DAQ-STC: Counting Events Using Intermediate-Level VIs

This VI counts the number of TTL rising edges on the "Source" pin of the chosen counter. This VI works with devices that have a DAQ-STC counter/timer chip. Examples of these devices are the PXI-6070, PCI-MIO-16E-1, and AT-MIO-16E-2.

INSTRUCTIONS
1. Enter the device number of your board.
2. Enter the counter number.
3. Make the appropriate I/O connections as explained below.
4. Run the VI.

KEY PARAMETERS
This VI uses intermediate-level VIs to count TTL rising edges. On the diagram, the Event or Time Counter Config.vi configures the counter to count continuously. Counter Start.vi then initiates the counter. Inside the while loop, Counter Read.vi is continually called to get the current count. The small loop delay is used to free up processor time of your computer. Pressing the STOP button ends the while loop, and the Counter Stop.vi resets the counter.

I/O CONNECTIONS
Connect your TTL signal to be counted to the SOURCE pin of the chosen counter.
If you chose a gate mode other than ungated, wire your gate signal to the GATE input of the chosen counter.
To find the actual pin numbers, refer to the hardware user manual.

DAQ VIS USED
Event or Time Counter Config.vi
Counter Start.vi
Counter Stop.vi.

Requirements

Filename: count_events-int__daq-stc_.zip

Software Requirements

Application Software: LabVIEW Full Development System 5.0.1
Language(s): LabVIEW

Hardware Requirements

Hardware Group: Multifunction DAQ (MIO)
Driver: Traditional NI-DAQ (Legacy)

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