Videotek TVM9100PKG Installation And Operation Handbook page 277

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D/A Conversion of digital to analog signals.
DA Distribution Amplifier
Data Element An item of data as represented before encoding and after decoding.
Decoded Stream The decoded reconstruction of a compressed bit stream.
Decibel (dB) A logarithmic measure of the ratio between two powers, voltages,
currents, sound intensities, etc. Signal-to-noise ratios are expressed in decibels.
Default A factory preset value or condition.
Demodulator A receiver, such as for television broadcast, cable, and closed circuit
applications. A TV demodulator receives and processes off-air or cable RF signals and
provides baseband video and audio outputs.
DHCP Dynamic Host Configuration Protocol
Differential Gain A measurement that specifies how much the chrominance gain is
affected by the luminance level. Expressed as a percentage showing the largest
amplitude change between any two levels, it indicates how much color saturation
variance occurs when the luminance level changes.
Differential Phase A peak-to-peak measurement that specifies the extent to which
the chrominance phase is affected by the luminance level. Expressed in degrees of
subcarrier phase, it indicates how much hue shift occurs with luminance level changes.
Digital Video Broadcasting (DVB) A specific project office of the European
Broadcast Union. This group has produced a set of digital broadcasting standards.
DSK Down Stream Key, a keyer which is electronically located after (or down stream
from) all other functions of a switcher. The key resulting will appear to be on top of all
other pictures from the switcher.
D-VITC Digital Vertical Interval Time Code. Timecode information stored on specific
lines in the vertical blanking interval of a television signal.
Display In the TVM series, the output at the Front LCD or XGA/DVI connector.
EAV End of Active Video in component digital systems.
EBU European Broadcasting Union
Editor A device or system which controls video tape recorders, video switchers, and
other related devices in order to electronically splice segments of recorded video into a
finished production.
EDH Error Detection and Handling. A recommended practice defined in SMPTE RP
165. A system to generate and then detect video data errors in serial digital video
systems.
Effects Keyer A keyer which is electronically located in the mix/wipe generator
portion of a switcher. The resulting key would appear under the down stream key.
EIA Rack Space or Unit A specific size as designated by the Electronics Industry
Association. The rack unit is 19 inches wide and is 1.75 inches tall. A device which
requires 3 EIA rack units is 19 inches wide and 5.25 inches (3×1.75 = 5.25) tall.
TVM Series Installation and Operation Handbook 253
Copyright © 2008, Harris Corporation