National Instruments NI 6711 User Manual

Also see for DAQCard-6715: User manual User manual

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National Instruments NI 6711 User Manual Manual pdf 47 page image

Chapter 3 Analog OutputAnalog Output Series User Manual 3-12 ni.comThe maximum allowed frequency for the MasterTimebase is 20 MHz, witha minimum pulse width of 23 ns high or low. There is no minimumfrequency limitation.The two possible sources for the MasterTimebase signal are the internal20MHzTimebase signal or an external signal through RTSI 7. Typically the20MHzTimebase signal is used as the MasterTimebase unless you wishto synchronize multiple devices, in which case, you should use RTSI 7.Refer to Chapter 8, Real-Time System Integration Bus (RTSI), for moreinformation on which signals are available through RTSI.Figure 3-10 shows the timing requirements for MasterTimebase.Figure 3-10. MasterTimebase Timing RequirementsGetting Started with AO Applications in SoftwareYou can use the AO Series device in the following analog outputapplications.• Single-Point Generation• Finite Generation• Continuous Generation• Waveform GenerationYou can perform these generations through programmed I/O, interrupt, orDMA data transfer mechanisms. Some of the applications also use starttriggers and pause triggers.Note For more information about programming analog output applications and triggers insoftware, refer to the NI-DAQmx Help.t p = 50 ns minimumt w = 23 ns minimumt w t wtp