General
Cable type	Serial
Plug connection	DB9
Assignment	1:1
Shielding	Foil shielded
Connector	potted
Mounting	Knurled screws

This serial cable from BlackBox is designed for connecting or extending devices with a DB9 interface. It features a plug/socket configuration and has a length of 7.6 meters. The connection is made via a 1:1 pin assignment, meaning each pin at one end is directly connected to the corresponding pin at the other end. This configuration is typical for direct device connections where no signal conversion or rerouting is required. The connectors are potting-sealed and equipped with knurled screws, enabling a secure and mechanically stable connection to the mating sockets. Shielding is provided by foil shielding, which reduces electromagnetic interference and enhances signal integrity during data transmission.

The cable is designed for use in serial communication applications where data is transmitted bit by bit over a single wire pair. This is particularly common with older or specialized devices that communicate via an RS-232 interface. The DB9 connector is an industry standard and is frequently used in IT infrastructure, automation technology, and communication technology. DB9 cables are commonly used for connecting modems, multiplexers, or extending AT-style mice.

The DB9 connector is a 9-pin serial interface typically used for RS-232 communication. The pin assignment here is 1:1, meaning signals are transmitted directly without rerouting or conversion. The connectors are potting-sealed, providing high mechanical stability and protection against mechanical stress. The knurled screws allow for secure fastening to the mating sockets, especially in environments with vibrations or movement.

Foil shielded

The foil shielding serves to protect against electromagnetic interference (EMI). It reduces the impact of external interference sources on transmitted signals and prevents the cable from acting as a source of interference itself. This is particularly important for data transmission over longer distances, such as the 7.6 meters here, where sensitivity to interference increases. The shielding ensures reliable and error-free data transmission.

The cable is suitable for both direct connection between two DB9 devices and for extending existing connections. It is universally applicable, as it is available in all possible gender combinations, ensuring the correct configuration is always available for any given application. Typical use cases include connecting modems, multiplexers, or extending serial peripherals such as AT-style mice.

The cable is suitable for applications in IT infrastructure, industrial automation, and communication technology. It is commonly used in environments where a stable and reliable serial connection is required, such as in server rooms, network equipment maintenance, or integrating legacy systems into modern infrastructures. The 7.6-meter length provides sufficient flexibility for most application scenarios without requiring additional extensions.

The cable is compatible with all devices featuring a DB9 interface operating with the RS-232 protocol. It can be combined with other DB9 cables, adapters, or extensions, provided the pin assignment and electrical requirements match. The use of potting-sealed connectors with knurled screws increases connection reliability, especially in environments with mechanical stress.

Installation is done by simply plugging the connectors into the corresponding sockets on the devices. The knurled screws enable a mechanically secure fastening, preventing accidental disconnection or loose connections. The foil shielding does not need to be actively connected, as it functions as an integrated shield. The connection is immediately operational once the connectors are properly inserted.

The combination of 1:1 pin assignment, foil shielding, and potting-sealed connectors with knurled screws ensures high reliability and signal quality. The 7.6-meter length provides flexibility in device placement without compromising signal quality. The universal availability in various gender combinations simplifies selection for different applications.