USB 6210 Measure frequency at a specific sample rate.

[Stewy]

Hi Miaa,

I think the counter looks at the time between the rising or falling edges (depending on settings) and uses an internal 20Mhz clock to calculate frequency.

The 6210 has 2 counters. You could use some external circuitry to multiplex the 10 signals to the 2 counter inputs and program the digital I/O outputs of the 6210 to select between the 10 signals. After the 10 signals have been sampled they could then be displayed on a chart.

This method might be slow maybe 1 second or so (not sure on this) to select and measure the 10 signals I don’t know how fast (or often) you need to sample the frequencies and display them.

This would take some external circuitry.

Stewy

[Miaa]

Sure thanks for the recommendation on using external circuit. I was reading in the attached chapter 9 about the counters and have still not found how you calculated the values in ring constant for edge and measurement method ?

Can you kindly tell me how these values were calculated ?

PS: Attached is also the manual which describes about counters in chapter 9

[Stewy]

Hi Miaa,

I am not sure what those settings are. I have never seen those. I am running LV 8.2.

When I start a project I usually find an example and modify that or use the DAQ assistant.

I am sure someone on here who is more knowledgeable than I can answer that.

Stewy

[saitejchinthala]

Hi..

Here my aim to measure the motor speed in RPM using optical proxmity sensor..here im using Ni-USB 6009.Please help me how to measure it.

Thanks in advance.

[GerdW]

Hi saitej,

please stick with your own thread!