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參數(shù)資料
| 型號： | LA76075 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | NTSC Color Television Sets |
| 中文描述： | NTSC制式彩電 |
| 文件頁數(shù)： | 24/35頁 |
| 文件大小： | 712K |
| 代理商： | LA76075 |
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No. 5845-24/35
LA76075
Item
Symbol
Measurement
Point
Input
Signal
Measurement Procedure
Bus Condition
[On Screen Display
(OSD) Block]
For the following measurements, set both the pix and
brightness bus bits to 63.
Pix : 0111111
Brightness : 0111111
OSD Fast Switch
threshold
Gradually raise the voltage at pin 36 from 0 V and note
the voltage at which the output signal switches to the
OSD signal.
Apply 0-2 to pin 35.
FS
TH
30
L-0
0-2
Red RGB output level
Measure CNTCR, the 50 IRE amplitude (Vp-p) of the
output signal.
pin 36 : 3.5 V
Apply 0-2 to pin 33.
R
OSDH
28
L-50
Green RGB output level
Measure CNTCG, the 50 IRE amplitude (Vp-p) of the
output signal.
G
OSDH
29
L-50
Measure OSDHR, the OSD output amplitude (Vp-p).
L-0
0-2
pin 36 : 3.5 V
Apply 0-2 to pin 33.
Measure OSDHG, the OSD output amplitude (Vp-p).
L-0
0-2
R
OSDH
= 50
×
(OSDHR/CNTCR)
G
OSDH
= 50
×
(OSDHG/CNTCG)
Blue RGB output level
Measure CNTCB, the 50 IRE amplitude (Vp-p) of the
output signal.
B
OSDH
R
RGB
LR
RGB
30
L-50
Analog OSD Red output
level
Measure REGLR, the output amplitude (Vp-p) at point
A of the output signal, and RGBHR, the same at point
B. Note: Point A corresponds to the 0.35-V point in the
input signal 0-1 []; point B, to the 0.7-V point.
28
L-0
0-1
Gain match
Linearity
R
RGB
= RGBLR/CNTCR
LR
RGB
= 100
×
(RGBLR/RGBHR)
pin 36 : 3.5 V
Apply 0-2 to pin 33.
pin 36 : 3.5 V
Apply 0-1 to pin 33.
G
RGB
LG
RGB
Analog OSD Green
output level
Measure RGBLG, the output amplitude (Vp-p) at point
A of the output signal, and RGBHG, the same at point
B. Note: Point A corresponds to the 0.35-V point in the
input signal 0-1 []; point B, to the 0.7-V point.
29
L-0
0-1
Gain match
Linearity
G
RGB
= RGBLR/CNTCG
LG
RGB
= 100
×
(RGBLG/RGBHG)
pin 36 : 3.5 V
Apply 0-1 to pin 34.
B
RGB
LB
RGB
Analog OSD Blue output
level
Measure RGBLB, the output amplitude (Vp-p) at point
A of the output signal, and RGBHB, the same at point
B. Note: Point A corresponds to the 0.35-V point in the
input signal 0-1 []; point B, to the 0.7-V point.
30
L-0
0-1
Gain match
Linearity
B
RGB
= RGBLB/CNTCG
LB
RGB
= 100
×
(RGBLB/RGBHB)
pin 36 : 3.5 V
Apply 0-1 to pin 35.
Measure OSDHB, the OSD output amplitude (Vp-p).
L-0
0-2
B
OSDH
= 50
×
(OSDHB/CNTCB)
[RGB Output (Cutoff,
Drive) Block]
For the following measurements, set the pix bus bits to
127.
Pix : 1111111
Brightness control
(normal)
Measure BRTPCR, BRTPCG, and BRTPCB, the 0 IRE
DC output levels (V) at pins 28 (RED OUT), 29 (GRN
OUT), and 30 (BLU OUT).
Brightness : 01111111
BRT63
28
29
30
L-0
(max)
Measure BRTPHB, the 0 IRE DC output level (V) at
pin 30 (BLU OUT).
BRT127 = 50
×
(BRTPHB-BRTPCB)/CNTHB
Brightness : 11111111
BRT127
30
(min)
Measure BRTPLB, the 0 IRE DC output level (V) at pin
30 (BLU OUT).
BRT0 = 50
×
(BRTPLB-BRTPCB)/CNTHB
Brightness : 00000000
BRT0
BRT63 = (BRTPCR + BRTPCG + BRTPCB)/3
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA7615 | Single-Chip NTSC Color TV IC |
| LA7620 | Color TV Video, Chroma, Deflection Circuit |
| LA7625 | Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | Color TV/Video,Chroma,Deflection Circuit |
| LA7640N | Chroma Circuit for SECAM-system Color Television Sets |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7612A | 制造商:SANYO Semiconductor Co Ltd 功能描述: |
| LA7615 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip NTSC Color TV IC |
| LA7620 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV Video, Chroma, Deflection Circuit |
| LA7621 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA7625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets |
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