191: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| (7 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
[[ | {{Instrument Sidebar | ||
The '''Tektronix Type 191 Constant Amplitude Signal Generator''' is a sine wave source | |manufacturer=Tektronix | ||
[[introduced in 1966]]. | |model=191 | ||
|class=Signal generator | |||
|series= | |||
|summary=Constant-amplitude signal generator | |||
|image=Tek 191 front.jpg | |||
|caption=Tektronix 191 front | |||
|introduced=1966 | |||
|discontinued=(?) | |||
|designers=John Mulvey; | |||
|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]] to replace the earlier [[067-506]]. | |||
It produces a sine output from 350 kHz to 100 MHz in seven bands whose amplitude remains constant as the frequency is varied, provided the load limitations of the instrument are not exceeded. | |||
The output amplitude can be adjusted in calibrated steps from 5 mV to 5 V in three ranges. | |||
{{BeginSpecs}} | |||
{{Spec | Output impedance | 50 Ω }} | |||
{{Spec | Amplitude range | 5–50 mV, 50-500 mV, 0.5-5 V<sub>p-p</sub> }} | |||
{{Spec | Amplitude accuracy | At 50 kHz into a 50 Ω load: ±3% for 0.5–5 V range; ±4% for 50–500 mV range; ±5% for 5–50 mV range }} | |||
{{Spec | Amplitude regulation | ±3% for 5 mV to 5.5 V into 50 Ω at 50 KHz; +3%/-5% for 5 mV and 55 mV ranges or frequency >42 MHz }} | |||
{{Spec | Frequency range | 350 kHz – 100 MHz }} | |||
{{Spec | Frequency accuracy | Within ±2% of the selected frequency when the output is terminated with 50 Ω }} | |||
{{Spec | Harmonic content | Typically less than 5% }} | |||
{{EndSpecs}} | |||
==Links== | |||
{{Documents|Link=191}} | |||
{{PatentLinks|191}} | |||
==Internals== | ==Internals== | ||
| Line 16: | Line 42: | ||
The calibration procedure in the manual makes use of a [[661]] to accurately view the output waveform. | The calibration procedure in the manual makes use of a [[661]] to accurately view the output waveform. | ||
==Pictures== | ==Pictures== | ||
| Line 33: | Line 54: | ||
</gallery> | </gallery> | ||
[[Category:Signal generators | ==Components== | ||
{{Parts|191}} | |||
[[Category:Signal generators]] | |||
[[Category:GR874]] | [[Category:GR874]] | ||
Latest revision as of 04:47, 16 October 2024
The Tektronix Type 191 Constant Amplitude Signal Generator is a sine wave source introduced in 1966 to replace the earlier 067-506.
It produces a sine output from 350 kHz to 100 MHz in seven bands whose amplitude remains constant as the frequency is varied, provided the load limitations of the instrument are not exceeded. The output amplitude can be adjusted in calibrated steps from 5 mV to 5 V in three ranges.
Key Specifications
| Output impedance | 50 Ω |
|---|---|
| Amplitude range | 5–50 mV, 50-500 mV, 0.5-5 Vp-p |
| Amplitude accuracy | At 50 kHz into a 50 Ω load: ±3% for 0.5–5 V range; ±4% for 50–500 mV range; ±5% for 5–50 mV range |
| Amplitude regulation | ±3% for 5 mV to 5.5 V into 50 Ω at 50 KHz; +3%/-5% for 5 mV and 55 mV ranges or frequency >42 MHz |
| Frequency range | 350 kHz – 100 MHz |
| Frequency accuracy | Within ±2% of the selected frequency when the output is terminated with 50 Ω |
| Harmonic content | Typically less than 5% |
Links
Documents Referencing 191
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1970 V2 N3 Jun 1970.pdf | Article | Tektronix Signal Sources | 1970 | 2101 • 2901 • 114 • 115 • R116 • 106 • 191 • 284 • 140 |
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
-
Front view
-
Top internal view
-
Bottom internal view
-
Left internal view
-
Right internal view
-
Rear view
-
Schematic
Components
Some Parts Used in the 191
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 7119 | 154-0340-00 | Vacuum Tube (Dual Triode) | dual triode | 067-506 • 067-0532-00 • 191 • 3A3 • 3B4 • 3B5 • 516 • 545B • 549 • 661 • Chemtrix 205 |