National Instruments PXI Express NI PXIe-1073, User Manual

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PXIe-1073 User Manual
Trigger Configuration in MAX
Each chassis has one or more trigger buses, each with eight lines numbered 0 through 7 that can
be reserved and routed statically or dynamically. Static reservation “pre-allocates” a trigger line
to prevent its configuration by a user program. Dynamic reservation/routing/deallocation is
performed
on the fly within a user program based upon National Instruments APIs such as
NI-DAQmx. Static reservation of trigger lines can be implemented by the user in MAX through
the
Triggers tab. Reserved trigger lines will not be used by PXI modules dynamically
configured by programs such as NI-DAQmx. This prevents the instruments from double-driving
the trigger lines, possibly damaging devices in the chassis. For example, if trigger line 3 is
asserted, by default it will not be automatically asserted by any other module.
Complete the following steps to reserve these trigger lines in MAX.
1.
In the Configuration tree, click the PXI chassis branch you want to configure.
2. Click the Triggers tab at the bottom of the right-hand pane.
3. Select which trigger lines you want to statically reserve, as shown in Figure 2-8.
4. Click the Apply button.
Note
For more information about routing and reserving PXI triggers refer to
KnowledgeBase 3TJDOND8 at
ni.com/support
.
Figure 2-8.
Configuring Triggers in MAX