TLDR: I'm getting lag/delay between the measurement and the live display.
Equipment and worksheet:
- Cheap laptop with Ryzen 7 processor
- MCC DAQ board (USB-1408FS) monitoring 2 draw wire sensors. Connected to the laptop by USB. 1408 is "connected" to DASYLab using InstaCal software.
- SSI meter (Transducer Techniques SSI) monitoring 1 load cell. Connected to the laptop by USB. FTDI driver takes the USB data and simulates a COM port. DASYLab reads the simulated COM port.
- The worksheet does some calculations and writes to a data file.
- Time base in DASYLab is set to 60Hz
- DAQ board set to use DASYLab timebase
- SSI meter set internally to 60Hz
- DASYLab shows a few digital meters and one chart
Everything seems to work fine except for occasional lag. Sometimes the live display keeps up, but sometimes it lags behind real time. When it does lag it seems to get more and more behind. Once, after running for 15 minutes, the display was 2 minutes behind real time. I've tried simplifying the amount of calculations and reducing the amount of data written, but the problem still comes and goes making it hard to troubleshoot.
I have attached the DSB file.
Any suggestions?
Thanks!
