Device Timebase

The device timebase is normally used when time correlation with other non-MAXT equipment is not necessary. This timebase is the most accurate (down to 10 ns accuracy).

Example

The example below shows how to set the device timebase mode.

int main()
{
HMXF_SERVER server;
HMXF_DEVICE device;
uint64 timebase, timer;
uint64 count;
uint32 rc;
char *p;

    // Connect to services and initialize environment
    rc = mxfServerConnect("0.0.0.0", "", "", FALSE, &server);

    if (!rc)
      // Initialize the server.
      rc = mxfSystemInit(server);

    if (!rc)
    {
      // Set timebase to 64-bit microseconds
      rc = mxfSystemTimeBaseSet(server, MXF_TIMEBASE_DEVICE_USEC);

      if (!rc)
      {
        rc = mxfSystemTimeBaseGet(server, &timebase);
        switch (timebase)
        {
          case MXF_TIMEBASE_DEVICE_USEC:
                p="MXF_TIMEBASE_DEVICE_USEC";
            break;
          case MXF_TIMEBASE_COMPUTER_USEC:
                p="MXF_TIMEBASE_COMPUTER_USEC";
            break;
          case MXF_TIMEBASE_IRIGB_USEC:
                p="MXF_TIMEBASE_IRIGB_USEC";
            break;
          case MXF_TIMEBASE_DEVICE_NSEC:
                p="MXF_TIMEBASE_DEVICE_NSEC";
            break;
          case MXF_TIMEBASE_COMPUTER_NSEC:
                p="MXF_TIMEBASE_COMPUTER_NSEC";
            break;
          case MXF_TIMEBASE_IRIGB_NSEC:
                p="MXF_TIMEBASE_IRIGB_NSEC";
            break;
        }
        if (!rc)
              printf("Time base was set to '%s'\n", p);
      }
    }

    // Get the device handle.
    rc = mxfSystemDeviceAllGet(server, MXF_DEVICE_ALL, 1, &count, (HMXF_DEVICE*)&device);

    if (!rc)
    {
        rc = mxfDeviceTimerGet(device, &timer);
        printf("Current timer value is %lld %s\n", timer, timebase<=MXF_TIMEBASE_IRIGB_USEC ? "us" : "ns");
    }

    mxfSystemTerminate(server); 
    mxfServerDisconnect(server); 
}