107: Difference between revisions
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The Tektronix 107 is a squarewave generator. It was intended to be used for calibration | The Tektronix 107 is a squarewave generator. | ||
of oscilloscopes. It is designed to provide a clean waveform with fast edges and flat | It was intended to be used for calibration of oscilloscopes. | ||
tops. The signal path starts with an astable | It is designed to provide a clean waveform with fast edges and flat tops. | ||
multivibrator composed of both halves of a 6BQ7A dual triode tube. The multivibrator | The signal path starts with an astable | ||
circuit is cathode coupled to a pulse shaping circuit, and then to an output stage | multivibrator composed of both halves of a [[6BQ7A]] dual triode tube. | ||
made from a single 6AU6 tube with a 50-ohm plate load, providing a controlled | The multivibrator circuit is cathode coupled to a pulse shaping circuit, | ||
50-ohm output impedance. The 50-ohm plate load keeps the voltage gain of output stage | and then to an output stage made from a single [[6AU6]] tube with a 50-ohm plate load, | ||
low, and the bandwidth high. | providing a controlled 50-ohm output impedance. | ||
The 50-ohm plate load keeps the voltage gain of output stage low, and the bandwidth high. | |||
When loaded with 50 ohms, the output is a rectangular waveform with: | When loaded with 50 ohms, the output is a rectangular waveform with: | ||
Revision as of 23:12, 16 March 2012
The Tektronix 107 is a squarewave generator. It was intended to be used for calibration of oscilloscopes. It is designed to provide a clean waveform with fast edges and flat tops. 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-ohm plate load, providing a controlled 50-ohm output impedance. The 50-ohm plate load keeps the voltage gain of output stage low, and the bandwidth high.
When loaded with 50 ohms, the output is a rectangular waveform with:
- less than 3ns risetime (fixed)
- 400kHz to 1MHz repetition rate (uncalibrated)
- 100mV to 500mV peak-to-peak amplitude (variable)
The 107 weighs 13 pounds and uses 100 watts.
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Output, C94, R94, and R95
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