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參數(shù)資料
| 型號： | M52722 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION |
| 中文描述： | 3通道視頻前置放大器帶OSD提供的混合并回朔線座的高分辨率 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 125K |
| 代理商： | M52722 |
MITSUBISHI ICs (Monitor)
M52722SP
3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX
AND RETRACE LINE BLK FOR HIGH-RESOLUTION
5
ELECTRICAL CHARACTERISTICS
(cont.)
ELECTRICAL CHARACTERISTICS TEST METHOD
Note: SW/NO of signal input pin and SW/NO of pulse input pin,
which have already been described in the electrical characteristics
table, are omitted, and SW/NO of external power supply will only be
described as follows:
Sub-OSD adjustment voltages, V32, V27 and V22, which are
always set to the identical value, are represented by V32 in the
electrical characteristics table. In addition, sub-contrast voltages,
V4, V9 and V14, which are also set to the identical value, are
represented by V4 in the electrical characteristics table.
Icc circuit current
Conditions shall be as specified in the electrical characteristics
table, and take measurements with ammeter A when SWA is turned
to the b side.
Vomax output dynamic range
Follow the following procedure to set V19.
1. Input SG5 to pin
read the lower part voltage when the lower part of input
waveform of T.P25 (T.P30 or T.P35) is distorted to let the reading
be V
OLR
(V
OLG
or V
OLB
).
2. Then, gradually raise V19, and read the upper part voltage when
the upper part of output waveform of T.P25 (T.P30 or T.P35) is
distorted to let the reading be V
OHR
(V
OHG
or V
OHB
).
3. Vomax is found by:
Vomax=V
OHR
(V
OHG
, V
OHB
)-V
OLR
(V
OLG
, V
OLB
)
(pin
or pin
), gradually reduce V19, and
Vimax maximum allowable input
Change V17 to 2.5V, gradually increase input signal amplitude from
700m V
P-P
, and read input signal amplitude when output signal
starts to be distorted.
Gv and
Gv maximum gain and relative maximum gain
1. Input SG5 to pin
(pin
amplitude of T.P25 (T.P30 or T.P35) at this time to let the reading
be V
OR1
(V
OG1
or V
OB1
).
2. Maximum gain Gv is found by:
or pin
), and read the output
3. Relative maximum gain
G is found by
G
V
=V
OR1
/V
OG1
, V
OG1
/V
OB1
, V
OB1
/V
OR1
through respective calculation.
V
CR1
contrast control characteristics and
V
CR1
relative contrast control characteristics (at typ.)
1. Follow the electrical characteristics table except changing V17 to
4V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time,
and let the reading be V
OR2
(V
OG2
or V
OB2
).
3. Contrast control characteristics VCR1 and relative contrast
control characteristics
VCR1 is found by
through respective calculation.
V
CR2
contrast control characteristics and
V
CR2
relative contrast control characteristics (at min.)
1. Follow the electrical characteristics table except changing V17 to
1.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time
to let the reading be V
OR3
(V
OG3
or V
OB3
). This value represents
V
CR2
.
3. Relative contrast control characteristics
V
CR2
is found by:
V
OR2
= V
OR3
/ V
OG3
,V
OG3
/ V
OB3
/ ,V
OB3
/V
OR3
Symbol
Parameter
Test
point
Input
SW8
G-ch
a
_
a
_
a
_
a
_
External power supply(v)
Pulse input
SW1
5,10,15
SW20
Min. Typ. Max.
b
SG6
_
b
SG6
_
a
_
SG7
a
_
SG7
Limits
Unit
SW3
R-ch
a
_
a
_
a
_
a
_
SW13
B-ch
a
_
a
_
a
_
a
_
V4
V17
V19
V32
V36 SW18
SOaj1
SUB OSD adjustment control
characteristics (at typ.)
T.P35
T.P30
T.P25
T.P35
T.P30
T.P25
T.P35
T.P30
T.P25
T.P35
T.P30
T.P25
5
5
2
2
5
b
SG4
b
SG4
a
_
a
_
a
1.6
2.2
2.6
V
P-P
SOaj2
SUB OSD adjustment control
characteristics (at min.)
5
5
2
0
5
a
-
0
0.5
V
P-P
H
BLK
Retrace line BLK characteris-
tics
5
5
2
0
0
b
-
0.2
0.5
V
DC
HVth
Retrace line BLK input
threshold value
5
5
2
0
0
b
0.5
1.5
2.5
V
DC
13
8
3
0.0
5.0
(V)
T.P25 output waveform (T.P30 and T.P35 are also the same)
13
8
3
G
V
=20LOG
V
OR1
(
V
OG1
,
V
OB1
) [
V
P-P
]
0.7
[
V
P-P
]
V
CR1
=20LOG
V
OR2
(
V
OG2
,
V
OB2
) [
V
P-P
]
0.7
[
V
P-P
]
V
CR1
=V
OR1
/V
OG1
, V
OG1
/V
OB1
, V
OB1
/V
OR1
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