HP 54600B User, Installation And Service Manual page 171

Glossary
Trace Allows access to the trace
storage keys.
Trace Mem (trace memory) One
of two pixel memory locations used
for storing traces.
TV Allows access to the TV slope
and trigger coupling keys.
Vernier Vernier allows a cali-
brated fine adjustment with the
channel 1 and 2 Volts/Div knob, and
the time base Time/Div knob.
Voltage Allows access to the auto-
matic voltage measurement keys.
Volts/Div Changes the vertical
scaling in a 1-2-5 step sequence from
2 mV to 5 V.
XY Changes the display to a volts
versus volts display.
Glossary–4
TV/Video Trigger Terms
Blanking Level The level of the
composite picture signal that
separates the range containing
picture information from the range
containing synchronizing
information. (IEEE Definition)
Chrominance That property of
light which produces a sensation of
color in the human eye apart from
any variation in luminance that may
be present.
Chrominance Signal That por-
tion of the color television signal
which contains the color informa-
tion. (STOC Definition)
Color Burst In color systems, this
normally refers to a burst of subcar-
rier frequency (8 to 10 cycles of
3.579545 MHz in NTSC systems) on
the back porch of the composite
video signal used to establish a fre-
quency and phase reference for the
chrominance signal.
Composite Sync The line and
field rate synchronizing pulses
(including the field equalizing
pulses), when combined together,
form the composite sync signal.