Definitions for "Input Impedance"
The impedance presented by an antenna at its terminals.
The shunt resistance and capacitance (or inductance) measured at the input terminals, without including the effects of input bias or offset currents.
The impedance seen by a source when a device or circuit is connected across the source.
Keywords:  prf, mil, oscillator, tri, voltage
The load represented by input connections on the oscillator used for voltage control or tri-state control (MIL-PRF-55310D, 4.8.30).
The electrical resistance created by the input connections on an audio/video component.