1
Overview and specifications
13
Environment
The R220 is designed to operate reliably over a broad range of environments, as shown in
.
a
“Short-term” is defined as a maximum of 96 hours.
b
The term “non-condensing” is from Telcordia NEBS Requirements GR-63-Core.
c
Testing for operating vibration is based on the mass of a system and includes a fully assembled
and functional system with a fully populated mother board and no less than half of the internal
and external bays of each type populated with functional hardware.
Table 6. Environment specifications
Characteristic
State
Value
Temperature (ambient)
Operating
5
°
C to 40
°
C at a change rate of 30
°
C per hour
Short-term
a
operating
–5
°
C to +55
°
C (DC system); –5
°
C to +45
°
C (AC system) at a
change rate of 30
°
C
Storage temperature
Packaged
• –5
°
C to +55
°
C at a change rate of 30
°
C per hour maximum
Unpacked
• –40
°
C to 23
°
C at a change rate of 13
°
C per minute
• 23
°
C to 70
°
C at a change rate of 30
°
C per hour
• 70
°
C to 23
°
C at a change rate of 10
°
C per minute
• 23
°
C to –40
°
C at a change rate of 30
°
C per hour
Relative humidity
Operating
5% to 85% non-condensing
b
,
maximum wet-bulb temperature of 30
°
C
Non-operating
5% to 95% non-condensing
b
,
maximum wet-bulb temperature of 40
°
C
Short-term
a
operating
5% to 90% non-condensing
b
,
not to exceed 0.024 kg water per kg dry air
Altitude
Operating
• DC System: -5C to +55C up to 1800m; >1800m to 4000m,
derated linearly to +45C
• AC system: -5C to +40C up to 1800m; >1800m to 4000m,
derated linearly to +35C
Non-operating
–100 feet (–30 meters) to 40000 feet (12000 meters)
Shock (drop)
Unpackaged
Per GR-63-Core
Vibration
Operating
c
Swept sine at 1.0g from 5 to 100 to 5 Hz using a
0.25 octave/minute sweep rate
Non-operating (packaged)
Random vibration per GR-63-Core
5–20Hz with an input of 0.01 g2/Hz sloping
–3dB/octave from 20–200Hz
Acoustic
—
GR-63-Core
