Acoustics; Electromagnetic Susceptibility; Mechanical Specifications - Seagate ST3146855LC - Cheetah 146.8 GB Hard Drive Product Manual

6.4.7

Acoustics

Sound power during idle mode shall be 3.7 bels typical when measured to ISO 7779 specification. Sound
power while operating shall be 4.3 bels typical when measured to ISO 7779 specification.
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea-
sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the
masking noise on any drive.
6.4.8

Electromagnetic susceptibility

See Section 2.1.2.
6.5

Mechanical specifications

The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions
of the front panel are shown in figure below. Refer to Figures 8 and 9 for detailed mounting configuration
dimensions. See Section 8.4, "Drive mounting."
Height (max):
Width (max):
Depth (max):
Weight (max):
REF
S
// T -Z-
[1]
H
R REF
A
-Z-
M
U -X-
P
F
[1]
E
Figure 8. LW mounting configuration dimensions
34
1.028 in.
4.010 in.
5.787 in.
1.85 pounds
K
-Z-
L
J
B
Notes:
[1]
Mounting holes are 6-32 UNC 2B, three
on each side and four on the bottom.
Max screw penetration into side of drive
is 0.15 in. (3.81 mm). Max screw
tightening torque is 6.0 in-lb (3.32 nm)
V
with minimum full thread engagement of
C
0.12 in. (3.05 mm).
-X-
A
B
C
D
E
F
H
J
K
L
M
P
R
S
T
U
V
D
26.11 mm
101.85 mm
146.99 mm
0.839 kilograms
Dimension Table
Inches Millimeters
1.028 max 26.10 max
5.787 max 147.00 max
4.000 ± .010 101.60 ± .25
3.750 ± .010 95.25 ± .25
.125 ± .010 3.18 ± .25
1.750 ± .010 44.45 ± .25
1.122 ± .020 28.50 ± .50
4.000 ± .010 101.60 ± .25
.250 ± .010 6.35 ± .25
1.638 ± .010 41.60 ± .25
.181 ± .020 4.60 ± .50
1.625 ± .020 41.28 ± .50
1.816 46.13
.315 8.00
.015 max 0.38 max
.015 max 0.38 max
.265 ± .010 6.73 ± .25
Cheetah 15K.5 SCSI Product Manual, Rev. H