Technical Specifications - HP Compaq dc7900 Quickspecs

QuickSpecs

Technical Specifications

Unit Environment and Operating
Conditions
General Unit Operating Guidelines
Keep the computer away from excessive moisture, direct moisture and the extremes of heat and cold, to ensure that unit is
operated within the specified operating range.
Leave a 10.2 cm (4 in) clearance on all vented sides of the computer to permit the required airflow.
Never restrict airflow into the computer by blocking any vents or air intakes.
Do not stack computers on top of each other or place computers so near each other that they are subject to each other's re-
circulated or preheated air.
Occasionally clean the air vents on the front, back, and any other vented side of the computer. Lint, dust and other foreign
matter can block the vents and limit the airflow.
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be provided on the enclosure,
and the same operating guidelines listed above will still apply.
Temperature Range
Relative Humidity
Maximum Altitude
(unpressurized)
* Operating temperature is de-rated 1.0 deg C per 300 m (1000 ft) to 3000 m (10,000 ft) above sea level, no direct sustained sunlight.
Maximum rate of change is 10 deg C/Hr. The upper limit may be limited by the type and number of options installed.
Power Supply
Standard Efficiency
Energy Efficient
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Operating Line Frequency Range
Rated Input Current
Rated Input Current with Energy
Efficient* Power Supply
Current Leakage
(NFPA 99)
System Heat Dissipation
System Heat Dissipation
with Energy Efficient* Power
Supply
Ultra-slim Desktop
Operating: 50° to 95° F (10° to 35° C)*
Non-operating: –22° to 140° F(–30° to 60° C)
Operating: 10% to 90% (non-condensing at ambient)
Non-operating: 5% to 95% (non-condensing at ambient)
Ultra-slim Desktop
N/A
135W 87% efficient
active PFC
(external)
90 – 264 VAC
100 – 240 VAC
50/60 Hz
47 – 63 Hz
N/A
1.5A
< 275 µA
N/A
Typical 133 btu/hr
(33.5 kg-cal/hr)
Maximum 549 btu/hr
(132 kg-cal/hr)
Ultra-slim Desktop
DA - 13029 Canada — Version 29 — March 7, 2011
HP Compaq dc7900 Business PC
Small Form Factor
Operating: 10,000 ft (3048 m)
Non-operating: 30,000 ft (9144 m)
Small Form Factor
240W standard efficiency
active PFC
240W 85% efficient
active PFC
90 – 264 VAC
100 – 240 VAC
50/60 Hz
47 – 63 Hz
4A
3.5A
< 275 µA
Typical 198 btu/hr
(50 kg-cal/hr)
Maximum 1260 btu/hr
(318 kg-cal/hr
Typical 150 btu/hr
(38 kg-cal/hr)
Maximum 1024 btu/hr
(258 kg-cal/hr)
Small Form Factor
Convertible Minitower
Convertible Minitower
365W standard efficiency
active PFC
365W 85% efficient
active PFC
90 – 264 VAC
100 – 240 VAC
50/60 Hz
47 – 63 Hz
6A
5A
< 450 µA
Typical 222 btu/hr
(56 kg-cal/hr)
Maximum 1916 btu/hr
(483 kg-cal/hr)
Typical 171 btu/hr
(43 kg-cal/hr)
Maximum 1557 btu/hr
(392 kg-cal/hr)
Convertible Minitower
Page 25