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3-4. ENVIRONMENTAL CONSIDERATIONS
3-4-1. Reliability and Maintainability
Preventive Maintenance (PM)
Meantime between failures (MTBF)
Meantime to repair (MTTR)
Component life
Media life
Diskette Interchange
Soft Read Error
Hard Read Error
Seek Error
3-4-2. Environmental limits
Temperature
Operating:
Non-Operating:
Humidity
Operating:
Non-Operating:
Vibration
Operating:
Non-Operating:
Shock
Non-Operating:
Not Required
8000 POH
30 min.
5 years
more than 1.0 x 10
6
passes/track
30,000 times
1 per 10
9
bits read
1 per 10
12
bits read
1 per 1 0
6
seeks
40
0
F to 115
0
F (50 C to 45
0
C)
-40
0
F to 140
0
F (_40
0
C to 60
0
C)
(When OA-D30V is set in a box, this temperature means the
ambient temperature of OA-D30V in the box.
And Tem-
perature cycling shall not result in condensation.)
20
%
to 80
%
relative humidity, with a wet bulb temperature
of 85
0
F (29
0
C) and no condensation.
5
%
to 95
%
relative humidity and no condensation.
The· unit shall perform all read/write operations (no seek)
according to specifications, with continuous vibration of
less than
.5
G (±10
%),
from 5 Hz to 100 Hz
(along the x, y, z plane).
The unit when packed for shipment shall withstand ±2.0 G
from 5 Hz to 100 Hz along each of the three mutually per-
pendicular axes.
The unit when unpacked shall withstand 60 G.
-8-
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