LG 26LH1DCX-UX / 26LH1DC3-UA / 26LH1DC4-UB / 26LH1DC5-UC Service Manual ▷ View online
-7-
Item
Min
Typ
Max
Unit
Remark
Dynamic Range
-82
-5
dBm
2CH, 3CH, UHF : -80dBm
White Noise(SNR)
15.5
dB
Channel Pull-in Range
-250
250
KHz
N/D Co-channel
DTV(-30dBm)
5
dB
Ps=7Db , Color Bar
400Hz, 25kHz Dev
400Hz, 25kHz Dev
DTV(-60dBm)
5
dB
N/D Upper Adj-Ch
PS=75Db, Color Bar
PS=75Db, Color Bar
DTV(-60dBm)
35
42
dB
400Hz, 25kHz Dev
N/D Lower Adj-Ch
PS=75Db , Color Bar
N/D Lower Adj-Ch
PS=75Db , Color Bar
DTV(-60dBm)
35
42
dB
400Hz, 25kHz Dev
<TEST EQUIPMENT>
Ensemble Ghost
A~G
OK
ROHDE & SCHWARZ
(ATTC recommend)
TV TEST TRANSMETER
Static Ghost
0°
2
(0.1usec)
90°
2
dB
180°
2
Static Ghost
0°
2
(0.2usec)
90°
2
dB
180°
2
Static Ghost
0°
2
(0.3usec)
90°
2
dB
180°
2
Static Ghost
0°
2
(1.0usec)
90°
2
dB
180°
2
Static Ghost
0°
2
(5.0usec)
90°
2
dB
180°
2
Doppler Ghost
0.2Hz
4
(0.1 usec)
0.5Hz
4
1.0Hz
4
dB
2.0Hz
4
5.0Hz
4
Doppler Ghost
0.2Hz
4
(0.2 usec)
0.5Hz
4
1.0Hz
4
dB
2.0Hz
4
5.0Hz
4
Item
Specification
Unit
Remark
4. DTV Characteristics
4.1 General Specification
4.2 Digital Receive Part : 8T VSB Standard
VSB Reception Channel
2 ~ 69CH(DTV)
QAM Reception Channel
1 ~ 135CH(CADTV)
Video Resolution
ATSC 18 FORMAT
QAM Resolution
Sanoff OpenCable FORMAT
VSB / QAM RF Input
75Ω unbalanced input
F-type CONNECTOR input
F-type CONNECTOR input
CH UP/DOWN :
Under 3.0
Sec.
Time for stable Sync
RF Dynamic Range
RF Dynamic Range
0~-80
dBm
VSB AFC Range
Fo +/-250
KHz
QAM AFC Range
Fo +/-170
KHz
-8-
Content
Unit
Spec
Remark
Min
Typ
Max
VIDEO
Item
Min
Typ
Max
Unit
Remark
Doppler Ghost
0.2Hz
4
(0.3 usec)
0.5Hz
4
(1.0 usec)
1.0Hz
4
dB
(5.0 usec)
2.0Hz
4
5.0Hz
4
Item
Min
Typ
Max
Unit
Remark
Dynamic Range
64 QAM
-69.0
-32.0
dBm
256 QAM
-63.0
-32.0
dBm
White Noise(SNR)
64 QAM
27
dB
Input RF Level : -50.0 dBm
256 QAM
34
dB
Channel Pull-in Range (64/256 QAM)
-170
170
KHz
N/D Upper Adj-Ch
64 QAM
21
dB
DTV(-40dBm)
PS=75Db, Color Bar
400Hz, 25kHz Dev
400Hz, 25kHz Dev
256 QAM
16
dB
DTV(-40dBm)
4.3 Digital Receive Part : 64/256 QAM
Input
CVBS
1V
480i
-Active Video
mV
644
714
786
-Sync
258
286
314
S-Video
1V
-Active Video
mV
644
714
786
-Sync
258
286
314
-Color Burst
258
286
314
Component
1V
480i/480p/720p/1080i
-Y/Pb/Pr
mV
630
700
770
-Sync
270
300
330
RGB Input
DTV : 480i/480p/720p/1080i
-R/G/B
mV
630
700
770
PC : *See 5. Signal Timing
-H/V
TTL
4.4 Video Inputs
4.5 Audio
Content
Unit
Spec
Remark
Min
Typ
Max
AUDIO (Dolby Digital 2CH Out)
OPTICAL
UI(EYE PATTERN)
%
20
IEC958 COMPOSITE AC-3
OUTPUT
CATEGORY
64(HEX)
CODE
ANALOG
REF. LEVEL
@1kHz, -20dBFs
AUDIO
-LEFT
mVrms
200
OUT
-RIGHT
200
MAX. LEVEL
-LEFT
-LEFT
Vrms
2
-RIGHT
2
SEPERATION
-LEFT
-LEFT
dB
-60
-RIGHT
-60
FREQ.
@20Hz~20kHz
RESPONSE
-19.5
-21
@ 0.5dB ~ -1.0dB
-LEFT
dB
-RIGHT
-9-
THD+N vs FREQ.
-LEFT
-LEFT
dBFs
-60
-RIGHT
-60
THD vs LEVEL
@-20dBFs
-LEFT
dBFs
-60
-RIGHT
-60
*DYNAMIC
RANGE
-65
-16BIT(L, R)
dB
-65
-18BIT(L, R)
-65
-20BIT(L, R)
*Dynamic Range Control (DRC) is originally the concept of Dolby Digital and used only in Dolby Digital.
But as a similar concept there is the Automatic Volume Correction in the analog TV, and it is used in the same menu
because there is no possibility of conflict between the two.
Therefore, if you turn on the DRC in the menu, the DRC will be active in the digital TV and AVC will be active in the analog TV.
because there is no possibility of conflict between the two.
Therefore, if you turn on the DRC in the menu, the DRC will be active in the digital TV and AVC will be active in the analog TV.
5. Signal Timing (Resolution)
5.1 Component Video Input (Y, CB/PB, CR/PR)
5.2 PC Mode (RGB)
No.
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel Clock(MHz)
Proposed
1
640*350
31.469
70.087
25.17
EGA
2
720*400
31.469
70.087
28.32
DOS
3
640*480
31.469
59.94
25.175
VGA
4
640*480
37.5
75
31.5
VGA
5
640*480
43.269
85.008
36
VGA
6
800*600
37.879
60.317
40
SVGA
7
800*600
46.875
75
49.5
SVGA
8
800*600
53.674
85.061
56.25
SVGA
9
832*624
49.726
75.552
58.05
MAC
10
1024*768
48.363
60.004
65
XGA
11
1024*768
60.023
75.029
78.75
XGA
12
1024*768
68.677
84.997
94.5
XGA
13
1280*720
44.772
59.855
74.5
VESA
14
1360*768
47.72
59.799
84.75
VESA
15
720*480
31.5
60
31.5
SDTV, 480p
16
720*480
31.469
59.94
59.94
SDTV, 480p
17
1280*720
45
60
74.25
HDTV, 720p
18
1280*720
44.96
59.94
74.18
HDTV, 720p
19
1920*1080
33.75
60
74.25
HDTV, 1080i
20
1920*1080
33.72
59.94
74.18
HDTV, 1080i
No.
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel Clock(MHz)
Proposed
1
720*480
15.75
60
13.51
SDTV, 480i
2
720*480
15.734
59.94
13.5
SDTV, 480i
3
720*480
31.5
60
27.03
SDTV, 480p
4
720*480
31.469
59.94
27
SDTV, 480p
5
1280*720
45
60
74.25
HDTV,720p
6
1280*720
44.96
59.94
74.18
HDTV,720p
7
1920*1080
33.75
60
74.25
HDTV,1080i
8
1920*1080
33.72
59.94
74.18
HDTV,1080i
-10-
5.3 DVI/HDMI Input : HDMI Ver1.2a
No.
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel Clock(MHz)
Proposed
1
640*480
31.469
59.94
25.17
VGA
2
640*480
37.861
72.8
31.5
VGA
3
640*480
37.5
75
31.5
VGA
4
640*480
43.3
85
36
VGA
5
800*600
35.156
56.25
36
SVGA
6
800*600
37.879
60.31
40
SVGA
7
800*600
48.077
72.18
50
SVGA
8
800*600
46.875
75
49.5
SVGA
9
800*600
53.7
85
56.25
SVGA
10
1024*768
48.363
60
65
XGA
11
1024*768
56.476
70.06
75
XGA
12
1024*768
60.023
75.02
78.75
XGA
13
1024*768
68.7
85
94.5
XGA
14
1280*768
47.78
59.87
79.5
15
1360*768
47.72
59.8
84.75
16
720*400
31.43
70
27.28
DOS
17
720*480
15.75
60
27.03
SDTV, 480i
18
720*480
15.734
59.94
27
SDTV, 480i
19
720*480
31.5
60
31.5
SDTV, 480p
20
720*480
31.469
59.94
59.94
SDTV, 480p
21
1280*720
45
60
74.25
HDTV, 720p
22
1280*720
44.96
59.94
74.18
HDTV, 720p
23
1920*1080
33.75
60
74.25
HDTV, 1080i
24
1920*1080
33.72
59.94
74.18
HDTV, 1080i
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