PWM signal conditionning

[fourmi]

Hello
I have a PWM signal, amplitude 0-12V, frequency up to 10 kHz, which I would like to acquire using a PCI7030/6040E board. The 6040E takes only +/-10V inputs, so i am searching a conditionning module which would reduce my voltage to 0-10V. I have thought to a 5B41 module but it has a 10kHz bandwith. Will that work anyway ? If not, which other conditionning module could work ?
Thanks a lot.

[PdB]

I have an electronic back-ground so I would just take/solder together two resistors to build an easy voltage dividing circuit to reduce the amplitude of the signal.
An R and 5xR ohm valued resistor should work.
Keep in mind that the total impedance of the dividing circuit (6R Ohm) does not load your signal-source.

Good luck, Patrick de Boevere

[aasenjo]

I agree with Patrick:

For a simple, one channel application, the easiest thing to do is just create a voltage divider in your Terminal Block.

If you are looking for a higher channel or more professional setup then you might want to take a look at our SCC-A10 modules. You would put them in a SC-2345 Signal Conditioning box and the setup is compatible with your board.

This will offer a 10:1 attenuation for which you can compensate automatically in software by using Virtual Channels (where Virtual Channels apply), or in your application.

I hope this helps.

Alejandro Asenjo
Applications Engineer
National Instruments

[fourmi]

Thanks for your answer.
Concerning the 5B41, will the bandwidth of 10 kHz affect my PWM signal ? I think that it will not, because I think that the bandwidth meens that the 5B41 is designed to work well between 0 and 10 kHz and that the cut-off frequency is above 10 kHz, but I need to be sure of that.

Actually I have a few other 5B41 conditioning modules (for conditioning analog signals for example) in a 5B01 backplane so it would help me if i could use a 5B module for my PWM signal too !