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Get current USRP radio time

Since R2023b

    Add-On Required: This feature requires the Communications Toolbox Support Package for USRP Radio add-on.



    getRadioTime(radio) returns the current USRP™ radio time associated with the radio System object™ radio.


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    Create an SDRu receiver System object. Set the pulse per second (PPS) signal source to be the PPS signal from a GPSDO.

    rx = comm.SDRuReceiver(Platform="B210",SerialNum='3136D5F',...

    Get the current USRP radio time.

    GPSLockStatus = 0;
        while ~GPSLockStatus 
            disp("Trying to lock to GPS constellation ...");
            GPSLockStatus =  gpsLockedStatus(rx);
    Trying to lock to GPS constellation ...
    linux; GNU C++ version 10.3.0; Boost_107800; UHD_4.2.0.0-vendor
    ---------- see libuhd version information above this line ----------
    disp("GPS Locked");
    GPS Locked
    rx_data = rx();
    USRP time synchronized to GPS time
    radTime = getRadioTime(rx);
    d = datetime(radTime,'ConvertFrom','posixtime','Format','MM/dd/uuuu HH:mm:ss','TimeZone','Asia/Calcutta');
    fprintf('The current USRP radio time is %s',d)
    The current USRP radio time is 07/27/2023 16:29:31

    Input Arguments

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    USRP radio, specified as a comm.SDRuTransmitter or comm.SDRuReceiver System object. This radio must be connected to the host computer.

    Version History

    Introduced in R2023b

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