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U8 Family Product Manual, Rev. B

•Seek Mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power rep- resents the worst-case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.

•Read/Write power and current

Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-msec delay.

•Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive inactive.

•Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

•Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write electronics are in power- down mode.

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HP 4553Z (US) manual Seek Mode, Read/Write power and current, Operating power and current, Idle mode power, Standby mode
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6573Z (US) specifications

The HP 8566C, 6573Z, 6647, 6671, and 6641 are examples of cutting-edge test equipment from Hewlett-Packard, now known as Agilent Technologies. Each of these models serves essential functions within the realm of RF and microwave signal analysis, tailored to meet the demands of engineers and technicians in various industries, including telecommunications, aerospace, and electronics.

The HP 8566C is a signal analyzer that provides comprehensive analysis, particularly useful for multi-channel and high-frequency signals. A notable feature of this model is its frequency range, which spans from 0.1 Hz to 26.5 GHz, making it suitable for a wide variety of applications. The instrument's advanced capabilities such as phase noise measurement, frequency response analysis, and spectrogram displays cater to precise and complex signal characterizations. The built-in tracking generator further enhances its utility, enabling users to test filters, amplifiers, and antenna systems efficiently.

On the other hand, the HP 6573Z is a precision DC power supply that is critical for testing and characterizing devices under various power conditions. It delivers high accuracy and stable output across a wide range of voltage and current options. This model integrates features like programmable voltage and current limits, allowing for customized test scenarios, essential for designers needing reliable power sources during the prototyping phase.

The HP 6647 and 6671 models are versatile electronic loads, primarily designed for battery testing and power supply validation. They support various testing modes, including constant current, constant voltage, and constant resistance modes, which provide flexibility for power electronics engineers. Their robust measurement capabilities allow for detailed analysis of response characteristics, load transients, and efficiency metrics.

Lastly, the HP 6641 complements this lineup by offering high-performance test equipment with similar applications in power electronics. It features intuitive interfaces and advanced programming capabilities, enabling streamlined automation of test procedures.

In conclusion, the HP 8566C, 6573Z, 6647, 6671, and 6641 collectively embody sophisticated testing capabilities in signal analysis and power electronics. Their features, ranging from high-frequency performance to accuracy in power delivery, make them indispensable in the modern technological landscape. These instruments support continuous innovation while ensuring the reliability of devices that are critical to both consumer and industrial sectors.
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