User manual SENNHEISER AC 3000

[. . . ] 8 Manufacturer declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Brief description With the AC 3000 8-to-1 active transmitter combiner, the signals of up to eight SR 3054 transmitters or up to four SR 3056 twin transmitters can be combined onto a single antenna (A 2003 UHF directional antenna or A 1031 U omni-directional antenna). The active transmitter combiner allows you to make highquality transmission systems with up to 8 channels. Areas of application: Multi-channel in-ear monitoring system for broadcast or stage use Multi-channel system suitable for any application where talk-back signals are to be transmitted (e. g. [. . . ] Do not use any solvents or cleansing agents!The AC 3000 contains mechanically moving parts (fans). Since dust and pollution can impair their function, you should regularly check the fans for proper operation and clean out any dust if necessary. The failure of one or several fans can cause overheating and permanent damage to the unit. 3 Delivery includes 1 active transmitter combiner 8:1 1 mains cable 1 rack-mounting kit 4 set of self-adhesive plastic feet 1 instruction manual You additionally require BNC cables for connecting the transmitters and the antenna to the AC 3000, an antenna (A 2003 UHF passive directional antenna or A 1031 U passive omni-directional antenna) and up to eight SR 3054 transmitters or up to four SR 3056 twin transmitters. Unused inputs do not require a terminating resistor. Operating elements ³ 8 ³ POWER LED · POWER (ON/OFF) switch » 8 RF inputs RF IN 1 to RF IN 8 for connecting the transmitters ¿ 3 low-noise fans ´ BNC socket for antenna output ANT ² IEC mains socket ¶ 8 LEDs for RF signal indication 4 Connection diagram The below connection diagram shows the connections for an 8-channel system. ANT 8:1 Putting the unit into operation Setting up the unit Set up the AC 3000 on an even, horizontal surface so that it cannot fall over or mount it into a 19" rack. During operation, the AC 3000 and the connected transmitters produce considerable waste heat!Make sure that the air vents of the units are not covered or blocked and provide for a duct of sufficient size to ensure a free air flow between the units ­ especially when mounting several transmitter combiners or transmitters into a desk, chassis or rack!Never stack more than two units directly one above the other! 5 Connecting the antenna The AC 3000 active transmitter combiner can be used with either the A 2003 UHF directional antenna or the A 1031 U omni-directional antenna. The antenna transmits the signals of all connected transmitters. The signals are combined onto the antenna output with no distribution attenuation. Connect the antenna to the antenna output ANT ´. Note: Each AC 3000 requires its own antenna!Several AC 3000s cannot be daisy-chained! ´ Connecting the transmitters You can connect up to eight SR 3054 transmitters or up to four SR 3056 twin transmitters to the AC 3000. Use 50-Ohm BNC cables to connect the transmitters to the RF inputs RF IN 1 to RF IN 8 ». Connecting the mains cable Connect the mains cable to the IEC mains socket to the mains. Note: 8 and The AC 3000 can be connected to any mains power supply with 100 V to 240 V AC (50 to 60 Hz). 6 Operation Turning the AC 3000 on and off ³ To turn the AC 3000 on, press the POWER (ON/OFF) switch ·. To turn the AC 3000 off, press the POWER (ON/OFF) switch · once more. RF signal indication The AC 3000 features eight control LEDs which will light up if an input signal is present at the corresponding input. Troubleshooting One or several LEDs for input signal indication light up do not Check if transmitters are connected to the corresponding inputs. Check if the corresponding transmitters are turned on. Disturbed reception or no reception Possible causes: Transmitting antennas are not within the reception area Transmitters or receivers are not turned on Batteries are not inserted into the receiver or batteries are low The antennas are not connected correctly The connecting cables are defective Too high cable attenuation due to too long antenna cables or wrong type of antenna cable The selected transmission and receiving frequencies are not within the frequency window The frequencies are not intermodulation-free 7 Accessories The following accessories are available from Sennheiser: A 2003 UHF Passive directional antenna Cat. 03658 A 1031 U Passive omni-directional antenna Cat. 04645 GZL 1019 A1 BNC-BNC coaxial cable, length 1 m Cat. 02324 GZL 1019 A5 BNC-BNC coaxial cable, length 5 m Cat. [. . . ] Your legal rights against the seller, resulting from the contract of sale, are not affected by this guarantee. The guarantee can be claimed in all countries outside the U. S. provided that no national law limits our terms of guarantee. CE Declaration of Conformity This equipment is in compliance with the essential requirements and other relevant provisions of Directives 1999/5/EC, 89/336/EC or 73/23/EC. The declaration is available on the internet site at www. sennheiser. com. [. . . ]