Panasonic AGDVX100 - DV CAMCORDER Mise en place - Page 42
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systems today, and when used, is usually accompanied by sub carrier.
T
Tape A medium capable of storing an electronic signal and consisting of backing, binder,
and iron oxide coating. The orientation of the iron oxide determines whether the tape can
be used for helical scan video recording.
Tape Guides Guides that are replaced on a VTR that make sure the tape stays within the
correct path from the supply reel to the take up reel.
Test Signals Signals such as color bars, stair step, multiburst and cross hatch that are
used in the setting up and checking out of a VTR.
Time Code - A labeling system that is used to identify a specific frame of videotape. It can
be an audio signal recorded on Track 2 or a video signal that is recorded in the vertical
interval of a tape.
Time Code Editing By recording a sequential time code along with the video and audio
material, you can obtain a more precise reference for editing. Each frame has its own
number or code, which tells the time in hours, minutes, and seconds, and includes a frame
number. The world standard code is called SMPTE (Society of Motion Picture and Televi-
sion Engineers) and has also been adopted by the IEC (International Elecrotechnical Com-
mission). Time codes permit very fast and accurate editing. Automatic editing is possible
under computer control.
Tripod A three-legged stand on top of which a camera is mounted
Tripod Head The top portion of a tripod where its legs meet and the camera is mounted;
friction or fluid-head tripod designs are available.
U
UL - Underwriters Laboratory.
Underwriters Laboratory (UL) A non-profit safety organization in the U.S. that inspects
and certifies the products sold in the U.S. for their safety standards.
V
VCR - Video Cassette Recorder.
VITC - Vertical Interval Time code
VTR Video tape recorder
Vertical Interval That portion of the video signal that includes the vertical blanking, the
vertical sync pulses and the pre and post-equalizing pulses. It is also the area where other
information that is carried with the television signal, such as captioning and satellite in-
structions, are inserted.
Vertical Scan The action of the electron beam sweeping across the entire face of the dis-
play.
Video Level A measurement of the video level or luminance level of the video signal. The
video level should not exceed 100 IRE units.
W
Watt Is a unit of measurement of power.
WFM (WAVEFORM MONITOR) - A type of oscilloscope that is used to display the lumi-
nance, chrominance and timing diagrams of the video signal.
White Balance A method of setting a camera for the correct color temperature.
X
Y
Y Signal The luminance portion of the color signal.
Z
Zoom Lens A lens with a variable focal length. Which allows you to adjust the size of the
image on a screen by adjusting the zoom lens.
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