All image tubes, whether or not monochrome or colour kind are recognized by a particular code consisting of numbers and letters. The codes are different from every and other because different tubes have different traits.

For example, a particular monitor colour image tube may have the designation, M34AFA63X03 that can breakdown into six elements: M/34/AFA/63/X/03

Element 1: Software program

Computer monitor tubes begin with the letter “M&ampampquot whilst for a Tv image tube, it begin with &ampampquotA&ampampquot.

Element two: Display diagonal measure in centimeters (cm)

The &ampampquot34&ampampquot indicates the diagonal viewing measure is a minimum of 34cm which refers to 14&ampampquot tube, 36cm is 15&ampampquot, 41cm is 17&ampampquot and so on.

Element three: Family members code

The 3 letters &ampampquotAFA&ampampquot designate a family of tubes that have comparable bodily and electrical attribute. These letters are assigned alphabetically beginning with &ampampquotAAA&ampampquot, followed by &ampampquotAAB&ampampquot, &ampampquotAAC&ampampquot and so on.

Element 4: Family members quantity

The quantity 63 exhibits a particular tube inside the family code. A different quantity is assigned to tubes inside the exact same family that have different neck diameters, for example a single digit would be a monochrome tube, but this two-digit quantity exhibits it is colour.

Element 5: Phosphor Type

The fifth symbol offers the phosphor designation. The letter X here corresponds to P22 for colour image tubes. Color monitor tubes can have any other single letter (excluding I, O, or W) to designate other phosphor kind for several programs. For monochrome pictures, the phosphor symbol is WW, corresponding to P4. Monochrome monitor tubes also can use WW or some other two-letter combination (excluding I and O).

Element six: Integral neck elements

The sixth symbol is assigned only for tubes getting integral neck elements, such as the deflection yoke. The specs are only use to a particular tube producer. The main consideration here is winding inductance. The yoke coils have different sensitivity i.e. deflection per Amp in both horizontal and vertical.

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