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ads1299 evaluation module problem

Other Parts Discussed in Thread: ADS1299

Hi. I have order the ads1299 evaluation module and read the EEG Front-End Performance Demonstration Kit(slau443) but the EEG Front-End Performance Demonstration Kit of page  32 (7.1 Reference Signal and Patient Bias Signal) ,  The EVM has two signals (BIAS_ELEC, REF_ELEC) available atthe connector JP81 that correspond to these two electrodes. The BIAS_DRV signal is similar to the BIAS_ELEC, but appears as a separate signal at JP80. In future versions of the EVM, BIAS_DRV will be
multiplexed through a jumper to BIAS_ELEC.  I can not find JP80 and JP81 in ads1299 evaluation module or Page 50-53 .   How can anyone help me.