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AFE4900EVM: Photo diode is saturated for Green LED

Part Number: AFE4900EVM
Other Parts Discussed in Thread: AFE4900

Hello,

I am using the AFE4900EVM and supplied software. When start capturing using default settings from a finger, only the IR and Red show an HR signal. The green LED signal kept saturated at 1.2V. I was able to have a very weak signal from reducing the Green LED current to 1.564mA. Also, it is observed that the Green LED signal gets saturated even when there is no object in front of the sensor for currents above 1.564mA.Is this a settings related problem or anything else?