Glossar

ASIO

Audio Stream Input/Output (ASIO) is a computer sound card driver protocol for digital audio specified by Steinberg, providing a low-latency and high fidelity interface between a software application and a computer’s sound card. ASIO allows musicians and sound engineers to access external hardware directly. Interface support is normally restricted to Microsoft Windows.

Deviation

Modulation deviation; modulation of the transmitter.

Easy Setup

Function for allocating unused frequencies; a frequency presetscan can be performed to check all factory presetfrequencies (presets). The spectrum of the selected frequency range is only checked selectively.

Firmware

Software that resides on a chip in the device. It can and, sometimes, must be updated. Updates can be downloaded from the Sennheiser website.

Frequency scan

Function for detecting (identifying) unused and occupied frequencies in the immediate vicinity. The complete spectrum of the selected frequency range is checked. The detected intermodulation-free frequencies can be allocated to the devices manually or automatically.

Intermodulation

Interference due to intermodulation can occur if at least 2 transmitters close to the receiving antenna produce high input signals in the receiver. The two high frequencies generate intermodulation products at nonlinearities in the receiver (e.g. in the mixer). This can also occur if 2 transmitters are operated too close to one another.

Fully new frequencies result from this which may interfere with the system’s other usable frequencies.

Intermodulation

Störungen durch Intermodulationen können auftreten, wenn wenigstens 2 Sender zu nahe an der Empfangsantenne hohe Eingangssignale am Empfänger erzeugen. Die beiden Frequenzen mit den hohen Pegeln bilden an Nichtlinearitäten im Empfänger (z. B. im Mischer) Intermodulationsprodukte.

Diese Störungen können auch beim Betrieb von zwei Sendern auftreten, wenn sie zu nah beieinander betrieben werden. Es entstehen vollkommen neue Frequenzen, die unter Umständen andere Nutzfrequenzen des Systems stören.

Panels

Each panel displays a channel. The panels contain, among other information, the name of the device, the current frequency and the field strength display.

Presets

Unchangeable, factory presetfrequencies that are stored in the channels of a channel bank (except channel bank “U”).

The frequencies within a channel bank are intermodulation-free.

Professional Setup

Function for allocating compatible frequencies; a frequency presetscan can be performed to check the complete spectrum of the selected frequency range; interfering frequencies from external devices can be excluded before the allocation of frequencies.

Squelch

Squelch is a circuit function that eliminates annoying noise (hissing noise) when the transmitter is switched off or when there is no longer sufficient RF power received by the receiver. The squelch suppresses all signals that fall below a certain threshold value. Only if a wanted signal of sufficient strength is received does the squelch open again.

WDM

The Windows Driver Model (WDM) is a framework for device drivers that was introduced with Windows 98 and Windows 2000.

WDM drivers are designed to be forward-compatible so that a WDM driver can run on a version of Windows newer than what the driver was initially written for, but doing that would mean that the driver cannot take advantage of any new features introduced with the new version.