Air Cooling Requirement
The host system must provide sufficient air flow across the drive to maintain the temperature at
less than 60 degrees Centigrade (measured at the center of the drives' top cover).
Operating Vibration
Due to the complexity of this subject, we recommend that users contact the Distributor to discuss
how to perform the necessary measurements if they believe this to be an area which requires
evaluation.
Nonoperating Vibration
The Drive will withstand the following continuous vibration levels with no degradation in
performance: 2 - 200Hz @ 0.5G peak acceleration (for a resonance search). Resonance points:
1.5G peak acceleration (for 15 minutes).
Operating Shock
The Drive will withstand (with no permanent damage or loss of data) a 10G half-sine wave shock
pulse of 11mS duration.
Nonoperating Shock
The Drive will withstand (with no permanent damage or loss of data) a 75G half-sine wave shock
pulse of 11mS duration.
DC Power Requirements
Nominal Supply Voltages +5 Volts +12 Volts
Maximum Ripple (0-10 MHz) 100mV p-p 200mV p-p
Voltage Supply Tolerance (Including Ripple) +/-5% +10%/-8%
Power Supply Current Amps +5 Volts +12 Volts
* Startpeak 0.5 0.93
* Idle Average 0.3 0.12 (WD-L80)
0.13 (WD-L160)
* Random R/W 0.3 0.14 (WD-L80)
0.15 (WD-L160)
Random R/W = 40% random seek +40% read/write (1 write in 10 reads) +20% idle
Signal Definition
The pin assignments of interface signal are listed as follows:
PIN Signal I/O PIN Signal I/O
01 -HRESET I 02 GND
03 HD07 I/O 04 HD08 I/O