MIL-STD-188-212 Base Document:1992

Promulgation sheet
Foreword
Identification of international
Standardization agreement
1 SCOPE
1.1 Purpose
1.2 Application
1.3 Objectives
1.4 System standards and design objectives
2 REFERENCED DOCUMENTS
2.1 Issues of documents
2.1.1 Federal standard
2.1.2 Military standards
2.1.2.1 Department of Defense (DoD) standards
2.1.2.2 North atlantic treaty organization (NATO)
           Standardization agreement (STANAG)
2.1.3 Military handbooks
2.2 Other publications
2.2.1 DoD publications
3 DEFINITIONS
3.1 Definition of terms
3.2 Abbreviations and acronyms
4 GENERAL REQUIREMENTS
4.1 NATO interoperability
4.2 Communications security equipment
4.3 Compromising emanations (TEMPEST)
4.4 Electromagnetic interference (EMI) and electromagnetic
           compatibility (EMC)
4.4.1 Equipment
4.4.2 Subsystems and systems
4.5 Electronic warfare (EW) requirements
4.6 Grounding, bonding and shielding
4.7 Clock equipment, timing, control and alarm
5 DETAILED REQUIREMENTS
5.1 General
5.2 Terminal subsystem characteristics
5.2.1 Transmission frame format
5.2.1.1 Start group
5.2.1.2 Data group
5.2.1.3 Check group
5.2.1.4 Message format
5.2.2 Standby signal
5.2.3 Data signaling rates
5.2.4 Data signaling rate tolerance
5.2.5 Modem characteristics
5.2.5.1 Basic characteristics for 1200 b/s
5.2.5.2 Basic characteristics for 2500 b/s
5.2.6 Receiver synchronization
5.2.7 Terminal subsystem BER
5.2.8 Interface characteristics
5.2.8.1 Digital equipment interface characteristics
5.2.8.1.1 Electrical characteristics
5.2.8.1.2 Data signal connection
5.2.8.2 VF channel interface characteristics
5.2.8.2.1 Impedance
5.2.8.2.2 Quasi-analog signal levels
5.2.8.2.3 Data signal connection
5.2.8.3 Digital channel interface characteristics
5.2.8.3.1 Electrical characteristics
5.2.8.3.2 Data signal connection
5.3 Transmission subsystem characteristics
5.3.1 Types of tactical subsystems
5.3.1.1 Tactical subsystem type I
5.3.1.2 Tactical subsystem type II
5.3.1.3 Tactical subsystem type III
5.3.1.4 Tactical subsystem type IV
5.3.2 VF channel characteristics
5.3.2.1 Input/output characteristics
5.3.2.1.1 Standard test signal
5.3.2.1.2 Standard test tone
5.3.2.1.3 Data signal connection
5.3.2.1.4 Impedance
5.3.2.1.5 Quasi-analog signal levels
5.3.2.1.6 Channel noise power
5.3.2.1.7 Signal-to-noise ratio (SNR)
5.3.2.1.8 Signal tone interference
5.3.2.1.9 Frequency displacement
5.3.2.2 Transfer function characteristics
5.3.2.2.1 Transmission subsystem BER
5.3.2.2.2 Character-count and bit-count integrity
5.3.2.2.3 Insertion loss
5.3.2.2.4 Net loss variation
5.3.2.2.5 Insertion loss versus frequency characteristics
5.3.2.2.6 Envelope delay distortion
5.3.2.2.7 Total harmonic distortion
5.3.2.2.8 Intermodulation distortion (IMD)
5.3.2.3 Signal discontinuities
5.3.2.3.1 Impulse noise
5.3.2.3.2 Signal level dropouts
5.3.2.3.3 Signal level change
5.3.2.3.4 Phase jitter
5.3.2.3.5 Phase hits
5.3.2.3.6 Amplitude (or gain) hits
5.3.2.4 Equalization and regeneration
5.3.2.5 Special method for interconnecting VF channels
           of the tactical subsystems type I or III with
           type II
3.3.3 Digital channel characteristics
5.3.3.1 Transmission subsystem BFR
5.3.3.2 Character-count and bit-count integrity
5.3.3.3 Electrical characteristics
5.3.3.4 Data signal connection
5.3.3.5 Regeneration
FIGURES
1 Block diagram of TADIL B system
2 TADIL B transmission frame
3 VF channel parameters for data transmission
           with modulation rates of 1200 Bd or less
4 Signal level and interface diagram for connecting
           VF channels of tactical subsystems type I or type II
           with type II
TABLES
I TADIL B transmission frame format
II TADIL B check group/data group relationship
III Switched multichannel communications subsystems
IV Insertion loss versus frequency characteristic of
           VF channels for data transmission with modulation
           rates of 1200 Bd or less
V Envelope delay distortion of VF channels for data
           transmission with modulation rates of 1200 Bd or less
APPENDIX
           List of abbreviations and acronyms used

Gives technical standards and design objectives that are necessary to ensure interoperability and to promote commonality for communications equipment and subsystems that are used in TADIL B. This document also establishes acceptable overall subsystem performance and maximum flexibility of subsystems layout in order to satisfy user requirements without the restrictions caused by interface and incompatibility problems.

The purpose of this document is to establish technical standards and design objectives that are necessary to ensure interoperability and to promote commonality for communications equipment and subsystems used in TADIL B.