Pc Signal Requirements - Philips 231T1SB/00 Service Manual

3.3.3

PC Signal Requirements

Pixel rate capability
Sync input
Horizontal frequency
Vertical frequency
PC analog RGB level
2
I C DDC signal
Preset video timings
Audio input
No signal input
PC timing
Timing Table List:
Factory
Support
Preset
Timing
Timing
*
*
* *
*
*
* *
*
* *
*
* *
*
* *
*
* *
*
*
*
*
160 MHz for ATV, 160 MHz for DTV
TTL level, separate H / V sync only, "+" or "-" polarity, terminated with ≥ 2.2kΩ
impedance
30 ~ 83 KHz
56 ~ 76 Hz
0 ~ 700 mV linear, positive polarity, terminated with 75Ω impedance
DDC serial Data & Clock, DDC components are connected to both monitor Vcc
and DDC +5V (from PC via video cable), that the PC can read the DDC data
also when the monitor is powered off. To prevent current feedback into PC,
blocking diodes are required at monitor side.
Follow VESA timing mode up to panel native resolution. Preset video timings,
size and centering have been pre-aligned in factory according to specifications.
Sensitivity 500mVrms, the amplifier outputs full power when the input level
reaches 500mVrms, terminated with impedance >10kΩ
While no signal at external inputs or signal cable not connected, screen goes
black with message "No Video Input" for 30 seconds before going to DPM mode
Resolution
DOS 640x350/70
DOS 720x400/70
DMT 4:3 640x480/60
MAC 640x480/67
DMT 4:3 640x480/72
DMT 4:3 640x480/75
DMT 4:3 800x600/56
DMT 4:3 800x600/60
DMT 4:3 800x600/72
DMT 4:3 800x600/75
MAC 832x624/75
DMT 4:3 1024x768/60
DMT 4:3 1024x768/70
DMT 4:3 1024x768/75
DMT 1152x864/75
MAC 1152x870/75
SUN 1152x900/66
SUN 1152x900/76
Meridian 1
Pixel
Horizontal Vertical
Rate
( KHz )
( MHz )
25.18 31.47
28.32 31.47
25.18 31.47
30.24 35.00
31.50 37.86
31.50 37.50
36.00 35.16
40.00 37.88
50.00 48.08
49.50 46.88
57.28 47.73
65.00 48.36
75.00 56.48
78.75 60.02
108.00 67.50
100.00 68.68
92.94 61.80
105.56 71.71
73
V_Total
( Hz ) ( Line )
70.09 449
70.09 449
59.94 525
66.67 525
72.81 520
75.00 500
56.25 625
60.32 628
72.19 666
75.00 625
74.55 667
60.00 806
70.07 806
75.03 800
75.00 900
75.06 915
65.95 937
76.05 943