def METHOD_NAME():
    # Test init with unknown active channels and traces
    with expected_protocol(
        AnritsuMS464xB,
        [(":SYST:PORT:COUN?", "3"),
         (":DISP:COUN?", "2"),
         (":CALC1:PAR:COUN?", "8"),
         (":CALC2:PAR:COUN?", "12")],
        active_channels="auto",
        installed_ports="auto",
        traces_per_channel="auto",
    ) as instr:
        assert len(instr.channels) == 2
        assert len(instr.ch_1.ports) == 3
        assert len(instr.ch_1.traces) == 8
        assert len(instr.ch_2.traces) == 12