User manual SENNHEISER SK 250

[. . . ] Its flat shape and small dimensions make this design especially well - suited for particular applications in which an inconspicuous appearance is required, as is the case with film and television productions, for example. To reduce interference and to improve the signal-noise ratio, SK 50 and SK 250 transmitters are equipped with the "HiDyn plus" noise reduction system. In combination with a receiver which is also equipped with this system (e. g. [. . . ] POSSIBLE COMBINATIONS OF TRANSMITTERS WITH THE QUICK-CHANGE ENERGY PACK FIG. 6 SK 50-UHF SK 50-UHF SK 50-UHF SK 50-UHF SK 50 BA 50 B 50 B 250 BA 250 SK 250 SK 250-UHF SK 250-UHF SK 250-UHF SK 250-UHF B 50 B 250 BA 50 BA 250 The SK 250 / B 50 and SK 250 / BA 50 combinations are not possible because the power of the battery / rechargeable battery pack is not adequate for this transmitter. 5. CHANNEL SELECTION To select the appropriate channel or the appropriate frequency in accordance with the type plate, move the channel selection switch 2 to the desired position. 6. SWITCHING ON After attaching the quick-change energy pack, the transmitters is switched on by moving the operating switch 4 into the "ON" position. Should the operating indicator not light up, check the quick-change energy pack. 24 7. SENSITIVITY SELECTOR SWITCH The sensitivity selector switch 6 can be used to adapt the gain of the microphone input in 8 steps to the level of the sound expected. This setting is to be made in combination with a receiver which has a peak indicator available, such as the EM 1046. The sensitivity is set correctly when the "peak" indicator 5 lights up brightly during level peaks. The microphone is to be held or mounted in its position for later use when setting. The corresponding display on the EM 1046 receiver indicates a maximum deviation of approx. In practice, the following guide values have proven themselves for the adjustment of the sensitivity setting: Position 2, 3 Position 3, 4, 5 Position 6, 7 Position 8 = = = = Loud voices, songs, theatre Normal voices, talkshows, interviews Soft voices Use only for connection with a dynamic microphone ! 8. ATTACHMENT OF THE BODY-PACK TRANSMITTER Its small dimensions and flat form make it possible to carry the transmitter easily in a jacket pocket or trousers pocket. The device is to be protected against falling out by a tight gripping clip with which the transmitter can also be attached to the waistband or to a belt (Page 26, Fig. To attach the transmitter with the connections facing downwards, simply reverse the clips. The nylon transmitter pouch with Velcro closure (accessory) provides effective protection against moisture for actors who perspire heavily. 25 FIG, 7 Note: The transmitter can also be attached so that the cable and antenna point downwards. 9. LICENSING REGULATIONS The type plate contains the channel data and the transmit frequency data as well as the BZT approval, which you require for your application for the licence from the Post Office. TECHNICAL DATA Transmit frequencies Frequency range Switching band width Frequency stability Spurious and emmissions Modulation Nominal / peak deviation Compander Input sensitivity for peak deviation Audio frequency range Dynamics THD Connections Dimensions with power pack Weight with power pack SK 50 UHF / SK 250 UHF 16 450 - 960 MHz 24 MHz ± 5 ppm < 4 nW FM ± 40 kHz / ± 56 kHz Sennheiser HiDyn plus 13. 2 mV - 1. 55 V 8-position switch 70 Hz - 20 kHz 110 dB(A) eff. < 0. 3 % (nominal peak / 1 kHz) AF: Lemo special (3-pin) RF: Lemo special Koax 94 x 60 x 17 mm with B 50 / BA 50 116 x 60 x 17 mm with B 250 / BA 250 approx. 230 g with B 250 / BA 250 SK 50 UHF 50 mW / -3 dB B 50: > 4. 5 h B 250: > 9 h BA 50: > 3 h BA 250: > 5 h 1 1 1 1 1 1 1 1 SK 250 UHF 250 mW / -1 dB cannot be used B 250: > 3 h cannot be used BA 250: > 2. 5 h RF output power Operating time with primary cells Operating time with rechargeable battery Delivery includes for SK 50 UHF SK 50 UHF body-pack transmitter marking set antenna (aligned) instructions for use SK 250 UHF body-pack transmitter marking set antenna (aligned) instructions for use Delivery includes for SK 250 UHF Erros and omissions excepted. TECHNICAL DATA Transmit frequencies Frequency range SK 50 VHF 16 SK 50 VHF (1) 138 . . . [. . . ] Zur sachgemäßen Umsetzung der in den EG-Richtlinien genannten Anforderungen wurden folgende Normen herangezogen: ETS 300 445 ETS 300 422 Bemerkung: Vor Inbetriebnahme sind die jeweiligen länderspezifischen Vorschriften zu beachten! CERTIFICATE OF CONFORMITY Sennheiser electronic GmbH & Co. KG, Am Labor 1, D-30900 Wedemark declare that this device conforms to the basic requirements of EEC Directive 89/336/EEC. To effect correct application of the requirements stated in the EEC Directives, the following standards were consulted: ETS 300 445 ETS 300 422 Important: Before putting the device into operation, please observe the respective country-specific regulations! DÉCLARATION DE CONFORMITÉ Sennheiser electronic GmbH & Co. [. . . ]