User manual SENNHEISER AC 2

[. . . ] Multi-channel systems suitable for any application where talk-back signals are to be transmitted (e. g. Instructions for use Note: The NT 3 mains unit must be ordered separately. 12 Safety instructions Caution!If units are opened by you in breach of this instruction, the warranty becomes null and void. Attention!Keep the unit away from central heating radiators and electric heaters! Caution! [. . . ] Use a remote antenna (optional accessory) when the combiner position is not the best antenna position for optimum transmission. ¶ 16 Connecting the mains unit »¿ The combiner is powered via the NT 3 mains unit. The red LED lights up, indicating the the unit is ready for operation. Insert the DC connector on the power supply cable into the DC input ». Note: As soon as the combiner is switched on, the built-in fan starts producing a clearly audible operating sound and ensures proper cooling of the unit. Make sure that the air vents of the unit are not covered or blocked. If problems occur . . . The combiner does not transmit a signal Check the connections of the NT 3 mains unit. Disturbed RF transmission Make sure that the antenna is connected correctly. Use low-loss RF cables which are as short as possible. If problems occur that are not listed above or if the problems cannot be solved with the proposed solutions, please contact your local Sennheiser agent for assistance. 17 Specifications Active transmitter combiner 4:1 Frequency range Distribution attenuation RF input power Impedance Power supply Current consumption 500 to 870 MHz 0 dB (±1 dB) max. 1. 5 A +1 A for powering the transmitters Accessories NT 3 Mains unit for AC 2 and four transmitters (e. g. SR 300 IEM G2), output voltage: 12 V DC, output current: 2. 5 A, European version Mains unit for AC 2 and four transmitters (e. g. SR 300 IEM G2), 120 V version Mains unit for AC 2 and four transmitters (e. g. SR 300 IEM G2), UK version BNC-BNC coaxial cable, length 1 m BNC-BNC coaxial cable, length 5 m Passive UHF antenna 19" rack adapter Antenna mount for mounting antennas to the front of the GA 2 UHF directional antenna NT 3-120 NT 3-UK GZL 1019-A1 GZL 1019-A5 A 1031-U GA 2 AM 2 A 2003-UHF 18 ENGLISH The guarantee period for this Sennheiser product is 24 months from the date of purchase. Excluded are accessory items, rechargeable or disposable batteries that are delivered with the product; due to their characteristics these products have a shorter service life that is principally dependent on the individual frequency of use. For this reason, we recommend that the sales receipt be retained as proof of purchase. Without this proof (which is checked by the responsible Sennheiser service partner) you will not be reimbursed for any repairs that are carried out. Depending on our choice, guarantee service comprises, free of charge, the removal of material and manufacturing defects through repair or replacement of either individual parts or the entire device. operating faults, mechanical damages, incorrect operating voltage), wear and tear, force majeure and defects which were known at the time of purchase are excluded from guarantee claims. The guarantee is void if the product is manipulated by nonauthorised persons or repair stations. In the case of a claim under the terms of this guarantee, send the device, including acces-sories and sales receipt, to the responsible service partner. [. . . ] Important: Before putting the device into operation, please observe the respective country-specific regulations!Important: Avant d'utiliser l'appareil, veuillez observer les dispositions légales en vigueur dans votre pays. Nota: Prima della messa in funzione seguite le prescrizioni vigenti nel paese nel quale viene utilizzato!Observación: !Anterior a la puesta en funcionamiento deberán observarse las correspondientes ordenanzas nacionales! [. . . ]