Cirrus Logic CDB5460AU - Manual (Page 17)

CDB5460AU
DS487DBU1 17
2.6.4 Power Up Button
This button is used to send the Power Up/Halt command to the CS5460A. The part will return to normal
operating mode and halt any conversions that are being done at this time.
2.6.5 Write Data to File
This box provides a means to write the conversion result data to a .txt text file for later analysis or print
out. The file path and name will be shown in Filename field. The Open File button is used to open a new
or existing .txt text file for data writing. Each time the Write Data button is pressed, the result data is written
into the file and the Number of Lines Written field value will be increased by 1.
2.7 Pulse Rate Output Window
The CS5460A features a pulse-rate energy output. The CDB5460AU has the capability to demonstrate
the functionality of this output in the Pulse Rate Output window. See Figure 11. The Pulse Rate Output
window can be accessed by pressing , or by pulling down the Menu menu, and selecting the Pulse
Rate Window item.
Figure 11. Pulse Rate Output Window
2.7.1 Integration Seconds
This field allows the user to select the length of time over which pulses will be collected.
2.7.2 Periods To Average
This field allows the user to average a number of integration periods.
2.7.3 Start Button
When the Start button is pressed, the CDB5460AU will capture pulse rate data according to the values in
the Integration Seconds and Periods to Average fields. After each integration period, the Pulse Count,
Frequency columns will be updated. The Average Frequency and Standard Deviation columns will only
be updated after all the integrations have been collected. The software stops collecting data when the
user presses the Stop button, or when the data collection is finished. Due to speed limitations of the on-
board microcontroller, some higher pulse rates cannot be accurately collected.