30 |
only be used directly as the sampling clock. The DI timer output signal can be set to the
Conv_OUT pin via software for simultaneous synchronization of multiple devices. See the
"Synchronization System" chapter for details on the external clock.
4.4.
Trigger
The USB-3200 series data acquisition
device
provides rich trigger options. The DI
acquisition trigger options are shown in Figure 4.3.
DiSoftTrig software trigger
GlobalSoftTrig global software trigger
Ext_Trig_IN external trigger iniput
Din_0 edge trigger
Din_1 edge trigger
Din_2 edge trigger
Din_3 edge trigger
DI acquisition trigger
DO acquisition trigger
DI trigger signal
Figure 4.3 DI trigger options
The DI acquisition uses the DiSoftTrig software trigger as the trigger source by default. The DI
acquisition can use other trigger sources via software settings to achieve the synchronization of
each function.
DiSoftTrig software trigger and GlobalSoftTrig global software trigger are software triggers,
which are used to send a command to the acquisition
device
to initiate device triggering.
Ext_Trig_IN external trigger means that when Ext_Trig_IN receives a rising edge, the device
triggers. The AI trigger signal can be set to the Ext_Trig_OUT pin via software for multiple device
synchronization. See the "Synchronization System" chapter for details on the external trigger.
The Din_0 ~ Din_3 edge trigger means that when the DIO is configured as an input, the DIO pin
receives a rising edge and the device triggers.
DI acquisition trigger and DO acquisition trigger can be used to trigger the DI function alongside
their own functions to achieve the synchronization of each function.