
 31
SCANNER AND CABLE TERMINATIONS 
The MS9590i and MS9591i scanner interfaces terminate to a 10-pin modular 
jack.  The serial number label indicates the interface enabled when the scanner 
is shipped from the factory. 
MS9590i-14 or MS9591i-14 
RS232 
Pin  Function 
1 Ground 
2  Transmit RS232 Output 
3  Receive RS232 Input 
4  RTS RS232 Output 
5  CTS RS232 Input 
6  DTR RS232 Input 
7 Reserved 
8 DSR TTL Output 
9 +5VDC 
10 Shield Ground 
MS9590i-47 or MS9591i-47 
Keyboard Wedge and Stand-Alone 
Keyboard 
MS9590i-106 or MS9591i-106 
RS485, USB 
Pin  Function  Pin  Function 
1 Ground  1 Ground 
2  Transmit RS232 TTL Output 2  Transmit RS232 TTL Output 
3  Receive RS232 TTL Input  3  Receive RS232 TTL Input 
4  PC Data TTL  4  IBM + 
5  PC Clock TTL  5  IBM - 
6  KB Clock TTL  6  D+ 
7  Reserved  7  PC +5V Detect Input 
8  KB Data TTL  8  D- 
9  PC +5VDC  9  PC +5V Power 
10 Shield Ground 
 10 Shield Ground 
  Applicable for IBM® host applications 
Figure 23.