MIL-DTL-24784/20B (SH)
b. FCD electrical and electronic graphic symbols shall be drawn as medium (0.01 inch) lines.
Graphic symbol nomenclature shall be positioned to achieve the best clarity.
c. On-page and off-page connectors and miscellaneous symbols shall be drawn as medium (0.01
inch) lines and in accordance with the dimensions depicted on figure 20-15.
3.6 Technical contents for digital systems manuals.
3.6.1 Specific requirements. The manuals shall provide system and subsystem oriented
instructions for operation, maintenance, installation, and testing. Detailed equipment data should
be provided by reference to the equipment manuals (see MIL-DTL-24784 and MIL-DTL-
24784/21). However, for this manual, the technical data shall be developed at the digital
equipment level and be included for all digital equipment system and subsystem and interface
components not covered by an equipment technical manual. The contents shall be arranged in
chapters according to the following:
a.
Chapter 1 - General information and safety precautions.
b.
Chapter 2 - Scheduled maintenance.
c.
Chapter 3 - Functional description.
d.
Chapter 4 - Operation.
e.
Chapter 5 - Fault-isolation.
f.
Chapter 6 - System alignment.
g.
Chapter 7 - System cabling.
h.
Chapter 8 - Unit level maintenance.
3.6.2 Chapter 1, General information and safety precautions. All safety precautions necessary
for the protection of personnel and the ship shall be included and cross-referenced as the initial
paragraphs ahead of the introduction. These precautions shall be prepared as specified (see
MIL-DTL-24784). The remaining content of this chapter shall be so that command level,
supervisory personnel, and other users having a general interest in the equipment can easily and
rapidly determine the purpose, physical and functional characteristics, and the operational
capabilities of the digital system.
3.6.2.1 Safety precautions. This section shall describe the hazards associated with system
operation and maintenance.
3.6.2.1.1 Introduction. This description shall orient system supervisory personnel, and shall
include the following:
a. Purpose, scope, and organization of the system safety instructions.
b. Basic safety concepts.
c. Basic responsibilities for safety.
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