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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 | 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 | 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. | ||