2-14  
 
2.4 Parameter Module 
 
Each parameter module may consist of the module infrared communication board, module 
power board, module button board, parameter board, etc. 
 
 
2.4.1 Module Infrared Communication Board 
 
The module infrared communication board allows a short delay when powering up the 
module and adopts FPGA to enable infrared communications between the module and the 
module rack. An ID is integrated into the module infrared communication board. When a 
module is inserted in the module rack, the ID is automatically sent to the module rack. 
 
 
2.4.2 Module Power Board 
 
Some modules have no power board. There are two kinds of module power board: 
1.  Isolated power board: converts the 12 V DC into a 12 V isolated DC and a 5 V isolated 
DC. 
2.  Non-isolated power board: converts the 12 V DC into a 5 V DC 
 
 
2.4.3 Module Button Board 
 
There are keys and a LED on the module button board.     
 
 
2.4.4 Parameter Board 
The parameter board is a parameter measurement component, which is the most important 
component of the parameter module.