Hi, I want to use your product AD5242 (1M). I ordered the samples and do a measurement on breadboard using a multimeter. I measure RAB for both ch1 and ch2. One is 0.8M and the other is 1M. When I exchange the probes in both cases. One is 0.7M and the other one is 0.5M. I am totally confused. Based on data sheet, the mismatch between two channels is 1% and there is no polarity on terminal A B W. I use the same method to measure AD5235, there is no problem.