C
ONSTELLATION
ES S
ERIAL
ATA P
RODUCT
M
ANUAL
, R
EV
. F
18
2.9.2
Humidity
2.9.2.1
Relative humidity
Operating:
5% to 90% noncondensing (30% per hour max)
Nonoperating:
5% to 95% noncondensing (30% per hour max)
2.9.3
Altitude
Operating:
–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating:
–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
2.9.4
Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may
be applied in the X, Y or Z axis.
2.9.4.1
Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 70 Gs
(read) and 40 Gs (write) based on half-sine shock pulses of 2ms. Shocks should not be repeated more than two times per second.
2.9.4.2
Nonoperating shock
1TB and 500GB models
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when
subsequently put into operation is 350 Gs based on a nonrepetitive half-sine shock pulse of 2ms duration.
2TB models
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when
subsequently put into operation is 300 Gs based on a nonrepetitive half-sine shock pulse of 2ms duration.
2.9.5
Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws.
Vibration may be applied in the X, Y or Z axis.
2.9.5.1
Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are
specified below.
* Rotary Random Operating Vibration
2.9.5.2
Nonoperating vibration
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation in
performance when subsequently put into operation are specified below.
5–22 Hz
0.25 Gs
22–350 Hz
0.50 Gs
350–500 Hz
0.25 Gs
20 - 1500Hz
*(RROV)
12.5 rads/s
2
w/RVFF
10–500 Hz
Linear Random
4.9 Grms ref
