Temperature Gradient; Altitude; Relative Humidity; Shock And Vibration - Seagate Medalist 1270 Product Manual

Medalist 1270 Product Manual, August 1995

1.13.2 Temperature gradient

Operating
Nonoperating

1.13.3 Altitude

Operating
Nonoperating

1.13.4 Relative humidity

Operating
Maximum operating
gradient
Nonoperating

1.14 Shock and vibration

All shock and vibration specifications apply when the drive is mounted
as recommended in Section 2.5 on page 23, with the input levels
measured at the drive mounting screws. Shock measurements are based
on an 11 msec, half sine wave shock pulse, not to be repeated more than
twice per second.
During normal operating shock and vibration, there is no physical dam-
age to the drive or performance degradation. During nonoperating shock
and vibration, the read/write heads are positioned in the landing zone.
During abnormal operating shock and vibration, there is no physical
damage to the drive, although performance may be degraded during the
shock or vibration episode. When normal operating shock levels resume,
the drive meets its performance specifications.
Operating
Shock 2 Gs
5–22 Hz vibration 0.020-inch
displacement
22–400 Hz vibration 0.50 Gs
20 ° C per hour (36 ° F per hour)
30 ° C per hour (54 ° F per hour)
–1,000 ft to 10,000 ft (–305 m to 3,048 m)
–1,000 ft to 40,000 ft (–305 m to 12,192 m)
8% to 80% noncondensing
Maximum wet bulb 26 ° C (79 ° F)
10% per hour
5% to 95% noncondensing
Maximum wet bulb 26 ° C (79 ° F)
Abnormal
10 Gs
0.030-inch
displacement
0.75 Gs
13
Nonoperating
75 Gs
0.160-inch
displacement
4.00 Gs