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KINGSINE KF900 Optical Digital Relay Test System- With four fiber Ethernet interfaces and 3-way FT3 dedicated output interface- In accordance with IEC61850-9-1 or IEC61850-9-2 frame format and send samples FT3 frame format or publish / subscribe GOOSE messages,- The output sample value or GOOSE can be freely defined,- Has 12 channels of analog output of weak signal, to achieve a variety of protection relay, monitoring and control devices, intelligent operation box testing.Function FeaturesProvide fully test solutions to various IEC61850 relay protective devices & automation devices for all power users. Provide 4 pairs of 100Base-FX optical interface, 3(FT3)ST optical out, support EC61850-9-1, EC61850-9-2, EC6004-7/8(FT3)and Goose optical digital message output testConventional analog binary input procession is compatible, providing 8 pairs analog binary input & 4 pairs binary outputProvide 1 RG-B/PPS interface, can access RG-B or PPS time signal which synchronize with GPS synchronous clock.