signal conditioning with scb68

[rookie_pankaj]

Hi

I am using SCB 68 board with PXI DAQ 6251 to measure voltage from a sensor. but the magnitude of voltage output is much more than expected. Is SCB68 do some in built signal processing. and can anyone provide me the circuit diagram of the SCB68 for analog input(Voltage).

Thanks

Pankaj Aggarwal
IIT Kanpur

[AnalogKid2DigitalMan]

As shipped, the SCB-68 typically does not include any components in line with the analog inputs.

See page 5-18 as how to add components to attenuate your input signal in this document:

http://www.ni.com/pdf/manuals/320745b.pdf

It may be wise to read the entire document to make sure you have all the switches set up correctly for your application.

[JanoschB]

It deals with the Document 320745b.pdf for SCB-68. I suggest NI to check and correction the Figures, particularly with regard to Lowpass RC Filter. In some Figures R and C are simply interchanged. Figure 5-11, 5-12, 5-13 are definetly false.

[Ima U]

Hi JanoschB,

Thank you for pointing this out.  I will go thru these figures and make sure that any errors that exist are corrected.