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)： 6/17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
6
V
SCR1
sub-contrast control characteristics and
V
SCR1
relative sub-contrast control characteristics (at typ.)
1. Follow the electrical characteristics table except changing V4,V9
and V14 to 4.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) to let the
reading be V
OR4
(V
OG4
or V
OB4
).
3. Sub-contrast control characteristics V
SCR1
and relative sub-
contrast control characteristics
V
SCR1
are found by
through respective calculation.
V
SCR2
sub-contrast control characteristics and
V
SCR2
relative sub-contrast control characteristics (at min.)
1. Follow the electrical characteristics table except changing V4, V9
and V14 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
OR5
(V
OG5
or V
OB5
). This value represents
V
SCR2.
3. Relative sub-contrast control characteristics
V
SCR2
is found by:
V
SCR2
=V
OR5
/V
OG5
, V
OG5
/V
OB5
, V
OB5
/V
OR5
V
SCR3
contrast and sub-contrast control characteristics and
V
SCR3
relative contrast and sub-contrast control
characteristics (at typ.)
1. Follow the electrical characteristics table except changing V17 to
3.0V, and V4, V9 and V14 to 3.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time,
and let the reading be V
OR
6 (V
OG6
or V
OB6
). This value
represents V
SCR3
.
3. Relative sub-contrast control characteristics
V
SCR3
is found by:
V
SCR3
=V
OR6
/V
OG6
, V
OG6
/V
OB6
, V
OB6
/V
OR6
V
B1
brightness control characteristics and
V
B1
relative brightness characteristics (at max.)
1. The conditions shall be as specified in the electrical
characteristics table.
2. Measure the output of T.P25 (T.P30 or T.P35) at this time with an
ammeter, and let it be V
OR7
(V
OG7
or V
OB7
) to let it be V
B1
,
respectively.
3. For relative control characteristics, further, measure difference
between channels from V
OR7
, V
OG7
or V
OB7
.
V
B2
brightness control characteristics and
V
B2
relative brightness control characteristics (at typ.)
1. The conditions shall be as specified in the electrical
characteristics table.
2. Use an ammeter to measure the output of T.P25 (T.P30 or T.P35)
at this time to let the value be V
OR7
(V
OG7
or V
OB7
). This value
represents V
B2
.
3. For relative brightness control characteristics
V
B2
, further,
calculate difference between channels from V
OR7
, V
OG7
or V
OB7
.
V
B
3 brightness control characteristics and
V
B
3 relative brightness control characteristics (at min.):
1. The conditions shall be as specified in the electrical
characteristics table.
2. Use an ammeter to measure the output of T.P25 (T.P30 or T.P35)
at this time to let the value be V
OR7"
(V
OG7"
or V
OB7"
). This value
represents V
B3
.
3. For relative control characteristics
VB3, further, calculate
difference between channels from V
OR7"
, V
OG7"
or V
OB7".
F
C1
and
F
C1
frequency characteristics 1 and relative
frequency characteristics (f=50MHz at max.) and
F
C1'
and
F
C1'
frequency characteristics 1 and relative
frequency characteristics (f=180MHz at max.)
1. The conditions shall be as specified in the electrical charactristics
table.
2. Whilst SG1 and SG2 are used, input SGA first, apply voltage to
the input pin (pin
resistor so as to provide 2.5V on the lower side of input signal. In
, pin
or pin
) through about 2k
of
addition, apply voltage to the hold pin (pin
ensure that the output wave of T.P25 (T.P30 or T.P35) will not be
jammed so as to allow the lower side of the sine wave, an output
signal to be 2V. Adjust the main contrast voltage (17V) at this
time to allow the output amplitude to be 4.0V
P-P
. Then, change
the input signal to SG1 or SG2 to measure each output
amplitude.
3. Now, when letting this test value be
output amplitude 4.0V
P-P
when SGA is input,
output amplitude V
OR 8
(V
OG8
or V
OB8
)
when SG1 is input, and
output amplitude V
OR9
(V
OG9
or V
OB9
),
frequency characteristics F
C1
or F
C1'
is calculated from:
, pin
or pin
) to
4. For relative frequency bands
F
C1
and
F
C1
', calculate difference
in F
C1
and F
C1
for each channel.
V
SCR1
=20LOG
V
OR4
(
V
OG4
,
V
OB4
) [
V
P-P
]
0.7
[
V
P-P
]
V
SCR1
=V
OR4
/V
OG4
, V
OG4
/V
OB4
, V
OB4
/V
OR4
V
B1
=V
OR7
V
OG7
[V]
=V
OG7
V
OB7
=V
OB7
V
OR7
V
B2
=V
OR7’
V
OG7’
[V]
=V
OG7’
V
OB7’
=V
OB7’
V
OR7’
V
B3
=V
OR7’’
V
OG7’’
[V]
=V
OG7’’
V
OB7’’
=V
OB7’’
V
OR7’’
3
8
13
23
28
33
F
C1
=20LOG
V
OR8
(
V
OG8
,
V
OB8
)
[V
P-P
]
4.0
[V
P-P
]
F
C1
’=20LOG
V
OR9
(
V
OG9
,
V
OB9
)
[V
P-P
]
4.0
[V
P-P
]
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