HP C2246 Technical Reference Manual page 19

Environmental Requirements
The environmental requirements for proper operation of the HP C2244/45/46/46 Disk Drive
are listed in Table 1-4.
Table 1·4. HP C2244/45/46/47 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
L./
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
1
000 ft) to 15,240 m (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.
Product Specifications 1-9