![background image](http://html1.mh-extra.com/html/viewsonic/vx500plus-1/vx500plus-1_service-manual_1020009020.webp)
Mode
21
Signal name
symbol
720P
H-frequency (khz)
45.000
V-frequency (hz)
60.00
Pixel rate (mhz)
74.250
H-sync Ths
40
H-back porch
Thb
270
H-total Thd
1658
H- front porch
Tv
60
V-sync Tvs
5
V-back porch
Tvb
20
V-total Tvd
750
V-front porch
Tvf
5
H-sync. Polarity
Negative
V-sync Polarity
Negative
H-resolution (dots)
1280
V-resolution (lines)
720
Digital timing mode table
Mode
1 2 3 4 5
Signal name
symbol
text
Dos-text
VGA
VGA
VGA
H-frequency
(khz) 31.468 31.468 31.468 31.468 37.862
V-frequency
(hz) 70.087 70.077 60.000 59.941 72.807
Pixel
rate
(mhz)
25.175 28.327 25.175 25.175 31.501
H-sync Ths
96
108
96
96
40
H-back
porch Thb
48 54 48 48 128
H-total
Thd
800 900 800 800 832
H- front porch
Tv
16
18
16
16
24
V-sync
Tvs
2 2 2 2 3
V-back
porch Tvb
60 35 35 33 28
V-total
Tvd
449 449 449 525 520
V-front
porch Tvf
37 12 10 10 9
H-sync.
Polarity
Positive Negative Negative Negative Negative
V-sync Polarity
Negative
Positive
Negative
Negative
Negative
ViewSonic Corporation
Confidential
– Do Not Co
py
VX500+-1
1
7
Summary of Contents for VX500PLUS-1
Page 42: ...FIG 13 AUDIO SINE SIGNAL OUT ViewSonic Corporation Confidential Do Not Copy VX500 1 39...
Page 54: ...A A A A ViewSonic Corporation Confidential Do Not Copy VX500 1 51 10 EXPLODED PARTS VIEW...
Page 55: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 52...
Page 56: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 53...
Page 57: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 54...
Page 60: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 57 11 BLOCK DIAGRAM...
Page 67: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 64 13 PCB LAYOUT DIAGRAM...
Page 68: ...ViewSonic Corporation Confidential Do Not Copy VX500 1 65...