User manual SENNHEISER SKI 1011

[. . . ] However, the introduction 01 a new method 01 modulation - the so-called impulse-Irequency modulation With this lorm 01 modulation the current consumption 01the transmitter is kept low and the transmission range is increased as compared to that 01 mt>re conventional transmitters. The system as a whole consists 01the lollowing components: Inlrared transmitter SKI1 011, inlrared receiver EKI1 011, transponder SZT 1011, induction loop EZT 1011 and charging unit SZL 1011. Alongside the operation 01the transmitter SKI1 011 and the receiver EKI1 011 this user's guide also contains a rough outline 01the roles played by the other units wh ich make up this system. [. . . ] (2) Hook the neck strap into the corresponding notches and lock into position by pulling upwards resp. Put on the receiver and repeat the above with the chest strap. headphones , stethoclip-type headphones , induction plates or the induction loop EZT 1011 can be connected to the receiver's signal output. The impedance of the connected load should be at least 10 Q. the microphone input is suitable for the connection of plug-in microphones of the type MKE 2012 (omnidirectional characteristic) or MKE 4012 (cardioid characteristic). If, instead of a plug-in microphone, a hearing-aid is connected to this socket, an automatic fade-out device already built into the EKI1 011 ensures that the sensitivity of the hearing-aid microphone is lowered by 20 dB everytime a signal is received over the infrared transmission path. However, this feature can only be taken advantage of when the hearing-aid in question is equipped with an audio-input. Audio equipment (tape recorders, record players) can be connected to the 3. The wiring and data of both sockets may be taken from the technical data. Hook the neck strap into the corresponding notches and lock into position by pulling upwards resp. Put on the transmitter and repeat the above with the chest strap. Ln this mode, the microphone signal can be added to the infrared signal by means of dial A. The volume can be controlled by means of dial B. iR = Infrared reception + microphone automatic. In this mode, the sensitivity of the microphone connected to the receiver is lowered byaround 20 dB whenever a modulated infrared signal is present, Le. PleaS'e note that the receiving lens should not at any time be obstructed bya hand or clothing. General operating instructions Experience has shown that on lirst coming into contact with this transmission medium, operators 01inlrared systems sometimes make some grave mistakes. In orderto avoid this, here are a lewtips on inlrared transmission in general: The invisible inlrared light still obeys the same laws as visible light. [. . . ] The only primary batteries which may be used are Alkali-Manganese batteries as with other types 01primary cell it is no Ionger possible to guarantee the problem-Iree operation 01the transmitter and receiver. 1Ithe units are to be put to Irequent use, a more practical solution is offered by rechargeable NiCd-accus. These can be recharged in the charging unit SZL 1011 wh ich, in accordance with the different current consumptions 01the transmitter and the receiver, is litted with a quick charging bay lor the transmitter and anormal charging bay lor the receiver. [. . . ]