Sennheiser FT-906B20, FT-905A, FT-902S35, FT-906A20 HiDyn plus, Dynamics of the AF Input Signal

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HiDyn plus®

1.3

DYNAMICS OF THE AF INPUT SIGNAL

DYNAMICS OF THE AUDIO SIGNAL

IN THE RF-SIGNAL (MAX 60 DB)

COMPRESSION AT

EXPANSION AT THE

THE TRANSMITTER

RECEIVER

HIDYN plus®

HIDYN plus®

SYSTEM NOISE PLUS MODULATION/DEMODULATION

NOISE IN THE TRANSMITTER PATH

DYNAMICS OF THE AF OUTPUT SIGNAL

»HIDYN plus®« NOISE REDUCTION SYSTEM

The »HIDYN plus®« noise reduction system serves to reduce the effects of RF interference fields. It increases the signal-to-noise ratio and gets close to about 110 dB for peak modulation.

»HIDYN plus®« is a wideband compander system. It is a combination of a compressor at the transmitter (ratio 2:1) and an expander at the receiver, the compressor reducing the volume of the signal and the expander restoring it. The optimized dynamic range and the control amplifier in the transmitter effectively reduce modulation problems.

»HIDYN plus®« has been expecially developed by Sennheiser for studio and stage applications.

Its features:

extemely low degree of noise modulation

level compensation

excellent dynamic range due to the control amplifier

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Contents Instruction for USE LED indicators Monitor headphones Important Information IntroductionTechnical overview Computer control Diversity HiDyn plus Dynamics of the AF Input SignalBlock diagram EM Possible transmitter Receiver combinations EM 203 receiver SK 2012 TV HiDyn plus SKM 4031 TV-HiDyn plus EM 1046/2.2 SK 50 UHF / SK 250 UHF SKM EM 203 receiver SER 20 transceiver Putting the EM 203 receiver To work Mains connection Nota Bene Start-up procedure Operating indicationsAvailable modules EM 1046 RX Receiver module Monitor EM 1046 RX receiver module Operating Elements on the EM 1046 RX Module Receiver operation remains unaffected AdjustmentManipulation Function Display RX Use keys Additional frequencies can be selected, if Subsequently RF signal level/deviation/batery condition From page 24, CH Nota Bene From page 26, CH From page 27, CH Display4.1.5 Text/frequency/battery condition Display indicates again To stop storage EM 1046-U-H System configurations Identification dataRemote monitoring Transmitter battery Manipulation Function SET SET ESC Operating Elements LED indicators Monitor headphonesLED indicators Nota Bene Technical data Sennheiser Electronic KG