automated simulation system

Please specify the frequency range of interest, the voltage range of interest. Also, it would help to know the application for the circuits of interest (radios, cell phones, audio, computer,????).

actually the cards are related to a complete system. this system comprises of different sensors . the cards are conditionaling these signals and transforming them to digital signals then sending them to DSPs to communicate with PCs.

i wish to simulate all the important signals from each card before these are implemented in finallized system so that any discerpency during finallized testing could be easily identified.

i wish a simulation setup, where i could apply different sorts of noise as well so that i can check and observe outputs corresponding to noise, this could help me in final testing

You will need an arbitrary waveform generator to simulate the sensor signals. SInce you did not specify the frequency range or voltage range, I can only suggest which generator to use. Take a look at the specs for the Tektronix AFG3000 series:

http://www2.tek.com/cmswpt/psdetails.lotr?ct=PS&ci=13567&cs=psu&lc=EN

The AFG3012B will probably do the job. If you have a Tek scope, you can capture analog waveforms and reproduce them with the AFG. If the analog waves are not available, you can create them with software downloaded from tek.com.

the signals will be generated by the sensors. the cards are only conditioning and digitizing and interfacing these signals to DSPs.

what i wish is to observe the response at different points automatically.

since there are no. of test points which i need to visuallize simultaneously, thats why i was of the opinion to interface all these signals to the pc using daq cards and design a gui based setup within labview where i could visuallize all whats happeneing and could add noise to the signal from different labview blocks and could see how would the response deteriorate in case of noise interference!

how wud u comment that?

or any suggestion or crrection?

I think National Instrument's acquisition cards and LabView Signal Express software could do what you are describing. Signal Express allows you to define multiple windows to plot several low frequency signals in real time.

Visit their web site and see demo videos at:

http://zone.ni.com/wv/app/doc/p/id/wv-533/nextonly/y