Seagate ST340810ACE, ST320410ACE manual Conducted noise, Voltage tolerance, Power-management modes

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U Series CE Family Product Manual, Rev. A

1.7.2 Conducted 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 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

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Contents Series CE Family Page Series CE Family Page Contents Configuring and mounting the drive ATA interfaceFigures Series CE Family Product Manual, Rev. a Introduction Specification summary table Track-to-track seek Time msec typical Altitude meters be Low mean sea level Default logical geometry LBA ModeFormatted capacity Physical characteristics Physical organizationRecording and interface technology Seek time Start/stop timesPower specifications Power consumptionPower Mode Typical Watts Typical Amps Means 12V Typical current profilePower-management modes Conducted noiseVoltage tolerance Sleep mode Environmental tolerances Ambient temperatureTemperature gradient Idle and Standby timersAltitude 3.2 Wet bulb temperatureHumidity 3.1 Relative Humidity ShockOperating vibration Nonoperating vibrationDrive acoustics Agency certification 1.12.1 Safety certification Electromagnetic immunityReliability Electromagnetic compatibility Taiwan BsmiKorean RRL FCC verification Australian C-Tick N176Configuring and mounting the drive Handling and static-discharge precautionsJumper settings Master/slave configuration Drive as master with a non-ATA-compatible slaveOptions jumper block Cable-select option Alternate capacity jumperUltra ATA/100 cable Recommended Case temperature Measurement location Drive mountingATA interface signals and connector pins ATA interfaceO pins and supported ATA signals Supported ATA commands Command name Command code in hex ATA-standard commandsATA-standard power-management commands Identify Drive commandCommand name ATA-standard security commandsWord Description 0C5AHWord Description Value Xx07HXx3FH Description if bit is set to Bit Word Bit WordSet Features command 0AH 4 S.M.A.R.T. commands Code in Features A.R.T. Command RegisterSeries CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a
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