Module Expr Str Import alias identifier ImportFrom alias alias alias FunctionDef arguments args NameParam NameParam defaults Num body Expr Str Assign NameStore Call NameLoad NameLoad Assign NameStore Call NameLoad NameLoad Assign NameStore Call AttributeLoad NameLoad attr BinOpMult NameLoad BinOpPow Num BinOpSub BinOpDiv NameLoad Num Num Return Call NameLoad NameLoad NameLoad decorator_list
N/A N/A This module provides the undbm() function.
 N/A numpy np _utils carray restore_input_form save_input_form undbm N/A N/A p z N/A 50 N/A N/A Calculate the RMS voltage equivalent of a power ``p`` expressed in dBm.

    .. math::

        V_{\mathrm{RMS}} = \sqrt{z\ 10^{p/10 - 3}}

    **Parameters:**

    p : scalar or sequence
        The power to be converted.

    z : scalar, optional
        The normalization resistance value, defaults to 50 ohm.

    **Returns:**

    Vrms : scalar or sequence
        The RMS voltage corresponding to ``p``.

    .. seealso:: :func:`undbp`, :func:`undbv`, :func:`dbm`, :func:`db`

     N/A iform N/A save_input_form p N/A p N/A carray p N/A up N/A N/A np sqrt N/A z N/A 10.0 N/A N/A p 10.0 3 N/A N/A restore_input_form up iform N/A