2-18 L60 Line Phase Comparison Relay GE Multilin2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION22.2.9 INTER-RELAY COMMUNICATIONSSHIELDED TWISTED-PAIR INTERFACE OPTIONSRS422 distance is based on transmitter powerand does not take into consideration the clocksource provided by the user.LINK POWER BUDGETThese Power Budgets are calculated from themanufacturer’s worst-case transmitter powerand worst case receiver sensitivity.MAXIMUM OPTICAL INPUT POWERTYPICAL LINK DISTANCECompensated difference in transmitting and receiving (channelasymmetry) channel delays using GPS satellite clock: 10 ms2.2.10 ENVIRONMENTALAMBIENT TEMPERATURESOperating: –40 to 60°CStorage: –40 to 80°CThe LCD contrast may be impaired at temperatures lessthan –20°C.OTHERHumidity (non-condensing): IEC 60068-2-30, 95%, Variant 1, 6daysAltitude: Up to 2000 mInstallation Category: IIINTERFACE TYPE TYPICAL DISTANCERS422 1200 mG.703 100 mEMITTER,FIBER TYPETRANSMITPOWERRECEIVEDSENSITIVITYPOWERBUDGET820 nm LED,Multimode–20 dBm –30 dBm 10 dB1300 nm LED,Multimode–21 dBm –30 dBm 9 dB1300 nm ELED,Singlemode–21 dBm –30 dBm 9 dB1300 nm Laser,Singlemode–1 dBm –30 dBm 29 dB1550 nm Laser,Singlemode+5 dBm –30 dBm 35 dBEMITTER, FIBER TYPE MAX. OPTICALINPUT POWER820 nm LED, Multimode –7.6 dBm1300 nm LED, Multimode –11 dBm1300 nm ELED, Singlemode –14 dBm1300 nm Laser, Singlemode –14 dBm1550 nm Laser, Singlemode –14 dBmNOTENOTEEMITTER TYPE FIBER TYPE CONNECTORTYPETYPICALDISTANCE820 nm LED Multimode ST 1.65 km1300 nm LED Multimode ST 3.8 km1300 nm ELED Singlemode ST 11.4 km1300 nm Laser Singlemode ST 64 km1550 nm Laser Singlemode ST 105 kmTypical distances listed are based on the fol-lowing assumptions for system loss. Asactual losses will vary from one installation toanother, the distance covered by your systemmay vary.CONNECTOR LOSSES (TOTAL OF BOTH ENDS)ST connector 2 dBFIBER LOSSES820 nm multimode 3 dB/km1300 nm multimode 1 dB/km1300 nm singlemode 0.35 dB/km1550 nm singlemode 0.25 dB/kmSplice losses: One splice every 2 km,at 0.05 dB loss per splice.SYSTEM MARGIN3 dB additional loss added to calculations to compensate forall other losses.NOTENOTE
