Кабели VGA Двухцветное литье под давлением

1. Purpose and Use Cases

• Подключение компьютера к монитору: VGA cables are commonly used to connect desktop computers and laptops to external monitors.
• Подключение проектора: Frequently used in classrooms, conference rooms, and other settings to connect computers to projectors.
• Совместимость с устаревшими устройствами: Ideal for connecting older computers and display devices that do not have modern digital interfaces like HDMI or DisplayPort.

2. Технические характеристики

Тип разъема

• DB15 Connector: VGA cables feature a 15-pin D-subminiature connector, often referred to as a DB15 or HD15 connector. This connector has three rows of five pins each.
• Male and Female Connectors: VGA cables typically have male connectors on both ends, while devices such as monitors and projectors have female VGA ports.

Тип сигнала

• Analog Signal: VGA cables transmit analog video signals. This means the video data is represented by continuous voltage levels, which can be susceptible to signal degradation over long distances.
• RGBHV Transmission: VGA cables carry separate signals for red, green, and blue video components, as well as horizontal and vertical sync signals (RGBHV).

Поддержка разрешений

• Standard Resolutions: VGA cables support a range of resolutions, from 640×480 (VGA) to 1920×1080 (Full HD) and higher, depending on the quality of the cable and the devices involved.
• Refresh Rates: VGA cables can support various refresh rates, typically up to 60 Hz for higher resolutions.

3. Cable Quality and Length

Качество кабеля

• Экранирование: High-quality VGA cables have better shielding to protect against electromagnetic interference (EMI) and radio frequency interference (RFI), which can cause signal degradation.
• Gold-Plated Connectors: Some VGA cables feature gold-plated connectors to enhance signal transmission and reduce corrosion over time.

Длина кабеля

• Standard Lengths: VGA cables are available in various lengths, ranging from 1 meter (3 feet) to 30 meters (100 feet) or more.
• Деградация сигнала: Over longer distances, VGA signals can degrade, resulting in reduced image quality. Using high-quality cables and signal boosters can help mitigate this issue.

4. Installation and Setup

Подключение устройств

1. Выравнивание разъемов: Ensure the 15-pin connectors are properly aligned with the VGA ports on both the computer and the display device.
2. Безопасное соединение: Tighten the screws on the VGA connectors to secure the connection and prevent accidental disconnection.

Configuring Display Settings

1. Display Mode: Use your computer’s display settings to configure the display mode (extended, mirrored, or single display).
2. Разрешение и частота обновления: Adjust the resolution and refresh rate settings to match the capabilities of your monitor or projector for optimal image quality.

5. Advantages and Limitations

Преимущества

• Широко распространенная совместимость: VGA cables are compatible with a wide range of devices, making them a versatile choice for many applications.
• Простота: Easy to use and widely available, making them a convenient option for connecting display devices.