Glossary
G-2 1760Series Component Waveform/VectorMonito r User Manual
Black Burst (PAL) Also called “colorblack,”blac k
burst is a composite video signal consisting of all horizontal
and vertical synchronization informati on and burst. Typical-
ly used as the house reference synchronization signal in t ele-
vision facilities.
Blanking Level Refers to the 0 IRE level for NTSC sys-
tems (0.3 volt level, with respect to sync ti p, for PALsys-
tems) which exists before and after horizontal sync a nd
during the verticalinterval.
Breezeway The portion of the video signal which lies
between the trailingedge of the horizontal sync pulse and
the start of burst. Breezeway is part of back porch.
Broad Pulses Another name for the vertic al synchroniz-
ing pulses in the center of the vertical interval. T hese pulses
are long enough to be distinguished from all others, and a re
the part of the signal actually dete cted by vertical sync sepa-
rators.
Bruch Blanking (PAL) A 4-fiel d burst blanking se-
quence employed in PAL signals to ensure that burst phase is
the same at the endof each vertical interval.
Burst (NTSC) A small reference packet of the subcarrier
sine wave, typically 8 or 9 cycles, which is sent on eve ry line
of video. Since the carrier is suppressed, this phase and fre-
quency reference is required for synchronous dem odulation
of the color informationin the receiver.
Burst (PAL) A small referenc e packet of the subcarrier
sine wave sent during the horizontal blanking interval on
every line of video. Since the carrier is suppressed, this
phase and frequency reference is required for synchronous
demodulation of the color difference signals in the receiver.
B--Y(NTSC) One of the color difference signal sused in
the NTSC system,obtained by subtracting luminance from
the blue camera signal. This is the signal which drives the
horizontal axis of a vectorscope.