Frequency Measurements with PXI-6289

[kayvel]

Hello,

I need to measure frequency of 5 separate devices with the PXI-6289.  On the pinout guide it says " As an input, each PFI terminal can be used to supply an external source for AI, AO, DI, and DO timing signals or counter/timer inputs.", but in the manual it says it only has two counters.  Am I still able to use 5 of the PFI terminals as counters to measure each frequency even though there are only 2 counters?

[Kevin_Price]

Briefly, no.   Not at the same time anyway.

There are many terminals whose signals can be *routed* to the device's counters, but there are only 2 counter modules on the board for doing frequency measurement.

Does your chassis support PXIe?   If so, you might want to consider a dedicated 6612 counter/timer board.  It has 8 counters based on a new design that offers some enhancements over the ones on the 62xx M-series devices.

-Kevin P

[Henrik_Volkers]

Your 5 frequencies are of what frequency range? 

needed update rate?

simultanious measurement needed?

needed freq. resolution?