error message: "Undefined function 'disableChannel' for input arguments of type 'char'."

I finally have been getting the oscilloscope feature working in the instrument toolbox. I am running a Tek MDO3104 and am able to manipulate some parameters:

>> get(myScope)

    AcquisitionStartDelay = 0
    AcquisitionTime = 1.000000e-02
    ChannelNames = CH1, CH2, CH3, CH4, MATH, REF1, REF2, REF3, REF4
    ChannelsEnabled = CH1, CH2, CH3
    Driver = tektronix
    DriverDetectionMode = auto
    Resource = TCPIP0::10.20.31.58::inst0::INSTR
    SingleSweepMode = off
    Status = open
    Timeout = 10
    TriggerMode = auto
    TriggerLevel = 4.000000e-02
    TriggerSlope = rising
    TriggerSource = CH1
    WaveformLength = 1000

>> myScope.ChannelsEnabled

ans =

    'CH1'    'CH2'    'CH3'

>> disableChannel('CH1') Undefined function 'disableChannel' for input arguments of type 'char'.

Any insight as to why that fails and what I can do about it?

thank you

Answer 1

[Sangeetha Jayaprakash]

From my understanding, it seems like you are using the Quick-control oscilloscope object, and are able to connect to the oscilloscope.

I assume that you have looked into the pre-requisites to use the Quick-control oscilloscope in this link: http://www.mathworks.com/help/instrument/using-quick-control-oscilloscope.html#bs6b15j

To disable the channels, use one of the following syntax:

1. Pass the 'myScope' object as an argument:

>> disableChannel(myScope, {'CH1', 'CH2'});

or

2. use the dot notation:

>> myScope.disableChannel({'CH1', 'CH2'});

[MarkSheffield]

OK, thank you - both of these methods work. I somehow missed including the object in both cases.