Environmental
R~quirements
The environmental requirements for proper operation of the HP C2486A/88A/90A Disk Drive
are listed in Table 1-4.
Table 1-4.
HP
C2486A/88A/90A Environmental Requirements
Input Power
Voltages
........................................................................
+5
V,
+12 V
Regulation
..............................................................................
±5%
(±10% tolerance allowed for +12V during start-up.)
Ripple and Noise:
+5
V
.........................................................................
<
100
mVp-p
+12 V
........................................................................
<
200
mVp-
p
Ambient
Air
Temperature
Operating
.......................................................
5°C
to
50°C (41°F to 122°F)
Nonoperating
.................................................
-40°C to 65°C (-40°F to 149°F)
(Maximum rate of change shall not exceed 20°C (36°F) per hour.)
Airflow Requirements
Narrow, Single-Ended Drives
.......................................................
3 to 5
cfm
Narrow, Differential Drives
.........................................................
3 to 5 cfm
Wide, Differential Drives
...........................................................
4 to 6 cfm
For more information:
General installation guidelines
...........................................
refer to Chapter 2
Narrow, Single-Ended Drives
...........................................
refer to Appendix E
Narrow, Differential Drives
.............................................
refer to Appendix F
Wide, Differential Drives
..............................................
refer
to
Appendix G
Relative Humidity
Operating
.............................................
8%
to
80%
with wet bulb limit of 28°C
Nonoperating (storage and shipping)
..................
5%
to
90%
with wet bulb limit
of
28°C
(Excludes all conditions which can cause condensation in or on the disk drive.)
Altitude
Operating
........................
-
305
m
(-
1,000 ft) to 3,048 m (10,000 ft) above sea level.
Nonoperating
....................
-
305
m
(-
1,000 ft)
to
15,240
IIi
(50,000 ft) above sea level.
Tilt
The disk drive will meet all performance specifications on any of the major mounting axes.
Refer to Chapter 2 for mounting instructions.
1·10 Product Specifications
DRAFT
1/18/93 09:58