SpeechLine Digital Wireless Antenna solutions and recommendations on antenna mounting for the SL Rack Receiver DW Sennheiser electronic GmbH & Co. KG Am Labor 1, 30900 Wedemark, Germany, www.sennheiser.com AN 1106 v3.0, Publ.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Contents Antenna solutions for SpeechLine Digital Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Antenna setup planning for SpeechLine Digital Wireless . . . . . . . . . . . . . . . . . . . . . . . . . 3 Mounting instructions for the AWM 2 and AWM 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Antenna mounting options .
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Antenna solutions for SpeechLine Digital Wireless This document gives an overview over several possibilities of mounting and using antennas for a SpeechLine Digital Wireless system. Furthermore, this document provides recommendations on several aspects which should be considered for the different antenna solutions.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Antenna mounting options As mentioned above, there are multiple possibilities for remote mounting the anntennas. In the following, we will explain the most common options with additional recommendations in order of preference.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Remote antenna distances and line of sight If you are using multiple antenna wall mounts (AWM 2/AWM 4) in one room or if individual installation and mounting of the antennas is desired, please observe the following aspects: f Position all antennas as close as possible to each other.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Option 2: Combining multiple links to one AWM 2/AWM 4 With this variant, you can use passive antenna splitters (SL PASC 2 or SL PASC 4) together with the AWM 2 or AWM 4 to combine the antenna signals from multiple receivers. This reduces the number of antenna cables required to a minimum.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Combining up to 4 links using the AWM 2 and the SL PASC 4 The following illustration shows an example of how to combine up to 4 links with one AWM 2 antenna wall mount. This reduces the number of antenna cables required from 8 to 2. AWM 2 Use the following Sennheiser cables for connecting the AWM 2 to the SL PASC 4: CL 1 PP (1 m / 3.3 ft) art. no. 507425 CL 5 PP (5 m / 16.4 ft) art. no.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Combining up to 8 links using the AWM 4 and the SL PASC 4 The following illustration shows an example of how to combine up to 8 links with one AWM 4 antenna wall mount. This reduces the number of antenna cables required from 16 to 4. Use the following Sennheiser cables for connecting the AWM 4 to the SL PASC 4: AWM 4 CL 1 PP (1 m / 3.3 ft) art. no. 507425 CL 5 PP (5 m / 16.4 ft) art. no.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Signal loss due to extension cables and antenna splitters In this scenario, the use of extension cables and antenna splitters with a remotely mounted antenna may result in loss of transmission power, depending on the cable length. You can compensate this signal loss by configuring the transmission power of the receiver accordingly.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Option 3: Rack mounting - front If you wish to install the antennas together with the receivers in a rack, we recommend mounting the antennas on the front side of the rack using the GA 4 mounting kit. f Always leave 1 U of space between receivers and antennas. f Position the antennas at an angle of about 45°.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Further important information on antenna usage Reflecting surfaces Electrically conducting surfaces (e.g. ceilings with metal constructions) can reflect the RF signal. The signal is reflected by the electrically conducting surface. At worst, the blue signal and the red reflected signal are out of phase when they reach the receiver so that the two signals cancel each other out.
Antenna solutions and recommendations on antenna mounting SpeechLine Digital Wireless - SL Rack Receiver DW Blocking effects from other transmitters As with all wireless microphone systems, suboptimal positioning of transmitters can lead to blocking effects. To avoid this, please follow these recommendations: f Position DECT telephone or DECT access points at least 7 m from the antennae. f Position other wireless devices such as mobile phones at least 1 to 2 m from the antennae.
