User Manual    AMETEK Programmable Power 
RS Series    48 
3.6.5  RS232C Serial Interface Connector 
An RS232 serial interface connector is located on the rear panel on all models.  
Pin  Name  Direction 
1  N/C   
2  TxD  Output 
3  RxD  Input 
4  N/C   
5  Common  Common 
6  N/C   
7  CTS  Input 
8  RTS  Output 
9  N/C   
Table 3-9: RS232 Connector pin out – RS with RS232 and USB. 
The RS models RS232 interface use a straight through DB9 male to DB9 female serial cable, 
which is supplied in the RS ship kit for these models.