File with bad data in some parts of the file
ECG Logger is a complete Holter system incl. device and firmware.
Brought to you by:
adnovea
Menu
▾
▴
Hello, I have get sometimes in the files recorded in holter mode and dowloaded by the viewer bad data, the files is ok until a time when the data is not good.
The batery voltage is ok, the leads ar ok, and the led of the holter is blinking slow all time, as normal data recording mode.
I see when the file is downloading by the Ecg viewer Pc sw, the dowloading progress bar is ok until a moment when stops several seconds, and after that continue decoding and at th end Ok message is show.
I attach a picture of the bad data ecorded, the file has 5 hours but only th first 1:30 hour is ok.
Very strange.
Could you check the maximum writing time in the log file on the SD card.
May be the SD is too slow .
did you ever resolve this?
I want to build this. What size breadboard did you use?
Clearly the signal goes to zero randomly.
As far as I know, this problem has not been reported by other users.
Therefore this could be due to a poor connection between the Cardio breadboard and the Arduino ADC.
Also check if the AD8232 shutdown signal is HIGH (3V3) in normal operation (if not, adjust the resistors).
This is probably not due to a lead disconnection because the ECG signal is stable neither due to a problem with the SDC because the pause does not match a block of 512 bytes.
Hope this can help solving the problem.