Ultrastar 7K2
HGST Hard Disk Drive
Technical Reference Manual
15
Input Voltage Requirements
The input voltage requirements are +5.0V ± 5% and +12.0V ± 10%.
Ripple
+12 VDC +5 VDC
Maximum Frequency 200 mV (double amplitude) 0-30 MHz 100 mV (double amplitude) 0-30 MHz
Power Connectors and Cables
Serial ATA Connectors
For information on SATA data connectors, including the pin definitions of the SATA connectors and the
corresponding signal names and signal functions, refer to the latest SATA specification available for
download at www.serialata.org.
Cabling Requirements for Serial ATA
The SATA cable consists of four conductors in two differential pairs. The cable may also include drain
wires to be terminated to the ground pins in the SATA cable receptacle connectors. See the SATA
specification for cable specifications. The cable's maximum length is one meter.
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