Hi Simon,
[quote user="Simon Jagla"]In the graph tool properties (CCS5.5) I can choose a “Sampling rate in Hz”. I thought it would increase the update speed of the values but it does not change anything. What is it good for?[/quote]
As described in the CCS Help:
This field contains the sampling frequency for acquisition buffer samples, such as for analog to digital conversion. The sampling rate is used to calculate the time and frequency values displayed on the graph.
For a time domain graph, this field calculates the values for the time axis. The axis is labeled from 0 to (Display Data Size * 1/Sampling Rate).
For a frequency domain graph (FFT Magnitude, Complex FFT, FFT Magnitude and Phase), this field contains the number of samples (rounded down to the nearest power of 2) used for the FFT frequency analysis. The graph displays the frequency contents of the signal in the range from 0 to Sampling Rate/2
[quote user="Simon Jagla"]Is it possible to draw a graph in realtime with the graph tool. The customer asks about how to draw a graph of a variable that gests updated with 18kHz. I will tell him to buffer the samples in the device and read out the buffer afterwards but I’m also curious if it is possible e.g. with a XDS560 trace emulator to read out single values with this speed and draw it. Is this possible with the graph tool?[/quote]
What device is the customer using?
Thanks
ki