Apple 17-INCH Sound Outputs, Built-in Microphone, Audio Input Jack, Modem Activity Sound Signals

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CHAPTER 3

Devices and Ports

Built-in Microphone

The built-in microphone is located at the bottom of the left speaker grill.

The sound signal from the built-in microphone goes through a dedicated preamplifier that raises its nominal 30 mV level to a nominal 150 mV (peak-to-peak) signal to the sound circuitry. That signal level assures good quality digitizing without driving the analog input into clipping.

Audio Input Jack

The audio input jack is a 3.5 mm mini phone jack that accepts line-level stereo signals. It also accepts a stereo miniplug-to-RCA cable adapter for connecting stereo equipment to the computer.

The sound input jack signal connections are

●tip: audio left channel

●ring: audio right channel

●sleeve: audio ground

Modem Activity Sound Signals

Modem activity sound signals from the communications slot are sent to the Snapper sound circuitry as 8-bit digital data.

Sound Outputs

The sound system sends sound output signals to the built-in speakers and the external sound output jack.

Headphone Jack

The headphone jack is located on the left side of the computer. The headphone jack provides enough current to drive a pair of low-impedance headphones. It can also be used as a line-level output.

The headphone jack has the following electrical characteristics:

●impedance suitable for driving standard 32-ohm headphones

●output level 2.0 V peak-to-peak (1.41 V RMS)

●signal-to-noise (SNR) 90 dB unweighted (typical)

●total harmonic distortion (THD) 0.03% or less

50Sound System

Legacy Document 2003-03-01 © 2003 Apple Computer, Inc. All Rights Reserved.

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Contents PowerBook G4 17-inch 2003-03-01Apple Inc Contents Expansion Features Abbreviations Contents Figures and Tables Removing RAM expansion slot cover Introduction to PowerBook G4 17-inch Organization of This DocumentIntroduction Overview of PowerBook G4 17-inch PowerBook G4 17-inch FeaturesAppearance 1Front view of the computer Open Firmware Peripheral DevicesSystem Software Computer IdentificationOperating Modes Power Saving FeaturesReduced Processor Performance Overview of PowerBook G4 17-inch System Software Block Diagram and Buses Block DiagramMain ICs and Buses PowerPC G4 MicroprocessorMicroprocessor and Caches Level 3 Cache Intrepid Controller and BusesLevel 2 Cache Bus Destinations Width of data pathSystem RAM Boot ROMFireWire Controllers Ethernet ControllerController DMA SupportUltra ATA-100 Interface Interrupt SupportUSB Interface ATA-33 InterfaceAirPort Extreme Interface Power ControllerSound Circuitry CardBus Controller IC USB Ports USB ConnectorsPin Signal name VCCUSB Storage Devices FireWire PortsFireWire 400 Connector FireWire 800 Connector Pin Signal name DescriptionTPA R TPB RPin Signal name Signal definition Booting from a FireWire DeviceTarget Disk Mode Ethernet PortInternal Modem RXNAirPort Extreme Data SecurityAirPort Extreme Software Bluetooth TechnologyAirPort Extreme Hardware Hard Disk Dimensions Hard Disk DriveHard Disk Connector 4Maximum dimensions of the internal hard diskSignal Assignments Pin number Signal nameATA Signal Descriptions Signal name Signal descriptionSuperDrive DVD-R /CD-RW Media type Reading speed maximum Writing speedMedia type Reading speed maximum TrackpadKeyboard Changing the Operation of the Keyboard Keyboard Illustrations7Alternate operations of function and control keys Keyboard 8Embedded numeric keypad operation Keyboard Function Keys Using the Fn KeyUsing the Num Lock Key Key name Control buttonKey name Control button F10 Embedded KeypadOther Control Keys Keypad functionBlack margins Flat-Panel DisplayPicture size External Monitors Dual Display and Mirror ModeAnalog Monitor Resolutions Frame rateDigital Display Resolutions DVI-I Connector15Main signals on the DVI-I connector Picture size Pixel depth 512 by 24 bpp Pin number Video output connectorExternal Video Port Sound System Sound InputsBuilt-in Microphone Modem Activity Sound SignalsSound Outputs Audio Input JackDigitizing Sound Internal SpeakersDevices and Ports Sound System Accessing the RAM Slots RAM Expansion SlotsMechanical Design of DDR RAM SO-DIMMs Electrical Design of DDR RAM SO-DIMMsConfiguration of DDR RAM SO-DIMMs DDR Sdram DevicesDevice size RAM SO-DIMM Electrical LimitsAddress Multiplexing CardBus Slot Expansion Features CardBus Slot 3D Graphics PowerPC G4 MicroprocessorApple Technical Notes Kit Velocity Engine AltiVecMac OS Open FirmwareRAM Expansion Modules PC Card ManagerUSB Interface FireWire InterfaceATA Devices Digital Visual Interface Wireless NetworksBluetooth Supplemental Reference Documents Bluetooth Abbreviations and Standard Units Other AbbreviationsCAS AsicATA CD-ROMLED ISOJedec MDITmds SO-DIMMSPD USB

17-INCH specifications

The Apple 17-inch model has garnered attention for its impressive balance of performance and portability, making it a popular choice among professionals and creative users alike. Boasting a sleek design, it combines cutting-edge technologies with user-friendly features that enhance productivity and entertainment experiences.

At the heart of the 17-inch display is Apple's Retina technology, which provides stunning visual clarity and vibrant colors. With a resolution that surpasses traditional screens, users can expect crisp text and detailed images, making it an ideal choice for graphic designers, video editors, and anyone who values high-quality visuals. The large screen size creates an immersive experience, especially useful for multitasking, viewing spreadsheets side by side, or editing documents side by side.

Powered by Apple’s latest custom silicon, the 17-inch model delivers remarkable performance. The optimizations in the chip architecture enhance not only processing speeds but also energy efficiency, allowing users to accomplish more without compromising battery life. These advancements in chip technology together with integrated graphics offer smooth performance during intensive tasks such as rendering high-definition graphics or playing demanding games.

The laptop also comes equipped with a robust battery system designed to keep users productive for extended periods. Users can expect several hours of usage on a single charge, ensuring that they can work or enjoy media without the constant need to recharge. Furthermore, fast-charging capabilities minimize downtime, making it convenient for on-the-go professionals.

In terms of connectivity, the 17-inch model offers multiple Thunderbolt and USB-C ports, allowing for quick data transfer and connecting a variety of external devices. This versatility is essential for professionals who may need to hook up to external monitors or utilize peripherals for enhanced functionality.

The built-in audio system features high-fidelity speakers, delivering an outstanding audio experience for music, movies, and video conferencing. The integration of advanced microphones further enhances clarity during calls, making communication seamless.

Overall, the Apple 17-inch laptop stands out as a powerful tool designed for those who demand performance, quality, and flexibility in their devices. With its blend of stunning visuals, powerful processing capabilities, and user-centric features, it remains a strong contender in the market for those seeking a reliable and stylish computing solution.
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