Hitachi DK23FB-60 - Travelstar 60 GB Specifications page 14

*1 :Average time of seek is calculated under the following condition. (Read/Write ratio: Read only)
Average of 10,000 random seeks, Voltage 5.0V, Temperature 25°C.
Maximum time of seek is calculated under the following condition.
Average of 1,000 full stroke seeks, Voltage 5.0V, Temperature 25°C.
This maximum time is not included the seek time by seek retry.
*2 :Periodically, during start up, the drive may perform a spin up retry operation. When this operation occurs,
the start up sound will change slightly and the ready timing will also be altered from typical time.
*3 :Power on to Ready time could take up to 10 seconds in case of spin up retries under certain
conditions of the voltage specifications(Table 3.1) and environmental specifications(Table 3.2).
*4 :For DC power input, the average current is measured at the connector of the PCBA of this drive and in
the nominal condition in which the power voltage and the temperature are 5.0V and 25°C, respectively.
The DC power input has to be burst free (common mode). The average current may have some
tolerance after power-on. The current
measurement is recommended at 5 minutes later after power-on.
Caution
Voltage rise time 5 - 100 ms at power on is required for power supply. The power
supply voltage must not be under –0.3V at power off.
This product is required over current protection for possible combustion due to
Caution
be prepared
by the system. The requirement of the current limitation is max. 10 A for the
protection.
*5 :For more information, refer to Section 6.1.
*6 :This value is at Low Power Idle mode. The heads are unloaded.
*7 :Power mode automatically enters to Low Power Active mode after Read/Write operation. Head position is
kept on the same track before this power transition.
*8 : Measured during random seek at the rate of three seeks per 100 msec.
*9 :Measured while reading or writing 16 sectors of data located on the same track.
K6610007
Rev.5
02.14.'03
circuit or component failure. Secondary over current protection shall
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