Hello,
Using ADS1298R, I have a question of the noise in the ECG signal.
In the schema, I met RA at IN2N and IN3N, LA at IN2P, LL at IN3P.
Electrode RA, LA and RL are connected to the ECG simulator and LL is vacant.
The register map is shown below (LL is not considered):
| 00h | D2 |
| 01h | 04 |
| 02h | 02 |
| 03h | 4E |
| 04h | 03 |
| 05h | 80 |
| 06h | 00 |
| 07h | 80 |
| 08h | 80 |
| 09h | 80 |
| 0Ah | 80 |
| 0Bh | 80 |
| 0Ch | 80 |
| 0Dh | 02 |
| 0Eh | 02 |
| 0Fh | 02 |
| 10h | 02 |
| 11h | 00 |
| 12h | 00 |
| 13h | 00 |
| 14h | 00 |
| 15h | 00 |
| 16h | 30 |
| 17h | 22 |
| 18h | 0B |
| 19h | 54 |
The strange thing is that when I touch electrode LL, there is noise in the signal Lead I (LA - RA). (But I have deactivated the LL in the register map)
In my configuration, I power on just for Lead I (CH2SET). The others are all power down.
And I set only RLD2P and RLD2N as the input of the RLD.
Please help me to find the problem.
Thanks a lot
.
