參數(shù)資料
型號： M52737SP
廠商： Mitsubishi Electric Corporation
英文描述： 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
中文描述： 3，帶OSD混合，折回消隱通道視頻前置放大器
文件頁數(shù)： 5/15頁
文件大?。?/td> 119K
代理商： M52737SP
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
5
Vimax Maximum input
Voltage V17 is changed to 2.5V, and increase the input signal
amplitude gradually, starting from 700mV
P-P
.
Measure the amplitude when the output signal starts becoming
distorted.
Gv Maximum gain
Gv Relative maximum gain
1. Input SG5 to pin 13 (8 or 3), and read the amplitude at output
T.P25 (30 or 35). The amplitude is called V
OR1
(V
OG1
or V
OB1
) .
2. Maximum gain G
V
is calculated by the equation below:
3. Relative maximum gain
G is calculated by the equation below:
G
V
=V
OR1
/V
OG1
, V
OG1
/V
OB1
, V
OB1
/V
OR1
V
CR1
Contrast control characteristics (typical)
V
CR1
Contrast control relative characteristics (typical)
1. Measuring conditions are as given in Supplementary Table.
The setting of V17 is changed to 4V.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called V
OR2
(V
OG2
or V
OB2
).
3. Contrast control characteristics V
CR1
and relative characteristics
V
CR1
are calculated, respectively, by the equations below:
V
CR1
=V
OR2
/V
OG2
, V
OG2
/V
OB2
, V
OB2
/V
OR2
V
CR2
Contrast control characteristics (minimum)
V
CR2
Contrast control relative characteristics (minimum)
1. Set V17 to 1.0V. Other conditions are as given in Supplementary
Table.
2. Measure the amplitude output at T.P25 (30or 35). The measured
value is called V
OR3
(V
OG3
or V
OB3
), and is treated as V
CR2
.
3. Contrast control relative characteristics
V
CR2
are calculated by
the equation below:
V
OR2
=V
OR3
/V
OG3
, V
OG3
/V
OB3
, V
OB3
/V
OR3
V
SCR1
Sub contrast control characteristics (typical)
V
SCR1
Sub contrast control relative characteristics (typical)
1. Set V4, V9 and V14 to 4.0V. Other conditions are as given in
Supplementary Table.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called V
OR4
(V
OG4
or V
OB4
).
3. Sub contrast control characteristics V
SCR1
and relative
characteristics
V
SCR1
are calculated, respectively, by the
equations below:
V
OR4
(V
OG4
, V
OB4
)
V
SCR1
=20LOG
V
SCR1
=V
OR4
/V
OG4
, V
OG4
/V
OB4
, V
OB4
/V
OR4
V
SCR2
Sub contrast control characteristics (minimum)
V
SCR2
Sub contrast control relative characteristics (minimum)
1. Set V4, V9 and V14 to 1.0V. Other conditions are as given in
Supplementary Table.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called V
OR5
(V
OG5
or V
OB5
), and is treated as V
SCR2
.
3. Relative characteristics
V
SCR2
are calculated by the equation
below:
V
SCR2
=V
OR5
/V
OG5
, V
OG5
/V
OB5
, V
OB5/
V
OR5
V
SCR3
Contrast/sub contrast control characteristics (typical)
V
SCR3
Contrast/sub contrast control relative
characteristics (typical)
1. Set V4, V9, V14 and V17 to 3.0V. Other conditions are as given
in Supplementary Table.
2. Measure the amplitude at T.P25 (30 or 35). The measured value
is called V
OR6
(V
OG6
or V
OB6
). and is treated as V
SCR3
.
3. Relative sub contrast control characteristics
V
SCR3
is
V
SCR3
=V
OR6
/V
OG6
, V
OG6
/V
OB6
, V
OB6
/V
OR6
V
B1
Brightness control characteristics (maximum)
V
B1
Brightness control relative characteristics (maximum)
1. Measuring conditions are as given in Supplementary Table.
2. Measure the output at T.P25 (30 or 35) with a voltmeter.
The measured value is called V
OR7
(V
OG7
or V
OB7
), and is treated
as V
B1
.
3. To obtain brightness control relative characteristics, calculate the
difference in the output between the channels, using V
OR7
, V
OG7
and V
OB7
.
V
B1
=V
OR7
-V
OG7
[V]
=V
OG7
-V
OB7
=V
OB7
-V
OR7
V
B2
Brightness control characteristics (typical)
V
B2
Brightness control relative characteristics (typical)
1. Measuring conditions are as given in Supplementary Table.
2. Measure the output at T.P25 (30 or 35) with a voltmeter.
The measured value is called V
OR7'
(V
OG7'
or V
OB7'
), and is
treated as V
B2
.
3. To obtain brightness control relative characteristics (
V
B2
),
calculate the difference in the output between the channels,
using V
OR7'
, V
OG7'
, and V
OB7'
.
V
B2
=V
OR7'
-V
OG7'
[V]
=V
OG7'
-V
OB7'
=V
OB7'
-V
OR7'
V
OR1
(V
OG1
, V
OB1
)
0.7
[V
P-P
]
[V
P-P
]
G
V
=20LOG
V
OR2
(V
OG2
, V
OB2
)
0.7
[V
P-P
]
[V
P-P
]
V
CR1
=20LOG
0.7
[V
P-P
]
[V
P-P
]
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