Operational connectivity: Interfaces, standards and connector technology for modern forces

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The concept "Soldier as a System" fundamentally changes the understanding of the individual soldier: instead of being a carrier of isolated equipment, the soldier becomes a digitally networked system node within the tactical information network. Modern battlefield architectures require a complete integration of sensors, communication, power supply and weapons technology. This puts data and power connections, along with their robustness and interoperability, at the center of system design.

The central technical characteristics are:

• Modular energy supply: Central power source with distribution to helmet, computers, radios; military PNT or C-UAS systems.
• Standardized data and power interfaces: Use of standardized connectors and data protocols for compatibility between different manufacturers.
• Digital integration: Connection to tactical networks (battle management systems) and shared data platforms with integration of intelligence gained into HUDs and AR systems.

Equipment of a modern field soldier - system overview

The personal equipment of the modern soldier is a highly integrated system of sensors, communication, energy supply and weapons technology. Each subsystem fulfills a specific function and is integrated into the overall network via data and power connections. Wired connectivity plays a central role despite the increasing number of wireless solutions - it ensures reliability, protection against eavesdropping and energy efficiency during insertion.

The following overview shows the most important components of a networked soldier system:

Connectivity requirements in the field

In the field, the power and data connections are permanently exposed to vibration, shock, moisture, dust and electromagnetic influences. Unlike in civil applications, connectors and cables must function reliably during operations, even under mechanical load, soiling or moisture. At the same time, the increasing digitalization of equipment is creating the need for high-bandwidth, interference-free connections that can transmit energy and data at the same time.

Standardization as a key factor

In order to make this increasing technical complexity manageable, the armed forces and industry are relying on standardized interfaces. They not only ensure compatibility between devices from different manufacturers, but also simplify logistics and maintenance in the field.

A central component of this development is the NATO standard STANAG 4695, which defines the mechanical and electrical features of power supply connections for soldier systems. It defines voltage levels, pin assignments and housing geometries and thus creates the prerequisite for batteries, radio devices, computers and power distribution units of different origins to be combined with each other without adjustment.

Advantages of STANAG-compatible interfaces

• Interoperability: Devices from different NATO nations and manufacturers can be directly interconnected - crucial for multinational operations.
• Logistical simplification: Standardized cables and spare parts reduce system weight and maintenance costs.
• Future security: New generations of devices remain backwards compatible as long as the defined interface is complied with.
• Operational safety: Power and data connections are exchanged using standardized locking and coding, which prevents mismating or damage.

In addition to STANAG 4695, other standards or recommendations such as STANREC 4845 or STANREC 4851 are becoming increasingly important. They define standardized data and energy paths within the soldier system architecture and form the basis for modular, scalable equipment.

On the industrial side, modern connector systems - such as those from the ODU AMC® NP series - are closely aligned with these standards. They combine compact styles with hybrid data/power inserts, high mating cycle resistance and 360° shielding. The improved power contacts support high-performance systems, making the AMC NP particularly suitable for battery packs, power distribution units (PDUs), conformal wearable batteries (CWBs) and C4ISR peripherals for transmitting USB 2.0 signals and power.

Compatible with STANAG 4695, GOSSRA (Generic Open Soldier System Reference Architecture) and the Nett Warrior Standard, the ODU AMC® NP supports the military requirement for modular, interoperable and reliable connectivity without the need for separate connector systems for each device.

Comparison of standard & maximum performance options

While STANAG 4695-compliant connectors establish a foundation for interoperable power supply between different devices and nations, new miniaturized connector systems such as the ODU AMC® High-Density series show how weight, size and performance can be further optimized without compromising on robustness and safety. Their strength is particularly evident within closed systems.

Highly exposed equipment such as helmet systems or portable optics benefits from the small high-density connections. Reduced surface area means a lower risk of failure due to damage and can be decisive for the success of missions in adverse terrain. The smaller form factor also facilitates seamless integration into vests and plate carriers and creates better space conditions on the equipment, leaving more room for additional components. In addition, the freedom of movement of the operators is optimized by more compact connections and a lower overall weight. Extensive testing of the connector solution in accordance with MIL-STD-810 ensures a field-ready result.

The advantages of the specialized interfaces at a glance:

• More freedom of movement due to reduced weight and compact connectors
• IP68 rating with 20 m diving depth at 120 minutes, enabling flexible mission design
• Optional screw locking to ensure secure connections even in adverse environmental conditions

The following list offers a comparison of the technical possibilities within the frame of common and specialized connection solutions.system:

Outlook - Future of soldier systems

With the increasing spread of multi-dimensional support systems that make use of high-frequency and broadband data transmission, hybrid connector technologies are gaining strategic importance. More intelligent, bidirectional systems enable the further development of the "Soldier as a System" and use the complex system architecture of modern task forces to integrate collected data from the field into comprehensive networks in real time. As a result, networked armed forces act as a unified bundle of forces that unleashes its full power in multi-domain warfare.

The future of soldier systems clearly lies in consistent networking, miniaturization and partial standardization. Connectivity is no longer just a means to an end, but a strategic enabler of interoperability, usability and system growth. Those who master the interface will shape the architecture of tomorrow's battlefield.

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https://www.odu-connectors.com