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The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source
{{Instrument Sidebar
[[introduced in 1966]].  It covers frequencies from 350 kHz to 100 MHz in seven bands.  The output
|manufacturer=Tektronix
amplitude can be adjusted in calibrated steps from 5 mV to 5 V in three ranges. The oscillator
|model=191
is an Colpitts oscillator using a [[7119]] tube.  A peak-to-peak detector made with two GaAs diodes
|class=Signal generator
measures the swing of the oscillator and produces a DC feedback signal that controls a series
|series=
voltage regulator that supplies power to the oscillator.  The calibration procedure in the manual makes use
|summary=Constant Amplitude Signal Generator
of a [[661]] to accurately view the output waveform.
|image=Tek 191 front.jpg
|caption=Tektronix 191 front
|introduced=1966
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-0522-00.pdf|Tektronix 191 Manual]]
* [[Media:TB-9-6625-2176-35.pdf|TB-9-6625-2176-35 - 191 calibration]]
* [[Media:Tek 191 fcp june 1966.pdf‎|Tektronix 191 Factory Calibration Procedure, June 1966]]
}}
The '''Tektronix Type 191 Constant Amplitude Signal Generator''' is a sine wave source [[introduced in 1966]].


{{MissingSpecs}}
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. 
==Links==
{{Documents|Link=191}}
==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.
==Pictures==
<gallery>
<gallery>
Image:Tek_191_front.jpg|Front view
Tek_191_front.jpg|Front view
Image:Tek_191_top.jpg|Top internal view
Tek_191_top.jpg|Top internal view
Image:Tek_191_bottom.jpg|Bottom internal view
Tek_191_bottom.jpg|Bottom internal view
Image:Tek_191_left.jpg|Left internal view
Tek_191_left.jpg|Left internal view
Image:Tek_191_right.jpg|Right internal view
Tek_191_right.jpg|Right internal view
Image:Tek_191_rear.jpg|Rear view
Tek_191_rear.jpg|Rear view
Image:191.png|Schematic
191.png|Schematic
</gallery>
</gallery>
[[Category:Signal generators]]
[[Category:GR874]]

Latest revision as of 08:33, 16 November 2023

Tektronix 191
Constant Amplitude Signal Generator
Tektronix 191 front

Produced from 1966 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source introduced in 1966.

Key Specifications

  • please add

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.

Links

Documents Referencing 191

Document Class Title Authors Year Links
Tekscope 1970 V2 N3 Jun 1970.pdf Article Tektronix Signal Sources 1970

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.

Pictures