The microphone should be positioned to the side of the mouth, about 20 - 30 mm forward. This will keep it within the direct sound path but out of the breath stream, therefore minimising any ‘pop’ sounds. Of course every user will be different and a degree of experimentation will be necessary to achieve the preferred result. Professional users should note that it is recommended practise that headsets are issued on an individual user basis to preclude any possible health risks.

Maintenance

As with any equipment which will be used in close proximity to sensitive parts of the body, it is essential that the ear pads, the headband and the microphone pop-shield are kept clean. Use a damp cloth for cleaning the ear-pads and headband using only gentle cleansing agents (such as washing- up liquid). Take care not to allow any water drops into the transducer elements and do not use any solvent cleaners.

The microphone pop-shield of the headset can be easily removed and washed in warm water. Please take care that the pop-shield is completely dry when it is replaced.

The fully modular design of the DT 150 and DT 190 allows for full, in-field serviceability without the need for specialists tools. Every item of the assembly is available as a spare part and no special training is necessary for servicing. The Order Numbers of all of the spare parts are listed under “Spares“, “Supplied Accessories“ and “Optional Accessories“. Please take care to identify the parts required by the Order Number as there are many options, especially for the transducer parts and the cable assemblies.

Safety

When plugging in headphones or headsets to the drive amplifier, we recommend that this is done before it is fitted over the ears for use. This will give the technician the chance to check that the volume levels are not too high. Please remember that the user could well be a highly-paid presenter and the consequences of damaging his/her ears may well prove to be music to the ears of the lawyers!

The very low levels of distortion can make listening levels higher than is perceived and we have to warn you that listening to programme or talkback at high levels for long periods can permanently damage your hearing.

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NEC DT 150, DT 190 manual Maintenance, Safety
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DT 150, DT 190 specifications

The NEC DT 190 and DT 150 are part of NEC’s innovative range of digital terminals, designed to enhance communication within the business environment. These devices are engineered to deliver impressive performance, a user-centric design, and a suite of features that improve productivity and collaboration.

The NEC DT 190 is a versatile and highly functional desk phone designed for users demanding an advanced communication tool. With an ergonomic design, the DT 190 is equipped with a large, backlit LCD display that provides clear call information, allowing users to easily navigate calls and settings. Its intuitive interface enables quick access to essential functions and features such as call transfer, call hold, and conferencing.

The DT 190 supports a host of advanced telephony features, including VoIP (Voice over Internet Protocol), enhancing its capability in modern business environments. Users can benefit from features such as programmable keys that can be customized for one-touch access to frequently dialed numbers or essential functions, streamlining operation and enhancing efficiency. Additionally, the phone comes with a built-in speakerphone and adjustable ringtones, ensuring a flexible communication experience.

Turning to the NEC DT 150, this model is tailored for cost-conscious businesses that still require a reliable and functional communication solution. The DT 150 also boasts a clear LCD screen, albeit smaller than the DT 190, with essential features accessible for everyday use. It comes equipped with a robust set of basic functions including mute, redial, and call waiting.

Both models are designed with power-saving technology, ensuring energy efficiency while minimizing operational costs. They are compatible with a variety of NEC PBX systems, making integration into existing infrastructures straightforward and efficient.

In addition to their functional benefits, the NEC DT series emphasizes user comfort with adjustable stands that allow for optimal positioning. The build quality is robust, ensuring longevity in demanding office environments.

In conclusion, both the NEC DT 190 and DT 150 deliver exceptional value for businesses looking for reliable, feature-rich communication solutions. With their blend of advanced technology, user-friendly design, and flexibility, these telephones represent a strong choice for organizations seeking to enhance their telecommunication systems.
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