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CDB5490U
Verify that the USB cable is connected properly and that the power supply is on and connected properly
to the CDB5490U. Reset the board (press the RESET button on the board) and try to set up the USB con-
nection again.
After the serial port has been selected, the MCU will read the chip ID from the CS5490. The chip revision
number will be displayed in the Device field in the Start-Up Window. If the red "Unknown CHIP ID" is dis-
played, the user should check the power supply and clock to the CS5490, MODE jumper J15, and the
isolation jumpers J18 and J20, click the RESET button, and go back to the USB connection process.
Figure 14. Unknown Chip ID Error Message
2.5
System Menu
The System pull-down provides three options: Setup CS5490, Calibration, and Conversion. Each window
provides a means to evaluate the different functions and performance of the CS5490 (see Figure 15).
Figure 15. System Pull-down Options
DS923DB5
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