ACR&Artex G406-4 ELT User Manual

Page 23

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25-62-21

Page 23 of 86

JUL 31/12

ACR ELECTRONICS, INC / ARTEX PRODUCTS

DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL

G406-4 (453-5012)

SAR

Search and Rescue

SCREEN ROOM

The term “Screen Room”, within the context of this document, refers

to a room designed to suppress RF signals, such that the broadcast of

an ELT placed in the screen room cannot reach the SAR satellite sys-

tem.

SERVICE LOOP

A length of wire or cable, at the connection point, of sufficient length

to allow a component to be withdrawn from its mounting position and

disconnected from its associated wiring.

TETHER

A tether is a cord or similar device that anchors something movable

to a stationary point or anchors two items together, such that they

cannot become separated beyond the length of the tether.

TNC CONNECTOR

A threaded version of a BNC connector.

TPS CONNECTOR

A small, rugged, three-pin bayonet locking connector designed for

use when space and weight limitations are of primary concern.

TSO

Technical Standard Order – A TSO is a minimum performance stan-

dard issued by the FAA for specified materials, parts, processes, and

appliances used on civil aircraft.

UTC

Coordinated Universal Time – A time standard based on International

Atomic Time. UTC is the time system used in aviation and is often

associated with Greenwich Mean Time (GMT) and/or “Zulu” time.

VHF

Very High Frequency – The 30 MHz to 300 MHz radio frequency band.

VSWR

Voltage Standing Wave Ratio – Electrical signals will “echo” back on a

wire if load impedance is not matched to the impedance of the wire.

VSWR is a measurement of the amount of voltage being “echoed,”

compared to the original signal.

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