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R a d i o S y s t e m s , I n c .

D A - 2 / 4 x 4 a M a n u a l

3 / 0 4

P a g e 1

DA 2x4a & 4x4a

Distribution Amplifier

Manual

EMC and Safety Conformity

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Summary of Contents for ADA-2x8SS

Page 1: ...R a d i o S y s t e m s I n c D A 2 4 x 4 a M a n u a l 3 0 4 P a g e 1 DA 2x4a 4x4a Distribution Amplifier Manual EMC and Safety Conformity ...

Page 2: ... 3 Mounting 3 Operation 3 Connections 3 Connection Examples 5 Schematic Page 1 6 Schematic Page 2 7 Parts Layout Page 1 8 Parts Layout Page 2 9 Parts List 10 Specifications 11 Using Active Balanced Circuitry 12 Warranty 14 Repair Policy 14 Return Instructions 14 Declaration of Conformity 15 ...

Page 3: ...eps by changing the internal gain straps To locate and reset these jumpers refer to the parts layout for the location of JU1 and JU2 The lid of the unit must be removed to access these jumpers Place a shorting strap across the center and rear pin pin towards the rear barrier strip to increase input gain by 10dB Place a shorting strap across the center and forward pin to increase input gain by 20dB...

Page 4: ...utputs mono 2 inputs x 4 outputs stereo Additionally bywiringtheinputsinparallel thefollowingconfigurationispossible 1 input x 16 output mono Refer to the connection diagram on the following page for details AC line voltage is user selectable from the lid of the cabinet by inserting a thin shafted screw driver through the vent holes to move the red line voltage selector switch to the left for 230V...

Page 5: ...A 2A 1A 1A G A Outputs No straps Left or Input 1 Right or Input 2 For use as a 1 input x 16 output mono Left or Input 3 Right or Input 4 For use as a 4 input x 4 output dual stereo or quad mono Note The 2x4 mono version uses only the left hand circuit board Configure it as shown above for Illustration 1 1 input x 8 output mono Illustration 3 2 input x 4 output stereo G 4D 4D 3D 3D 2D 2D 1D 1D G D ...

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Page 8: ...R a d i o S y s t e m s I n c D A 2 4 x 4 a M a n u a l 3 0 4 P a g e 8 Parts Layout Page 1 ...

Page 9: ...R a d i o S y s t e m s I n c D A 2 4 x 4 a M a n u a l 3 0 4 P a g e 9 Parts Layout Page 2 ...

Page 10: ...R a d i o S y s t e m s I n c D A 2 4 x 4 a M a n u a l 3 0 4 P a g e 1 0 Parts List ...

Page 11: ... 4dBm to 24dBm with 600ohmload Crosstalk 105dBover20Hz 20kHz Noise 102dB below 4dBm output level unity gain measurement bandwidth 20 Hz 20kHz with 600 ohm inputandoutputtermination Maximuminput 28dBm Maximumoutput 25dBm with 600 ohm load Headroom 21dB above 4dBm output with 600 ohm load DynamicRange 123dB MaximumGain jumper selectable for 16dB 26dB or 36dB CMRR 50dB over 20Hz 20kHz InputImpedance ...

Page 12: ...rom an active balanced source use coaxial wire to center conductor and ground to shield leaving the output unconnected To feed an active balanced input from a single ended source use coaxial wire connecting the hot center conductor to Connect the shield to ground and put a jumper from ground to When driving an active balanced input from a transformer balanced floating source use two conductor shie...

Page 13: ...layed by running the two inputs in the add mode with one input switched to invert To perform a test with single ended equipment and outputs must be tested independently and their results added Testing only a single output results in a 6 db loss in output level The active balanced equipment interconnection format makes possible state of the art fidelity Careful attention to detail and conservative ...

Page 14: ...dence During the warranty period there will be no charge for parts or service made to units which show no sign of misuse by customer or lightning caused damage The customer is responsible for the cost of shipping their unit back to Radio Systems for repair During the warranty period shipment of small parts and assemblies may also be made at a charge to the user Emergency shipments of replacement p...

Page 15: ...er modelDA 4x4a To which this declaration relates to is in accordance with the following product standards EN55013 Emission EN55020 Immunity EN61000 Harmonic Voltage Fluctuations EN60065 Product Safety Following the provisions of 89 336 EEC EMCDirective 92 031 EEC Amendment Directive of 89 336 EEC 73 023 EEC Low Voltage Directive 93 068 EEC Amendment Directive of 73 023 EEC ______________________ ...

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