M52722 Mitsubishi, M52722 Datasheet - Page 7

• Manufacturer Part Number: M52722
• Description: 3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION
• Manufacturer: Mitsubishi

F
frequency characteristics 2 (f=180MHz at typ.)
The same as for F
main contrast voltage (V17) and allowing the amplitude of output
signal when SGA is input to be 1.0V
C.T.1 crosstalk 1 (f=50MHz) and
C.T.1' crosstalk 1 (f=180MHz)
1. The conditions shall be as specified in the electrical
2. Input SG1 (or SG2) to pin
3. Crosstalk C.T.1 (C.T.1')
C.T.2 crosstalk 2 (f=50MHz) and
C.T.2' corsstalk 2 (f=180MHz)
1. Change the input pin to pin
2. Crosstalk C.T.2 (C.T.2') is found by:
C.T.3 crosstalk 3(f=50MHz) and
C.T.3' crosstalk 3(f=180MHz)
1. Change the input pin to pin
2. Crosstalk C.T.3 (C.T.3') is found by:
Tr, and Tf, Pulse characteristics 1 and pulse characteristics 2
1. The conditions shall be as specified in the electrical
2. Use an active probe to measure rise Tr1 and fall Tf1 at 10% to
3. Then, use an active probe to measure rise Tr2 and fall Tf2 at 10%
7
C2
characteristics. (Set the input pin and hold pin as in the case of
F
waveform amplitude of T.P25 (T.P30 or T.P35) to be V
V
the case of C.T.1 or C.T.1'.
the case of C.T.1 or C.T.1'.
characteristics table. Adjust the main contrast voltage (V17) and
brightness voltage (V19), and allow the output signal amplitude
to be 4.0Vp-p, and the black level 2.0V.
90% of input pulse.
to 90% of output pulse.
and F
C1
OB
C.T.2=20log
(C.T.2’)
C.T.1=20log
(C.T.1’)
C.T.3=20log
(C.T.2’)
,
.
FC1
C2
, F
frequency characteristics 2 and relative
C1'
and F
C1
V
V
V
, F
OG
OR
OR
or V
or V
or V
C1'
C1
V
V
V
OG
OR
OB
)
and F
OB
OB
OG
13
8
3
[V
[V
[V
(G-ch), and read the output as in
[V
(B-ch), and read the output as in
[V
[V
(R-ch) only, measure the output
C1'
P-P
P-P
P-P
P-P
P-P
P-P
P-P
.
]
]
applies except adjusting the
]
]
]
]
[dB]
[dB]
[dB]
3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX
OR
, V
OG
or
AND RETRACE LINE BLK FOR HIGH-RESOLUTION
4. Pulse characteristics Tr and Tf:
V14th clamping pulse threshold voltage
1. The conditions shall be as specified in the electrical characteristic
2. Gradually reduce SG4 level at this time, while monitoring the
W14 minimum clamping pulse operation width
Gradually reduce SG4 pulse width, and measure SG4 pulse width
(1.5V from GND) when the pedestal voltage of output signal is not
stabilized and starts to fall.
P
and pedestal voltage temperature characteristics 2
1. The conditions shall be as specified in the electrical
2. Measure pedestal voltage at room temperature to let the value be
3. Then, measure pedestal voltage at -20˚C and 85˚C to let the
4. P
OTr and OTf, OSD pulse characteristics 1 and OSD pulse
characteristics 2
1. The conditions shall be as specified in the electrical
2. Use an active probe to measure rise OTr1 and fall OTf1 at 10% to
3. Use an active probe to measure rise OTtr2 and fall OTf2 at 10%
4. OSD pulse characteristics OTr and OTf are found by:
DCH
table.
output signal (pedestal voltage: about 1.8V), and measure SG4
top level when the pedestal voltage of output signal is not
stabilized and starts to fall.
characteristics table.
P
value be P
characteristics table. Adjust main OSD adjustment voltage (V36)
and brightness voltage (V19) to allow output signal amplitude to
become 3.0Vp-p, and black level 2.0.
90% of input pulse.
to 90% of output pulse.
P
DCH
Tr (nsec) =
Tf (nsec) =
DC
OTr (nsec) =
OTf (nsec) =
DCL
and P
1.
=P
=P
DC1
DC1
DCL
DC2
-P
0%
-P
DC2
, pedestal voltage temperature characteristics 1
DC3
100%
or P
(Tr2)
(Tf2)
(OTr2)
(OTf2)
DC3
Tr1
Tr2
or
2
2
.
- (Tr1)
- (Tf1)
2
2
MITSUBISHI ICs (Monitor)
- (OTr1)
- (OTf1)
2
2
2
2
M52722SP
Tf1
Tf2
or
90%
10%