Description of Locally Powered Connection

Using a Locally Powered Connection, an intercom station is connected to the intercom line just like any phantom powered intercom station, except a local power supply is also connected. The external local power supply is located near the intercom station and provides power for that station only.

Since power loss on the intercom lines is no longer an issue, the operating range is now limited only to the audio transmission range, which is several miles. Another advantage to this method is more stations can be connected to the intercom channels. When local power is supplied to an intercom station, the station detects it and automatically disconnects from the system’s phantom-power supply.

Figure illustrates an intercom system with both phantom-powered and locally powered U boxes. As long as a system power supply (PS2001L, SPS-2001, etc.) is located somewhere in the intercom system, the proper terminating impedance is still be supplied for all stations. However, if all stations are locally powered, and there is not system power supply, a special line termination must be installed.

FIGURE 5. A 2-channel Audiocom intercom system using a PS2001L power supply.

A 2-channel Audiocom intercom system using a PS2001L power supply (as shown in Figure 5). The PS2001L is set to isolate mode. In isolate mode, each intercom channel is a separate party line, and total current for each channel is limited to 1 Amp. Both the SS-1002 and SS-2002 stations may be connected depending on each location’s need to communicate with one or two channels. SS-1002 stations may be connected to either channel one or two. Also, note locally powered stations may be connected. This is recommended when stations are installed at remote locations. Since the PS2001L provides termination for the intercom channels, no user-installed termination is required.

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Telex SS-1002 technical manual Description of Locally Powered Connection
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SS-1002 specifications

The Telex SS-1002 is a highly regarded wireless intercom system designed primarily for broadcast, film, and live production environments. Known for its reliable performance and user-friendly features, the SS-1002 has become a staple in professional communication setups.

One of the standout features of the Telex SS-1002 is its advanced wireless technology. The system operates in the 2.4 GHz ISM frequency band, which provides robust transmission capabilities while minimizing interference from other wireless devices. The range of the SS-1002 can extend up to 300 feet, allowing users to communicate seamlessly across large production areas.

The SS-1002 is also characterized by its high-quality audio clarity. Utilizing digital transmission techniques, it delivers clear, distortion-free communication, which is crucial for effective coordination during live events. The unit is equipped with a full-duplex communication system, allowing for simultaneous speaking and listening, which enhances the collaborative workflow among team members.

Another notable aspect of the Telex SS-1002 is its ease of use. The system features intuitive controls and a straightforward interface, making it accessible for both technical and non-technical users. Users can quickly adjust volume levels, switch channels, and monitor battery life through the device’s LED indicators.

Power efficiency is yet another characteristic of the SS-1002. It runs on rechargeable lithium-ion batteries, providing up to 10 hours of continuous use on a single charge. This long battery life reduces downtime and ensures that production crews can maintain constant communication throughout demanding schedules.

Moreover, the Telex SS-1002 supports multiple belt packs, enabling a scalable communication network tailored to the needs of the production team. Each belt pack can be configured to operate on different channels, facilitating private communication among specific groups without causing interference with others.

In conclusion, the Telex SS-1002 stands out in the realm of wireless intercom systems due to its advanced technology, high audio fidelity, user-friendly design, and efficient power management. Its versatility and reliability make it an essential tool for professionals in the broadcasting and live production industries, where effective communication is key to success.
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