ViewSonic VTMS2431 Service Manual page 7

2. Video
Built-in A/D converter shall provide analog to digital converter for this product.
Input Parameter
CVBS Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
S-Video Characteristics:
Video Amplitude Signal
Y, Pb, Pr Characteristics:
Video Amplitude Signal
Video Bandwidth
HDMI Characteristics
RGB Characteristics:
Signal Type
Sync Type
Input Signal Rating
Sync Level:
Frequency Range
Pixel Color
DDC Compliance
EDID Data Table
USB Characteristics
3. Audio
Audio amp of this product shall be provided by "YAMAHA" with a Model Number of YDA148 .
"MST" MSD2248AL for VTMS2431-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
Power Output Max Rating
Speaker Impedance
Line In
Line Out earphone jack
Flatness of Amplitude
Response
Total Harmonic Distortion
(Po=0.1 to 1 W, f=1KHz)
Signal to Noise:
ViewSonic Corporation
0.7(min.) – 1.1(max.) V
Typical. 0.3 V
Y : 1.0Vp-p W / Neg. Sync (IN 75 Ω )
C : 0.285Vp-p (IN 75 Ω )
Y:1.0Vp-p (IN 75 Ω)
Pb:0.7 Vp-p(IN 75 Ω),Pr:0.7 Vp-p (IN 75 Ω)
NTSC: 6 MHz Maximum
Panel Link T.M.D.S HDMI-1.3
Analog VGA
TTL, Separate Sync, with 2.2KΩ pull-down resistors
1250mV Max without damage to the product, 0-700 mV Full Range
2.5-5.25 V
Horizontal: 30-82K Hz, Vertical: 55-75 Hz
16.7 M
DDC2B Compliant, Rev 1.3
Refer to Appendix
USB 2.0
Tuner Input
5W at 10 % T.H.D Distortion
main speaker :8 Ω
NTSC: BTSC Mono / Stereo(standard)
PAL: FM Mono / Stereo(standard)
+/- 3 db (at 1KHz @1W)
<2%
12 dB (100Hz to 1KHz)
8 dB (1kHz to 10kHz)
4
Specification
Specification
Base band Input
5W at 10% T.H.D Distortion
main speaker :8 Ω
500 mV rms (Typ)
1.6 V rms (Max)
Impedance: 600 ohms
500 mV rms
15 mW@32Ω
+/- 3 db (at 1KHz @1W)
<2%
35 dB (100Hz to 10 kHz)
Confidential - Do Not Copy VTMS2431