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1.8.4 Altitude
Operating –300 m to 3,040 m (–1,000 ft to 10,000 ft)
Nonoperating –300 m to 12,190 m (–1,000 ft to 40,000 ft)
1.8.5 Shock
All shock specifications assume that the drive is mounted in an approved
orientation with the input levels at the drive mounting screws. The
nonoperating specifications assume that the read/write heads are posi-
tioned in the shipping zone.
Note. At power-down, the read/write heads automatically move to the
shipping zone. The head and slider assembly park inside of the
maximum data cylinder. When power is applied, the heads re-
calibrate to Track 0.
1.8.5.1 Operating shock
This drive incorporates SafeRite shock protection and can withstand a
maximum operating shock of 100 Gs without nonrecoverable data errors
(based on half-sine shock pulses of 2 or 11 msec).
1.8.5.2 Nonoperating shock
The nonoperating shock level that the drive can experience with com-
plete data recovery is 250 Gs (based on half-sine shock pulses of 2 msec
duration) or 150 Gs (based on half-sine shock pulses of 11 msec
duration). Shock pulses are defined by MIL-STD-202 F with the ampli-
tude tolerance controlled to ± 5%.
1.8.6 Vibration
All vibration specifications assume that the drive is mounted in an
approved orientation with the input levels at the drive mounting screws.
The nonoperating specifications assume that the read/write heads are
positioned in the shipping zone.
1.8.6.1 Operating vibration
The following table lists the maximum vibration levels that the drive may
experience without incurring physical damage or degradation in performance.
5–450 Hz 0.50 Gs acceleration (peak)
450–5 Hz 0.50 Gs acceleration (peak)
Marathon 810 (ST9816AG) Product Manual, August 1995 11