Test pilot tone u 200 V 1 a voltage free switch and LED

 indication pilot tone on 100 V speaker line. It can monitor multiple areas on a single input contact. U is installed on the built-in base of selected Bosch speakers. The terminal board is a specially designed printed circuit board for inspection Measure the 20 kHz pilot tone generated by the monitored public address or voice alarm system. If there is a 20 kHz signal (pilot tone) higher than 5 V, the voltage free switch is activated and the LED indicator lights up to provide intuitive confirmation of operation. The basic function terminal board is used to monitor whether there is pilot sound on the speaker line. The line terminal board is installed at the end of the loudspeaker line and can detect 20 kHz pilot tone signal. Pilot tone signals are always present on the line when background music (BGM) is playing, a call is in progress, and there is no signal. The 20 kHz pilot tone level is very low (- 20dB) and cannot be heard by the user. When there is a pilot tone signal, the LED indicator lights up and the contacts on the terminal board close. If the pilot tone fails, the contact opens and the LED goes out. Installation at the end of the speaker line helps to maintain the integrity of the entire line. The presence or absence of pilot tone signals is independent of the number of speakers on the line, line load, or line capacitance. Contacts can be connected to PA systems such as Bosch voice alarm systems to detect and report faults on speaker lines. Multiple line termination boards can be daisy chained to a single fault input contact. In this way, speaker lines with multiple branches can be monitored. Since the background music also contains a 20 kHz pilot tone signal, there is no need to interrupt the background music. Certificate and approved immunity in accordance with en 50130-4, emergency compliance with en 54 ￣ 16 * / en 60849 * standard * for use with voice alarm system and installation according to installation and user instructions regional certification European CE declaration of conformity cpd cpd cpd installation / configuration JP1 JP1 configuration for trigger output configuration

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