m52749fp Mitsumi Electronics, Corp., m52749fp Datasheet - Page 14
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m52749fp
Manufacturer Part Number
m52749fp
Description
Bus Controlled 3ch Video Pre-amp For Crt Display Monitor
Manufacturer
Mitsumi Electronics, Corp.
Datasheet
1.M52749FP.pdf
(25 pages)
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Note43) Control the main contrast (00H) in order that the amplitude of output signal is 3.0Vp-p.
Note44) Measure the time needed for the input pulseto fall from 90% to 10% (Tf1) and for the output
Note45) Turn down the SG5 input level gradually from 5.0Vp-p, monitoring the waveform output.
Note46) Decrease the SG5 pulse width gradually from 0.5us, monitoring the output. Measure the SG5
Control the brightness (V34) in order that the Black level of output signal is 2.0V.
Measure the time needed for the input pulse to rise from 10% to 90% (Tr1) and for the output
pulse to rise from 10% to 90% (Tr2) with an active probe.
Pulse characteristics Tr is calculated by the equations below :
pulse to fall from 90% to 10% (Tf2) with an active probe.
Pulse characteristics Tf is calculated by the equations below :
Measure thetop level of input pulse when the output pedestal voltage turn decrease with unstable.
pulse width (a point of 1.5V) when the output pedestal voltage turndecrease with unstable.
Tr=
Tr=
0
%
100
%
(Tr2)-(Tr1)
(Tf2)-(Tf1)
Tr1
or
Tr2
2
2
MITSUBISHI
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
2
2
(nsec)
(nsec)
Tf1
or
Tf2
90
10
%
%
MITSUBISHI< LINEAR IC >
M52749FP
14
25