Device And Rtsi Clocks - National Instruments NI 6711 User Manual

Note In NI-DAQmx, some additional timing signals not shown in the figures can be
routed to RTSI indirectly. Click the Device Routes tab in Measurement & Automation
Explorer for more information.

Device and RTSI Clocks

© National Instruments Corporation
Figure 8-2 shows the PXI RTSI bus signal connection.
PXI Star 6
PXI Trigger
<0..5>
6
PXI Trigger 7
Figure 8-2. PXI RTSI Bus Signal Connection
Refer to the Timing Signal Routing
for a description of the signals shown in Figure 8-1 and Figure 8-2.
Many AO Series device functions require a frequency timebase to
generate the necessary timing signals for controlling DAC updates or
general-purpose signals at the I/O connector. This timebase is also called
the Master Timebase or Onboard Clock. For more information, refer to the
Master Timebase Signal
The AO Series device can use either its internal 20MHzTimebase signal or
a timebase received over the RTSI bus. The timebase can only be routed to
or received from RTSI 7, or the RTSI clock. The device uses this clock
source, whether local or from the RTSI bus, as the primary frequency
Chapter 8 Real-Time System Integration Bus (RTSI)
Switch
section of Chapter 7,
section of Chapter 3,
8-3
DAQ-STC
ao/SampleClock
ao/StartTrigger
ao/PauseTrigger
Ctr0 Source
Ctr0Gate
Ctr0InternalOutput
Ctr0Out
ao/SampleClockTimebase
Ctr1Source
Ctr1Gate
20MHzTimebase
MasterTimebase
Digital Routing,
Analog Output.
Analog Output Series User Manual