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The Tektronix Type 127 is a power supply and preamplifier for two 1-series or letter-series | The Tektronix Type 127 is a power supply and preamplifier for two 1-series or letter-series | ||
plug-ins. It is a rack-mount unit with a power supply that resembles the power supply of a | plug-ins. It is a rack-mount unit with a power supply that resembles the power supply of a | ||
500-series oscilloscope: a 50/60Hz transformer, a single voltage reference tube controlling | 500-series oscilloscope: a 50/60Hz transformer, selenium rectifiers, a single voltage reference tube controlling | ||
all output voltages, and 6080 pass tubes for the regulated outputs. The 127 contains a | all output voltages, and 6080 pass tubes for the regulated outputs. The 127 contains a | ||
fully differential DC-coupled 15MHz amplifier for each channel with cathode follower outputs | fully differential DC-coupled 15MHz amplifier for each channel with cathode follower outputs | ||
on the front | on the front and rear panels. | ||