Compaq DS20 manual Clearances Operating Service

AlphaServer DS20 Pedestal–Rackmount Windows NT

System Specifications

Shipping Dimension

Height	60 cm (23.8 in.)
Width	43 cm (16.9 in)
Depth	65 cm (25.6 in)
Weight	43 kg (95 lb) typical
	71 kg (156 lb) maximum
Installed Dimensions
Height	46 cm (18.1 in.)
Width	35.8 cm (14.1 in.)
Depth	58.6 cm (23.1 in.)
Weight	39 kg (86 lb) typical
	51 kg (113 lb) maximum
Clearances	Operating	Service
Front	75 cm (29.5 in.)	75 cm (29.5 in.)
Rear	15 cm (6 in.)	75 cm (29.5 in.)
Sides	None	75 cm (29.5 in.)
Environmental
Temperature	Operating*	10￿40° C (50 ￿104° F)
	Rate of change	11° C/hr (20° F/hr)
	Nonoperating	-40 66° C (-40 151° F)
	Storage (60 days)	-40￿66° C (-40 ￿151° F)
	Rate of change	20° C/hr (36F/hr)
Relative humidity	Operating	10–90%
	Nonoperating	10–95%
	Storage (60 days)	10–95%
	Rate of change	20%/hr
Maximum wet bulb temperature	Operating	28° C (82° F)
	Storage (60 days)	46° C (115°F)
Minimum dew point temperature	Operating	2° C (36° F)
	Storage (60 days)	Not tested
Maximum heat dissipation	Current
Dual supply	4097 Btu/hr
Air flow and quality	Intake location	Front
	Exhaust location	Rear
	Particle size	N/A
	Concentration	N/A
Altitude	Operating†	3048 m (10,000 ft)
	Nonoperating	12192 m (40,000 ft)
Mechanical shock	Operating	10 G 10 ms
	Nonoperating	20 G peak 30 ms
Vibration	Operating	10-500 Hz .1 G peak
	Nonoperating	1.03Grms 5-300Hz
Acoustics		AverageDeclared
	Operating	5.7 LwA, B 38 LpAm, dba
	Idle	5.6 LwA, B 37 LpAm, dba
Electrical—Power Supplies are universal, PFC, auto Ranging, 100/240 Vac
Nominal ac voltage	100-120 Vac	220-240 Vac
Operating Voltage range	90-128 Vac	180-256 Vac
Power source phase	Single	Single
Nominal frequency	60 Hz	50 Hz
Frequency range	59-61 Hz	49-51 Hz
Maximum inrush current per line core	11 Amps	22 Amps
RMS current (maximum)	12 Amps	5 Amps
Single power supply (Single cord set)	7.4 Amps each supply	3.7 Amps each supply
Dual power supply (Multiple cord set) 11.7 Amps @ 100Vac		4.9 Amps @ 220Vac
RMS current (typical)	9.3 Amps @ 120Vac	4.4 Amps @ 240Vac
Power cord	Type	IEC 320 C13
	Length	190 cm (75 in.)
	U.S. plug	NEMA 5-15

Alpha Servers 2.17