211: Difference between revisions

caption=Tektronix 211 |

introduced=1971 |

manuals=

}}

The '''Tektronix 211''' is a 500 kHz single-channel miniaturized analog battery-powered oscilloscope.

settings for the elements inside the CRT.  

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The CRT division had a great concept where the new engineers work at each station

for a week or two learning all the processes and actually making parts.  The side

advantage is you meet the production people and when you need something you know who

to ask.

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The CRT's  for the 211, 212, 213, and the storage version, 214, were manufactured

these 4 operators. The yield and volume for the Miniscope CRT  became much higher

than the conventional CRT's.

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The cathode for the Miniscope CRT was a critical part of the design.  It took

The cathode was a small disk with the triple carbonate coating blown on to the

surface at a precise thickness.

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As with most of the Tektronix CRT's, it used deflection blanking where the beam is

control with the associated electronics than changing the negative high voltage with

respect to the grid.

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Glass rods hold the elements in place inside the CRT.  Having so many elements

embedded in such a small glass rod made them fragile.  The rodding process was

carefully controlled for temperature and time.

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The bulb of the CRT was ceramic with an internal gold plating as the anode.  The

resist burning the phosphor and reflected the light from the back to the front for a

brighter sweep.

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The electron gun was welded to the stem with the pins.  That was inserted into the

flash, the better is absorbed the impurities, but too much flashing could short out

metal parts.

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A coil was wound around the CRT to allow for a trace rotation adjustment in the

<gallery>

</gallery>

[[Category:200 series scopes]]

[[Category:Introduced in 1972]]