  We experimentally test the error-disturbance uncertainty relation (EDR) in
generalized, variable strength measurements of superconducting qubits on a NISQ
processor. Making use of sequential weak measurements that keeps the initial
signal state practically unchanged prior to the main measurement, we
demonstrate that the Heisenberg EDR is violated, yet the Ozawa and Branciard
EDRs are valid throughout the range of measurement strengths from no
measurement to projection measurement. Our results verify that universal EDRs
are valid even in a noisy quantum processor and will stimulate research on
measurement-based quantum information and communication protocols using a NISQ
processor.
