Noise problem in C5505 ECG

Talha Saleem

hi,

I am doing project of ECG acquiring on C5505. I got results successfully on the PC Application. My ECG results are good and their shape matches those available on the real ECG machines.

But the ECGs are still suffering from some humming noise I want to ask is there a way my PC or near by electronic systems are affecting the waveforms?? Like causing variations or adding white noise to it. And is there a way to eliminate it??

Thanks.

over 14 years ago

0 Wen Li over 14 years ago

TI__Expert 7441 points

Put the unit input a grounded box will reduce the external noise.

Regards

Wen

0 Hawk Tong over 14 years ago in reply to Wen Li

TI__Intellectual 1840 points

^Hi,

^{Pls confirm it is 50Hz disturbance, if so, redesign your right led driver cirucit.}

^{what is the result, if you feed the ECG with a simulator instead of human body ?}

^regards

^Hawk

0 Talha Saleem over 14 years ago in reply to Hawk Tong

Intellectual 455 points

hi,

thanks for the tips but I don't understand one thing that

How would I redesign the RL driver circuit???

And "Put the unit input a grounded box will reduce the external noise".... I dodn't understand it.........Please if you be could me clear me more....

0 Wen Li over 14 years ago in reply to Talha Saleem

TI__Expert 7441 points

Normally, this type of electronic equipment should be in a metal chassis, the Chassis should be ground.

in your case, just for the testing purpose first, put the circuit board into a ground box.

Regards

Wen

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Noise problem in C5505 ECG