Specifications
,
1·3
DC Voltage Requirements: .
± 12 Vdc ± 5% .75 A typical (3.9 A max starting
for
10
sec)
(2.7 A max starting with low power
option)
±
·5
Vdc ± 5% 1.6 A typical (2.4 A
max)
I .
Relative
Humidity:
Operating -
8%
to 80%
Non-operating - 1%
to
959.»
Maximum
Wet
Bulb:
Operating - 78°F (25.6°C) non-eondenslng
Non~operatlng
- Non-eondenslng
I
. ,
20,000
Power-on
Houn
typical
usage
None
Required
12
minutes
(PCB
only)
5
yean
d. Provide a contaminant-free environment.
c. Read
and
write data.
b.
Position the heads over the
seleded
track.
1.4.1 General
Oper.dOD
The 706/712 fixed disk drives consist of read/writ., heada, read/write and
con;ol
electronics,
track
positioning
mechanisms, media,
and
air filtration systems. TheM components perform
the
foUowing functions:
a.
Interpret
and
generate control signals.
1.4
FUNCTIONAL CHARACTERISTICS
Mean
Time
Between Failure:
Preventive Maintenance:
Mean
Time
to Repair:
Component
ute:
Heat
Dissipation
=86 BTU/hr typical (18.4
watts)
1.3.4
Reliability Speclflcatlona
Elevation:
.
Operating -
0 to 10,000
ft
(0
to 3048
m)
Non-operating - -1.000
to
30,000
ft
(-305 to 9144 m)
Acoustic
Noise:
Less
than 50
dbA
at 3.3 It (1.0
m)
Shock:
Operating - 10 G
max
(11
msec
half
sine
wave)
Non-operating - 40 G
max
(11
msec
half
sine
wave)
Vibration:
Operating:
5 - 17
Hz
= 0.036 In
17
- 150
Hz
= 0.55 G
200 - 500
Hz
::
0.25 G
Non-operating:
5 - 22
Hz
= 0.50 G
44-
500
Hz
=2.00 G
Environmental Umtts:
Host
Ambient
Temperature:
Operating - 41° to 113°F (5° to
45°C)
Non-operating - _40° to 140°F (_40° to
60°C)
Temperature
Gradient:·
.
Operating - 10°F
(5.~OC)
per
1/2
hour
Non-operating -
212°F (100°C)
per
hour non-condenllng
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