tender for purchase of c arm machine for spinal surgery - mobile c-arm with flat panel system with true counter balanced carm for fluoroscopic and x-ray operation. a. gantry / c-arm fully counterbalanced c-arm with side-to-side ( wig-wag ) and the horizontal travel movements, and the following features: 1 orbital rotation movement: + / -200deg or more 2 angulation: at least:155 or more 3 horizontal movement: more than 195 mm 4 vertical movement: at least 49cm motorized movement 5 swivel range: ±10 degrees 6 depth of immersion: 73 cm or more 789 free space within the c-arm: at least 76 cm remote control ( touch based ) for control of c-arm functions. touch based panel for control of c-arm functions mounted on c-arm stand itself 10 surgeon should be able to have the control on his side 11 system should have the capability of electromagnetic locking system 12 the carm system should come with uniform reference for the operator and the physician to be used during positioning of b generator & x-ray tube 1 generator should be microprocessor-controlled converter & type with output of at least 4 kw or more. 2 modes: continuous, digital pulse fluoroscopy and digital radiography. 3 fluoroscopy: 40-110 kv; minimum7.2 ma @ 110 kv 4 digital exposures with minimum tube current of 19 ma @ 110 kv 5 x-ray tube should be monoblock with active oil circulation 6 the system should operate in full capacity on 220 volts ac, 15amp. 7 generator should provide digital pulse fluoroscopy with pulse rates of at least 15 frames / second. the system should offer a filtration of 5.5 mm which should include copper filtration for pediatric cases 8 9 focal spot size should be 0.6 mm &1.2 mm dual focal spots.