Why Does My VI Logger Task Not Display My Data in Realtime? Primary Software: Other NI Software>>VI LoggerPrimary Software Version: 2.0 Primary Software Fixed Version: N/A Secondary Software: N/A
Problem: I am using VI Logger 2.0 Lite and set up a DAQmx task with 100Hz and 1000 samples with Acquisition Mode set to "Finite". My VI Logger tasks waits until the acquisition is completed to display the data. How can I view the data in real-time? Solution: For VI Logger to display the data during an acquisition, you must set the Acquisition Mode in the DAQmx Task Properties window to be Continuous. Also, with Acquisition Mode set to "Continuous" Real Time Data tab will update its display every N samples where N is the number of samples in the DAQmx Task Properties window. So if you have the sampling rate set to 100Hz and 1000 samples, then it will only update every 10 seconds. To update more frequently, set the number of samples to a smaller number like 1 or 10. (Traditional DAQ VI Logger Tasks) For Traditional DAQ VI Logger Tasks, there is a "Buffer Settings" section that allows you to set the "Number of scans to read at a time" so you can refresh the display every N samples even during a Finite Acquisition. Note: In order to use Traditional DAQ in VI Logger you must upgrade to VI Logger Full Version Related Links: Can VI Logger use Traditional NI-DAQ Channels and NI-DAQmx Tasks simultaneously? VI Logger Lite vs. VI Logger Full Attachments:
Report Date: 10/21/2005 Last Updated: 02/02/2006 Document ID: 3QKA2QTJ |
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