TI工程师以及大侠们帮我看看我的ads1292R CH2采集到的波形

我的配置如下：

ADS1292_Command(ADS1292_CMD_SDATAC);
ConfigRegs0[0][ADS1292_Configuration_Register1]=0x01; //fMOD/512 250SPS
ConfigRegs0[0][ADS1292_Configuration_Register2]=0xa0; //
/*1 = Reference buffer is enabled 1 = Oscillator clock output enabled 1 = On; amplitude = ±(VREFP – VREFN) / 2400 1 = Square wave at 1 Hz*/
ConfigRegs0[0][ADS1292_LeadOff_Control_Register]=0x10;
ConfigRegs0[0][ADS1292_Channel1_Settings]=0x00;//PGA gain =6; 0000 = Normal electrode input (default) 0101 test signal
ConfigRegs0[0][ADS1292_Channel2_Settings]=0x50;//PGA gain =6; 0000 = Normal electrode input (default)
ConfigRegs0[0][ADS1292_RightLegDriveSenseSelection]=0x00;
ConfigRegs0[0][ADS1292_LeadOff_Sense_Selection]=0x00;
ConfigRegs0[0][ADS1292_LeadOff_Status]=0x00;
ConfigRegs0[0][ADS1292_RespirationControlRegister1]=0x02;
ConfigRegs0[0][ADS1292_RespirationControlRegister2]=0x00;
ConfigRegs0[0][ADS1292_General_PurposeIO_Register]=0x00;

采集到的数据放到excel里面画了个图如下：

仿佛有震荡存在。

我用万用表检测下图中C9两端对地的电压时（PGA2P、PGA2N），电压在0.7V到1V多跳动，请问这是什么原因？

我整个原理图如下：

是工频干扰吗  我试着加一下右腿驱动  

现在 配置成这样了  

ADS1292_Command(ADS1292_CMD_SDATAC);
ConfigRegs0[0][ADS1292_Configuration_Register1]=0x02; //fMOD/512 250SPS
ConfigRegs0[0][ADS1292_Configuration_Register2]=0xE0; //
/*1 = Reference buffer is enabled 1 = Oscillator clock output enabled 1 = On; amplitude = ±(VREFP – VREFN) / 2400 1 = Square wave at 1 Hz*/
ConfigRegs0[0][ADS1292_LeadOff_Control_Register]=0xF0;
ConfigRegs0[0][ADS1292_Channel1_Settings]=0x00;//PGA gain =6; 0000 = Normal electrode input (default) 0101 test signal
ConfigRegs0[0][ADS1292_Channel2_Settings]=0x00;//PGA gain =6; 0000 = Normal electrode input (default)
ConfigRegs0[0][ADS1292_RightLegDriveSenseSelection]=0xEF;//0x0c
ConfigRegs0[0][ADS1292_LeadOff_Sense_Selection]=0x0F;
ConfigRegs0[0][ADS1292_LeadOff_Status]=0x00;
ConfigRegs0[0][ADS1292_RespirationControlRegister1]=0xEA;
ConfigRegs0[0][ADS1292_RespirationControlRegister2]=0x03;
//ConfigRegs0[0][ADS1292_General_PurposeIO_Register]=0x00;

波形好多了

您可以不用交流供电，验证一下是不是工频干扰。

我是电池供电的，但是工频机器谐波都存在