191: Difference between revisions
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* [http://w140.com/mmm/tek-191.pdf Tektronix 191 Manual (PDF)] | * [http://w140.com/mmm/tek-191.pdf Tektronix 191 Manual (PDF)] | ||
* [[Media:TB-9-6625-2176-35.pdf|TB-9-6625-2176-35 - 191 calibration]] | * [[Media:TB-9-6625-2176-35.pdf|TB-9-6625-2176-35 - 191 calibration]] | ||
* [[Media:Tek 191 fcp june 1966.pdf]] | * [[Media:Tek 191 fcp june 1966.pdf|Tektronix 191 Factory Calibration Procedure, June 1966]] | ||
==Pictures== | ==Pictures== |
Revision as of 11:02, 8 June 2019
The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source introduced in 1966.
Key Specifications
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The 191 covers frequencies from 350 kHz to 100 MHz in seven bands. The output amplitude can be adjusted in calibrated steps from 5 mV to 5 V in three ranges.
Internals
The oscillator is a Colpitts oscillator using a 7119 tube.
A peak-to-peak detector made with two GaAs diodes measures the swing of the oscillator and produces a DC feedback signal that controls a series voltage regulator that supplies power to the oscillator.
The calibration procedure in the manual makes use of a 661 to accurately view the output waveform.
Manuals
- Tektronix 191 Manual (PDF)
- TB-9-6625-2176-35 - 191 calibration
- Tektronix 191 Factory Calibration Procedure, June 1966
Pictures
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Front view
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Top internal view
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Bottom internal view
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Left internal view
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Right internal view
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Rear view
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Schematic