TB1261F/TB1262F
2002-6-30 46 / 66
Note
Items/Symbols
Bus
Bus conditions
conditions
Measurement methods
Y11
VSM Phase
/ TVMFP
/ TVM2T
RGB Mute:0
VSM gain:7
Ysm Mode:0
Uni-color : 127
Sharpness :
Variable
Others: Preset
(1) Input 700mV(p-p) FVSM 2T pulse to pin61 (Y in).
(2) Set the BUS data of contrast to the maximum and increase
the BUS data of Sharpness from the minimum to a value
where pin14 (B OUT) waveform is not distorted.
(3) Measure the phase difference between the timing at the
center level of pin18(B OUT) and the timing at peak level of
pin18(VSM OUT) which responses the pin61 input., that is
TVMFP.
(4) In case that pin61 input signal is 2T pulse, the phase
difference is TVM2T
#12(R-OUT)
#18(SVM-OUT)
Tvm2t(0)
Tvm2t(1)
Y12
VSM Ys Mute
Threshold Voltage
/ VVMMBLK
RGB Mute:0
VSM gain:3
Others: Preset
(1) Input 100mV(p-p) FVSM sine wave signal (see Y9) to pin61(Y
in).
(2) Apply dc voltage for pin15(Ysm) and increase the voltage
from 0V. Measure the power supply voltage when pin18(VSM
OUT) output disappears, that is VVMMBLK.
UV1
Tint control range
/ ΔθMAX
/ ΔθMIN
RGB Mute:0
Tint:0/64/127
Y Mute:1
contrast:127
Others: Preset
(1) Input a 4.43MHz PAL rainbow color-bar (burst:chroma=1:1)
with sync into Pin61
(2) Set Tint to 64 and adjust the burst phase so that the 6th bar
of Pin14 output is maximum, that is θCEN.
(3) Change Tint to 127/0 and adjust the burst phase so that the
6th bar of Pin20 output is maximum, that is θMAX /θMIN.
(4) Calculate; "ΔθMAX"=-(θ443MAX-θCEN)
"ΔθMIN"=-(θ443MIN-θCEN)
UV2
Color Control
/ GCOLMAX
/ GCOLMIN
RGB Mute:0
Color:0/64/127
Y Mute:1
Uni-Color:127
Others: Preset
(1) Input a 4.43MHz PAL rainbow color-bar(300mV(p-p),
burst:chroma=1:1) with sync into Pin61.
(2) Measure the Pin14 amplitude for Color 127/64/0, that is
VCOLMAX / VCOLCEN/ VCOLMIN.
(3) Calculate; "GCOLMAX"=20*log(VCOLMAX/VCOLCEN)
"GCOLMIN"=20*log(VCOLMIN/VCOLCEN)
UV3
contrast control for
UV
/ GUCC
RGB Mute:0
Uni-Color:0/127
Y Mute:1 Others:
Preset
(1) Input a 4.43MHz PAL rainbow color-bar(300mV(p-p),
burst:chroma=1:1) with sync into Pin38&43.
(2) Measure the Pin20 amplitude for Uni-Color 127/0 that is
VUCCMAX, and VUCCMIN.
(3) Calculate;"GUCC"=20*log(VUCCMIN/VUCCMAX)
UV4
Relative Amplitude
(PAL1)
/ VP1R/B
/ VP1G/B
Relative Amplitude
(PAL2)
/ VP2R/B
/ VP2G/B
Relative Amplitude
(NtsC1)
/ VN1R/B
/ VN1G/B
Relative Amplitude
(NTSC2)
/ VN2R/B
/ VN2G/B
RGB Mute:0
Y Mute:0/1
Uni-Color:127
Others: Preset
(1) Input a 100IRE signal with sync into pin61.
(2) Adjust G/B drive so that each amplitude of pin12/13/14
output are equal.
(3) Set Y Mute to 1.
(4) Input a 4.43MHz PAL rainbow color-bar(300mV(p-p),
burst:chroma=1:1) with sync into Pin61.
(5) Measure the amplitude of Pin12/13/14 output, that is
"VPROUT"/ "VPGOUT" / "VPBOUT"
(6) Calculate;
" VP1R/B "=VPROUT/VPBOUT
" VP1G/B "=VPGOUT/VPBOUT
(7) Set 'Demo P' to PAL2/NTSC1/NTSC2.
(8) Repeat (6)&(7), that is “VP2R/B”/” VP2G/B”/ VN1R/B”/” VN1G/B”/”
VN2R/B”/” VN2G/B”.