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Lavoie LA-265A: Difference between revisions
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{{Oscilloscope Sidebar| | {{Oscilloscope Sidebar | ||
|manufacturer=Lavoie | |||
image=LA265A front.JPG | | |model=LA-265A | ||
caption=Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in | | |image=LA265A front.JPG | ||
introduced=(?) | | |caption=Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in | ||
discontinued=(?) | | |introduced=(?) | ||
summary=33 MHz oscilloscope | | |discontinued=(?) | ||
manuals= | |summary=33 MHz oscilloscope | ||
* [ | |designers= | ||
|series=500-series scopes | |||
|manuals= | |||
* [[Media:Lavoie LA265A Manual.pdf|Lavoie LA-265-A Manual]] | |||
}} | }} | ||
The '''Lavoie LA-265A''' is a 33 MHz scope that takes | The '''Lavoie LA-265A''' is a 33 MHz scope that takes [[letter-series and 1-series plug-ins]]. | ||
[[letter-series and 1-series plug-ins]]. It is an unauthorized clone of a | It is an [[unauthorized clone]] of a [[545|Tektronix 545A]] made for a defense contract by [[Lavoie Laboratories]]. | ||
[[545|Tektronix 545A]] made for a defense contract by [[Lavoie Laboratories]]. | |||
It has two timebases, which allows delayed triggering. | It has two timebases, which allows delayed triggering. | ||
{{MissingSpecs}} | |||
==Internals== | ==Internals== | ||
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The high-voltage circuit is not identical to that of the Tektronix [[545|545A]]. | The high-voltage circuit is not identical to that of the Tektronix [[545|545A]]. | ||
Neon lamps are used to stabilize the high voltage in brightness circuit. | Neon lamps are used to stabilize the high voltage in brightness circuit. | ||
However, the neon lamp stabilizer is often faulty - the | However, the neon lamp stabilizer is often faulty - the lamps aged too fast, with the result that the trace flickers. | ||
lamps aged too fast, with the result that the trace flickers. | |||
=== Mechanical difference to 545 === | === Mechanical difference to 545 === | ||
The mains transformer is potted. | The mains transformer is potted. | ||
Unlike Tektronix instruments of the same era, which require | Unlike Tektronix instruments of the same era, which require [[silver-bearing solder]], ordinary solder is fine for working on the Lavoie, because its terminal strips have tin-plated steel inserts. | ||
silver-bearing solder, ordinary solder is fine for working on the Lavoie | |||
==Links== | ==Links== | ||
* [ | * [https://www.radiomuseum.org/forum/lavoie_la_265a_a_superb_tek_clone.html LA-265A, a superb Tek clone] (radiomuseum.org forum) | ||
* [ | * [https://www.radiomuseum.org/r/lavoie_oscilloscope_la_265_ala26.html radiomuseum.org page for LA-265A] | ||
==Pictures== | ==Pictures== | ||