參數(shù)資料
型號(hào): TA1360ANG
元件分類(lèi): 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP56
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-56
文件頁(yè)數(shù): 46/108頁(yè)
文件大小: 1568K
代理商: TA1360ANG
TA1360ANG
2005-08-18
42
Test Condition for Picture Quality (Sharpness) Block
Common Test Condition for Picture Quality (Sharpness) Block
1.
SW4 = SW5 = B, SW8~SW10 = B, SW20 = ON, SW23 = B, SW33SW39 = A, SW54 = OPEN
2.
Send bus control data as preset values, turn ACB operation switching to ACB OFF (00), select Sync input (1), turn P-MODE to Normal 1(000), WPL-LEVEL to
max (111), and change subaddress (1C) to (03).
3.
Input sync signal, which is in sync with input signal for testing except “Sweep”, to #14 (Sync input). “H-Freq.” should be the same frequency as the one of #14.
4.
Set Y/color difference input mode to (0), sync separator level to 20 % (01), and vertical free-running frequency to 307H (110).
Test Conditions
SW Mode
Note No.
Characteristics
SW1
SW2
SW3
SW7
SW56
Test Method (Test condition: VCC = 9 V/2 V, Ta = 25 ± 3°C)
P01
Black detection level shift
B
C
B
OPEN
1.
Connect external power supply PS to #3, and monitor #2 and #56.
2.
Set black stretch point 1 to OFF (000), and black detection level to 0 IRE (1).
3.
Increase PS voltage from 4.95 V in steps of 1 mV. At the moment when #2 picture period (High) drops to
Low level, monitor DC difference on #56 VB.
4.
Set black detection level to 3 IRE (0).
5.
Repeat the step 3 above and monitor DC difference, VB3 on #56.
P02
Black stretch amp maximum
gain
B
A
B
OPEN
1.
Set SW2 to A (maximum gain), and input 500-kHz sine wave to TPA.
2.
Adjust signal amplitude to 0.1 Vp-p on #3.
3.
Set black stretch point 1 to OFF (000), and measure #56 amplitude VA.
4.
Set black stretch point 1 to 001 (black stretch ON), and measure #56 amplitude VB.
5.
Calculate GBS using a following equation.
GBS
= 20 × og
l
(VB ÷ VA) [dB]
VB, VB3
#56 waveform
#2 waveform
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