Instruction Manual
© Sealevel Systems, Inc.  - 10 - 
ISO-16 User Manual
Sensor Input Ports Pin Assignments (P1) 
Port A Bit  P1  Port B Bit  P1 
0 18,37 0 10,29 
1  17,36  1  9, 28 
2 16,35 2  8,27 
3  15,34  3  7,26 
4  14,33  4  6,25 
5 13,32 5  5,24  
6 12,31 6  4,23  
7 11,30 7  3,22  
Ground 2,20,21     
+ 12 Volts  19     
+ 5 Volts  1     
Pin Assignments 
Port A Bit  P1 
A0 18,37 
A1 17,36  
A2 16,35 
A3 15,34  
A4 14,33  
A5 13,32 
A6 12,31 
A7 11,30 
B0 10,29 
B1 9, 28 
B2 8,27 
B3 7,26  
B4 6,25  
B5 5,24  
B6 4,23  
B7 3,22  
Ground 2,20,21 
+ 12 Volts  19 
+ 5 Volts  1 
Note: For ease in wiring, the card’s DB37 connector can be interfaced directly to the 
Sealevel terminal block kit, Item# KT-101. This kit includes a 6’ Male/Female cable 
(Item# CA112) and terminal block with screw terminals (Item# TB02) which 
provides a simple means to connect field wiring to Sealevel DB37 I/O cards. The 
TB02 provides both male and female DB37 connectors, eliminating the need for 
gender benders and other adapters while simplifying cable connections. 










