coherent optical communication test setup , coherent optical communication test setup consisting of complex modulation signal generator with 256gs/s on two channelswith comprehensive warranty for 3 year , complex modulation signal generator with 256gs/s on four channels with comprehensive warranty for 3 year , optical multi-format transmitter with comprehensive warranty for 3 year , optical modulation analyzer system (80 ghz) with comprehensive warranty for 3 year , optical modulation analyzer system (110 ghz) with comprehensive warranty for 3 year , optical receiver specifications , internal local oscillator (lo) and lo output with comprehensive warranty for 3 years , equivalent-time oscilloscopewith comprehensive warranty for 3 years , vector network analyzer with comprehensive warranty for 3 years , signal analyzer with comprehensive warranty for 3 years , analog signal generator with comprehensive warranty for 3 years , amc for all items should be quoted as optional after expiry of comprehensive warranty period and should be for 5 years including calibration.