User manual SENNHEISER SR 3254

[. . . ] Instructions for use SR 3254 SR 3256 4 SR 3254 SR 3256 Contents Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SR 3254/SR 3256 transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Delivery includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overview of operating controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Note A cable grip is particularly important when the transmitter is permanently rack-mounted. Inside the rack there are often a large number of cables ­ a cable grip prevents the cables from pulling each other out. Using transmitters in a multi-channel system You can combine several transmitters to make a multi-channel system. To do so, you require an antenna combiner (e. g. the AC 3000, see "Accessories" on page 29) which allows you to combine the signals of up to four twin receivers onto a single antenna (see diagram below). For detailed information on setting up a multi-channel system and on connecting the transmitters, please refer to the operating manual of the antenna combiner. ANT RF OUTPUT 8:1 15 Mounting and connecting remote antennas Use a remote antenna when the transmitter position is not the best antenna position for optimum transmission. You can choose between two antennas (see "Accessories" on page 29): A 2003 UHF passive directional antenna A 1031 passive omni-directional antenna A 2003 Use a low-attenuation 50- cable to connect the antenna to the transmitter. Ready-made antenna cables from Sennheiser are available as accessories with length of 5 m and 10 m. If possible, use a short antenna cable and as little connections as possible, since long cables and many connectors lead to an attenuation of the antenna signal. Position antennas in the same room in which the transmission takes place!Maintain a minimum distance of 1 m from metal objects (including reinforced concrete walls)!Connecting the mixing console Connect the mixing console to the XLR-3 sockets AF IN (L) and AF IN (R) + MONO . Note Any unit that is only suitable for mono operation must be connected to the XLR-3 socket AF IN (R) + MONO . In this case, set the transmitter to mono operation (see "Switching between mono and stereo operation" on page 22). A 1031 16 Using the transmitter Switching the transmitter on/off Press the POWER button ¾ to switch the transmitter on or off. After switch-on, the LC display is backlit and the last transmission frequency set is displayed. Until the PLL has locked on the desired transmission frequency, the transmitter is muted. "MUTE" appears on the display and the LCD bargraph for RF output power (RF) ´ indicates 0 %. Note The POWER button ¾ works in the secondary circuit of the integrated mains transformer, and thus only switches the low voltage side. For larger installations with several transmitters, a complete mains disconnection can best be achieved by a central ON/OFF switch. 17 Connecting the headphones/monitoring the audio signal Attention!Even short exposure to high volume levels can damage your hearing!Set the volume for the connected headphones to the minimum before putting the headphones on. Do not listen at higher volume levels than with loudspeakers. Connect headphones with a ¼" (6. 35 mm) stereo jack plug to the headphone output ³ to monitor the stereo audio signal present at the audio inputs AF IN (L) and AF IN (R) + MONO. [. . . ] 002976 EK 3253 A Monitoring receiver Cat. 500522 EK 3253 B Monitoring receiver Cat. 500523 EK 3253 C Monitoring receiver Cat. 500524 EK 3253 D Monitoring receiver Cat. [. . . ]