General
Plug connection	DB9 plug/socket
Assignment	1:1
Shielding	Foil shielded
Plug coating	potted
Connector locking	Knurled screws

The serial cable from BlackBox, type BC00230, is a universally applicable DB9 cable for connecting or extending serial devices. It connects DB9 male connectors with DB9 female receptacles and is designed with a length of 3.0 metres. The cable is designed for use in IT infrastructures, particularly for connecting modems, multiplexers, or AT-style mice. The connection is made via a 1:1 wired cable, ensuring standard serial communication. The connectors are potting-sealed and equipped with knurled screws, enabling a secure and mechanically stable connection. Shielding is provided by foil shielding, which reduces electromagnetic interference and enhances signal integrity during operation.

Serial cable are used for data transmission between devices via serial interfaces, which often occur in older or specialised systems. The DB9 connector is a widely used standard format employed in many industrial and IT environments. The cable is designed for use in environments where reliable, interference-free data transmission is required, for example in server rooms, when connecting terminal devices, or in industrial control systems.

Functions and equipment in detail

The cable features a DB9 male connector and a DB9 female receptacle, with both ends potting-sealed to ensure mechanical stability and improved protection against contamination and mechanical stress. The knurled screws on the connectors allow for secure fastening to the device’s receptacles, which is particularly advantageous when frequently connecting and disconnecting or in environments with vibrations. The foil shielding reduces electromagnetic interference that could impair signal quality. The wiring follows a 1:1 configuration, meaning each pin at one end is directly connected to the corresponding pin at the other end – this corresponds to the standard configuration for serial connections.

Technology explained simply

The foil shielding surrounds the cable’s interior and protects it from external electromagnetic interference. This is especially important in environments with many electrical devices, where interference could affect data transmission. The potting-sealed connectors increase mechanical strength and prevent disconnection due to vibrations or mechanical stress. The knurled screws enable a mechanical locking mechanism that secures the cable to the receptacle. The 1:1 wiring ensures data transmission occurs without rerouting or conversion, which is crucial for compatibility with standard serial devices.

Compatibility and accessories

The cable is designed for connecting DB9 serial devices such as modems, multiplexers, AT-style mice, or other devices communicating via a DB9 interface. It is available in a male/female configuration, making it suitable for most standard applications. Its universal use allows it to be employed both as an extension cable and for direct connection between two devices. It is not specifically designed for any particular device or system, but serves as a general-purpose connection component.

Installation and mounting

Installation is performed by simply inserting the connectors into the corresponding receptacles on the devices. The knurled screws on the connectors allow for mechanical locking, securing the cable to the receptacle. The potting-sealed connectors enhance stability and prevent accidental disconnection. No special tools or additional mounting are required. The connection is immediately operational once the connectors are inserted and locked into the receptacles.

Advantages in operation

The cable provides reliable and interference-free data transmission thanks to the foil shielding. The potting-sealed connectors and knurled screws ensure a mechanically stable connection that remains secure even under load. The 1:1 wiring guarantees compatibility with standard serial devices. The length of 3.0 metres allows for flexible device placement without requiring additional extensions. The cable is suitable for use in IT and industrial environments where a stable serial connection is required.