supply of supply, installation, testing and commissioning of over head line inspection. , supply, installation, testing and commissioning of over head line inspection with video recor ding using global positioning system for current collection test (oliver-g) as per rdso specification no is/r dso ti/0001:2023 or its latest version including gps data mapping instrument. the hardware configuration prescribed for laptop and other electronic equipments in the above referred rdso specification is minimum requirement and higher configurations / specifications is also acceptable if it improves the over all performa nce of the system.also additional power bank for increasing backup till 8 hrs. the complete system should be installed, commissioned & tested different trd depots of dhn division. make/brand :- crystal or similar. [ warranty period: 30 months after the date of delivery ] ]