ACR Electronics COBHAM B406-4 Abbreviated Component Maintenance Manual page 23

COBHAM AVIONICS WULFSBERG ELECTRONICS
ABBREVIATED COMPONENT MAINTENANCE MANUAL
SAR
SCREEN ROOM
SERVICE LOOP
TETHER
TNC CONNECTOR
TPS CONNECTOR
TSO
UTC
VHF
VSWR
B406-4 (453-5004)
Search and Rescue
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.
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to allow a component to be withdrawn from its mounting position and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.
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.
A threaded version of a BNC connector.
A small, rugged, three-pin bayonet locking connector designed for
use when space and weight limitations are of primary concern.
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.
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.
Very High Frequency – The 30 MHz to 300 MHz radio frequency band.
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.
25-62-03
Page 23 of 86
APR 06/10