2-30 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUALSPECIFICATIONS CHAPTER 2: PRODUCT DESCRIPTION22.5.9 Inter-relay communicationsSHIELDED TWISTED-PAIR INTERFACE OPTIONSLINK POWER BUDGETMAXIMUM OPTICAL INPUT POWERInterface type Typical distanceRS422 1200 mG.703 100 mNOTERS422 distance is based on transmitter power and does not take into consideration the clock source providedby the user.Emitter, fiber type TransmitpowerReceivedsensitivityPowerbudget820 nm LED, Multimode –20 dBm –30 dBm 10 dB1300 nm LED, Multimode –21 dBm –30 dBm 9 dB1300 nm ELED, Single mode –23 dBm –32 dBm 9 dB1300 nm Laser, Single mode –1 dBm –30 dBm 29 dB1550 nm Laser, Single mode +5 dBm –30 dBm 35 dBNOTEThese power budgets are calculated from the manufacturer’s worst-case transmitter power and worst casereceiver sensitivity.The power budgets for the 1300 nm ELED are calculated from the manufacturer's transmitter power andreceiver sensitivity at ambient temperature. At extreme temperatures these values deviate based oncomponent tolerance. On average, the output power decreases as the temperature is increased by a factor1 dB / 5 °C.Emitter, fiber type Maximum opticalinput power820 nm LED, Multimode –7.6 dBm1300 nm LED, Multimode –11 dBm1300 nm ELED, Single mode –14 dBm1300 nm Laser, Single mode –14 dBm1550 nm Laser, Single mode –14 dBm
