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The Tektronix 442 is a | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
|series=400-series scopes | |||
|model=442 | |||
|summary=35 MHz dual-trace scope | |||
|image=Tek 442 1.jpg | |||
|caption=Tek 442 | |||
|introduced=(?) | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:070-2373-00.pdf | Tektronix 442 Operators Manual ]] (low resolution) | |||
* [[Media:070-2374-01.pdf | Tektronix 442 Service Manual ]] | |||
}} | |||
The '''Tektronix 442''' is a 35 MHz dual-trace oscilloscope with a single timebase. | |||
==Specifications== | |||
[[Category:Specifications needed]] ''please add'' | |||
The anode voltage on the CRT is 10 kV and the standard [[phosphor]] was P31. | |||
A Tektronix 442 consumes 36 watts and weighs about 20 pounds. | |||
==Internals== | |||
Serials numbers from B010100 to B010786 use the [[154-0729-00]] CRT. | Serials numbers from B010100 to B010786 use the [[154-0729-00]] CRT. | ||
Starting with serial number B010787, the 154-0804-00 CRT is used. | Starting with serial number B010787, the [[154-0804-00]] CRT is used. | ||
Triggering is done using a trigger amplifier made of discrete bipolar transistors and | Triggering is done using a trigger amplifier made of discrete bipolar transistors and | ||
a 74S00 TTL quad NAND gate configured as a flip-flop. | a 74S00 TTL quad NAND gate configured as a flip-flop. | ||
The power supply is linear and regulated using | The power supply is linear and regulated using op amps as error amplifiers. | ||
The vertical and horizontal amplifiers are made of discrete bipolar transistors | The vertical and horizontal amplifiers are made of discrete bipolar transistors | ||
except for the dual-JFETs that are used as high-impedance buffers at the signal inputs. | except for the dual-JFETs that are used as high-impedance buffers at the signal inputs. | ||
==Links== | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek 442 1.jpg | |||
File:Tek 442 e1.JPG | |||
File:Tek 442 e2.JPG | |||
File:Tek 422 1.JPG | |||
File:Tek 422 2.JPG | |||
Tek 442 1.jpg | |||
Tek 442 2.jpg | |||
Tek 442 3.jpg | |||
Tek 442 4.jpg | |||
Tek 442 rear.jpg | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|442}} | |||
[[Category:400 series scopes]] | |||
Latest revision as of 12:00, 29 November 2023
The Tektronix 442 is a 35 MHz dual-trace oscilloscope with a single timebase.
Specifications
please add
The anode voltage on the CRT is 10 kV and the standard phosphor was P31.
A Tektronix 442 consumes 36 watts and weighs about 20 pounds.
Internals
Serials numbers from B010100 to B010786 use the 154-0729-00 CRT. Starting with serial number B010787, the 154-0804-00 CRT is used.
Triggering is done using a trigger amplifier made of discrete bipolar transistors and a 74S00 TTL quad NAND gate configured as a flip-flop.
The power supply is linear and regulated using op amps as error amplifiers.
The vertical and horizontal amplifiers are made of discrete bipolar transistors except for the dual-JFETs that are used as high-impedance buffers at the signal inputs.
Links
Pictures
Components
Some Parts Used in the 442
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 154-0729-00 | 154-0729-00 | CRT | CRT | T921 • T922 • T922R • T932 • T932A • T935 • T935A • 442 |
| 154-0804-00 | 154-0804-00 | CRT | CRT | 442 • T922 |