14 Keysight M9036A PXIe Embedded Controller User Guide
Introduction M9036A Functional Description
Trigger Source:
Software Generated
Trigger Destination:
One of the eight PXI backplane trigger lines and
the front panel SMB trigger connector
IVI Driver Syntax (C#):
TriggerRouting.SetRoute (
_AgM9036TriggerRouteEnum.AgM9036TriggerRouteSoftwareToTriggerBusAndExternal,
_AgM9036PxiTrigEnum.AgM9036PxiTrig[0:7]
)
To set the software trigger level use the property:
____TriggerRouting.SoftwareRouteTriggerState
For example, to create a negative-going edge ( ):
TriggerRouting.SoftwareRouteTriggerState = true;
TriggerRouting.SetRoute (
_AgM9036TriggerRouteEnum.AgM9036TriggerRouteSoftwareToTriggerBusAndExternal,
_AgM9036PxiTrigEnum.AgM9036PxiTrig[0:7]
);
TriggerRouting.SoftwareRouteTriggerState = false;
Notes:
• A “software trigger” does not generate a trigger pulse. The SoftwareRouteTriggerState property in the IVI driver
defines a voltage level: True = 3.3V (asserted) and False = 0.0V (not asserted). To generate a pulse, you must toggle
the state of the
SoftwareRouteTriggerState property; that is, set the property to one state, wait for the desired
length of pulse, and then set the property to the opposite state.
• You must select one of the eight PXI backplane trigger bus lines (TTL TRIG[0:7]). The software-generated trigger
signal will be active on the selected backplane trigger bus line and thus available to any PXI module installed in the
chassis. You cannot select only the front panel SMB trigger connector as a trigger destination without selecting one of
the PXI backplane trigger bus lines.
• TriggerRouting.Enabled returns “true” if and only if the trigger routing subsystem is enabled.
• Use TriggerRouting.RouteConfiguration to determine the current routing configuration.
• TriggerRouting.ResetRoute opens all trigger routing paths and disables the trigger routing subsystem. ResetRoute
does not alter the state of the SoftwareRouteTriggerState property. However, the Reset method of the IVI driver
resets the state to the power-on default of True (3.3V).
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