Apple Mac Pro Computer Manuel d'utilisateur télécharger pdf (Page 75)

Appendix A Specifications 75

Analog audio line out (typical values)

Based on a typical situation with playback of 1 kHz, -3dBFS 24-bit sine wave, 44.1 kHz

output sample rate into 100 kilohms unless otherwise specified below.

Â Output voltage: 1.6 V

rms

(+6.3 dBµ)

Â Output impedance: 24 ohms

Â Signal-to-noise ratio: Greater than 90 dB

Â Total harmonic distortion + noise: Less than -85 dB (.01 percent)

Â Channel separation: Greater than 90 dB

Power Supply

AC line input

Â Voltage ranges: 100–240 V alternating current (AC)

Â Current: Maximum of 12 A (low voltage range) or 6 A (high voltage range)

Â Frequency: 50–60 Hz

Power Requirements for Expansion Cards and Peripherals

Expansion cards

Combined maximum power consumption for all four PCI Express slots should not

exceed 300 watts (W).

USB devices

Each of the computer’s built-in USB ports is allotted 500 mA.

FireWire devices

The computer can provide up to 28 W total to the FireWire ports.

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Apple Mac Pro Computer Manuel d'utilisateur Page 75