YIS Inc. EP0104 ユーザーズマニュアル

 
    The diagram above shows the basic setup for the system.  Data unit 1 
and 2 communicate to each other through their RS-232 ports that are 
connected to the transceivers.  Each Data Unit must provide +5V power 
and ground to the transceivers and well and the control and data signals. 
Below is the connector pin out for the transceivers. 
 
                               15 Pin Connector 
  
  Pin 1.............  gnd                        Pin 10.....RXen (receive enable) 
  Pin 2.............  Rx (receive  data)   Pin 12..........TX (transmit data) 
  Pin 5............. +5V                        Pin 14......... Rf signal level 
  Pin 6............  gnd 
  Pin 7............ Txen (transmit enable) 
 
NOTES: 
  1) To Transmit: set Rxen low and let Txen float  
  2) To Receive:  set Txen low and let Rxen float 
  3) TX and RX are TTL level logic, use a level converter to connect to 
       the RS-232 port of a computer.