waveshareteam / High-Precision-AD-DA-Board

42 stars 33 forks source link

ADS1256 sample value error #9

Open hustlong opened 3 years ago

hustlong commented 3 years ago

I use ads1256 bcm python3 on rasperry4b, with 15000SPS and read data continuous mode. 使用树莓派4b python3 bcm模式, 15k采样率,连续读模式。

there appear some error voltage value sometimes. 经常会出现一些毛刺错误结果。 微信截图_20201219163657

微信截图_20201219163853

so,what is the reason? it is because the board or my program? 所以,到底是什么原因呢,是电路板自身的原因,还是我的程序有问题?

hustlong commented 3 years ago

微信截图_20201219164023

astrocyte-medical commented 3 years ago

These spikes indicate an incorrect value of the MSB, so they can be due to incorrect t6 and/or t11 delay (see ADS1256 datasheet).