supply of driver display unit (ddu) as per spec. no: clw/es/3/0487 alt.c etc.driver display unit (ddu) as per spec. no: clw/es/3/0487 alt.c etc.,driver display unit (ddu) as per spec. no: clw/es/3/0487 alt.c or latest along with conti nuous recording facility for 43 parameters of c-dac vcu based 3 phase locomotives and incorporating healthiness / isolation of each traction motor, traction converter (4qc or rectifier/inverter) module thr ough gui (graphical user interface) on home screen of ddu. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]