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The '''Tektronix TU-3''' is a calibration fixture plug-in for [[580-series scopes]] that was replaced by the [[84|Type 84]] which additionally contains a pulser to adjust vertical step response. | |||
The TU-3 consists of dummy loading resistors, two cathode followers, and a bistable multivibrator. | |||
The dummy loading resistors are connected to each regulated supply of the oscilloscope when the LOAD switch is set to HIGH, | |||
to test for the maximum power supply loading condition. | |||
The cathode followers decouple the input signal from the oscilloscope vertical amplifier and elevate the vertical amplifier input to the required voltage (about +50 volts). | |||
==Manuals== | |||
* [[Media:Tek tu-3.pdf|Tektronix TU-3 Instrument Reference Book (PDF, OCR)]] | * [[Media:Tek tu-3.pdf|Tektronix TU-3 Instrument Reference Book (PDF, OCR)]] | ||
{{MissingPics}} | |||
[[Category:Calibration fixtures]] | |||