Connect resistor across pins 2 and 3 of the XLR. ( or Tip and ring of
TRS jack)
To measure the gain, the method I used was to use a resistive
attenuator to pad down a higher level signal that is more easily
measured into the input, and calculate the signal level at the input.
Along the general lines of
http://www.wildlife-sound.org/equipment/himd/himdmyths_meas.html
That way you have a chance of presenting the device with a small
signal
but present your measurement gear with a larger signal. I used 180ohm
as the shunt leg to ground but 150 is recommended.
--- In Gianni Pavan <>
wrote:
>
> please,
> can you post the exact wiring for the 150 ohm terminator on a
balanced line ?
> is this the most acceptable solution for comparing noise in
> different preamps ?
> but how to relate the measured noise if we don't know exactly
the
> total applied gain ?
> (the last question can be read this way: how to measure
> the total applied gain ?
> Gianni
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