
512x512 array.)
Figure 10-7: Typical Program Error Dialog
Perform the following procedure to correct the problem:
1. Click on OK .
2. Reboot WinSpec.
3.
Note the array size on the Setup|Hardware|Controller/CCD tab or on the
Acquisition|Experiment Setup|Main
tab
Full Chip
dimensions). If the detector
contains a large array (e.g., a 2048x2048 array,) and the DMA buffer size is too small,
there will not be enough space in memory for the data set.
4.
Open Setup|Environment|Environment dialog.
5. Increase the DMA buffer size to a minimum of 32 MB (64 MB if it is currently 32 MB,
or 128 MB if it is currently 64 MB,) click on
OK , and close WinSpec.
6. Reboot the computer.
7.
Restart WinSpec and begin acquiring data or focusing. If the problem persists, increase
the DMA buffer size again.
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