LC640.480.33-AC Operations Manual (OM600-01)
23
Warm-up Characteristic
Some time after startup is required to allow the CCFL tubes to reach their normal
operating temperature. The graph in Figure 14 shows the typical room temperature
warmup curve for the LC640.480.33-AC when set to maximum luminance. As can be
seen, luminance is at nearly 95% of the final value after five minutes of operation, and
99% of the final value at 10 minutes after startup.
Figure 14. Warmup Curve.
Display Dimensions
The recommended clearance shown in Figure 15 illustrates the distance behind the
display ECA which should be left for free low of air for the purposes of convection
cooling. In Figure 15, dimensions are in millimeters. Tolerances unless specified are as
follows:
.x
±
0.50
.xx
±
0.25
Note:
The dimensions in this drawing are approximate. Please contact Planar
Applications Engineering to request the actual drawing prior to beginning your
design.
Warmup Curve
0
20
40
60
80
100
0
2
4
6
8 10 12 14 16 18 20 22 24 26 28 30 32 34
Time, minutes
Center Lu
m
inance,
%
20.0
20.5
21.0
21.5
22.0
22.5
23.0
Backlight P
wr, W
Lum, %
PH
