HP 6738 (US) manual Voltage tolerance, Power-management modes, Power Modes Heads Spindle Buffer

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U Series 5 Family Product Manual, Rev. B

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.

•Using 12-volt power, the drive is expected to operate with a maximum of 200 mV peak-to-peak square-wave injected noise at up to 10 MHz.

•Using 5-volt power, the drive is expected to operate with a maximum of 150 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal volt- age by the typical RMS read/write current.

1.7.3 Voltage tolerance

Voltage tolerance (including noise): 5V ± 5% and 12V ± 10%

1.7.4 Power-management modes

The drive provides programmable power management to provide great- er energy efficiency. In most systems, you can control power manage- ment through the system setup program. The drive features the following power-management modes:

Power Modes

Heads

Spindle

Buffer

 

 

 

 

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle

Tracking

Rotating

Enabled

 

 

 

 

Standby

Parked

Stopped

Enabled

 

 

 

 

Sleep

Parked

Stopped

Disabled

 

 

 

 

•Active mode

The drive is in Active mode during the read/write and seek operations.

•Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest.

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Contents Series 5 Family Series 5 Family Page Contents ATA interface Configuring and mounting the driveFigures Series 5 Family Product Manual, Rev. B Introduction Specification summary table ST340823A ST330621A Wet bulb tempera Ture C max Formatted capacity Default logical geometryLBA Mode Recording and interface technology Physical characteristicsPhysical organization Start/stop times Power specificationsSeek time Power consumption Conducted noise Power Mode Typical Watts Typical Amps RMS 12VTypical current profile Power Modes Heads Spindle Buffer Power-management modesActive mode Idle modeTemperature gradient Environmental tolerances Ambient temperatureSleep mode Idle and Standby timers3.1 Relative Humidity 3.2 Wet bulb temperatureAltitude ShockDrive acoustics Nonoperating vibrationReliability Electromagnetic immunityKorean RRL Agency certification Safety certificationElectromagnetic compatibility Australian C-Tick N176 FCC verificationHandling and static-discharge precautions Configuring and mounting the driveOptions jumper block Jumper settings Master/slave configurationDrive as master with a non-ATA-compatible slave Ultra ATA/100 cable Cable-select optionAlternate capacity jumper Drive mounting Mounting dimensions-top, side and end viewATA interface ATA interface signals and connector pinsO pins and supported ATA signals Command name Command code in hex ATA-standard commands Supported ATA commandsCommand name Identify Drive commandATA-standard power-management commands ATA-standard security commands0C5AH Word DescriptionXx07H Word Description ValueXx3FH Bit Word Description if bit is set to Bit WordSet Features command 0CH 4 S.M.A.R.T. commandsCode in Features A.R.T. Command Register Page
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