Abstract: During manufacture, the components of a cathode ray tube must be protected against contaminants, such as dust, that will degrade performance of the completed tube. A protective tunnel, in which a contaminant-free environment can more easily be maintained, protects open cathode ray tube funnels that are moved between a coating station and a drying oven. Access doors may be provided to allow for cleaning and maintenance of the tunnel, as well as access to cathode ray tube funnels in the tunnel. A vacuum system may also be provided to clean airborne contaminants from the protective tunnel.

Abstract: A load voltage socket is provided for monitoring the load voltage across a CRT during aging so as to determine the current aging condition. The socket is insertable between the CRT and an aging line socket. The socket is provided with a plurality of banana plugs or other connecting means by which the load voltage socket may be conveniently connected to a voltage meter or other measuring instrument for the purposes of monitoring or determining the current aging condition.

Abstract: During manufacture, the components of a cathode ray tube must be protected against contaminants, such as dust, that will degrade performance of the completed tube. A protective tunnel, in which a contaminant-free environment can more easily be maintained, protects open cathode ray tube funnels that are moved between a coating station and a drying oven. Access doors may be provided to allow for cleaning and maintenance of the tunnel, as well as access to cathode ray tube funnels in the tunnel. A vacuum system may also be provided to clean airborne contaminants from the protective tunnel.

Abstract: A novel test lead can be used to connect an aging line with a voltage or multi-meter in order to monitor the voltage output by the aging line. The aging line is used to age electronic devices and components, particularly cathode ray tubes, during the manufacturing process. The test lead includes a plug adapted for ready connection to an output socket of the aging line without requiring any disassembly of the socket. The other end of the test lead preferably includes a number of clips, banana or alligator, for connecting the lead to the voltage or multi-meter. In this way, the output voltage of the aging line can be easily and rapidly tested for conformance with predetermined specifications.