464: Difference between revisions
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* [[Media:070-1653-01.pdf|Tektronix 464 Manual (PDF, OCR)]] | |||
* [[Media:tek_464_schematics.pdf|Tektronix 464 Schematics (PDF, color, OCR, bad-OCR)]] | |||
<small> | |||
'''Modifications''' | |||
* [[Media:050-1558-00.pdf|U3165 Replacement]] | |||
</small> | |||
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* [http://w140.com/tek_464.pdf Tektronix 464 Manual (PDF)] | * [http://w140.com/tek_464.pdf Tektronix 464 Manual (PDF)] | ||
* [http://w140.com/tek_464_color_schematics.pdf Tektronix 464 Schematics (PDF, color)] | * [http://w140.com/tek_464_color_schematics.pdf Tektronix 464 Schematics (PDF, color)] | ||
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}} | }} | ||
The '''Tektronix 464''' is a portable 100 MHz dual-trace [[CRT storage scope]] with dual time bases. | The '''Tektronix 464''' is a portable 100 MHz dual-trace [[CRT storage scope]] with dual time bases. | ||
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The optional [[DM44]] multimeter attaches to the top of the instrument. | The optional [[DM44]] multimeter attaches to the top of the instrument. | ||
{{MissingSpecs}} | |||
==Internals== | ==Internals== | ||
The vertical signal path of the 464 starts with a rotary cam-operated compensated attenuator. | The vertical signal path of the 464 starts with a rotary cam-operated compensated attenuator. | ||
Next is a source-follower made with a [[2N5911]] dual JFET, part number 151-1032-00. | Next is a source-follower made with a [[2N5911]] dual JFET, part number 151-1032-00. | ||
Next is a discrete BJT-based preamp followed by diode-based channel switching | Next is a discrete BJT-based preamp followed by diode-based channel switching and delay driver. | ||
and delay driver. The final vertical amplifier, U464, is the [[155-0155-00]]. | The final vertical amplifier, U464, is the [[155-0155-00]]. | ||
The [[155-0077-01]] is listed as an alternative part for U464. | The [[155-0077-01]] is listed as an alternative part for U464. | ||
Triggering in the 464 is done using STD704 4.7 mA 18 pF [[tunnel diodes]], | Triggering in the 464 is done using STD704 4.7 mA 18 pF [[tunnel diodes]], part number [[152-0125-00]] or [[152-0125-01]]. | ||
part number [[152-0125-00]] or [[152-0125-01]]. | The trigger amplifier is made of discrete BJTs and a [[155-0032-01]] amplifier IC, presumably an improved version of the [[155-0032-00]]. | ||
The trigger amplifier is made of discrete BJTs and a [[155-0032-01]] amplifier IC, | |||
presumably an improved version of the [[155-0032-00]]. | |||
The horizontal amplifier is made of discrete BJTs. | The horizontal amplifier is made of discrete BJTs. | ||
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</gallery> | </gallery> | ||
{{Custom ICs|464}} | |||
[[Category:400 series scopes]] | [[Category:400 series scopes]] | ||
[[Category:Analog storage scopes]] | [[Category:Analog storage scopes]] | ||
Revision as of 01:57, 17 August 2021
The Tektronix 464 is a portable 100 MHz dual-trace CRT storage scope with dual time bases. It is a lower cost version of the 466, with a slower writing speed and without the reduced scan feature. The 464 has a linear power supply.
The optional DM44 multimeter attaches to the top of the instrument.
Key Specifications
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Internals
The vertical signal path of the 464 starts with a rotary cam-operated compensated attenuator. Next is a source-follower made with a 2N5911 dual JFET, part number 151-1032-00. Next is a discrete BJT-based preamp followed by diode-based channel switching and delay driver. The final vertical amplifier, U464, is the 155-0155-00. The 155-0077-01 is listed as an alternative part for U464.
Triggering in the 464 is done using STD704 4.7 mA 18 pF tunnel diodes, part number 152-0125-00 or 152-0125-01. The trigger amplifier is made of discrete BJTs and a 155-0032-01 amplifier IC, presumably an improved version of the 155-0032-00.
The horizontal amplifier is made of discrete BJTs.
Serial numbers B010100 through B079999 use the 154-0722-00 CRT. Serial numbers B080000 and up use the 154-0749-00 CRT.
Links
Pictures
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