參數(shù)資料
型號(hào)： LV4124W
文件頁(yè)數(shù)： 4/21頁(yè)
文件大小： 277K
代理商： LV4124W
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Chrominance Signal System]
NTSC
–3
0
+3
ACC amplitude characteristics 1
ACC1
PAL
–3
0
+3
dB
VTSC
–3
0
+3
ACC amplitude characteristics 2
ACC2
PAL
–3
0
+3
NTSC
±500
APC pull-in range
FAPC
Hz
PAL
±500
No.6000-4/21
LV4124W
Continued from preceding page
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Color Difference Signal System]
GEXRMX
+2
+3
dB
Color difference input balance
adjustment R
GEXRMN
–3
–4.5
dB
GEXBMX
–3
–4.5
dB
Color difference input balance
adjustment B
GEXBMN
+2
+3
dB
VEXGBN
0.21
0.24
0.27
–
G-Y matrix characteristics
(NTSC)
VEXGRN
0.46
0.51
0.56
–
VEXGRP
0.17
0.19
0.21
–
G-Y matrix characteristics
(PAL)
VEXGRP
0.46
0.51
0.56
–
Continued on next page.
Input SIG5 (VL = 150 mV) to (A) and SIG1 (–6 dB, 100 kHz,
no burst) to (D) and (E).
When TINT = 128, let VR0 be the T46 output amplitude
(100 kHz) and let VB0 be the T41 output amplitude (100 kHz).
When TINT = 255, let VR1 be the T46 output amplitude and
let VB1 be the T41 output amplitude.
When TINT = 0, let VR2 be the T46 output amplitude and let
VB2 be the T41 output amplitude.
Then calculate the following formulas.
GEXRMX = 20log (VR1/VR0) GEXRMN = 20log (VR2/VR0)
GEXBMX = 20log (VB1/VB0) GEXBMN = 20log (VB2/VB0)
Input SIG5 (VL = 150 mV) to (A) and SIG1 (0 dB, 100 kHz,
no burst) to (D).
Let VEXB be the T41 output amplitude (100 kHz) and
VEXBG be the T44 output amplitude (100 kHz).Calculate
VEXGB = VEXBG/VEXB.
Input SIG5 (VL = 150 mV) to (A) and SIG1 (0 dB, 100 kHz,
no burst) to (E).
Let VEXR be the T46 output amplitude (100 kHz) and
VEXRG be the T44 output amplitude (100 kHz).
Calculate VEXGR = VEXRG/VEXR.
Input SIG5 (VL = 150 mV) to (A) and SIG1 (0 dB, 100 kHz,
no burst) to (D).
Let VEXB be the T41 output amplitude (100 kHz) and
VEXBG be the T44 output amplitude (100 kHz).Calculate
VEXGB = VEXBG/VEXB.
Input SIG5 (VL = 150 mV) to (A) and SIG1 (0 dB, 100 kHz,
no burst) to (E).
Let VEXR be the T46 output amplitude (100 kHz) and
VEXRG be the T44 output amplitude (100 kHz).
Calculate VEXGR = VEXRG/VEXR.
AC Characteristics (2)
Input SIG5 (VL = 150 mV) to (A), and to (B),
input SIG2 (0 dB, 3.58 MHz, burst/chrominance
phase = 180°, and also 4.43 MHz,
burst/chrominance phase = ±135°).
Measure the T44 output amplitude. Modify the
SIG2 burst frequency, until the killer is
released. Measure the frequency f1 that
appears in the T41 output.
NTSC f1 = 3579545 Hz
PAL f1 = 4433619 Hz
Input SIG5 (VL = 150 mV) to (A), and to (B),
input SIG2 (0, +6, and –20 dB, 3.58 MHz,
burst/chrominance phase = 180°, and also
4.43 MHz, burst/chrominance phase = ±135°).
Measure the T53 output amplitude, and let V0,
V1, and V2 correspond to 0 dB, +6 dB, and
–20 dB, respectively.
ACC1 = 20log (V1/V0)
ACC2 = 20log (V2/V0)
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