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Cheetah 18FC Product Manual, Rev. C
6.5
Electromagnetic susceptibility
As a component part, the drive is not required to meet any susceptibility performance requirements. It is the
responsibility of the system integrator to perform tests required to ensure that equipment operating in the same
system as the drive does not adversely affect the performance of the drive. See paragraph 6.2, "DC power
requirements."
6.6
Mechanical specifications
The following nominal dimensions are exclusive of the decorative front panel accessory. See Figure 4 for
detailed mounting configuration dimensions for the drive. See Figure 12 for detailed FC-AL SCA connector
dimensions.
Height
1.6 in
Width
4.00 in
Depth
5.75 in
Weight
2.0 lb
//
Figure 4.
Mounting configuration dimensions
6.7
Acoustics
Sound power during idle mode is 4.4 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 measured according to
Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on
any drive.
40.64 mm
101.6 mm
146.05 mm
0.907 kilograms
T
-Z-
S
H
R
N
-Z- -X-
A
-Z-
M
U
-X-
P
[1]
G
F
E
D
-X-
K
[1]
-Z-
L
J
B
Notes:
Mounting holes are 6-32 UNC 2B, three
[1]
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)
with minimum full thread engagement of
0.12 in. (3.05 mm).
Dimension Table
Inches
A
1.654
B
5.787
C
4.000
D
3.750
E
0.125
F
1.750
G
1.625
H
1.122
J
4.000
K
0.250
L
1.638
M
0.181
N
.040
P
1.625
R
1.618
S
0.315
T
.015
U
.015
C
Millimeters
max
42.01
max
max
147.00
max
± .010
± .25
101.60
± .010
± .25
92.25
± .010
± .25
3.18
± .010
± .25
44.45
± .020
± .50
41.28
± .020
± .50
28.50
± .010
± .25
101.60
± .010
± .25
6.35
± .010
± .25
41.60
± .020
± .50
4.60
max
1.20
max
± .020
± .50
41.28
± .003
± .08
41.10
± .040
± 1.02
7.00
max
0.38
max
max
0.38
max
23
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