The 429EX provides avionics technicians and line maintenance personnel with an easy method for troubleshooting ARINC 429 labels. It has the capability to selectively trap labels three different ways. The 429EX has a non-volatile memory and features user-selectable ARINC Air Transport
Equipment Identifier Codes. Transmitted and received data can be viewed in either hexadecimal or easy-to-understand engineering format.