Sreedev D S

The MCC USB-1608HS has only one physical trigger input terminal. So when we select the basic digital edge instance of the ULx Basic Trigger VI as shown in the diagram, it automatically takes this physical trigger input terminal as the trigger source. So we don't have to specify the trigger source in the VI. Its working fine now. Thanks...

Hi, Sorry for the delay in reply. LABVIEW version: 2022 Q3 (32 bit), MCC DAQ: USB-1608HS, InstaCal version: 6.73, Windows OS version: Windows 10 pro 22H2. Screen shot of the VI attached. The purpose of the VI is to acquire the data from one of the analog inputs of MCC USB-1608HS device in synchronous with an external TTL trigger input. But there is no option in the ULx Trigger VI to select the trigger source. If I select the composite start Ext TTL or Basic Digital Pattern instances of the ULx Trigger VI, Labview shows that those triggers are not supported by the specified device. Screen shot attached. Please suggest a solution.

Hi, I need to do voltage measurements using MCC DAQ data acquisition board. This board is accessible in Labview through ULx VIs and a number of examples are also there in Labview under the 'Hardware Input Output section'. But I need to acquire data in synchronous with an external TTL input. There is a 'ULx Trigger VI' to synchronize the data acquisition with external TTL input, but this VI has no 'source input' to select the trigger source. A similar VI in Labview named, 'DAQmx start trigger' VI in 'start digital edge' mode has a 'source input' to select the trigger source. This feature is lacking in the 'ULx Trigger VI' and so I am unable to access data synchronously with external TTL input. Please suggest a solution