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AFE4490 SpO2 EVM can NOT work with fluke index2?

Other Parts Discussed in Thread: AFE4490

Hello,

 The TI AFE4490 SpO2 EVM can not work with fluke index2 SpO2 simulator. The LED1 (IR) is ok,  the LED2 ( RED) is noise.

 The SpO2 sensor is nellcor DS-100A.

The AFE 4490 settings are factory default.

The fluke index2 settings: (make sensor as nellcor, pulse AMP 3%.)

But then I done the two others tests:

1, My finger: It's ok for IR and RED;see the flowing;

2,Fluke another simulator "Prosim SPOT" : it's ok for IR and RED;see the flowing;