6-1. Digital Kit
(1) Summary
By mounting the DK301 (Dl), DK302N (D2-NTSC},
or DK302P (D2-PAL ) digital kit, digital signals
can
be directly monitored on the monitor, so a highly
faithful video can be reproduced without the
distortion generated up till now in analog
transmission.
(2) Features
1} Since a 10-bit D/A converter is used, both 10-bit
and 8-bit syst ems can be used.
2) Since the post filter is an
x/sin x compeOBation
filter conforming to CCIR REC 601, faithful
digital/analog conversion
is possible.
3) Input/ Output
Serial input
2 systems
Serial output 1 system (MONITOR OUT)
Parallel input 1 system
Serial input
can be transmitted with cable equaliza-
tion up to 200 meters (for 5C2V coaxial cable).
4) This monitor detects whether the input signals
are 525 lines (60 Hz) or
625 lines (50 Hz) and
automatic ally swit ches the deflection system
(screen size, hold), for a D1 system not needing
a decoder board, both types of signal scan be
monitored easily.
(3) Configuration
The digital kits comprise the following three boards
and are structured so that each can be installed
simply.
a) Sub power board (SP301}
b) D input board (Dl301)
c) Dl or D2 board (DP301 or DP302N or DP302P)
When installing
a digita l kit, the Dl and D2 (D3)
system can be changed by simply replacing the c)
boa rd inserted into Slot 5 of Fig. 6.
SLOT 3
rh
SLOT 5
i
Fig. 6 Right Surface Slot Board Section
6-2. Various Decoder Boards
(1) Summary
A decoder boa.rd is mount ed in the three locations
of Slot 3 of Fig.
6 to hand.le up to all three formats
NTSC/PAL /SECAM with automatic switching.
(2) Configuration
Combinations of up to three decoder boards can be
used , so the range of combination is
as follows.
DE303 and DE305 cannot be combined.
Decoder Number of boards
DE301(NTSC) 2
.DE302(P
AL-B) 1
DE303(P AL/SEC AM) 1
DE304(P
AL-M)
1
DE305(FAROUDJA)
2
6-3. •Faroudja Comb Decoder Board (only NTSC}
*Under license from Faroud ja Laborato ries
(1) Summary
Since the Far ouclja comb decoder board (DE305)
uses
a 3-line comb filter for NTSC Y /C separation,
the picture can
be reproduced with high picture
quality
and extremely low cross-color and cross-
luminance .
(2) Features
1) *V. logic circuit
This circuit uses
a 3-line comb filter to eliminate
the cross-luminance on
a line with no vertica l
relationship .
2) *H. logic circuit
This circuit eliminates the
croBB-luminance in the
horizontal directio n color transient .
3) *Chroma enhancer circuit
This circuit realizes a pseudo-broadband demodula-
tion circuit with no ringin g,
(3) Configuration
The set
can be inst alled by just inserting the board
into
a blank spot in Slot 3 of Fig. 6.
]
··1
' ·1
"l
•....
,··· .•. )
. .
_j
·]
Since this board compri ses two boards, if the NTSC ··
decoder board (DE301) is already installed, repla ce '._J
it.
. )
J
'.··.1
- 50 -
'j
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