Dell Latitude C840 User Guide - Page 113

Keyboard, Touch Pad, Track Stick, Battery

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Operating angle Viewing angles: Horizontal Vertical Pixel pitch Power Consumption: Panel with backlight (typical) Controls 0° (closed) to 180° ±40° +10°/-30° 0.20 x 0.20 mm (SXGA+) 0.19 x 0.19 mm (UXGA) 4.7 W using battery 6.2 W using AC power brightness can be controlled through keyboard shortcuts Keyboard Number of keys Key travel Key spacing Layout 87 (U.S. and Canada); 89 (Brazil); 88 (Europe); 90 (Japan) 2.7 mm ± 0.3 (0.11 inch ± 0.016 inch) 19.05 mm ± 0.3 mm (0.75 inch ± 0.012 inch) QWERTY/AZERTY/Kanji Touch Pad X/Y position resolution (graphics table mode) Size: Width Height 240 cpi 64.88 mm (2.55-inch) sensor-active area 48.88-mm (1.92-inch) rectangle Track Stick X/Y position resolution (graphics table mode) Size 250 count/sec @ 100 gf protrudes 0.5 mm higher than surrounding key caps Battery Type Dimensions: Depth Height Width Weight Voltage Charge time (approximate): Computer on Computer off Operating life Life span (approximate) Temperature range: Operating Storage 8-cell "smart" lithium ion (4400 mAh) 88.5 mm (3.48 inches) 21.5 mm (0.83 inch) 139.0 mm (5.47 inches) 0.43 kg (0.95 lb) 14.8 VDC 2.5 hours 1 hour approximately 2.5 to 3 hours 400 discharge/charge cycles 0° to 35°C (32° to 95°F) -40° to 65°C (-40° to 149°F) AC Adapter Input voltage Input current (maximum) Input frequency Output current Output power Rated output voltage 90 to 135 VAC and 164 to 264 VAC 1.5 A 47 to 63 Hz 5.5 A (maximum at 4-second pulse); 4.5 A (continuous) 90 W 20.0 VDC

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Operating angle
0° (closed) to 180°
Viewing angles:
Horizontal
±40°
Vertical
+10°/–30°
Pixel pitch
0.20 x 0.20 mm (SXGA+)
0.19 x 0.19 mm (UXGA)
Power Consumption:
Panel with backlight (typical)
4.7 W using battery
6.2 W using AC power
Controls
brightness can be controlled through keyboard
shortcuts
Keyboard
Number of keys
87 (U.S. and Canada); 89 (Brazil); 88 (Europe); 90
(Japan)
Key travel
2.7 mm
±
0.3 (0.11 inch
±
0.016 inch)
Key spacing
19.05 mm
±
0.3 mm (0.75 inch
±
0.012 inch)
Layout
QWERTY/AZERTY/Kanji
Touch Pad
X/Y position resolution (graphics table mode)
240 cpi
Size:
Width
64.88 mm (2.55-inch) sensor-active area
Height
48.88-mm (1.92-inch) rectangle
Track Stick
X/Y position resolution (graphics table mode)
250 count/sec @ 100 gf
Size
protrudes 0.5 mm higher than surrounding key caps
Battery
Type
8-cell "smart" lithium ion (4400 mAh)
Dimensions:
Depth
88.5 mm (3.48 inches)
Height
21.5 mm (0.83 inch)
Width
139.0 mm (5.47 inches)
Weight
0.43 kg (0.95 lb)
Voltage
14.8 VDC
Charge time (approximate):
Computer on
2.5 hours
Computer off
1 hour
Operating life
approximately 2.5 to 3 hours
Life span (approximate)
400 discharge/charge cycles
Temperature range:
Operating
0° to 35°C (32° to 95°F)
Storage
–40° to 65°C (–40° to 149°F)
AC Adapter
Input voltage
90 to 135 VAC and 164 to 264 VAC
Input current (maximum)
1.5 A
Input frequency
47 to 63 Hz
Output current
5.5 A (maximum at 4-second pulse);
4.5 A (continuous)
Output power
90 W
Rated output voltage
20.0 VDC