Technical Information
The CM-11
is
designed
for
connection
to
a non-interlaced 225-line signal, 15.701
kHz
scanning frequency. When the CM-11
is
connected
to
a
computer
with
other
than the
specified
input
signal,
distortion
in the display image, shape, and
position
may
be
due
to
the inadequate
input
signal
of
some computers. The
following
chart illustrates
such conditions.
Symptom
Shrunken screen
Expanded screen
Image
to
left
or
right
Moving screen
Dark screen
Input
Signal
Video Signal
Cause
Data display period
is
too
short.
Data display period
is
too
long.
Data display period
is
out
of
alignment.
Synchronization period
is
different.
Front
and back porch
of
video signal
is
missing.
Horizontal Sync. Vertical Sync.
RGB and Intensity Separate
TTL-Positive
TTL-Positive
TTL-Positive
Timing Chart
Video~
I
I
fH
= 15.701
kHz
J7_J____J__n_
Horizontal
H-sync.
4.•69&
7
_aii
44.698
I
5_70,14
(SCH) (14CHJ
ISOCHI
(12CHJI
6J.69
1114CHI
(unit:
µs)
I
Video~
I
I
I
fV=60Hz
Vertical
~
V-sync.
IQ_19111.5t2
14.ll
IQ_57l
,1
I
~
~1
I"
•(3HJ(25H)
1225HI
19Hl
1
I
16.888
1262H)
(unit:
ms)
9
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