ET Intelligence group: DCX Systems, a manufacturer of electronic sub-assemblies and cable harnesses used in defence and aerospace applications, plans to raise Rs 500 crore through an initial public offering (IPO). Of this, Rs 400 crore is a fresh issue that would be used to retire debt, to expand capacity, and to meet working capital requirements while balance is an offer for sale. After the IPO, the promoter stake will reduce to 73.6% from