Trigger Configuration - Keysight M9005A User Manual

Getting Started With The System Installation and Configuration
The PXI specification allows for 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. PXI Express
devices must provide a driver and .ini file for identification. The minimum
documentation requirements for PXI-1 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 a PXI-1 chassis is contained in a chassis.ini file
provided by the chassis manufacturer. The information in this file is combined
with information about the system controller to create a single PXI-1 system
initialization file called pxisys.ini (PXI System Initialization). The system controller
uses Keysight IO Libraries to generate the pxisys.ini file from the chassis.ini file.
Device drivers and other utility software read the pxiesys.ini and pxisys.ini file to
obtain system information. For detailed information about initialization files, refer
to the PXI specification at www.pxisa.org.

Trigger Configuration

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 Keysight APIs. Static reservation of trigger
lines can be implemented by Keysight Connection Expert through the
PXI/AXIe Chassis > Triggers tab. Reserved trigger lines will not be used by
PXI modules dynamically configured by programs. 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.
Keysight M9005A PXIe Chassis User Guide 29