On chip in Circuit Emulator (ICE) module is most important for debugging and emulating actual DSP systems. It is very effective to accelerate the process of DSP systems development.

This instrument integrates signal generation function and signal recording function on a DAQ card, in particular replaces the circuit system with a transfer function emulator.

In this paper, a design method of the IEC (hx-circuit emulator) of the system is presented, and the hardware and software structure and working principle are described.