Macintosh Setup

Below are the steps to take in setting up your modem with a Macintosh
computer:

  *  To use your Sportster modem on a Macintosh, set DIP switches 1,
     3, 5, 7 and 8 in the DOWN (ON) position.
  *  If you require auto-answer, leave DIP switch 5 in the UP (OFF)
     position.
  *  There are two cables available for the Macintosh computer.  The
     first is the more common, which is a standard serial cable(see
     document 10579).  The second is called a 'hardware handshaking'
     cable(see document 10580), which provides the CTS/RTS signals
     necessary for hardware flow control.
       
       Cable Troubleshooting
       *  If you find that the modem is failing, it may be due to the 
          use of hardware handshaking with a standard serial cable.  If 
          you make the DIP switch changes as recommended above, and 
          change the initialization string to "AT&F&B1&H2&I2"(for 
          software handshaking), the Modem/Mac combination should work 
          correctly.
       *  If you are not sure which kind of cable you are using, choose 
          the software flow control init string first, and then try the 
          hardware flow control string: "AT&F&B1&H1&R2". If the hardware 
          flow control init string does not work, you do not have a 
          cable that supports hardware flow control.
  
  *  The proper lights at power up are: "CS"(should be on at all
     times), "TR"(because DIP switch 1 forces the DTR signal high), 
     and the "AA" if you have DIP switch 5 UP (OFF). "RD" and "SD" 
     should flicker as you type commands to the modem.
  *  After configuring your modem with the proper settings, put DIP
     switch 7 back in the UP (OFF) position. If the last steps do not 
     work, there could be a problem with either the cable or the 
     modem. Please try the modem with another cable before assuming 
     that the modem is not functioning correctly.