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TELETYPES
SUMMARYCOMPUTER  OPERATOR CONTROLS AND CONTROLLING UNITS

Fire Controlman Volume 03-Digital Data Systems
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Figure  3-10.—Example  of  a  teletype. commands  to  communicate  in  the  system  operating manuals (SOMs) and the documentation used for testing. The keyboard used with an IOCC is similar to a stand-alone keyboard except there are no special function and control keys. Figure 3-10 is an illustration of a teletype used with a computer. The teletype has two levels of controls and indications. They are as follows: Initiate computer operations Control computer operations REMOTE CONSOLES AND REMOTE OPERATOR CONTROL UNITS Remote consoles and remote operator control units (ROCUs) have controls and indicators you can use to initiate,  control,  and  monitor  computer  operations.  You cannot power the computer set up/down from this unit. From some remote units you can initiate, control, and monitor up to two CPUs. Other remote units only allow you to initiate, control, and monitor one CPU at a time. Some remote units have a built-in microprocessor to indicate faults and perform self-tests on the remote unit. Remote units can also indicate an overtemperature condition. More sophisticated remote units can control their own power supply, indicate if the computer is in a battle  short  condition,  and  monitor  and  indicate individual module status. Remote units can be located from 150 to 300 feet from  the  computer.  Remote  consoles  monitoring capabilities   include   switch   settings,   hardware availability,  halts,  jump  stops,  breakpoints  on  some computer sets, and operator input. Remember, key settings  can  interact  with  computer  software. Depending on the technology of the remote unit, it can have up to four levels of controls and indications as follows: 3-13 Self-testing and fault indications Initiate computer operations Control computer operations Monitor  individual computer status module status and overall






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