Cirrus Logic CDB5461AU - Manual (Page 20)

CDB5461AU
20 DS661DB1
2.8.3 Collect Button
This button will collect data from the CS5461A device to be analyzed in the plot area. See the section on Collecting
Data Sets for more information.
2.8.4 Output Button
This button will bring up a window in which the user can output the data to a file for later use, print out a plot, or print
out the entire screen. When saving data, only the data channel being displayed on the plot will be saved to a file.
2.8.5 Zoom Button
This button allows the user to zoom in on the plot by selecting two points in the plot area. Press the Restore button
to return to the normal data plot, or press the Zoom button again to zoom in even further.
2.8.6 Channel Select Button
After data collection, Current and Voltage channel select buttons will appear below the graph, allowing the user to
choose the appropriate channel for display. In the Time Domain mode, an additional Overlay button will be present,
to allow the user to display all the channels on the same plot.
2.8.7 Config Window
The Config window allows the user to set up the data collection and analysis parameters.
2.8.7.1 Number of Samples
This field allows the user to select the number of samples to collect – between 16 and 32768.
2.8.7.2 Average
When doing FFT processing, this field will determine the number of FFTs to average. FFTs will be collected and
averaged when the Collect button is pressed.
2.8.7.3 FFT Window
This field allows the user to select the type of windowing algorithm for FFT processing. Windowing algorithms in-
clude the Blackman, Blackman-Harris, Hanning, 5-term Hodie, and 7-term Hodie. The 5-term Hodie and 7-term Hod-
ie are windowing algorithms developed at Crystal Semiconductor.
2.8.7.4 Histogram Bin Width
This field allows for a variable bin width when plotting histograms of the collected data. Each vertical bar in the his-
togram plot will contain the number of output codes contained in this field. Increasing this number allows the user to
view histograms with larger input ranges.
2.8.7.5 Data to Collect
These 3 check boxes allow the user to select the data types that will be collected and returned to the PC for pro-
cessing.