Sampo SME-27FDL5, Service Manual

Page: 34 / 95

SPECIFICATION VER1.0
5-3
2.4. Display performance requirements.
The data of display performance are measured based on the following conditions unless
otherwise specified.
a. Ambient temperature 25
± ±± ±
5 degree C
b. Earth magnetic field : H : 0.00, V : 0.4
± ±± ±
0.05 Gauss
c. Warm up period 30 minutes minimum
d. Line input voltage : Nominal 120 Vac / 60 Hz ~ 220 Vac / 50 Hz
e. Unit facing direction With CRT screen facing east
f. Viewing distance Distance from screen is 3.5m
g. Display mode Test with full white pattern of mode 1 if not specified.
h. Brightness condition Press reloads button to set Brightness to center point and
adjust contrast control to 15 FL.
i. Heater voltage 6.2
± ±± ±
0.3Vdc
j. HV Operation 31
± ±± ±
1KV
2.4.1 Maximum Resolution 1024 dots x 768 lines (non-interlace)
2.4.2 Horizontal size (Standard) 620
± ±± ±
8 mm (for mode 1
〜 〜 〜 〜
9)
Vertical size (Standard) 465
± ±± ±
8 mm (for mode 1
〜 〜 〜 〜
9)
2.4.2.1 Horizontal size (max) Mode 1-6
≧
≧ ≧
≧
Over-scan
Vertical size (max) Mode 7-9
≧
≧ ≧
≧
full-scan
2.4.3 Size thermal drift Within
± ±± ±
8 mm
(The size drift is being compared between the range of
operating and ambient temperature.)
2.4.4 Size regulation
1. Less than 7 mm (MODE 1
→ → → →
MODE 6)
(The size regulation is being compared the size change
between the max. and min. brightness level.)
2. Less than 7 mm (MODE 7
→ → → →
MODE 9)
(The size regulation is being compared the size change
between the recall. and min. brightness level.)
2.4.5 Maximum brightness level
a. Full white pattern
24
±
±±
±
5 FL at the screen center.
(While pressing reload button to set contrast and brightness
control at max.)
b. 100% center block white
pattern
85
±
±±
±
5 FL
(While pressing reload button to set contrast and brightness
control at max.)
c. Minimum brightness level
(ALL WHITE PATTERN)
With the contrast at min and brightness at central. Less than
5 FL.
d. Raster background 0.5 FL
± ±± ±
0.3 FL.
(With the contrast max, brightness at max and black signal)
2.4.6 Brightness uniformity
(Test with five circle mosaic
pattern and set the brightness
level of center circle at 15FL.)
Brightness (corner circle)
Brightness (center)
>50%