Seagate 810 Altitude, Shock, Operating shock, Nonoperating shock, Vibration, Operating vibration

Marathon 810 (ST9816AG) Product Manual, August 1995 11

1.8.4Altitude

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)

1.8.5Shock

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.

1.8.5.1Operating 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).

1.8.5.2Nonoperating 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%.

1.8.6Vibration

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.

1.8.6.1Operating 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)