I need inject a 150µV RMS / 150Hz sinusoidal signal to the input for One Audio Conversion and I need to measure the Out from other side from

[Raikar]

Dear All

I new to LabVIEW.I need inject a test is to inject a 150uV RMS / 150Hz to 2000uV sinusoidal signal to input for One Audio Conversion and I need to measure the Out from other side from,please help me to find the Suitable DAQ for my application or other Instruments which suits my appliaction,publish if any Examples 

[johnsold]

Raikar,

First, what is One Audio Conversion? I have never heard of that and a quick Google search did not return anything with that exact name.

For microvolt signals it is often best to generate the signals at the hundreds of millivolt to volt level and then attenuate to microvolts.  Most general purpose DAQ devices will not generate a good sinusoid that small.

Since you do not describe the output you want to measure, no one can offer suggestions on how to do the measurement.

Lynn

[Raikar]

sorry Lynn

I have one PCB audio conversion is a part of circuit,I have bed off nail interface with PCB,I am going to measure the output In Voltage,I plan to use PICOSCOPE is it right,or is there other instruments are there

[johnsold]

What is the voltage at the output of your conversion circuit that you want to measure?

Lynn

[Raikar]

Lynn.

Its about 44mV to 600mV.

Raikar

[johnsold · Accepted solution]

Raikar,

I think you could use any DAQ device with a 16-bit A/D converter, preferably with a +/-1 or +/-2 V range, for the measurements.  For the signal source look for a device which has hardware timed Analog Output(s). You cannot get good waveforms with software timed AO.  Other details such as how long the signal will be allpied and whether the signal is constant or varying in time or frequency during a measurement amy affect the choice of devices.

Lynn

[Raikar]

Dear Lynn

Thanks for Your Valuable suggestion........