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Fig. 15X82352- and 3-way U-links (type RPV 153), correspondingpatch cord plugs (type RPV 171), andtheir component partsupper panel carries a number of coaxial U-links; two plastic dummy insertscan however be seen in the centre of the panel. The lower panel providesoutlets for bay and station trunks, with lamps for indicating when engaged,etc. The panels can be provided with a cover plate.Cover PlatesMainly for aesthetic reasons, the front of the bay is equipped with coverplates except where there already is an enamelled front panel or wheremaintenance requirements introduce difficulties.The cover plates are held in place by brackets on the bayside test blocks,and when removed can easily be stacked. In the left-hand edge they eachhave a slot which slips under a stud on the test block bracket, while on the rightthere is a snap fastening (see fig. 8).Plates entirely cover the rear of the bay.Connectors and AccessoriesThe new mechanical design has also involved new designs of connectors,patch cords, fuses and other accessories. A few examples only of this arebriefly described below.Flat-contact Plugs and SocketsTo provide a flexible arrangement for unscreened connexions, gold-platedfork-shaped socket contacts are universally used; these together with someexamples of their application can be seen in fig. 14. Flat-contact U-linksand plugs designed to mate with these sockets are shown in fig. 15.Fig. , 6 x 2530 The connectors have in all cases been made irreversible by differences inPlug-in pad (type RF.R 424) and its mechanicalcomponents124the Wldth a n d distanCebetWeenalso fit this type of socket.contacts. The plug-in pads shown in fig. 16
Fig. 17Fig. 18Fig. 17 X 8236Coaxial sockets (type RNT 149)First row from left: socket with two soldering tagsfor attachment of cable, and its screen.Second row: socket for coaxial connexion, with panelfixing arrangements.Third row: component parts of the latter socket.Fourth row: component items of the fixing arrangement.Fig. 18 X 8237Coaxial plug (type RPT 159)Coaxial ConnectorsFor flexibility in connecting screened conductors and coaxial cables, coaxialsockets have been designed for two-pole connexions and for connecting toboth 8 mm and 5 mm coaxial cable - see fig. 17.These sockets are designed to fit the coaxial plugs for 8 mm and 5 mmcoaxial cable shown in fig. 18, and also the coaxial U-link shown in fig. 19.This U-link has been so designed that its components can also be used fora coaxial plug-in pad: it then carries a label giving the pad loss.with its component partsStation EquipmentIn a station the bays are assembled in suites back to back, and are heldtogether by a dust-protected cable duct designed to carry the station cabling.At either end of the suite there is a suite cabinet, one containing fuses anda power distribution board, and the other if so desired containing distributionarrangements for carrier supplies. One of the cabinets in addition containscommon alarm equipment for the whole suite.Fig. 19Coaxial U-link (type RPT 160)Above, assembled: below, component parts
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