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Revision A, October 1985

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Monochrome Cathode Ray Tube Bulb Criteria

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Description / Abstract:

The usual applicability of the five. General Quality Criteria is as established below:

Criteria No. 1 - Monochrome (Black & White), entertainment, direct-view television picture tube bulbs.

Criteria No. 2 - Earlier blown type industrial and military bulbs.

Criteria No. 3 - Pressed face industrial and military bulbs.

Criteria No..4 - Optical quality face industrial and military bulbs.

Criteria No. 5 - Pressed face rectangular bulbs for display terminal applications such as video data units and alphanumeric displays.

General quality criteria for color, direct-view, television picture tube bulbs are covered in EIA/TEPAC Publication No. 31 (Color). TEPAC Publication No. 123 is a glossary of terms used in the description of glass components and of their defects.

Note: Defects marked with an asterisk ( * ) are described in EIA Publication No. 123, Glossary of Terms used in the Description of Glass components and Their Defects. The limits for these defects should be as agreed upon between the glass manufacturer and the user.

General Quality Criteria No. 1

The following criteria, known as General QuaÍity Criteria No. 1 is usually applied to monochrome picture.tube bulbs. It contains the following sections:

I. Applicability

II. Definitions

III. Criteria Within Quality Area

IV. Criteria Outside Quality Area

V. Finish


This document establishes general quality criteria for monochrome CRT bulbs. General Quality Criteria No. 1, 2, and 3 were originally published in 1956 in JETEC Publication No. 10, which is no longer available; they are republished in this document without any revision or modification, because they have been incorporated by reference in other published materials.

General Quality Criteria No. 4, while in use informally for many years, has not previously been formally published. It was adopted in its present form. by TEPAC in 1979 and is being formally published at this time. General Quality Criteria No. 5 was prepared by the JT-20 Committee and also approved for use in 1979 by TEPAC; it is being published here for the first time.


A general quality criteria is one which supplements one or more individual bulb criteria and one whose requirements shall be met in addition to those of the individual bulb criteria. The applicable general quality criteria will be noted on the individual bulb criteria. When there is a difference between the requirements of the individual bulb criteria and the general quality criteria, the requirements of the individual bulb criteria shall rule.