Inter-Range Instrumentation Group

Standards

Developed by the Inter-Range Instrumentation Group (IRIG), which is part of Range Commanders Council (RCC). The RCC is part of the U.S. Government. I believe the Navy controls a number of test ranges and generate the specifications. Most of the specifications deal with Time Code formats and standards. So the page listing started as an index to IRIG time code formats and standards, and is still growing.. Their specifications and Standards documents are located on there own page.

The IRIG interface is found on many types cards and chassis as a external coax input on a BNC connector.
In addition, there are a number of different IRIG formats.

IRIG 106: Telemetry Standards

The IRIG 106 standard was listed on the web site, but removed because of bandwidth issues.

IRIG 106-00 - Chapter 1; Introduction
IRIG 106-00 - Chapter 2; Transmitter and Receiver Systems
IRIG 106-00 - Chapter 3; Frequency Division Multiplexing Telemetry Standards
IRIG 106-00 - Chapter 4; Pulse Code Modulation Standards [PCM Waveforms]
IRIG 106-00 - Chapter 5; Digitized Audio Telemetry Standard
IRIG 106-00 - Chapter 6; Magnetic Tape Recorder and Reproducer Standards
IRIG 106-00 - Chapter 7; Magnetic Tape Standards
IRIG 106-00 - Chapter 8; MIL-STD-1553 Acquisition Formatting Standard
IRIG 106-00 - Chapter 9; Telemetry Attributes Transfer Standard
RCC 212-00 - ASYNCHRONOUS ASCII TIME CODE FORMATS
RCC 215-916 - ASYNCHRONOUS ASCII EVENT COUNT STATUS CODES

RCC 119-88 - Telemetry Application Handbook
RCC 151-85 - Global Coordinate System
IRIG 168-98 - STANDARD PROTOCOL FOR REAL-TIME COMPUTER TO COMPUTER DATA EXCHANGE
IRIG 154-71 - IRIG Standards for Distributing Raw Radar Antenna Data
IRIG 164-91 - IRIG Standard Format for Global Positioning Systems (GPS) Data for Post-Operation Inter-range Exchange
IRIG 201-87 - Parallel Binary and Parallel Binary Coded Decimal Time Code Formats
IRIG 208-85 - IRIG Standards for UHF Command Systems
RCC 382-94 - A Guide for Quality Control of Surface Meteorological Data

Related Definitions;
Editor note; only those definitions that relate to engineering; most definitions for megnatic recording, time or telemty are not listed. Accuracy. The degree of conformity of a measured or calculated value to its definition with respect to a standard reference.

Atomic time. A time scale based on atomic resonance by counting cycles of a cesium standard.

Drift Frequency. The linear component of the systematic change in frequency over time.

5/6 Modulation Code. A method of encoding whereby a 5-bit data group is converted to a 6-bit code frame in accordance with a conversion table. Such coding is performed to control the frequency content of the data stream.

Bi-Phase. A method of representing "one" or "zero" levels in PCM systems where a level change is forced to occur in every bit period. In bi-phase recording, the bi-phase level (split-phase) method is employed.

Non-Return-to-Zero Level. A binary method of representation for PCM signals where one is represented by one level, and zero is defined as the other level in a bi-level system.

Editor note; A few of these standards reference magnetic recording [on magnetic tape].
However the last date a document was checked dated to 2000, so it could be that disk drives are used to store data now.
Implying that a number of chapters in the reference are out-dated.

Home
Distributors	Components	Equipment	Software	Standards	Buses	Design	Reference