13LO3i CRT Tube D=135mm Green Glow with Average Afterglow Screen soviet

Manufactured at plant "Ekran". Please note that the conclusions of the plates are made not on the base, but on the neck. This was done in order to increase the bandwidth of the tube: long wires from the base to the plates significantly limited the bandwidth. This CRT was also used in a fairly wide range of oscilloscopes: IO-60 (aka C1-13), UO-2 (aka C1-15), UO-1m (aka C1-8a), C1-13a, C1-20 and C1-54. A couple of posts earlier, I wrote about the fact that in the 90s one of the most popular educational oscilloscopes was the C1-83. So, he replaced the C1-54, which dominated the educational laboratories from the mid-70s to the end of the 80s.


13LO3I
Oscillographic cathode-ray tube 13LO3I single-beam with electrostatic focusing and beam deflection, green glow.
It is produced in a glass container with one stage of post-acceleration, with a round-shaped screen with a convex surface.
CRT 13LO3I is designed for visual observation of electrical processes in radio engineering equipment for general and special purposes.
Beam deflection is electrostatic.
Green glow screen with medium afterglow.
Afterglow time is not more than 0.1 s.
The size of the working part of the screen is not less than 80x108 mm.
The width of the focused line in the center is not more than 0.75 mm, along the edges is not more than 0.9 mm.
Decoration is glass, with a plinth (РШ10).
Overall dimensions of the 13LO3I oscilloscope tube:
   - length no more than 435 mm;
   - screen diameter not more than 135 mm.
Weight not more than 1000 g.
Specifications: CE3.350.010TU.

Minimum operating time:
  - 1500 hours in the modes and conditions allowed by technical specifications;
  - 3400 hours in light mode.
The operating time is calculated within the warranty period of storage.

Deciphering the marking of the oscilloscope tube:
13LO3I
13 - a number indicating the diameter (diagonal) of the screen in centimeters;
LO - a combination of letters that define the type of CRT: LO - oscilloscope and indicator tubes with electrostatic beam deflection;
3 - the number of the serial number of the development of this type of CRT;
I - a letter characterizing the type of screen: And - a single-layer coating of a fine structure, a green glow with an average afterglow.

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