Eigenschaften
Weightings in scales	A / C
Dimensions / weight	262 x 75 x 39 mm / 390 g

This item is a 5 m long extension cable for the microphone of the integrating sound level meter CA 1310 by Chauvin Arnoux. It serves as an accessory to extend the reach of the microphone, enabling measurements to be taken at hard-to-reach or distant locations without having to move the device itself. The cable is specifically designed for use with the CA 1310 and ensures stable signal transmission between the detachable microphone and the measuring device.

Applications

The extension cable is used in environments where the sound level meter CA 1310 is employed to measure noise levels. This includes, for example, workplaces where noise limit values must be monitored, or technical installations such as ventilation and air conditioning systems, where noise emissions need to be documented. It is also useful in buildings for acoustic testing or assessing noise disturbances caused by neighbouring sound sources. The extension allows the microphone to be placed at locations spatially separated from the device without compromising measurement accuracy.

Functions and Equipment in Detail

The cable is designed for use with the CA 1310, an integrating sound level meter of Class 2 according to IEC 61672-1. It enables connection of the detachable microphone over a length of 5 metres. The extension is designed to not impair the signal quality or measurement accuracy of the device. Connection is made via the standardised interface concept of the CA 1310, so no additional adapters or converters are required.

Technology Explained Simply

The extension cable transmits the electrical signal from the microphone – which converts sound waves into electrical voltage – directly to the measuring device. The 5-metre length provides sufficient flexibility to position the microphone at various locations, for example at a height corresponding to the human ear, or closest to the noise source. Signal transmission occurs without additional amplification, as the microphone itself operates with sufficient signal strength. The extension is intended for indoor use, as no specific protection rating (e.g. IP) is specified for the cable itself.

Compatibility and Accessories

The extension cable is exclusively intended for the sound level meter CA 1310 by Chauvin Arnoux. It is not a universal cable, but specifically adapted to the interfaces and electrical requirements of the CA 1310. As an accessory, it is offered alongside other components such as the windscreen, USB power adapter, or quick charge set, all of which are also designed for the CA 1310. Use with other devices is not intended and may result in malfunction.

Installation and Mounting

Installation is done by simply connecting the cable to the microphone and to the measuring device. The microphone is attached to one end of the cable, while the other end is plugged into the corresponding connector on the CA 1310. The connection is mechanically stable and enables secure signal transmission. No special tools or adjustments are required. The extension can also be combined with a tripod or other mounting system if needed, to fix the microphone in the desired position.

Operational Advantages

The extension enables flexible positioning of the microphone, which is particularly beneficial for measurements in large rooms or at hard-to-reach locations. This allows the measuring device to be placed on the floor or on a table, while the microphone is positioned at the desired location. This reduces physical strain on the operator and increases measurement efficiency. Additionally, measurement accuracy is maintained, as the cable does not cause any additional distortions or signal losses. The extension is thus a useful tool for technical inspections and environmental measurements where microphone positioning is critical.

Protection Rating and Operating Conditions

The operating conditions for the CA 1310 device are between 0 °C and 40 °C, under which the cable functions reliably. The extension is therefore suitable for use in controlled environments, such as workshops, offices, or laboratories.

Software and Data Processing

The CA 1310 device supports the SL software, which transfers data via a Micro-USB interface. The software enables graphical display of measurement values, tabular output, data export, and real-time mode. The extension cable does not affect these functions, as it only transmits the signal between microphone and device. Data processing occurs independently of the extension cable length.

Display and Measurement Functions

The CA 1310 features a large illuminated display with digital readout of sound level, a bar graph, and timestamp. Measurement functions include SPL (sound pressure level), Leq (equivalent continuous sound level), MaxL (maximum level), and MinL (minimum level). The integration time for Leq can be set between 10 seconds and 24 hours. The cable supports these functions, as it only transmits the signal and performs no processing.

Weight and Dimensions

The cable has a length of 5 metres and is designed for connection to the CA 1310 device. The CA 1310 device itself has dimensions of 262 x 75 x 39 mm and weighs 390 g (with batteries).

Conformity and Warranty

The CA 1310 device complies with the standard IEC 61672-1 Class 2. The warranty period is 2 years. The extension cable is designed as an accessory for this device and is supplied under the same warranty, provided it is used within its intended application. It is not an independent measuring device, but an add-on component to extend the functionality of the CA 1310.

Accessories and Alternatives

In addition to the extension cable, other accessories for the CA 1310 are available, including a windscreen, USB power adapter, and quick charge set (charger with 4 NiMH AA batteries). These components enhance the functionality of the device, with the extension cable specifically designed for spatial separation of microphone and device. The combination of these accessories enables flexible and efficient use of the CA 1310 in various application scenarios.

Practical Use

In practice, the extension cable is used, for example, when testing ventilation systems, where the microphone is placed near the fan or exhaust opening, while the device is positioned on the floor or on a table. It can also be used for measuring noise in offices or workshops, placing the microphone at the location with the highest noise exposure. The extension thus enables precise and efficient measurement without additional aids.

Note: Batteries are not included in the delivery scope.