U8 Family Product Manual, Rev. B

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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. The drive accepts all commands and returns to Active mode any time disc access is necessary.

Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Active mode with all current translation parameters intact.

Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

1.8 Environmental tolerances

1.8.1 Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions. Rec- ommended measurement locations are shown in Figure 3 on page 20.

Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet (3,048 meters).

Operating

0° to 60°C (32° to 131°F)

Nonoperating

–40° to 70°C (–40° to 158°F)

1.8.2 Temperature gradient

Operating/Nonoperating 20°C/hr (36°F/hour) max, without condensation

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HP 6641 (LA) Environmental tolerances 1.8.1 Ambient temperature, Temperature gradient, Sleep mode, Idle and Standby timers

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.

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