
@ If the two channels are of the same freque ncy. you can exactly
initiate the triggering with TR IGGER S
OU
RCE switch [2
s1
S
,M
"'
'''IIH'
1
. 1..... 1 \hI1
..
ISVt< ,., 1
..
1
(a) Co mpositive video signal
I
:
,
- '--
(
b)
TV-V coupling
I
I 1
~
m
~
m
.1
III
l1T
II
, II
Ie
(c) TV-H coupling
1
r_
~
r_
T
I
!
,
I
r-
I
1
"-
I
\...
,
f-
-
M
t
'-,
i
I
\I
I
.
,
'I
(d) SYNC polarity
Fig. 2-7.
'TV sinc signal
separation
40
1Il"",1,\'( "'1.AlI T'r
~
_
u.
;
1CJ'o
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