Signal Noise calculation Chemstation

[cinchocaine]

Hello,

when using the Agilent Chemstation software for signal to noise calculations, it apparently uses the formula S/N = Height / Noise.
Besides using 6xSD instead of PtoP, the correct formula should be 2*Height/Noise. Am I right? That's the formula which is given in the EP and USP.
Can anybody clarify, because this halves the S/N ratio in the Chemstation.

Thanks

[ntruong]

If my memory doesn't fail me... the range of the noise should be set at 5 x peak (halfwidth) of the peak of interest... then take the s/n value x 2 to get your final result.