HOW DO I CONNECT THE M-AUDIO CAPTURE & PLAYBACK

ITEM: RTA000044631



Q: How do I connect the M-Audio Capture & Playback Adapter to the               
outside world (i.e. microphone/speaker requirements, telephone                  
line, etc.)?                                                                    
                                                                                
---------- ---------- ---------- --------- ---------- ----------                
A: M-AUDIO CAPTURE & PLAYBACK ADAPTER CONNECTION INSTRUCTIONS:                  
                                                                                
   Input Analog Performance --------------------------------                    
                                                                                
     Input Sampling Rate             44.1 KHz (stereo)                          
                                     88.2 KHz (mono)                            
     Input Channel Bandwidth         12 Hz to 20 KHz,                           
                                     3 dB cutoff (typical)                      
     Dynamic Range                   16-bit resolution                          
     Signal-to-noise ratio           80 dB  (typical)                          
     Line level input impedance      30K ohms (typical)                         
     Line level voltage              7 volts peak-peak maximum                  
     Microphone input impedance      20 K Ohms (typical)                        
     Microphone gain                 +33/+45 dB                                 
     S/(N+D)                         78 db (typical)                            
                                                                                
   Output Analog Performance -------------------------------                    
                                                                                
     Output Sampling Rate            88.2 KHz Both Channels                     
     Output Channel Bandwidth        12 Hz to 24 KHz,                           
                                     3 dB cutoff   (typical)                    
     Dynamic Range                   16-bit resolution                          
     Signal-to-noise ratio           80 dB   (typical)                          
     Line level drive capacity       10 K ohms minimum                          
     Line level voltage              7.0 volts peak-peak maximum               
     Speaker/Headphone drive         >= 4 ohms                                  
     Speaker power                   110 mw typical (8 ohm load)                
     S/(N+D)                         78 db (typical)                            
                                                                                
   Connectors ----------------------------------------------------              
                                                                                
                           Labeled (from top of rear bracket down)              
     Line input (1)        I         Mini-stereo phone jack (3.5mm)             
     Microphone input (1)  M         Mini-phone jack (3.5mm)                    
     Line output (1)       O         Mini-stereo phone jack (3.5mm)             
     Speaker (1)           S         Mini-stereo phone jack (3.5mm)             
                                                                                
   Power Consumption ---------------------------------------------              
                                                                                
     Test Condition            1 KHz, +7 dBV                                   
                                                                                
        +5 V           275 mA                                                   
       +12 V            70 mA                                                   
       -12 V            60 mA                                                   
                                                                                
   Note: The 60 milliamps from the -12 volts exceeds the 40 milliamps           
   per slot available in the Micro Channel computer. This will not cause        
   a problem in most systems, since most boards use very little -12 volt        
   power.                                                                       
                                                                                
    Input and Output Devices                                                    
    ========================                                                    
      You can use any of these devices with the M-Audio Capture and             
      Playback Adapter.  These options must be purchased separately             
      and they should meet the following specifications.                       
                                                                                
      o  Microphone for input:                                                  
           Required:                                                            
             3.5 mm mini jack connector                                         
           Recommended specifications:                                          
             Cardioid pickup pattern                                            
             600 ohms maximum impedance Cable length under 6 feet               
             Open circuit voltage sensitivity level between -60 (more           
               sensitive) and -80 db (less sensitive)                           
               Note:  Microphone sensitivity is based on 0 db = 1 volt          
                      per bar.  More sensitive microphones allow table          
                      top use.  Less sensitive microphones generally            
                      require hand-held operation.  Details on the              
                      sensitivity level can generally be found on the           
                      microphones spec sheet.                                  
             Frequency response (frequency curve) depends on desired            
               quality and application.  Guidelines:                            
                 Music applications:  20 Hz to 20 KHz  3.5 db                   
                 Speech applications: 50 Hz to 12 KHz  5.0 db                   
                                                                                
      o  Speakers                                                               
           4-8 ohms                                                             
           Shielded cables with 3.5 mm stereo mini jack connectors to           
             plug into the Audio Adapter and connectors on the other            
             end to match your speakers                                         
                                                                                
      o  Headphones                                                             
           8 ohm minimum                                                        
           3.5 mm stereo mini jack                                              
                                                                               
      o  Line input/output cables:                                              
           Shielded cables with 3.5 mm stereo mini jack connectors to           
             plug into the Audio Adapter with connectors on the other           
             end to match your other audio equipment (typically this            
             will be male RCA jacks)                                            
                                                                                
    Connecting Input and Output Devices                                         
    ==================================================                          
                                                                                
      Connecting Input Devices                                                  
      ------------------------                                                  
                                                                                
        Before connecting any input devices to the Audio Adapter, you           
        should run the basic diagnostics.                                       
        You can connect a microphone and/or a line level signal to the         
        Audio Adapter.                                                          
                                                                                
                                              _______                           
           ___________________________________\     |                           
                                              |     |                           
                ___                           |  o  |  LR and LL In             
               ¢   ¢                          |     |                           
               ¢___¢                          |  o  |  Microphone In            
                ___                           |     |                           
               ¢   ¢                          |  o  |  LL and LR Out            
               ¢___¢                          |     |                           
                         ____                 |  o  |  Speaker/Headphone        
                        ¢    ¢                |     |       Out                 
                        ¢    ¢                |     |                           
                        ¢____¢                |     |                          
                                              |     |                           
                                              |     |                           
           ______________                  ___|     |                           
                         \_________________\  |_____|                           
                                                                                
      Connecting a Microphone                                                   
      -----------------------                                                   
                                                                                
        You can plug a microphone into the second connector (Microphone         
        In) from the top of the Audio Adapter's retaining bracket.  The         
        microphone input uses a mini-phone jack (3.5 mm).  The                  
        microphone wire should be as short as possible (typically less          
        than six feet) to avoid noise pickup.                                   
                                                                                
      Connecting Line In to Other Equipment                                    
      -------------------------------------                                     
                                                                                
        You can plug a line level stereo signal into the first                  
        connector (LR and LL In) at the top of the Audio Adapter's              
        retaining bracket.  The line input connector is a 3.5 mm mini           
        stereo jack.  The line level input will receive normal levels           
        from other audio equipment outputs -- typically called "line            
        out".                                                                   
                                                                                
      Connecting Output Devices                                                 
      -------------------------                                                 
                                                                                
        Before connecting any output devices to the Audio Adapter, you          
        should run the basic diagnostics.                                       
                                                                               
        You can connect headphones, speakers and audio equipment to             
        the Audio Adapter.                                                      
                                                                                
      Connecting a Speaker/Headphone                                            
      ------------------------------                                            
                                                                                
        You can plug a speaker or headphone set into the bottom                 
        connector (Speaker/Headphone Out) of the Audio Adapter's                
        retaining bracket.  The speaker/headphone connector is a mini-          
        stereo phone jack (3.5 mm).  The output is capable of driving           
        loads greater than or equal to 4 ohms per channel.                      
                                                                                
      Connecting Line Out to Other Equipment                                    
      --------------------------------------                                    
                                                                               
        You can plug the third connector (LL and LR Out) from the top           
        of the Audio Adapter's retaining bracket to other equipment's           
        Line In.  The line output connector is a 3.5 mm mini stereo             
        jack.  The line level output will drive normal levels into              
        inputs of other audio equipment -- typically called "line in".          
                                                                                
      Connecting the Y Cable                                                    
      ----------------------                                                    
                                                                                
        The Y cable allows you to connect two headphone sets to the             
        M-Audio Capture and Playback Adapter.  This cable is for use            
        with the IBM Educational Software API (Application                      
        Programming Interface).                                                 
                                                                                
        The Y cable 3.5 mm stereo jack plugs into the Speaker/Headphone        
        Out.  It provides the Right Audio on the 1/4-inch monaural              
        plug that is either red or labeled "R", and the Left Audio on           
        the 1/4-inch plug that is either yellow or labeled "L".                 
                                                                                
   TELEPHONE LINE                                                               
   ===============                                                              
                                                                                
    Unfortunately, the M-Audio Playback Adapter (FC 6301) does not              
    have the ability to attach to a telephone line and does not                 
    support any telephone interface..  Therefore, you cannot connect            
    this adapter to a telephone line.                                           
                                                                                
    Note:  It appears that there may have been some confusion between           
           this adapter and the Windsurfer MCA card.  The Windsurfer            
           MCA card has the capability.  Unfortunately,                        
           this card is currently only supported on the PS/2.  There            
           is not a device driver for the Windsurfer MCA card on the            
           RISC System/6000.                                                    
                                                                                
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This item was created from library item Q664230      5WMMT                      
                                                                                
Additional search words:                                                        
ADAPTER AUDIO CAPTURE CONNECT CONNECTOR HARDWARE IX JUN94 OUTSIDE               
OZNEW OZNOTPID PLAYBACK RISCSYSTEM RISCSYSU SYS SYSTEM UNIT WORLD               
5WMMT                                                                           
                                                                                
                                                                               


WWQA: ITEM: RTA000044631 ITEM: RTA000044631
Dated: 10/1996 Category: RISCSYSU
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