580 Series plug-in interface: Difference between revisions

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An unusual aspect of the 580 Series plug-in interface is
An unusual aspect of the 580 Series plug-in interface is
the transmission line termination scheme for its output signal.
the transmission line termination scheme for the plug-in output signal.
The output signal passes from the plug-in, through the plug-in interface connector,
The output signal passes from the plug-in, through the plug-in interface connector,
through the first of two distributed amplifiers in the 580-series mainframe's signal chain,
through the first of two [[distributed amplifier]]s in the 580-series mainframe's signal chain,
and then back into the plug-in, which contains 93 Ω resistors to match
and then back into the plug-in, which contains 93 Ω resistors to match
the characteristic impedance of each side the balanced transmission line.
the characteristic impedance of each side the balanced transmission line.

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