Hi there,

I am sending a 0dBFS sine signal (200Hz), created via MATLAB, to the output of the HDSP 9632 card. The output level setting is -10dBV, which means that 0dBFS produces +2dBV (rms).

Now, if I am not wrong, I would expect to measure an rms voltage (using a digital multimeter) of 10^(2/20) = 1.26V between the hot and cold pins (tip/ring of the TRS plug).

Instead, I measure roughly double that, i.e. 2.49V. Would that mean that contrary to what I assumed above, I am wrong and +2dBV refers to half of the rms measured between the balanced connection wires?

Thanks for the assistance,
Chris