Compaq dc7800 - Manual (Page 38)

Interface modes USB communications through USB port
SCM protocol
Automatic card insertion/removal detection
Reader performance
interface USB connection
Electro-magnetic
standards Europe 89/336/CEE guideline
USA USAFCC part 15
HP USB Gray Keyboard Physical
characteristics
Keys 104, 105, 106, 107, 109 layout (depending
upon country)
Dimensions (L x W x H) 18.0 x 6.4 x 0.98 in (45.8 x 16.3 x 2. 5 cm)
Weight 2 lb (0.9 kg) minimum
Electrical Operating voltage + 5VDC ± 5%
Power consumption 50-mA maximum (with three LEDs ON)
System interface USB Type A plug connector
ESD CE level 4, 15-kV air discharge
EMI – RFI Conforms to FCC rules for a Class B
computing device
Microsoft PC 99 – 2001 Functionally compliant
Mechanical Languages 38 available
Keycaps Low-profile design
Switch actuation 55-g nominal peak force with tactile feedback
Switch life 20 million keystrokes (using Hasco modified
tester)
Switch type Contamination-resistant switch membrane
Key-leveling
mechanisms For all double-wide and greater-length keys
Cable length 6 ft (1.8 m)
Microsoft PC 99 – 2001 Mechanically compliant
Acoustics 43-dBA maximum sound pressure level
Environmental Operating temperature 50° to 122° F (10° to 50° C)
Non-operating
temperature -22° to 140° F (-30° to 60° C)
Operating humidity 10% to 90% (non-condensing at ambient)
Non-operating humidity20% to 80% (non-condensing at ambient)
Operating shock 40 g, six surfaces
Non-operating shock 80 g, six surfaces
Operating vibration 2-g peak acceleration
Non-operating
vibration 4-g peak acceleration
Drop (out of box) 26 in (66 cm) on carpet, six-drop sequence
Drop (in box) 42 in (107 cm) on concrete, 16-drop
sequence
Approvals UL, CSA, FCC, CE Mark, TUV, TUV GS, VCCI, BSMI, C-Tick, MIC, BG
Prufzert Mark
Ergonomic compliance ANSI HFS 100, ISO 9241-4, and TUVGS
Kit contents Keyboard, installation guide, warranty card, safety and comfort guide
QuickSpecs
HP Compaq dc7800 Business PC
Technical Specifications - Input/Output Devices
DA - 12744 Worldwide QuickSpecs — Version 13 — 12.14.2007 Page 38