IBM 7940, Руководство по диагностике и обслуживанию

Страница: 22 / 160

Table 1. Features and specifications (continued)
Acoustical noise emissions:
v
Declared sound power, idling: 6.5
bels
v Declared sound power, operating:
6.5 bels
Environment:
v
Air temperature:
– Server on: 10° to 35°C (50.0°
to 95.0°F). Altitude: 0 to 914 m
(2998.7 ft)
– Server on: 10° to 32°C (50.0°
to 89.6°F). Altitude: 914 m
(2998.7 ft) to 2133 m (6998.0
ft)
– Server off: 10° to 43°C (50.0°
to 109.4°F). Maximum altitude:
2133 m (6998.0 ft)
v Humidity:
– Server on: 8% to 80%
– Server off: 8% to 80%
v Airflow rates:
– Minimum: 34 CFM
– Maximum: 74 CFM
Heat output:
Approximate heat output in British
thermal units (Btu) per hour for dual
multiprocessor configurations:
v
Minimum configuration: 430 Btu
(126 watts)
v Maximum configuration: 1707 Btu
(500 watts)
Electrical input:
v
Sine-wave input (50-60 Hz)
required
v Input voltage low range:
– Minimum: 100 V ac
– Maximum: 127 V ac
v
Input voltage high range:
– Minimum: 200 V ac
– Maximum: 240 V ac
v
Input kilovolt-amperes (kVA),
approximately:
– Minimum: 0.126 kVA
– Maximum: 0.500 kVA
Notes:
1. Power consumption and heat output
vary depending on the number and
type of optional features installed
and the power-management
optional features in use.
2. These levels were measured in
controlled acoustical environments
according to the procedures
specified by the American National
Standards Institute (ANSI) S12.10
and ISO 7779 and are reported in
accordance with ISO 9296. Actual
sound-pressure levels in a given
location might exceed the average
values stated because of room
reflections and other nearby noise
sources. The declared sound-power
levels indicate an upper limit, below
which a large number of computers
will operate.
4
IBM System x3455 Type 7940 and 7941: Problem Determination and Service Guide