Is MBR3 always in SmartSense even though automatic threshold is disabled ?
Another question is that why automatic threshold should be disabled when median filter is used.
Yes MBR3 device operates only in SmartSense mode.
The RAM available in MBR3 devices is limited therefore enabling median filter and auto threshold will cause RAM overflow.
We recommend you to evaluate PSoC 4S devices (4000S , 4100S ,4100S plus) that has latest gen CapSense and is programmable.