NEC PlasmaSync PX-42VM1G, Service Manual

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5-26
METHOD OF ADJUSTMENTS
PC mode 31 32 33 34 35
Signal name IDC-3000G IDC-3000G HDTV-J DTV (480P) DTV (720P)
PAL 625P NTSC 525P
Definition 768*576 640*480 1920*1034 644*483 1280*720
Dot clock frequency (MHz) 29.687 24.39 74.25 24.37 74.25
H frequency (kHz) 31.389 31.47 33.75 31.469 45.000
V frequency (Hz) 50 59.9 60/60 59.94 60
H total (
µ
S) 31.933 31.775 29.63 31.777 22.222
(dots) 948 775 2200 774 1650
H display period (
µ
S) 25.87 26.24 25.86 26.427 17.239
(dots) 768 640 1920 644 1280
H front porch (
µ
S) 0.269 0.41 0.59 0.75 0.943
(dots) 8 10 44 18 70
H sync pulse width (
µ
S) 2.526 2.46 0.59 2.35 1.077
(dots) 75 60 44 57 80
H back porch (
µ
S) 3.267 2.665 2.59 2.25 2.963
(dots) 97 65 192 55 220
V total (mS) 19.911 16.522 16.652 16.683 16.667
(line) 625 525 562/562 525 750
V display period (mS) 18.35 15.106 15.319 15.348
(line) 576 480 517/517 483 720
V front porch (mS) 0.223 0.252 0.148 0.191 0.111
(line) 7 8 5 6 5
V sync pulse width (mS) 0.223 0.22 0.148 0.191 0.111
(line) 7 7 5 6 5
V back porch (mS) 1.115 0.944 1.037 0.953 0.444
(line) 35 30 35 30 20
H sync polarity Neg Neg Neg Neg Neg
V sync polarity Neg Neg Neg Neg Neg
Scan type Non Non Interlaced Non Non
interlaced interlaced interlaced interlaced
VGROM NO. 31 32 33 34 35
Signal reference origin Measured data Measured data ASTRO VG-822 Video coding SMPTE
(check required (check required incorporated 08-10-01 STANDARD
on actual machine) on actual machine)