
MATRIX 400™ REFERENCE MANUAL 
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4.8  USER INTERFACE - HOST The following table contains the pinout for standard RS232 PC Host interface. For other user 
interface types please refer to their own manual. 
RS232  PC-side connections 
 1  5 
9 6   
9-pin male connector 
 13 
25 14
1
25-pin male connector 
Pin Name Pin Name 
2 RX 3 RX 
3 TX 2 TX 
5 GND 7 GND 
7 RTS 4 RTS 
8 CTS 5 CTS