User manual SENNHEISER SZI 30

[. . . ] Technical Data SI 30 Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . wideband FM Nominal deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 kHz Carrier frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. 3 MHz, 2. 8 MHz AF input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-pin Texas socket AF input voltage for nominal deviation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 mV ­ 4 V (automatic modulation control) AF frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ­ 18, 000 Hz THD (1 kHz, nom. [. . . ] Please order it separately in the version you require (European, UK or USA versions available). j j j SI 30/SZI 30 IR Audio Transmission Technology | Modulators/Radiators 90 mm m2 80 70 60 50 40 30 20 10 0 25 mm 118 mm 1 2 3 4 5 6 7 8 9 10 11 12 Channels Dimensions of the SI 30 / SZI 30 Coverage area of the SI 30 / SZI 30 Recommended Accessories Plug-in mains unit NT 20-1 European version NT 20-1-120 USA version NT 20-1-UK UK version Mains unit for up to four SI 30 / SZI 30 NT 20-4 European version NT 20-4-120 USA version NT 20-4-UK UK version RF connection cable (2 x 3. 5 mm jack) KR 20-7 (7. 5 m) KR 20-015 (0. 1 m) AF extension cable (2 x Texas) KK 20-1 (1 m) KK 20-7 (7. 5 m) KK 20-015 4-way "octopus" cable (Texas) IZK 20 mounting clamp IZM 20 cluster mounting kit j j j j j j j Cat. 003561 SI 30/SZI 30 IR Audio Transmission Technology | Modulators/Radiators SI 30 Modulator/Radiator The SI 30 is a miniature combination modulator/radiator. It is slim and compact but can cover areas of up to 80 m2 in mono operation. When the audio signal at the SI 30 input exceeds a certain threshold value, the modulator/radiator is switched on automatically. It switches off again when there has not been an audio signal for about 2 minutes. Transmission is indicated by a green LED on the left of the front panel. The radiator of the SI 30 comprises 11 IR transmission diodes connected in series. The AF input of the SI 30 is a 3-pin Texas socket located at the back of the unit, on the left. It is an unbalanced stereo input, so you should not use long connection cables. A 2 m connection cable with 3. 5 mm stereo jack to a 3-pole Texas connector is supplied as standard. An automatic modulation control adapts to audio signals between 45 mV and 4 V. This process is effected over a period of about one minute, so that short speaking pauses do not entail a greater amplification. Problems may arise when you are working with microphones and very different signal levels. When connecting the SI 30 to headphone sockets of TV sets or similar sound sources, you should adjust the level to a medium value. With the channel selector switch, you can choose between channel 1 or 2 transmission or stereo operation. In mono operation, the integrated radiator and all connected radiators can cover a greater area. For mono transmission, choose the frequency suitable for the receiver, e. g. 1 1 2 3 4 2 3 4 The RF output for connection of additional radiators is designed as a 3. 5 mm mono jack socket. You can connect both SZI 30 mini radiators or high-power radiators such as the SZI 1029. For short distances, you can use connection cables from the Sennheiser accessory range. [. . . ] As auxiliary radiators in combination with the SZI 1029, for covering room niches and recesses. The individual areas within the museum have to be optically decoupled, giving the visitor exactly the audio information which is associated with the exhibit he or she is facing ­ without having to switch channels. 10° 45m 42m 39m 36m 33m 10° 30m 27m 30° 24m 21m 40° 18m 15m 50° 12m 9m 6m 3m 50° 40dB 40° 30° 60° 70° 80° 90° 60° 70° 80° 90° Polar pattern of the SI 30 / SZI 30 free field, extraneous light < 100 lx, single-channel operation 10° 45m 42m 10° 20° 20° 20° 30° 30° 39m 36m 33m 30m 27m 24m 21m 40dB 18m 15m 12m 9m 6m 3m ° 40 40 ° 26dB 50 50 ° 60° 60° 60° Four SZI 30, mounted at an angle of 60° to one another. For comparison purposes, the coverage of a single SZI 30 is shown at 30°. j 26dB j j 20° 20° With the IZK 20 mounting clamp and the IZM 20 cluster mounting kit, up to four SI 30/ SZI 30 can be mounted on top of one another. This makes it very easy to align them correctly, at an angle to one another. [. . . ]