Hello,
I work with LabView 6.i, with a DAQ-device type PCI 6040E and a block-connector type SC-2345. I have the following problems: First one, I want to synchronise an acquisition AI (1000 Hz, 16 channels) with a timer generation (Counter 1), and second one, I want to acquire (Counter 0) synchronously like a NI-TIO-based device.
I want to know every millisecond the number of pulses I get at the source pin of Counter 0, so I use the Counter 1 to generate a 1000 Hz square signal which I put at the gate pin of the Counter 0 and then I count the number of impulses I get at the source pin of the Counter 0. Moreover, this countering must be synchronised with my acquisition.
1) To solve my synchronisation problem, I looked at examples in the help of LabView like the Simul AIAO BufTrig(E-series) and tried to do the same as shown but I am not sure whether I have to wire “hardwarely” the PFI0-line with any signal or if it is done internally. Where can I find information about hardware-wiring of trigger signals ?
2) To solve my synchronous countering, I also looked at examples in the help of LabView and I read in the description of the VI Counter Set Attribute that it is not possible to count synchronously with my DAQ-device, it is only possible with NI-TIO-based devices. I want to know how many impulses I get every second at the source pin of the Counter 0. If I select for the task type of the VI Group Config the task Buffered Event Counting, it sums the number of impulses and it is not what I want, and if I select for the task type of the VI Group Config the task Buffered Period Measurement, it counts the number of impulses I get every millisecond but if I do not get any impulse during a millisecond, it takes automatically the previously impulse number and it is also not what I want. I want to know the number of impulses I get every second but also if I do not get any impulse, it should give me the number zero !
Answer accepted in French, German or English. Thanks for your help.
Riri
