2.6Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:
•
•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.
Typical seek times (msec) | Read | Write |
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<0.8 | <1.0 | |
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Average | <11.0 | <12.0 |
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Average latency | 4.16 | 4.16 |
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Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as
2.7Start/stop times
16 (max) | |
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Standby to Ready (sec) | 16 (max) |
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Ready to spindle stop (sec) | 10 (max) |
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2.8Power specifications
The drive receives DC power (+5V or +12V) through a
2.8.1Power consumption
Power requirements for the drives are listed in the table on page 11. Typical power measurements are based on an average of drives tested, under nominal conditions, using +5.0V and +12.0V input voltage at 25°C ambi- ent temperature.
•Spinup power
Spinup power is measured from the time of
•Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power represents the worst- case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for
•Read/write power and current
Read/write power is measured with the heads on track, based on a
•Operating power and current
Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.
•Idle mode power
10 | DB35.3 Series PATA Product Manual, Rev. B |
