MIL-DTL- 24784/11C(NAVY)
3MC
Aviators' announcing systems
4MC
Damage control announcing system
MS
Remote switching control system
N
Rudder angle indicator system
5N-6N
Emergency rudder angle indicator systems
RC
Catapult signal system
TL
Dead reckoning system
VP
Controllable pitch propeller indicating system
Y
Underwater log system
e.
Flow diagrams - Flow diagrams shall depict transmission of signals from source or origin to destination.
Typical flow diagrams, with appropriate reference to tables, may be used for systems containing duplicate
subsystems. Directional flow diagrams shall be marked to indicate the specific electrical and mechanical
signal characteristics being transmitted. The text, in conjunction with supporting diagrams, shall define the
interrelationships between the systems being described and associated systems.
f.
System checkout - System checkout procedures shall be provided to enable periodic evaluation of the
system's operational status. A systematic approach shall be included for isolating equipment failure, open
circuits, shorts, and grounds in system cabling. Checkout procedures in equipment technical manuals and
test memoranda shall be referenced to supplement the description as required.
g.
Power supplies - Voltage, frequency, phase, source, and location of power supply (switch and fuse size not
required) shall be identified. A schematic wiring diagram showing switchboard power supplies, bussing,
and interties shall be included in the section covering IC switchboards.
h.
Referenced material - Principal installation drawings, technical manuals, and other data pertaining to the
installation shall be referenced, where applicable.
3.8.5.2 Part 2. Sound-powered telephone systems, voice tubes, and message-passing facilities shall be divided
into applicable chapters as follows:
Chapter 1 - General information.
Chapter 2 - Ship control circuit.
Chapter 3 - Engineers' and damage control circuits.
Chapter 4 - Armaments control and associated circuits
Chapter 5 - Miscellaneous circuits (not included in above categories).
Chapter 6 - Voice tubes and message-passing facilities.
a. Chapter 1 shall include information on the telephone systems and types of circuits installed, and the
function and use of associated equipment such as plotter's transfer switchboard, amplifiers, tie switches, untie
switches, tie lines, and selective switches. A complete list of the telephone circuits (in alphabetical order) and a list
of the selective switches shall be included.
b. Each chapter, 2 through 5, shall describe the function of the associated circuits, and shall include a list of
telephones by circuit, and a list of telephones by station. Sound-powered telephone calls provided shall be included
in the list of telephones by circuit. A comprehensive description and schematic wiring diagrams shall be provided
for those circuits which incorporate special transfer switching.
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