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127: Difference between revisions
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The Tektronix Type 127 is a power supply and preamplifier for | The Tektronix Type 127 is a power supply, calibrator, and unity-gain preamplifier for | ||
two [[letter-series and 1-series plug-ins|letter-series or 1-series plug-ins]]. | two [[letter-series and 1-series plug-ins|letter-series or 1-series plug-ins]]. | ||
The Type 127 was [[introduced in 1958]]. | The Type 127 was [[introduced in 1958]]. | ||
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[[500-series scopes|500-series oscilloscope]]: a 50/60Hz transformer, [[selenium rectifiers]], | [[500-series scopes|500-series oscilloscope]]: a 50/60Hz transformer, [[selenium rectifiers]], | ||
a single voltage reference tube controlling | a single voltage reference tube controlling | ||
all output voltages, and [[6080]] pass tubes for the regulated outputs | all output voltages, and [[6080]] pass tubes for the regulated outputs. | ||
The 127 targets use cases one wants to use Tektronix plug-ins as front-end amplifiers for other | |||
instrumentation. [[1-series and letter-series plug-ins]] have relatively high output impedance. | |||
The 127 provides 20MHz unity gain amplifiers that can drive low impedance loads such as long | |||
coaxial cables. Each of the two amplifiers in the 127 is fully differential and outputs are on | |||
the front and rear panels. | |||
The 127 has unity gain if the output is taken differentially and each output | |||
is terminated in 170 ohms. | |||
The 127 is a 5U (8.75"/22.2cm) rackmount unit and weighs 37 pounds (16.9kg). | |||
Maximum power consumption is 450W. | |||
<gallery> | <gallery> | ||