With the development of large-scale integrated circuit and programmable technique, the degree of integration and programmable ability for timing equipment have been required higher and higher in the test range. As the restriction of space and transportation condition, it puts forward higher requirements for the volume and reliability of timing equipment especially for the vehicle equipment. Combining with the research project of test range timing equipment, a design project of IRIGB code generator is proposed based on FPGA by the CycloneⅣ FPGA chip EP4CE22 as the core and schematic diagram and Verilog language programming. The system has the characters of simple operation, high reliability, smaller volume and strong function expansion, which can widely be applied to measurement and control equipment of test range.