
40 
SCANNER AND CABLE TERMINATIONS  
The MS2122 scanner interfaces terminate to 10-pin modular jacks located on the bottom of the units.  The serial number label 
indicates the model number of the scanner. 
EAS Auxiliary RS232 In
Pin  Function   Pin  Function 
1 EAS In   1 Signal Ground 
2 EAS Out 
 2  RS232 Receive Input 
    3  RS232 Transmit Output 
DC Power  4  RS232 RTS In 
Pin  Function   5  RS232 CTS Out 
1 12VDC   6-8  No Connect 
2 Ground   9 +5V Out 
3 5.2VDC  10  No Connect 
Figure 39. Connector Layout 
Scanner to Host, IBM 46xx  Scanner to Host, RS232 
Pin  Function   Pin  Function 
1  Signal Ground  1  Signal Ground 
2  Reserved for RS232 Interface  2 RS232 TX 
3  Reserved for RS232 Interface  3 RS232 RX 
4  Reserved for RS232 Interface  4 RS232 RTS 
5  Reserved for RS232 Interface  5 RS232 CTS 
6  Reserved for RS232 Interface  6 RS232 DTR 
7  IBM B-   7  Reserved for IBM 46xx Interface 
8  IBM A+   8  Reserved for IBM 46xx Interface 
9  No Connect  9  No Connect 
10  No Connect 
10  No Connect 
Scanner to Host, OCIA   Scanner to Host, USB (Full Speed) 
Pin  Function  Pin  Function 
1  Signal Ground   1  Signal Ground 
2  OCIA Sdata   2  Reserved for OCIA Interface 
3  OCIA Sdata   3  Reserved for OCIA Interface 
4 OCIA RDATA  4 
Reserved for OCIA Interface 
5 OCIA RDATA Return  5 
Reserved for OCIA Interface 
6  OCIA Clock In   6  Data+ 
7  OCIA Clock Out   7  PC+5VDC 
8  OCIA Clock In Return  8  Data- 
9  No Connect  9  No Connect 
10 Shield Ground 
10 Shield Ground