hi:
I have tree questions:
1.
the datasheet paga 63(Figure 59. Lead-Off Detection) , How do I set the register to Red circle?
2. How do setup the register for AC Lead-Off Detection(Figure 59)
#define ADS1298_AD1_REG_ID 0x92//Address:0x00h :ID:Device ID Reg. (Read Only) 1
#define ADS1298_AD1_REG_CONFIG1 0x82//Address:0x01h :CONFIG1: Configuration Register 1 1
#define ADS1298_AD1_REG_CONFIG2 0x10//Address:0x02h :CONFIG2: Configuration Register 2 1
#define ADS1298_AD1_REG_CONFIG3 0xDF//Address:0x03h :CONFIG3: Configuration Register 3 1
#define ADS1298_AD1_REG_LOFF 0x01//Address:0x04h :LOFF: Lead-Off Control Register 1
#define ADS1298_AD1_REG_CH1SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x05h :CH1SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH2SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x06h :CH2SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH3SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x07h :CH3SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH4SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x08h :CH4SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH5SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x09h :CH5SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH6SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x0Ah :CH6SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH7SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x0Bh :CH7SET: Individual Channel Settings
#define ADS1298_AD1_REG_CH8SET 0x05//;for Normal Input Gain 12//0x05;//Address:0x0Ch :CH8SET: Individual Channel Settings
#define ADS1298_AD1_REG_RLD_SENSP 0x00//;//Address:0x0Dh :RLD_SENSP
#define ADS1298_AD1_REG_RLD_SENSN 0x00//;//Address:0x0Eh :RLD_SENSN
#define ADS1298_AD1_REG_LOFF_SENSP 0xFF//Address:0x0Fh :LOFF_SENSP
#define ADS1298_AD1_REG_LOFF_SENSN 0xFF//Address:0x10h :LOFF_SENSN
#define ADS1298_AD1_REG_LOFF_FLIP 0x00//Address:0x11h :LOFF_FLIP
#define ADS1298_AD1_REG_LOFF_STATP 0x00//Address:0x12h :LOFF_STATP (Read-Only Register) 1
#define ADS1298_AD1_REG_LOFF_STATN 0x00//Address:0x13h :LOFF_STATN (Read-Only Register) 1
#define ADS1298_AD1_REG_GPIO 0x00//Address:0x14h :GPIO: General-Purpose I/O Register
#define ADS1298_AD1_REG_PACE 0x00//Address:0x15h :PACE: PACE Detect Register
#define ADS1298_AD1_REG_RESP 0x00//Address:0x16h :RESP: Respiration Control Register
#define ADS1298_AD1_REG_CONFIG4 0x02//Address:0x17h :CONFIG4: Configuration Register
#define ADS1298_AD1_REG_WCT1 0x09//0x08;//Address:0x18h :WCT1: Wilson Central Terminal and Augmented Lead Control Register
#define ADS1298_AD1_REG_WCT2 0xDD//0xCA;//Address:0x19h :WCT2: Wilson Central Terminal Control Register
The register setup is ok?
3.
I can desing the ads1298 Register function to Impedance Meter desing?
Example product : MODEL 1089 MK III CHECKTRODE®
Various readings indicate the following:
5 K or less – excellent skin prep: proceed
with recording and expect good results.
5 – 10 K -- good skin prep, but expect
some noise in the recording.
10 – 30 K -- fair skin prep. Contact
impedance may decrease with time, but for
best recording quality, electrodes should be
removed and skin re-prepped.
Above 30 K -- bad skin prep. Even slight
patient motion will cause. Electrodes must
be removed and skin re-prepped.
