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Computer Switching and Control Panel (CSCP)
ANALOG  SWITCHBOARDS

Fire Controlman Volume 03-Digital Data Systems
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switch position is in the ON position. Red indicates the switch is in the OFF position. Green indicates the switch is in the NORMAL position, while yellow indicates the switch is in the ALTERNATE position. Figure 13-27 shows an example of a typical CSCP configuration. The number and functional assignment of PBIs vary from ship to ship. The PBIs in the lower right comer of the CSCP front panel shown in figure 13-27 are used to apply power to the CSCP PBIs (ON), to indicate current CSCP control status (CSCP CONTROL or ALT CSCP CONTROL), and to transfer control from the controlling CSCP to the alternate CSCP (REQ CONTROL, HOLD, ACT CSCP REQ CONTROL, and ALT CSCP HOLD). Manual PBI actions are required at both CSCPs to transfer control between panels. At the requesting CSCP, depression of the REQ CONTROL  PBI  will  cause  the  ALT  CSCP  REQ CONTROL  indicator  to  light  red  on  the  controlling CSCP. The REQ CONTROL PBI will flash red on the requesting CSCP until the operator of the controlling CSCP  depresses  AT  CSCP  CONTROL  PBI,  giving control to the requesting CSCP. The CSCP CONTROL light will come on when the requesting CSCP is in control and the flashing light will go out. The HOLD PBIs are used to indicate refusal to transfer control. SHIP, SWITCHBOARD, AND COMPUTER SWITCHING CONTROL PANEL (CSCP) WIRING Switchboard  and  CSCP  wires  connect  assemblies and  components  inside  the  switchboard  and  CSCP. Ship’s cables are individually plug-connected to panel connectors  in  the  switchboard.  Ship’s  cables  are identified by a cable group number and cable type. Ship’s  cables,  switchboard  wires,  and  CSCP harness wires use plastic sleeves or metal tags for marking. Each ship wire has a marking bearing the ship’s  wire  number.  When  required,  switchboard  and CSCP wires have plastic marking sleeves at each end. The sleeves identify the terminals at both ends of the wire. Separate wiring codes are used for ship’s wires, switchboard wires, and CSCP wires. The  ship’s  wire  marking  codes  are  system  oriented. They consist of an alphanumeric code that identifies the signal  being  carried  by  function  number,  circuit designation, and assigned wire number. A typical ship’s wire code number is shown in table 13-4. Table  13-4.—A  Typical  Ship’s  Wire  Code  Number There are eight types of PANEL ASSEMBLY connectors used in the switchboard. These connectors are used for the linear movement switch assemblies, fuse tester assembly, relay tester assembly, and power distribution assembly. They consist of various types of 120-, 117-, 104-, 85-, 38-,  20-,  10-,  and  3-pin connectors. For wiring and maintenance purposes, a common alphanumeric designation system is used to identify specific circuit connections, as shown in table 13-5. Table  13-5.—Panel  Connection  Cable  Code Within the switchboard are what are known as matrix panels. The matrix panels interconnect the signal paths between the ship’s wiring and the assembly panels.  The  designation  codes  for  matrix  panel connections are shown in table 13-6. Table  13-6.—Matrix  Panel  Connection  Code Intersection connectors are used to tie switchboard sections together. Intersection connector codes are identified in table 13-7. Table  13-7.—Intersection  Connector  Code The CSCP uses two types of connectors, a 10-pin connector  and  an  85-pin  connector.  The  l0-pin connectors are designated JA, JB, JN, and JP. The 85-pin connectors are designated JC through JG, JH, and  JK.  The  alphanumeric  identification  shown  in  table 13-8 is used for CSCP connectors. 13-34






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