Technical Data for USB Type LED Tower Light
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Technical Data for USB Type LED Tower Light Can be connected to the USB port of your PC without any additional power supply • The LED tower light that is fully controllable by the PC application program of a PC via a USB port connection • The USB communication cable is comprise of VCC, D-, D +, GND, and Shield • Uses 2 DC 5V/500mA rated Personal Computer (PC) USB for its power • Available on hosts that support USB 1.1 or higher • Provides MS Runtime libraries for developers to utilize on various PC applications ' " • Built-in 8-polyphonic clear melody, alarm sound, the type of sound can be chosen when ordered • Supported OS: WINDOWS XP / WINDOWS 7 (32bit / 64bit) • Supported Program: VC++, VB, Delphi(32bit), C#(64bit) LED Lamp Driver Circuit Buzzer Circuit SMPS(Switching Mode Power Supply) Qlight's USB Tower Light is a LED tower lamp connected to a USB interface and controlled by a PC program. These products work on hosts that support USB 1.1 or higher and allow up to 4 USB Tower Light connections per PC Supports Low speed (1.5Mbps) and Full speed (12Mbps) communication Provides MS Runtime libraries for developers(VC ++, VB, Delphi) to utilize in various PC applications. A sample program (VC ++) is available for testing purposes. The product uses device drivers in the PC for built-in HID (Human Interface Devices). Therefore, the operating system (OS) does not need a separate driver to control and to communicate with the LED Tower Light through the PC application Native support for 32bit OS, and supports 64bit in Windows XP, Win7. For other OS, please contact us * Image to the left shows the Tower Light Connections. 1. Basic USB Information USB is an abbreviation for Universal Serial Bus, a PC peripheral bus standard developed to satisfy the industries growing need in the mid 1990s for a new interconnection between computers and electronic devices. Developed by companies such as Intel, Microsoft, Compaq, IBM, NEC, Nortel, DEC etc. the USB can connect up to 127 devices without reboot or setup for new peripherals. Data transfer speed have been improving rapidly. * HID(Human Interface Devices)? USB can be applied to various devices and can be classified by its use case. Among them is the USB classification called the Human Interface Device (HID). These devices can be used to control the PC. A typical HID device includes a mouse, keyboard, joystick, etc. The data from the devices is sent to the host(PC) by a “interrupt” type IN-endpoint format. The process of connecting and detecting the device to the USB port is called “the initial determination”. After “the initial determination” is made, the host PC requests the device's specific role and the function is then specified by the Descriptor. At that moment the device and the PC periodically exchanges requests, and the descriptor. This process is called “Enumeration”. After the finishing the “enumeration” process the PC detects the device and registers it as a USB Device. When the registration is completed, the USB Device exchanges data and perform its designated function. The process how the USB Device is connected to the PC 1. When you connect a USB Device to the PC, Device is powered on. 2. Normally the D+, D- of the PC is on low signal with both D+ and D- having pull down resistors of 15KQ. 3. A full speed USB Device has a pull-up resistor of 1.5KQ hung on D+, Low speed devices on the other hand have a pull-up resistor of 1.5KQ on the D-. 4. Therefore, the PC usually has a low signal on the data line but when the USB device is connected the PC it detects the high signal of the data line and notifies the host of the USB device connection.

4. Block Diagram External USB Cable Internal Signal Line ^LED Lamp Driver Circuit —► LED LampJ Buzz Circuit M Buzz d») -► SMPS (Switching Mode Power Supply) Internal Power Line External USB Cable Internal Signal Line Internal Power Line 5. Specifications Electric Horn/ Speakers

Technical Data for USB Type LED Tower Light6. USB Cable 1. The power consumption of a USB Tower light(3 layers type) is only about 2.5W. 2. The USB specification is 5VDC/(300mA/500mA) per PC port which equals approximately 1.5W. Thus, using two ports will supply the proper power to the product. 3. It is possible to use multiple colors at the same time by using the USB power supply, but using one lamp and one alarm sound at a time is recommended. 4. There are two types of USB connections as shown in the image below; a standard USB connector and a USB power connector with a power line...

EH □ ST56EL-USB 056mm Pole Mount USB LED Tower Light Connected to PC USB port without power supply unit Model number Layer Certificate Technical Diagram ST56MEL-USB (Units : mm) Wiring Instructions • Connect both USB connector and USB power connector to PC O ST56MEL-USB 056mm Direct Mount USB LED Tower Light Model number Layer Certificate • Customized color arrangement available • 70mm lens height(Standard : 40mm) • Customized pole length available • Wall mount bracket available • Use more than 2 USB tower lights in one PC ** m Wall Mount Bracket Wall Mount Bracket TWS45 TWA45 Electric...