USB Type-A to 2-Port RS232 DB9 Male Serial Converter Cable

Description

Introduction:

USB Type-A to 2-Port RS232 DB9 Male Serial Converter Cable is designed for connecting RS232 serial devices, such as sensors, actuators, PLCs, printers, digital cameras, and serial modems, to USB port on a PC or laptop, achieving the connection and communication between different devices. It is also furnished with two LED indicators, offering real-time connection status to users, and ensuring smooth communication and reliable data transmission. Premier Cable P/N: PCM-KW-197

Specification:

Features:

1. Dual RS232 Ports: Equipped with two DB9 male connectors, allowing simultaneous connection to two RS232 serial devices for efficient multitasking.
2. Signal Conversion: It can convert USB signals to RS232 serial signals, enabling communication between modern computers and legacy serial devices.
3. Hot-Swappable: It supports hot-swapping, allowing you to connect and disconnect devices without opening the computer, enhancing convenience and flexibility.
4. Integrated Chipset: It features an advanced IC Chipset, ensuring stable communication between USB and RS232 devices, and reducing data loss or signal degradation.
5. USB Port Powered: Powered directly through the USB type-A port, eliminating the need for external power supplies.

What is RS232?

RS232 is a standard protocol used for serial data communication, commonly used for connecting computers to external devices such as modems, printers, and industrial equipment. It defines electrical characteristics, signal functions, and connector pin configurations. It typically uses a DB9 (9-pin) or DB25 (25-pin) connector for communication with DB9 being more common. Here is the function of each pin in a DB9 connector:

1. Communication Distance: RS232 typically supports a communication distance of up to 15 meters (about 50 feet), depending on the baud rate and cable quality.
2. Voltage Levels: RS232 uses negative voltage to represent logic "1" (typically -3V to -15V) and positive voltage to represent logic "0" (typically +3V to +15V).
3. Point-to-Point Communication: It does not support multi-point communication and only supports point-to-point communication between two devices.
4. Wiring Method: RS-232 uses single-ended signal transmission. In some simple applications, RS-232 connector can use only three pins, Pin 2, Pin 3, and Pin 5, achieving basic data transmission. However, for more advanced communication requirements, additional pins of the RS-232 connector may be necessary to support extra functionalities, such as flow control or data-ready status.

Drawing: