User manual SENNHEISER SI 1015 DATASHEET

[. . . ] SI 1015 IR Audio Transmission Technology | Modulators/Radiators General Description The SI 1015 wideband modulator uses the extremely reliable carrier frequencies 2. 3 and 2. 8 MHz and can be operated in single-channel, two-channel and stereo modes. The modulator is fitted with two balanced XLR-3 audio inputs and IR monitoring diodes. [. . . ] Together with a GA 1031 CC blank module, the compact SI 1015 can easily be mounted into a 19" rack. The modulator's controls are shown in the drawing on the left: On the very left of the front panel is the on/off switch, and the LED next to it shows whether a DC voltage is present. 1 1 2 3 4 23 4 5 6 7 8 The AF levels of channels A and B can be adjusted with controls 4 and 6. The AF level should be adjusted in such a way that the peak LEDs occasionally light up at peak volumes. With the channel selector switch (7), the modulator can be switched between mono operation on channels A or B, two-channel dual mono (A/B) and stereo operation. In stereo operation the control amplifiers of the channels are coupled. The transmitted IR signal can be checked on the modulator, as the SI 1015 features two monitoring diodes (8). Please remember to use a receiver which operates on the carrier frequencies 2. 3 and 2. 8 MHz. The back panel of the modulator features the DC input socket (see diagram on the left) where the modulator is connected to the mains via the NT 1015 mains unit. There is a cable grip for the power cable which should be used when rack-mounting the modulator as it prevents the connector from falling off or being pushed out of the socket. The audio signals are fed to the modulator via two electronically balanced XLR-3 input sockets (15 and 17, for channel B and A). The input sockets have line sensitivity but can optionally be fitted with microphone sensitivity for dynamic and condenser microphones (12 V phantom powering possible). [. . . ] The earlier SZI 20 radiator cannot be used, as it cannot work with the frequencies 2. 3 and 2. 8 MHz. Other older radiator models such as the SZI 1219 A and SZI 1019 A series models are also not suitable. On/off switch Mains indicator Peak LED for channel A Level control for channel A 5 Peak LED for channel B Front panel of the SI 1015 6 Level control for channel B 7 Channel selector switch 8 IR monitoring diodes 9 9 10 11 12 13 14 10 11 12 13 RF output 1 (BNC) RF terminal 1 DC output terminal 1 DC output terminal 2 RF terminal 2 RF output 2 (BNC) Audio input B (XLR-3) Cable grip Audio input A (XLR-3) DC input socket (for NT 1015) Back panel of the SI 1015 Mounting the SI 1015 into a rack: the modulator is combined with a GA 1031 CC blank module to form a 19" unit (left), the cable grip prevents the power cable from being pulled off (right). Connecting a radiator to the barrier strip of the SI 1015: Press down a lug with a screwdriver to open the corresponding terminal [. . . ]