Antenna Splitter ASA 1 Instruction manual
Contents Contents Important safety instructions................................................ 2 The ASA 1 active antenna splitter ........................................ 4 Combination possibilities of ASA 1/ASA 1-1G8 .............................................................. 5 Delivery includes....................................................................... 5 Operating elements.................................................................. 6 Putting the ASA 1 into operation................
Important safety instructions Important safety instructions 2 | ASA 1 • Read this instruction manual. • Keep this instruction manual. Always include this instruction manual when passing the device on to third parties. • Heed all warnings and follow all instructions in this instruction manual. • Clean only with a slightly damp cloth. • Refer all servicing to qualified service personnel.
Important safety instructions Replacement parts When replacement parts are required, be sure the service technician uses replacement parts specified by Sennheiser or those having the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. Safety check Upon completion of any service or repairs to this device, ask the service technician to perform safety checks to determine that the device is in a safe operating condition.
The ASA 1 active antenna splitter The ASA 1 active antenna splitter The ASA 1 active antenna splitter has been designed to enable routing of UHF antenna signals to several receivers in a multi-channel system. Up to four diversity receivers may be supplied with signal by only two antennas. The integral RF amplifiers ensure that the ASA 1 does not introduce any additional UHF signal loss.
Delivery includes Combination possibilities of ASA 1/ASA 1-1G8 The ASA 1 active antenna splitter is also available for the 1785–1805 MHz frequency range (ASA 1-1G8). The following table shows the combination possibilities for both devices.
Operating elements Operating elements 1 2 9 1 2 3 4 5 F 7 8 9 6 | ASA 1 8 7 6 5 4 3 Standby button Operation indicator Cable grip for cable of mains unit DC IN socket for connection of NT 1-1 mains unit BNC socket RF OUT A RF output only for connection of an additional ASA 1 (to create a 1-to-8 diversity splitter) Four BNC sockets A1 to A4 RF outputs of diversity section A for connection of the receivers Each of these RF outputs can power one receiver.
Operating elements Block diagram The below block diagram (also depicted on the base of the device) shows the signal flow in the device.
Putting the ASA 1 into operation Putting the ASA 1 into operation Preparing the ASA 1 for use Setting up the ASA1 on a flat surface For table-top use, fix the device feet to the base of the ASA 1. CAUTION Risk of staining of surfaces! Surfaces are often treated with varnish, polish or synthetics which might cause stains when they come into contact with other synthetics such as the device feet. 왘 Do not place the ASA 1 on delicate surfaces.
Putting the ASA 1 into operation Fastening the stacking elements The stacking elements are designed to help protect the operating elements from damage or deformation, e.g. if the ASA 1 is dropped. To fasten the stacking elements: 0 왘 Unscrew and remove the four recessed head screws (M4x8). 왘 Secure the stacking elements 0 to the ASA 1. Stacking several ASA 1 You can stack the ASA 1 and the receivers on top of each other. CAUTION Danger of injury due to toppling stacks! High stacks can easily topple over.
Putting the ASA 1 into operation Mounting the ASA 1 into a 19” rack Do not fit the device feet when mounting the ASA 1 into a 19” rack. CAUTION Risks when rack mounting the device! When installing the device in a closed or multirack assembly, please consider that, during operation, the ambient temperature, the mechanical loading and the electrical potentials will be different from those of devices which are not mounted into a rack.
Putting the ASA 1 into operation Rack mounting one ASA 1 왘 Unscrew and remove the two recessed head screws (M4x8) on one side of the ASA 1. B A A 왘 Hold one rack mount “ear” to the ASA 1. 왘 Secure the rack mount “ear” A to the side of the ASA 1 using the two recessed head screws. 왘 Repeat for the other rack mount “ear” as described above. 왘 Secure the blanking plate B to one of the rack mount “ears” A using two recessed head screws (M6x10).
Putting the ASA 1 into operation If you are using rod antennas and do not want to front mount them: 왘 Insert the two blanking plugs C into the holes of the blanking plate: C To mount the ASA 1 into the rack: 왘 Slide the ASA 1 with the mounted blanking plate into the 19” rack. 왘 Secure the rack mount “ears” A to the 19” rack.
Putting the ASA 1 into operation Rack mounting two devices into the same 19” slot 왘 Place the two devices (e.g. the ASA 1 and a stationary receiver) side by side upside-down onto a flat surface: E A A 왘 Secure the jointing plate E to the devices using six recessed head screws (M3x6). 왘 Secure the rack mount “ears” A to the devices as described in the section “Rack mounting one ASA 1” on page 11. To mount the devices into the rack: 왘 Slide the devices into the 19” rack.
Putting the ASA 1 into operation Connecting devices to the ASA 1 and switching the ASA 1 on Connecting the antennas Connecting remote antennas To ensure optimum reception even under difficult reception conditions, we recommend using remote antennas.
Putting the ASA 1 into operation Connecting the receivers You can connect up to four stationary receivers to the ASA 1. The splitter also incorporates DC distribution for powering the receivers: 6 Device/product class Combination possibilities Receivers EM x00 G3-A1, -A, EM x00 G3-1G8 -G, -GB, -B, -C, -D, -E ASA 1 ASA 1-1G8 왘 Connect one of the receiver’s antenna inputs to one of the BNC sockets A1 to A4 F. Suitable BNC cables are included in the delivery.
Putting the ASA 1 into operation Switching the ASA 1 on 2 1 왘 Briefly press the Standby button 1. The operation indicator 2 lights up green. The RF signals of the connected antennas are distributed to all connected receivers. Setting the ASA 1 to standby mode 2 1 왘 Press the Standby button 1 for approx. 2 seconds. The operation indicator 2 goes off. The ASA 1 switches to standby mode. Connected antenna boosters are switched off.
Putting the ASA 1 into operation Making an 8-channel system using the ASA 1 There are two ways to link two ASA 1 together to create a 1-to-8 diversity splitter: 1. Two antennas supply an 8-channel system 2. Two 4-channel systems are linked together The following table shows the recommended maximum cable lengths and from which cable lengths onwards you should use AB 3 antenna boosters when making an 8-channel system. Device Frequency range around Number Max.
Putting the ASA 1 into operation First possibility: Two antennas supply an 8-channel system ASA 1 ASA 1 AB 3* AB 3* For information on the number of AB 3 antenna boosters and on the maximum cable lengths, please see table on page 17.
Putting the ASA 1 into operation Second possibility: Linking two 4-channel systems ASA 1 ASA 1 AB 3* AB 3* For information on the number of AB 3 antenna boosters and on the maximum cable lengths, please see table on page 17.
Cleaning the ASA 1 Cleaning the ASA 1 CAUTION Liquids can damage the electronics of the device! Liquids entering the housing of the device can cause a short-circuit and damage the electronics. 왘 Keep all liquids away from the device. 왘 Do not use any solvents or cleansing agents. 왘 Before cleaning, disconnect the ASA 1 from the mains (see page 16). 왘 Only use a slightly damp cloth to clean the device. If a problem occurs...
Specifications Specifications ASA 1 antenna splitter 2 x 1:4 or 1 x 1:8, active Antenna cable 8 items, 50 cm, BNC Frequency range ASA 1: 470 to 870 MHz at –3 dB ASA 1-1G8: 1785 to 1805 MHz at –3 dB Amplification In A – Out A 0 ± 1 dB In A – Out A1 ... A4 0 ± 1 dB In B – Out B1 ... B4 0 ± 1 dB IIP3 20 dBm min. 23 dBm typ.
Manufacturer Declarations In compliance with Europe EMC Radio Safety USA EN 301489-1/-9 EN 300422-1/-2 EN 60065 CAN ICES-3(B)/NMB-3(B) 47 CFR 15 subpart B (ASA 1 only) Australia Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this product. Additional warranty conditions can be found on our website www.sennheiser.com under “Service & Support” and “Terms of Warranty”.
Manufacturer Declarations FCC This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This class B digital device complies with the Canadian ICES003. Changes or modifications made to this equipment not expressly approved by Sennheiser electronic Corp.
Sennheiser electronic GmbH & Co. KG Am Labor 1, 30900 Wedemark, Germany www.sennheiser.com Publ.
