107
![](http://w140.com/tekwiki/images/thumb/9/94/Tek_107_front1.jpg/350px-Tek_107_front1.jpg)
The Tektronix 107 is a squarewave generator introduced in 195. It is designed to provide a clean waveform with fast edges and flat tops for the calibration of oscilloscopes.
Key Specifications
Output | rectangular waveform, 100−500 mVp-p (variable) into 50 Ω |
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Rise time | less than 3 ns (fixed) when terminated into 50 Ω |
Repetition rate | 400 kHz to 1 MHz (uncalibrated) |
Weight | 5.9 kg (13 pounds) |
Power | 100 W |
Manuals
Internals
The signal path starts with an astable multivibrator composed of both halves of a 6BQ7A dual triode tube. The multivibrator circuit is cathode coupled to a pulse shaping circuit, and then to an output stage made from a single 6AU6 tube with a 50 Ω plate load, providing a controlled 50 Ω output impedance. The 50 Ω plate load keeps the voltage gain of output stage low, and the bandwidth high.
Pictures
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Output, C94, R94, and R95
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left external
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right external