MM6854/64 Dual Band GSM Data Modem

7 INSTALLATION

7.1 Introduction

This is an area, which is often overlooked and is, in fact, very important.

Cost and corner cutting are frequently observed in installations and, consequently, reliability suffers and problems are seen.

We can only offer a few suggestions in this document, however, expert help is available from a number of experienced installation companies. Knowledge of the vehicle in which the equipment is being installed is invaluable.

7.2 Antennas

The majority of GSM antennas do not require an additional ground plane. However, it is important that any antennas are installed in the best possible location and, if necessary, provided with a suitable ground plane.

The CA8401 antenna, which Maxon sell as an accessory, is designed for mounting inside of the vehicle. This avoids any problems with car washes or vandalism. Mounting instructions are provided with the aerial.

Ideally, multiple antennas should be separated by a minimum of a wavelength (at the lowest frequency), whilst still retaining a good ground plane for each antenna. For instance, for a 400MHz antenna, the ideal separation should be a minimum of 0.75m from any other antenna.

With the use of composite materials, especially on trucks, materials may have to be used to fabricate a suitable ground plane, if required.

Note: It is important that the antenna ground is not connected to the modem ground. This will not happen where through-glass antennas are used. Antennas, which are through-chassis mounting and connect to the vehicle chassis should not be used. Failure to observe this may result in damage to the unit and will invalidate the warranty.

7.3 Power Sources

It is important that a “clean” source of power is used for the supply to the modem. Ideally, this is achieved by taking the supply directly from the battery terminals. With modern vehicles, getting access to the battery is very difficult and therefore alternative sources have to be found. The next best source is the main fuseboard and then around the steering column.

Frequently, either a large voltage glitch, or total loss of voltage may be observed on some trucks at start-up. The loss of voltage to the GSM data modem is avoided by the use of an internal battery.

It is recommended that star earthing is used for all connections to the –ve terminal of equipment. This avoids the possibility of earth loops.

The power supply should be in the range of +9V to +28VDC.

Maxon can supply, as an accessory, a mains power supply which is capable of powering MM-6854 modems. This power supply has the part number CA6823 and is a 12V, 1A power supply.

7.4 Fusing

It is strongly suggested that fuses for the data modem, and any associated equipment, are located in a place away from the main fusebox. This is to avoid the possibility of the fuses being “borrowed” by the driver for other uses.

A 500mA anti-surge fuse should be used for +12V powering or a 800mA anti-surge fuse used for +24V powering.

Issue 1.0

ME 820047

03/00

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Maxon Telecom MM-6854, MM-6864 manual Installation, Antennas, Power Sources, Fusing
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MM-6854, MM-6864 specifications

Maxon Telecom is renowned for its innovative communication solutions, and two of its standout products are the MM-6864 and MM-6854 models. Both devices are designed to cater to the needs of modern enterprises, offering robust features and cutting-edge technology to enhance communication effectiveness.

The Maxon Telecom MM-6864 is a feature-rich communication device that emphasizes versatility and connectivity. One of its main features is its ability to support multiple communication protocols, making it compatible with a wide range of network systems. This flexibility is essential for businesses that require seamless integration with existing infrastructures. The MM-6864 also boasts advanced encryption technology, ensuring secure communications to protect sensitive information.

Another characteristic that sets the MM-6864 apart is its expansive coverage capabilities. The device utilizes the latest in antenna technology, which not only extends its range but also improves signal strength in challenging environments. This makes it an ideal choice for enterprises operating in remote locations or large facilities where maintaining a reliable connection is paramount.

On the other hand, the Maxon Telecom MM-6854 is tailored more towards compactness and user-friendliness without compromising on features. One of its significant characteristics is its lightweight design, making it easy to carry and suitable for on-the-go professionals. The MM-6854 also offers impressive battery life, allowing users to stay connected throughout their busy day without the constant need for recharging.

Both devices incorporate advanced digital signal processing (DSP) technology, ensuring clear audio quality during communications. This is crucial in fast-paced business environments where understanding every detail is vital. Additionally, they come equipped with customizable user interfaces, enabling users to tailor settings according to their specific needs, whether they are on a conference call or conducting day-to-day operations.

In conclusion, the Maxon Telecom MM-6864 and MM-6854 models stand out in the telecommunications landscape due to their combination of advanced features, reliable connectivity, and user-centric designs. Whether a business requires the extensive capabilities of the MM-6864 or the portability of the MM-6854, Maxon Telecom delivers devices that meet diverse communication needs while ensuring security and efficiency.
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