Hello, I recently received new units of the 34970A and 34901A. I am running self checks as a receiving inspection. The 34970A units pass, but when I insert the 34901A modules into the 34970A units and re-run the self-test, a message pops up after the pass indication,"MUX OPEN channel 101". Is this a normal indication? Is this the proper way to check the 34901A modules?