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PC-UM10M
LL-T1815-H/B WAVE FORM
5 – 1
CHAPTER 5. WAVE FORM
Waveform measurement condition: Input each of the display patterns and measure the waveform (timing chart)
CAUTION
Probe: Tectronix TDS64BB
Reception mode: VESA 1280 X 1024
Reception mode: VESA 1280 X 1024
H: 80kHz V: 75Hz DOTCLK: 135MHz
WAVEFORM FIGURE
WAVE FORM1 : XN1(
IC16’s 21PIN
)
Frequency:
24MHz
Display screen: Arbitrary
2V/DIV, 25ns/DIV
WAVE FORM2 : XIN2(
X1's PIN on C113 side
)
Frequency:
24MHz
Display screen: Arbitrary
2V/DIV, 25ns/DIV
WAVE FORM3 : VSYNC (LD12)
Frequency:
75MHz
Display screen: Arbitrary
2V/DIV, 2.5ms/DIV
Wave-form No.
Measurement point
Name of waveform
Display pattern
1
IC16’s 21PIN
XIN1
Arbitrary
2
X1's PIN on C113 side
XIN2
Arbitrary
3
LD12
VSYNC
Arbitrary
4
LD11
HSYNC
Arbitrary
5
LD20
LCD CLK
Arbitrary
6
LD21
LCD DE
Arbitrary
7
IC23's 29, 30, 41, 42PIN
LVDS CK
Arbitrary
8
RN1 - RN12
LCD DATA
Pattern in every 2 lines of black and white
9
RN1 - RN12
LCD DATA
Pattern in every 2 lines of black and white
10
IC8 side of C7, C11, C15
RGB OUT
16 monochromatic gradation patterns
11
IC10/11/12's 2, 3, 5, 6, 8, 9, 11, 12, 39, 40, 42,
43, 45, 46, 48, 49PIN
43, 45, 46, 48, 49PIN
SDRAM I/O DATA
Pattern in every 2 lines of black and white
12
IC10/11/12's 2, 3, 5, 6, 8, 9, 11, 12, 39, 40, 42,
43, 45, 46, 48, 49PIN
43, 45, 46, 48, 49PIN
SDRAM I/O DATA
Pattern in every 2 lines of black and white
Oscilloscope: Tectronix TDS64BB
Input signal:
VESA 1280 X 1024
H: 80kHz V: 75Hz
DOTCLK: 135MHz
GND
GND
GND
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