ViewSonic N3250wb-1G, 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. 0.35 Vp-p
S-Video Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
Y :0.7- 1.0Vp-p W / Neg. Sync (IN 75 Ω )
C : 0.286Vp-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 –1.0Vp-p(IN 75 Ω ),Pr:0.7-1.0 Vp-p(IN 75 Ω )
Video Bandwidth PAL: 7/8 MHz Maximum SECAM: 8 MHz Maximum
HDMI Characteristics digital (DVI-D) applicable
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.
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
10W at 10 % T.H.D Distortion 10W at 10 % T.H.D Distortion
Speaker Impedance 6 Ω 6 Ω
Line In Per Tuner Spec
500 mV rms (Typ)
1.6 V rms (Max)
Impedance: 600 ohms
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) 35dB(400Hz to 20 kHz)
ViewSonic Corporation
Confidential - Do Not Copy
N
3250
w
b
-1
G
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