fibersystem ab 优势型号： 21-1601 21-1601s 21-1651 21-170 21-180 21-216 21-219 21-225 21-226 21-203 21-203m/r 21-203 l/r 21-223 21-223m/r 21-223l/r 21-224 23-450 23-451 23-453 23-455 23-456 20-101 20-102 94-101 94-102 94-103 94-104 fiberoptic g.703 to x.21 21-1601 fibersystem fo modem g703/x.21/230v 21-1601s fibersystem fo modem g703/x.21/rs530 230v 21-1651 fibersystem fo modem g.703/x.21 110v fiberoptic g.703 e1 to fibersystem proprietary protocol 21-170 fibersystem fo modem g.703 e1 2048kbps fiberoptic g.703 64kbps codir to fibersystem proprietary protocol 21-180 fibersystem fo modem g.703 64kbps fiberoptic g.703 codir to c37.94 21-216 fibersystem fo modem g.703 codir-ieee c37.94 fiberoptic ieee c37.94 to g.703 e1 multiplexer 21-219 fibersystem fo modem ieee c37.94 to g.703 e1 multiplexer fiberoptic ieee c37.94 over ethernet synce 21-225 fibersystem fo ieee c37.94 over synchronous ethernet fiberoptic g703.6 over ethernet synce 21-226 fibersystem fo ieee g703 over synchronous ethernet fiberoptic multimode to singlemode converter 80-250km 21-203 fibersystem fo mm to sm 30db 80km up to 120km 21-203 m/r fibersystem fo medium range mm to sm 46 db 120km up to 140km 21-203 l/rfibersystem fo long range mm to sm 50 db up to 250km fiberoptic singlemode to singlemode booster 80-250km 21-223 fibersystem fo booster sm/sm 4b/5b sc-lc 30 db 80km up to 120km 21-223 m/r fibersystem fo medium range booster sm/sm 4b/5b sc-lc 46 db 120km up to 140km 21-223 l/r fibersystem fo long range booster sm/sm 4b/5b sc-lc 50 db up to 250 km fiberoptic ieee c37.94 delay unit 21-224 fibersystem fo ieee c37.34 delay unit fiberoptic transfer trip link 2-250km 23-450 fibersystem fo transfer trip link mm bi:110v. 10db up to 2km 23-451 fibersystem fo transfer trip link mm bi:220v. 10db up to 2km 23-452 fibersystem fo transfer trip link sm bi:220v. 31db typical 80km up to 120km 23-453 fibersystem fo transfer trip link sm bi:110v. 31db typical 80km up to 120km 23-455 fibersystem fo transfer trip link sfp bi: 220v 50db up to 250km 23-456 fibersystem fo transfer trip link sfp bi: 110v 50db up to 250km fiberoptic transceivers for rs232 - v24 - v28 20-101 fibersystem hfbr to female d-sub ,rs-232/1 20-102 fibersystem hfbr to male d-sub ,rs-232/1 fiberoptic switch (photon switch) 94-101 fibersystem fiberswitch 2x4 mm, lc 94-102 fibersystem fiberswitch 4x8 mm, st 94-103 fibersystem fiberswitch 2x4 mm+2x4 sm, st 94-104 fibersystem fiberswitch 2x8 mm, lc