User's Manual

11.0 Glossary of Terms

ARINC Aeronautical Radio, Inc. Maintains standards for line-replaceable units in a

aviation, defense, government, healthcare and other industries.

ASI Asynchronous Serial Interface.

B-Frame Contains difference information from the preceding and following I- or P-

frame within a GOP

COFDM Coded Orthogonal Frequency Division Multiplexing

DVB-T Digital Video Broadcast - Terrestrial

ETSI European Telecommunications Standards Institute

FEC Forward Error Correction.

GOP A group of successive pictures within a coded video stream. It may be made

up of I frames only, I and B frames, or I, B, and P frames.

Guard Interval An interval between transmissions to prevent data loss and reduce

interference.

H.264 Synonymous with MPEG4, H.264 is an Advanced Video Coding standard

providing high quality at lower bit rates than MPEG-2 / H.263.

HD High Definition Television

I-Frame A fixed image and which is independent of other picture types

P-Frame Predictive frame; contains motion-compensated difference information from

the preceding frame

PID 13-bit packet ID used to identify an elementary stream in an MPEG

transport stream

QAM Quadrature Amplitude Modulation (16QAM or 64 QAM)

QPSK Quadrature Phase Shift Keying

RF Radio Frequency

RS232 Recommended Standard 232 is a serial binary single-ended data and

control standard for serial ports.

SD Standard Definition refers digital video resolution not exceeding 480 lines in

an interlaced format. The aspect ratio may be 4:3 or 16:9.

SDI Serial Digital Interface, eg. SMPTE 259M standard