Measurement Computing DASYLab User Manual - Manual (Page 73)

DASYLab
© National Instruments Ireland Resources Limited | B-3
Only 16 branches on a data channel?
I need to use a channel more than 16 times. How can I create more than 16
branches?
Use a mathematics module with the NOP function (No Operation). Connect
one of the data channel branches to this module and use the outputs for 16
more branches.
The display is too slow!
My worksheet takes too long to display the acquired data in the display
windows. What can cause that?
The following factors can slow down the display considerably:
•
Your block size is too big for the sampling rate.
• You configured a separate module in such a way that it ignores a large
number of blocks. You will not see a response until the next data block
passes. The time behavior is the same in block-wise and sample-wise
separation.
• The average module is configured to average blockwise and you did not
change the output block size to reflect the data reduction. The output
blocksize also affects a consecutive separate module that executes a
data-reduction blockwise.
• You have specified a very high value for No. of blocks in the
modules Histogram or Statistical Values. The module needs a long
time to output the data.
• If the hardware is incorrectly configured, data may not displayed
because the hardware is not acquiring data. Check the hardware settings,
especially the board type, the base address, the IRQ channel, and
possibly the DMA channel.