Abstract: What is described is an antenna coupler for testing of wireless devices, said coupler comprising an antenna element for wireless communication with the wireless device and an accommodating element for holding the wireless device, wherein the accommodating element can be fastened in various positions relative to the antenna element by a fastening means. As an alternative or in addition, a releasable displacement of the antenna element may also be effected. In one embodiment, the fastening means is a slider, which is displaceable along the housing of the antenna coupler and carries the holder.

Abstract: A space-saving and user-friendly operating device includes a rotary transducer to which a rotating wheel is connected. The operating device also includes at least one tracer arranged behind the rotating wheel section, wherein a pressure produced by the rotating wheel section also produces a pressure on the tracer.

Abstract: A method for frequency calibration of attesting apparatus for testing or mobile terminals, such as mobile or cellular telephones, provided for operation in a mobile communication net includes testing apparatus that listens to an established communication based on a data communication between the mobile terminal and the mobile telecommunication net. Information signals underlying the communication are at least partially sampled and evaluated by the testing device. Based on this evaluation, a reference frequency unit incorporated in the testing device is calibrated. Preferably, bursts of the mobile terminal establishing the data communication are analyzed by testing apparatus as the information signals.

Abstract: The present invention relates to a method and a apparatus for determining disturbed and/or occupied frequency channels of a mobile communication net in which after registration of a mobile telephone onto a testing apparatus measurement report parameters between the mobile telephone and the testing apparatus in frequency channels to be probed are detected and evaluated. Further, a measurement report parameter is selected for the channels to be probed wherein the selected measurement report parameter is channelwise detected in the channels to be probed with a suitable RF level and compared to a threshold value, wherein the probed channel is recognized as disturbed and/or occupied when there is a significant difference of the measurement report parameter to the threshold value. Preferably, the measurement report parameters of disturbed and/or occupied frequency channels are displayed as a function of the probed channels.