Chapter 2
Installation and Configuration
2-14
ni.com
in Figure 2-5. This tab allows the routing of triggers from any single trigger
bus to all of the other trigger buses in the chassis.
Note
Selecting any non-disabled routing automatically reserves the line in all trigger
buses being routed to. If you are using NI-DAQmx, it will reserve and route trigger lines
for you, so you won’t have to route trigger lines manually.
Complete the following steps to configure trigger routings in MAX.
1.
In the
Configuration
tree, select the chassis in which you want to
route trigger lines.
2.
In the right-hand pane, select the
Trigger Routing
tab near the bottom.
3.
For each trigger line, select
Route Right
,
Route Outward From
Middle
, or
Route Left
to route triggers on that line in the described
direction, or select
Disabled
for the default behavior with no manual
routing.
4.
Click the
Apply
button.
Using System Configuration and Initialization Files
The PXI specification allows many combinations of PXI chassis and
system modules. To assist system integrators, the manufacturers of PXI
chassis and system modules must document the capabilities of their
products. The minimum documentation requirements are contained in
.ini
files, which consist of ASCII text. System integrators, configuration
utilities, and device drivers can use these
.ini
files.
The capability documentation for the PXI-1044 chassis is contained in the
chassis.ini
file on the software media that comes with the chassis. The
information in this file is combined with information about the system
controller to create a single system initialization file called
pxisys.ini
(PXI System Initialization). The system controller manufacturer either
provides a
pxisys.ini
file for the particular chassis model that contains
the system controller or provides a utility that can read an arbitrary
chassis.ini
file and generate the corresponding
pxisys.ini
file.
System controllers from National Instruments use MAX to generate the
pxisys.ini
file from the
chassis.ini
file.
Device drivers and other utility software read the
pxisys.ini
file to
obtain system information. Device drivers should have no need to directly
read the
chassis.ini
file. For detailed information regarding
initialization files, refer to the PXI specification at
www.pxisa.org
.
