The DIGITUS CABL connection cable, type AK-610100-018-E, is a serial null modem cable (also called zero-modem cable) for direct data exchange between two serial devices. It features two D-Sub 9-pin female connectors at both ends and is 1.8 m long. The transmit and receive pins are internally crossed, enabling the devices to communicate directly without requiring a modem or additional network device. This cable is typically used to connect two PCs, a PC with a SAT receiver, or other older devices with DB9 serial ports. The connection allows, for example, transferring firmware updates to a SAT receiver to bring its functionality up to date.

Applications

The cable is designed for use in IT and telecommunications systems, particularly in environments where older serial devices are still in operation. It is suitable for direct data exchange in small networks, for maintenance or configuration of devices equipped with an RS-232 serial port. Its use is common in home and small business IT environments, where devices such as SAT receivers, industrial controls, or older terminals with serial interfaces need to be connected.

Functions and Features in Detail

The cable is configured as a null modem cable, meaning the data lines (transmit and receive) are crossed internally within the cable. This allows a device transmitting data to be directly connected to a device receiving data—without additional hardware. The two connectors are each D-Sub 9-pin female connectors, representing a standard interface for serial communication. The cable length of 1.8 m provides sufficient reach for connecting devices that are not placed directly next to each other, without making the connection overly long or cumbersome.

Technology Explained Simply

The technology is based on the RS-232 standard, used for serial communication between devices. The D-Sub 9-pin female connector is a common interface found in many older computers, peripheral devices, and industrial equipment. The null modem principle enables direct connection between two devices, both configured as transmitter" or "receiver, by redirecting signals within the cable. This eliminates the need for a modem or additional network adapter. The cable length of 1.8 m is suitable for typical working environments without degrading signal quality.

Compatibility and Accessories

The cable is compatible with all devices featuring a D-Sub 9-pin serial port and supporting null modem connections. These include, for example, PCs with serial interfaces, SAT receivers, industrial control devices, or older terminals. No special accessories are required, as the connection is made solely via the serial interface. The connection is made directly through the female connectors, without requiring additional adapters or converters.

Installation and Mounting

Installation is done by simply plugging the two D-Sub 9-pin female connectors into the corresponding serial ports of the devices. No tools or additional configurations are required. The connection becomes active immediately once the connectors are plugged in, provided the devices are powered on and the serial interface is correctly configured. The cable length of 1.8 m allows for flexible positioning of the devices relative to each other.

Operational Advantages

The cable provides a reliable and stable serial connection without additional hardware. The null modem function enables direct data exchange, simplifying device configuration and maintenance. Its use is straightforward and does not require special expertise. The cable length of 1.8 m offers sufficient flexibility for use in various environments. The cable is beige in colour, making it inconspicuous in typical working environments.

The cable is classified in ear category 6 (ElektroG), covering small IT and telecommunications devices that can also be used in private households. The cable shape is round, allowing for flexible handling and installation. The delivery includes a single cable, without additional components or documentation.