Getting Started With Ao Applications In Software - National Instruments NI 6711 User Manual

Chapter 3 Analog Output

Getting Started with AO Applications in Software

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