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General Troubleshooting Guide (Continued)
USB
USB = Universal Serial Bus
USB is the simple way to connect peripherals to your computer. It can be used to attach a wide
variety of devices like scanners, cameras, keyboards, mice, speakers,printer ..etc.
Useing USB devices (Operating Systems support USB) :
It depends on two things: hardware and software.
Hardware
: You need a USB port in your computer. This can either be built in (most PC's build in
1999 and Apple's iMac) or from a plug in card. A number of venders sell PCI and CardBus USB
adapters which can add USB capabilities to your older computer.
Software-wise
for Wintel computers, you need either
Windows 98, Windows 95 OSR 2.1
(although Windows 98 has better USB support than Windows 95),
Windows 2000
. For Apple
Macintosh computers you need
MacOS 8.1 or later
.
USB automatically determines resources (like driver software and bus bandwidth)
required by peripherals.
USB makes necessary resources available without user intervention.
It is designed to meet Microsoft Plug and Play (PnP) specification, meaning users can install,
and hot-swap devices without long installation procedures and reboots.
It allows 127 devices to run at the same time on the bus.
USB bus provides two types of data transfer speed -- 1.5Mbps and 12Mbps
and it can provide a maximum of 500mA of current to devices attached on the bus.
Universal means all peripherals share the same connector.
Serial simply defines devices can daisy chain together.
Universal Serial Bus 1.1, the de facto external connectivity standard for Mac and PC,
has picked up the speed after its slow adoption by peripheral manufacturers, users and PC OEMs.
USB 2.0 :
Drafted by Compaq, Hewlett Packard, Intel, Lucent, Microsoft, NEC and Philips,
USB Specification version 2.0 will increase device data throughout
up to 480Mbps, 40 times faster than USB 1.1 devices.
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Страница 33: ...32 Hudson2 200P3 9 Go to cover page Schematic PWB Components side view ...
Страница 34: ...9 Go to cover page 32 Hudson2 200P3 Schematic PWB Compohnents side view ...
Страница 36: ...9 Go to cover page 33 Hudson2 200P3 Schematic PWB Copper track side view ...
Страница 39: ...9 Go to cover page 36 Hudson2 200P3 Schematic diagram TMSD RX TMDS Transmitter ...
Страница 40: ...37 9 Go to cover page Hudson2 200P3 Schematic diagram VIDEO Video Decoder ...
Страница 45: ...9 Go to cover page 42 Hudson2 200P3 Schematic diagram POWER SUPPLY ...
Страница 47: ...43 9 Go to cover page Hudson2 200P3 Power Board C B A copper track smc side view ...
Страница 50: ...46 9 Go to cover page Hudson2 200P3 Schematic diagram AUDIO AMP MIC PREAMP ...
Страница 51: ...9 Go to cover page 47 Hudson2 200P3 Schematic diagram AUDIO PWR KEYPAD ...
Страница 54: ...9 Go to cover page 50 Hudson2 200P3 Inverter Diagram PWB AMBIT ...
Страница 70: ...66 Hudson2 200P3 Go to cover page CA110 Application Continued ...