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{{Oscilloscope Sidebar |manufacturer=Tektronix | | {{Oscilloscope Sidebar | ||
series=400-series scopes | | |manufacturer=Tektronix | ||
model=442 | |series=400-series scopes | ||
|model=442 | |||
summary=35 MHz dual-trace scope | | |summary=35 MHz dual-trace scope | ||
image=Tek 442 1.jpg | | |image=Tek 442 1.jpg | ||
caption=Tek 442 | | |caption=Tek 442 | ||
introduced=(?) | | |introduced=(?) | ||
discontinued=(?) | | |discontinued=(?) | ||
manuals= | |designers= | ||
|manuals= | |||
* [[Media:070-2373-00.pdf|Tektronix 442 Operators Manual (PDF, OCR, bad-OCR)]] | * [[Media:070-2373-00.pdf|Tektronix 442 Operators Manual (PDF, OCR, bad-OCR)]] | ||
* [[Media:070-2374-01.pdf|Tektronix 442 Service Manual (PDF, OCR, bad-OCR)]] | * [[Media:070-2374-01.pdf|Tektronix 442 Service Manual (PDF, OCR, bad-OCR)]] | ||
Revision as of 09:49, 15 August 2021
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.
