ViewSonic VS11770-1M, Service Manual

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2. Video
Built-in A/D converter shall provide analog to digital converter for this product.
Input Parameter Specification
CVBS Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
0.7(min.)–1.1(max.) V
Typical. 0.3 Vp-p
S-Video Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
Y : 1.0Vp-p W / Neg. Sync (IN 75 Ω )
C : 0.285Vp-p (IN 75 Ω )
Y, Cb,Cr Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
Y:1.0Vp-p(IN 75 Ω )
Pb:0.7 Vp-p(IN 75 Ω ),Pr:0.7 Vp-p(IN 75 Ω )
Video Bandwidth NTSC: 6 MHz Maximum
HDMI Characteristics Panel Link T.M.D.S HDMI-1.1
RGB Characteristics:
Signal Type
Sync Type
Input Signal Rating
Sync Level:
Frequency Range
Pixel Color
Analog VGA
TTL, Separate Sync, with 4.7K
Ω
pull-down resistors
1250mv Max without damage to the product, 0-700 mv Full
Range
2.5-5.25 V
Horizontal: 30-80K Hz, Vertical: 50-75 Hz
16 M
3. Audio
Audio amp of this product shall be provided by “Yamaha” with a Model Number of YDA138 .
“MTK” MT5371 for N3235w-M shall be used as sound processor. In addition, a pair of speakers
shall be integrated within this product. The audio signals of this product shall comply with the
specification listed in the following table.
Parameter Specification
Phone Jack out
Tuner Input Base band Input
Speaker Power Output
Max Rating 10 W x 2 at 10% T.H.D
Distortion
10W x 2 at 10% T.H.D. Distortion
Speaker Impedance main spk :6 Ω 6 main spk :6 Ω 6
Line In Per Tuner Spec
500 mV rms (Typ)
1.6 V rms (Max)
Line Out
500 mVrms +/- 10%
@1K Hz tone (with +/-25k Hz
deviation at input, volume
with non-attenuation and
loading with 47k Ohm) 500 mVrms +/- 10%
@1K Hz tone (with +/-25k Hz
deviation at input, volume with
non-attenuation and loading with
47k Ohm)
Flatness of Amplitude
Response
(100Hz ~ 10KHz)
+/- 3 db (at 1KHz @1W) +/- 3 db (at 1KHz @1W)
Total Harmonic Distortion
(1KHz @1W)
2% 1%
Signal to Noise (1KHz
@1W)
30 dB (40Hz to 15KHz) 40dB(400Hz to 20 kHz)
4. Electrical
The following table defines the electrical specification of this product.
Power Input Voltage Range 100-/- 10% Wide Range
Input Frequency Range
47-63 Hz
Input Current 3.0A @ 115VAC // 1.5A @ 230VAC
Power Supply Inrush
Max in < 150A (with fully loaded power supply) at 230Vac
Shall not result in permanent failure of power supply (including blown
ViewSonic Corporation
Confidential - Do Not Copy
N
3235
w-1M
5