39,465
edits
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
The ''' | {{Oscilloscope Sidebar| | ||
[[letter-series and 1-series plug-ins]]. | title=Lavoie LA-265A | | ||
image=LA265A_1.jpg | | |||
caption=Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in | | |||
introduced=(?) | | |||
discontinued=(?) | | |||
summary=33 MHz oscilloscope | | |||
manuals= | |||
* [http://w140.com/LA265A.pdf Lavoie LA-265-A Manual (PDF)] | |||
}} | |||
The '''Lavoie LA-265A''' is a 33 MHz scope that takes | |||
[[letter-series and 1-series plug-ins]]. It is an unauthorized clone of a | |||
[[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. | ||
==Internals== | ==Internals== | ||
Line 9: | Line 19: | ||
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 | However, the neon lamp stabilizer is often faulty - the | ||
lamps aged too fast, with the result that the trace flickers. | |||
=== Mechanical difference to 545 === | === Mechanical difference to 545 === | ||
Line 17: | Line 27: | ||
silver-bearing solder, ordinary solder is fine for working on the Lavoie. | silver-bearing solder, ordinary solder is fine for working on the Lavoie. | ||
This is because the terminal strips in the Lavoie have tin-plated steel inserts. | This is because the terminal strips in the Lavoie have tin-plated steel inserts. | ||
==Links== | ==Links== | ||
Line 27: | Line 34: | ||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
File:LA265A_1.jpg | Lavoie LA265A with [[Lavoie LA-265-CA]] Plug-in | |||
File:Lavoie ca plugin.jpg|Lavoie CA Plug-in | File:Lavoie ca plugin.jpg | [[Lavoie LA-265-CA]] Plug-in | ||
File:LA265A_2.jpg | Ceramic terminals with tin-plated steel insert | |||
File:LA265A_HV.png | Schematic of HV-Supply, glow stabilizer | |||
</gallery> | </gallery> | ||
[[Category:500 series scopes]] | [[Category:500 series scopes]] | ||
[[Category:Lavoie products]] | [[Category:Lavoie products]] |