Specifications

TV
Tfiggef
Video
signals
are unique, and as such
have
unique
requirements
for
Exercise
Sffi.ffiffiff""ffi?:ffi:
""*howtodispravandwork
Instrument
Setup
Use
a standard
NTSC signal
generator
with
clamped video
output for
this
exercise. Turn
color bars on.
Oscilloscope
Setup Connect
the
NTSC video
signal to channel
1of
the
I{P
545104.
o
PTessAUTOSCALE"
o
Select the
tv trigger
mode.
r
Set 60Hzli2ilines and
channel
l
as the
souroe.
Determine
the
polarity
of the sync
pulse.
o
Select the
trigger
level
and
rotate
the knob
until
a stable display
is
attained.
When
a slmc
pulse
is visible,
determine
the
polarity,
select
polarity (press
the
function key)
and
set the spc
pulse
in
acdordance
with
the actual
pulse.
r
Set the trigger
level at approximately
the
midpoint
of
the sync
pulse.
This
sets the
trigger
level
just
below
the middle
of the
slmc
pulse
and tells
the
oscilloscope to trigger on the
lsading
edge.
o
Set trig'd/auto to
trig'd.
This
eliminates
the
possibility
of a
premature
trigger event
occurring.
o
Select
field I and
line 1.
o
Press TIMEBASE and set time/division
to
100rrs/div.
HP
54510A
Front-Panel
Reference
Trigger
Menu
429