TECPRO AD903 2 to 4 wire adapter

The AD903 2 to 4 wire adapter allows connection of almost any audio source to a Tecpro ring intercom 2 wire system. For example, most broadcast video cameras have in-built 4 wire comms systems which are cabled within the main video cable. Use of an AD903 at the camera control unit will allow that camera to appear as a part of the Tecpro communication system, while minimising extra wiring and expense. The AD903 will work with most separate send and receive communications systems in the same way. Levels are totally independently adjustable on input or output. Other applications include injection of microphone or line level external inputs onto the comms system, and the provision for external equipment such as recorders, radio links, audio consoles or paging systems to listen to the comms system. Input and output on 4-wire side are transformer balanced, isolated and floating – reduces likelihood of hum and interference Very wide input and output ranges – will interface to mic or line level systems Sidetone null adjustment to minimise input to output crosstalk All presets are multiturn types for easy adjustment Industry standard XLR type connectors