5-3
2. Safety
2.1 Insulation resistance
The resistance of the insulation between the power terminal and the earth ground contact is more than 10M
ohms while withstanding a voltage of 500Vdc.
2.2 Dielectric strength
There is no breakdown of the insulators or short circuits when applying an alternating potential of 1000Vac
for a duration of 1(one) minute or 1500Vac for a duration of 2(two) second at 50Hz between the metallic
chassis and the input power supply active and neutral terminals connected together.
2.3 Leakage current
The current conducted between each of the power supply’s contacts is less than 1.5mA at 255Vac (60Hz)
and 0.25mA at 100Vac (60Hz).
2.4 Ground continuity
The resistance between the groundside of the power cord and the accessible metal parts located in ground
circuit shall not exceed 0.1 ohm at current load of 25mA.
3. Preset timing sheet
Horizontal
Vertical
No
Timing
Dot
Clock
(MHz)
Freq.
(KHz)
Total Active Pulse Back Front
Freq.
(Hz)
Total Active Pulse Back Front HS,VS
1
VGA 720
×
350
70Hz
28.322
31.469
900 720 108 54 18 70.087
449 350 2 60 37 P,N
2
PC98 640
×
400
56Hz
21.053
24.827
848 640 64 85 59 56.424
440 400 8 25 7 N,N
3
VGA 720
×
400
70Hz
28.322
31.47 900 720 108 54 18 70.087
449 400 2 35 12 N,P
4
VGA 640
×
480
60Hz
25.175
31.47 800 640 96 48 16 59.992
525 480 2 33 10 N,N
5
MAC 640
×
480
66Hz
30.24
34.97 864 640 64 96 64 66.61 525 480 3 39 3 N,N
6
VESA 640
×
480
72Hz
31.5
37.861
832 640 40 128 24 72.809
520 480 3 28 9 N,N
7
VESA 640
×
480
75Hz
31.5 37.5 840 640 64 120 16 75.00 500 480 3 16 1 N,N
8
VESA 800
×
600
56Hz
36
35.156
1024
800
72 128 24
56.25
625
600 2 22 1 P,P
9
VESA 800
×
600
60Hz
40
37.879
1056
800
128 88 40
60.317
628
600 4 23 1 P,P
10
VESA 800
×
600
75Hz
49.5
46.875
1056
800
80 160 16 75
625
600 3 21 1 P,P
11
VESA 800
×
600
72Hz
50 48.077
1040 800 120 64 56 72.188 666 600 6
23 37 P,P
12
MAC 832
×
624
75Hz
57.283
49.725
1152
832
64 224 32
74.55
667
624 3 39 1 N,N
13
VESA 1024
×
768
60Hz
65 48.363
1344 1024 136 160 24 60.004
806 768 6 29 3 N,N
14
SUN 1024
×
768
65Hz
70.49 53.7 1344 1024 136 160 24 65.57 806 768 6
29
3 N,N
15
VESA 1024
×
768
70Hz
75 56.476
1328 1024 136 144 24 70.069
806 768 6 29 3 N,N
16
VESA 1024
×
768
75Hz
78.75
60.023
1312
1024
96 176 16
75.029
800
768 3 28 1 P,P
