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AFE4900EVM: GUI acquisition tab, channel 4 (Ambient1) not capable of showing any signal

Alexander Kortenbreer
Prodigy 10 points
Part Number: AFE4900EVM
Other Parts Discussed in Thread: AFE4900

Hello,

I am trying to use the EVM GUI to get signals from 4 LEDs. The fourth LED is illuminating, but the display of the Ambient1 channel seems to show an ambient signal around zero. Enable_PTT is disabled. Even if the photodiode is saturated it shows a flat line at zero. The other 3 channels, LED1, LED2 and Ambient2 (LED3) show expected values. Can you help me to acquire data from the fourth LED?

Best Regards,

Alexander Kortenbreer