Dear ReaderI tried to Synchronize the Starting of the output of two NI cards using the RTSI bus.I wrote the following code - but the slave-device doesn't start.Could anyone please tell me what's maybe missing?Pascal//PCIe 6259 (Dev1): AO master, export StartTrigger to RTSI0 error = DAQmxCreateTask("",&ao6259TaskHandle); error = DAQmxCreateAOVoltageChan(ao6259TaskHandle, "Dev1/ao0", "", -5.0, 5.0, DAQmx_Val_Volts, ""); error = DAQmxCfgSampClkTiming(ao6259TaskHandle, "OnboardClock", 1000.0, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, 10000); error = DAQmxExportSignal(ao6259TaskHandle, DAQmx_Val_StartTrigger, "RTSI0"); error = DAQmxWriteRaw(ao6259TaskHandle, 10000, false, 10.0, dataBuffer, NULL, NULL);//PCI 6733 (Dev2): Slave device (only triggered) error = DAQmxCreateTask("", &ao6733TaskHandle); error = DAQmxCreateAOVoltageChan(ao6733TaskHandle, "Dev2/ao0", "", -5.0, 5.0, DAQmx_Val_Volts, ""); error = DAQmxCfgSampClkTiming(ao6733TaskHandle, "OnboardClock", 1000.0, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, 10000); error = DAQmxCfgDigEdgeStartTrig(ao6733TaskHandle, "RTSI0", DAQmx_Val_Rising); error = DAQmxWriteRaw(ao6733TaskHandle, 10000, false, 10.0, dataBuffer, NULL, NULL); error = DAQmxStartTask(ao6259TaskHandle);

Measurement Studio for VC++

Hi Pascal,

that's great to hear. That was a real tough one, difficult to debug 😉

If you have any further queueries, don't hesitate to contact NI directly through Web-Support or by phone, as this generally faster.

Regards, C.L.

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