DEFSTAN 00-18(PT2)/2(1990) : 1990

Section A. Introduction
1 Scope
2 Purpose
3 Definition of terms
Section B. General Requirements
4 Test and operating requirement
5 Data bus operation
6 Data form
7 Bit priority
Section C. Transmission Methods
8 Modulation
9 Data Code
10 Transmission bit rate
11 Word size
12 Word Formats
Section D. Word Formats
13 Command words
14 Data word
15 Status word
16 Status word reset
Section E. Message Formats
17 Message formats
18 Bus Controller to Remote Terminal Transfers
19 Remote Terminal to Bus Controller Transfers
20 Remote Terminal to Remote Terminal Transfers
21 Mode command without data word
22 Mode command with data word (transmit)
23 Mode command with data word (receive)
24 Optional broadcast command
25 Intermessage gap
26 Response time
27 Minimum no-response timeout
Section F. Terminal Operation
28 Common operation
29 Bus controller operation
30 Remote Terminal
31 Bus monitor operation
Section G. Data Bus Characteristics
32 Cable
33 Cable stub requirements
34 Transformer Coupled stubs
35 Direct Coupled stubs
Section H. Terminal Characteristics
36 Terminals with transformer coupled stubs
37 Terminal with direct coupled stubs
Section J. Redundant Data Bus Requirements
38 General
39 Electrical isolation
40 Single event failures
41 Dual standby redundant data bus

Defines requirements for command response, digital, time division multiplexing techniques for a 1 MHz serial data bus and also specifies the data bus and its interface electronics. Also defines the concept of operation and information on the multiplex data bus and the electrical and functional formats to be employed.