05-09-2014 11:55 AM
Thank AKA_TG and others.
Put the stop button into the while loop is needed to fix but it is not the main issue for my project.
I still can not find the problem and solution for my programs.
Chương trình của tôi là thu nhận real time và liên tục do đó không thể có delay.
Parameter:
Baud rate: 115200
Frequency sampling: 16ksps
05-09-2014 12:34 PM
@ducta9 wrote:
Baud rate: 115200
Frequency sampling: 16ksps
@AH, with 115200 8, none, 1 the max throughput is @11.52k Characters (Bytes) per second. So, even if your DAQ device is only spitting out raw ADC counts from a single chanel 8bit ADC you simply cannot get all the data (Assuming even zero latency due to a USB - rs232 converter or something)
You need either slower data acquisition or a faster data pipeline.
05-12-2014 12:52 PM
Thanks Jeff·Þ·Bohrer.
Currently I was using my hardware, not using NI DAQ. I implement sampling 24bit ADC use Texas Instrumment - ADS1294.
I was transmitted from MSP430 MCU with baud 115200bps to computer through COM Port. I also encountered another problem is that I do not understand why I adding frequency components into the transmit signal to the waveform using the Build Waveform function, signals now have data type is Dynamic Signal, with this data type - Dynamic Signal, LabVIEW can't be plot Real Time to Waveform Chart? I need solution.
Help me, please!
Thanks.
05-12-2014 01:58 PM
You shouldn't have the Dynamic Signal. You need to build the waveforms to be added to the chart.