Philips 231P4UPEB/00, Service Manual

Page: 70 / 95

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70 Meridian 4
2.2 Scanning frequencies
Hor. : 30 – 83 K Hz
Ver. : 56 - 75 Hz
Video dot rate: < 210 MHz for VGA and < 170 MHz for DVI & DP, warning message must be
displayed while over 165 MHz (supplier to provide accurate scaler bandwidth number)
Power input: 90-264 V AC, 50/60
r
2 Hz
Functions:
(1) D-SUB analog R/G/B separate inputs, H/V sync separated, Composite (H+V) TTL level,
(2) SOG sync : a. Sync select: H + V
b. Sync select: SERR
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2.3 Ambient temperature:
0 q C - 40 q C
3 Electrical characteristics
Scaler should be capable of below items.
1) Scaler must support color engine for Image enhancement feature (SmartImage)
2) Scaler must have enough memory to support PerfecTune feature and Philips OSD
3) Scaler must support SmartContras,20M:1 DCR preferred
4) VGA signal Auto adjustment:
Monitor automatically adjusts and optimizes resolution and frequency based on input signal defined
by “Source” function. “NO VIDEO INPUT” message to be displayed on screen while no signal is
detected. Monitor will automatically optimize resolution and frequency whenever connected to
different signal source. When press the “Auto”, the screen also show a status bar. During
adjustment period, a status bar will show on screen from 0% to 100% to indicate the progress of
adjustment.
Auto auto adjustment : new timing & preset modes ( non- factory preset mode) should do auto
adjustment at first time detection and save the related date into memory.
Resolution:
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640*480,720*400,640*350, 640*400 , do not do auto auto
adjustment.
3.1 Interface signals
1). D-Sub Analog
Input signal : Video, Hsync., Vsync
Video : 0.7 Vp-p, input impedance, 75 ohm @DC
Sync. : Separate sync TTL level , input impedance 2.2k ohm terminate
Hsync Positive/Negative
Vsync Positive/Negative
Composite sync TTL level, input impedance 2.2k ohm terminate (Positive/Negative)
Sync on green video 0.3 Vp-p Negative (Video 0.7 Vp-p Positive)
2). USB INPUT :