HP HP 54600B, User'S And Service Manual

Page: 173 / 183

Line In TV trigger mode, the oscil-
loscope triggers on the TV line sync
pulses. As a trigger source, the oscil-
loscope triggers off of the power line
frequency.
Luminance The amount of light
intensity, which is perceived by the
eye as brightness (referred to as "Y")
Main Sets the oscilloscope to a
volts vs time display that displays
the main time base sweep.
Mode Allows you to select one of
five trigger modes, Auto level, Auto,
Normal, Single, TV.
Noise Rej (noise reject) De-
creases the trigger sensitivity to
reduce the triggering on signal noise.
NTSC National Television
Systems Committee. An industry-
wide engineering group which,
during 1950-1953, developed the
color television specifications now es-
tablished in the United States,
Canada, Japan, and Mexico. A 525
line, 60 Hz field, 4.2 MHz system.
Two frames (4 fields) for picture
completion.
PAL Phase Alternating Line or
Phase Alteration Line rate. Color
television standards used in Europe.
A 625 line, 50 Hz field system. Eight
fields for picture completion.
PAL-M Phase Alternating Line or
Phase Alteration Line rate. A version
of the European system adapted to
a 525 line, 60 Hz field, 4.2 MHz band-
width used in Brazil.
SECAM SEquentiel Couleur Avec
Memoire. An acronym derived from
the French phrase meaning Sequen-
tial Color with Memory. Color
television specifications used primar-
ily in France and the former Soviet
Union. A 625 line, 50 Hz field, wide
bandwidth system. Two frames (4
fields) required for
picture completion
Sync An abbreviation for the
words "synchronization," "synchroniz-
ing," etc. Applies to the
synchronization signals, or timing
pulses, which lock the electron beam
of the picture monitors in step, both
horizontally and vertically, with the
electron beam of the pickup tube.
The color sync signal (NTSC) is
known as the color burst.
Glossary
Glossary–6