Seagate ST340015A manual Conducted noise, Voltage tolerance, Power-management modes, Active mode

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12	Barracuda 5400.1 Product Manual, Rev. G

2.9.2Conducted noise

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 120 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 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

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

2.9.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 10%

2.9.4Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management 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

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Contents Page Page Page Page Contents Seagate Technology support services Barracuda 5400.1 Product Manual, Rev. GList of Figures Barracuda 5400.1 Product Manual, Rev. G Introduction Barracuda 5400.1 Product Manual, Rev. G Drive specifications Specification summary tableDrive specification ST340015A 50,000 Humidity SeaShield Physical organization Default logical geometryLBA mode Physical characteristics ATAPower specifications Seek timeStart/stop times Typical seek times msec Read WriteBarracuda 5400.1 Product Manual, Rev. G Power consumption Spinup powerSeek mode Read/write power and currentBarracuda 5400.1 Product Manual, Rev. G Typical 5V startup and operation current profile Power-management modes Active modeIdle mode Conducted noiseEnvironmental specifications Ambient temperature Sleep modeIdle and Standby timers Temperature gradient Wet bulb temperatureHumidity Relative humidity AltitudeBarracuda 5400.1 Product Manual, Rev. G Shock Operating shockNonoperating shock VibrationAcoustic mode AcousticsFluid Dynamic Bearing FDB motor acoustics Model Idle Quiet seek Performance seekReliability Performance Reference Test Description Level StandardKorean RRL Agency certification Safety certificationElectromagnetic compatibility FCC verification Barracuda 5400.1 Product Manual, Rev. G Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationDrive as master with a non-ATA-compatible slave Cable select optionUltra ATA/100 cable Drive mountingMaster SlaveMounting dimensions-top, side and end view Barracuda 5400.1 Product Manual, Rev. G ATA interface signals and connector pins ATA interfaceO pins and supported ATA signals Command name Command code in hex ATA-standard commands EC HCommand name Command code in hex Identify Device command ATA-standard security commandsWord Description Value 0C5AHXxxxH Xx3FH Description if bit is set to Bit Set Features command 0CHF1H Report full capacity available 4 S.M.A.R.T. commands Code in features Register A.R.T. commandSeagate Technology support services Online Services Internet MySeagate40Barracuda 5400.1 Product Manual, Rev. G Automated Phone ServicesPresales, Technical Support and Customer Service USA/Canada/Latin America Support Services Call Center Toll-free Direct dialAmericas Americas Seagate †Call Center European Support ServicesAfrica/Middle East Support Services Asia/Pacific Support Services Barracuda 5400.1 Product Manual, Rev. G Index GMR Barracuda 5400.1 Product Manual, Rev. G 48Barracuda 5400.1 Product Manual, Rev. G Page Seagate Technology LLC

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