supply of supply, installation and commissioning of an additional hardwaresupply, installation and commissioning of an additional hardware,supply, installation and commissioning of an additional hardware (controller cum memory unit) with usb port and necessary software for integration of usb and recording memory in micas and cdac vcu locos fitted with arc make driver display unit (arc / ddu / v2.0, arc / ddu / v2.1 & arc/ddu/v2.2) for recording of 43 nos of critical data recordi ng parameters of 3-phase locomotives at a sampling rate of 1 second as per clw/crj letter no. c-d&d/t/39, vol-i dt:-06.12.2023 & rdso mom issued vide lr.no:el/3.1.35/17 dtd.28/04/23. [ wa rranty period: 30 months after the date of delivery ] ]