National Instruments NI VISION PCI-8254R 用户手册
© National Instruments Corporation
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IEEE 1394 and NI 8254R ..............................................................................................1-3
Functional Overview......................................................................................................1-3
Start Conditions .............................................................................................................1-4
Acquisition Window Control.........................................................................................1-4
Functional Overview......................................................................................................1-3
Start Conditions .............................................................................................................1-4
Acquisition Window Control.........................................................................................1-4
Digital I/O ......................................................................................................................2-1
RIO and The LabVIEW FPGA Module ........................................................................2-1
TTL Inputs and Outputs.................................................................................................2-2
Isolated Inputs and Outputs ...........................................................................................2-3
I/O for Normal Operation ..............................................................................................2-4
RIO and The LabVIEW FPGA Module ........................................................................2-1
TTL Inputs and Outputs.................................................................................................2-2
Isolated Inputs and Outputs ...........................................................................................2-3
I/O for Normal Operation ..............................................................................................2-4
Initiating a Timed Pulse ....................................................................2-5
Pulse Modes ......................................................................................2-6
Pulse Delay .......................................................................................2-6
Pulse Width .......................................................................................2-7
Trigger Polarity .................................................................................2-7
Pulse Modes ......................................................................................2-6
Pulse Delay .......................................................................................2-6
Pulse Width .......................................................................................2-7
Trigger Polarity .................................................................................2-7