SAC —sonar azimuth converter.
SCG —sensor converter group.
SDDS —sensor data distribution switchboard.
SG —symbol generator.
SRAC —synchro radar azimuth converter.
SVGA —super video graphics array.
TDM —tactical DITEG module.
TDS —tactical data system.
TFT —thin film transistor.
TMG —test message generator.
TN —track number.
TQ —track quality.
TSLO —third salvo lock out.
TTL —transistor-transistor logic.
TVC —television converter group.
TVSC —television scan converter.
UHF —ultra-high frequency.
USB —upper side band.
V/C word —velocity/category word.
VDT —video display terminal.
VFK panel —variable function key panel.
VGA —video graphics array.
V-SERIES MESSAGES —Link-4A control
messages sent from the controlling station to
the controlled aircraft.
VSS —video signals simulator.
XGA —extended graphics array.
AI-3
