M52779SP View Datasheet(PDF) - MITSUBISHI ELECTRIC
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M52779SP Datasheet PDF : 37 Pages
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MITSUBISHI ICs (TV)
M52779SP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC
MTXB Matrix 1, MTXG Matrix 2
1. Input SGE to-B IN (pin 44).
2. Measure output amplitude at pins 22 and 23.
(P23=MTXB, P22=MTXG)
MTXR Matrix 3, MTXG1 Matrix 4
1. Input SGE to-R IN (pin 45 ).
2. Measure output amplitude at pins 21 and 22.
(P21=MTXR, P22=MTXG1)
OSD1 OSD speed 1, OSD2 OSD speed 2
1. Input SGD to FB, ER, EG and EB.
2. Measure rise time and fall time of the signal of output at pins 21,
22 and 23. Measurement points should be higher than the
pedestal level and blanking part should not be measured.
90%
FPH1 Horizontal pull-in range 1
FPH2 Horizontal pull-in range 2
Change the frequency of SGc and measure the frequency at the
moment when the output signal at pin 13 and the input signal at pin
39 are pulled in. The horizontal pull-in range is measured by
comparing with 15.625kHz.
HPT1 Horizontal pulse timing 1
HPT2 Horizontal pulse timing 2
HPT3 Horizontal pulse timing 3
HPT2 = Hphase data ( 0 ) - HPT1
HPT3 = Hphase data (15) - HPT1
HPT1, HPT2, HPT3
P39 SYNC
M
OSD1
M
OSD2
10% Output waveform at
pins21, 22 and 23.
GYmax1 Contrast 3, GYmin1 Contrast 4
1. Input SGA to VI IN.
2. Measure output amplitude at pina 21, 22 and 23 when 2.9V and
0V are extemally applied to pin 26.
ISS Sync separation input sensitivity current
Make current flow out from pin 39 and measure the flow current
when the free running frequency (=45Hz) changed at pin 18 .
BGP1 Burst gate pulse timing 1 (PAL)
BGP2 Burst gate pulse timing 2 (NTSC)
BGPW Burst gate pulse width
BGP1,BGP2
P39 SYNC
BGPW
P12 SCP
FH Horizontal free running frequency
Measure the output frequency at pin 13 when no signal is input .
VH
TH
P13 H OUT
TH Horizontal pulse width, VH Horizontal pulse amplitude
HSTO Horizontal pulse stop function
Confirm that the horizontal output is high when the horizontal stop
switch is on.
AFCG AFC gain
1. Measure AFC on which is the output amplitude of pin 16 when
AFC switch is on and AFC off which is that when the switch is off.
2. AFCG is defined as follows:
AFCG=20log
AFCon (VP-P)
AFCoff (VP-P)
(dB)
FV Vertical free running frequency
Measure the output frequency at pin 18 when no signal is input.
SW Service SW operation
Measure the output DC voltage at pin 18 when the service switch
is on.
FPV Vertical pull-in range
Decrease the frequency of SGd and measure the frequency when
output waveform at pin 18 is pulled in.
VW Vertical pulse width (free running)
Measure the output pulse width
at pin 18, when 43kΩ at pin 10
is connected to 8V (VCC).
17
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