Juniper Networks M20 manual Optical Interface Support for Gigabit Ethernet PICs with SFP

M20 Internet Router PIC Guide

LEDs	Status LED, one bicolor:
	■ Off—PIC is not enabled
	■	Green—PIC is operating normally
	■	Red—PIC has an error or failure

Port LEDs, one pair per port:

■Link—If green, the port is online; if there is no light, the port is down

■Activity—If flashing green, the port is receiving data; if there is no light, the port might be on, but is not receiving data

Table 12: Optical Interface Support for Gigabit Ethernet PICs with SFP

Parameter	1000Base-SX	1000Base-LX	1000Base-LH
Optical interface	Multimode	Single-mode	Single-mode
Transceiver type	SFP	SFP	SFP
Maximum distance	62.5/125 MMF cable:	9/125 SMF cable:	9/125 SMF cable:
	656 ft/200 m	6.2 miles/10 km	43.5 miles/70 km
	50/125 MMF cable:	62.5/125 and 50/125
	1640 ft/500 m	MMF cable:
		1804.5 ft/550 m
Transmitter wavelength	770 through 860 nm	1270 through 1355 nm	1355 through 1580 nm
Average launch power	–9.5 through 0 dBm	–11.5 through –3 dBm	–3 through +3 dBm
Average receive power	–17 through 0 dBm	–19 through –3 dBm	–23 through 1580 dBm
Receiver saturation	0 dBm	–3 dBm	–3 dBm
Receiver sensitivity	–17 dBm	–19 dBm	–23 dBm

50■ Gigabit Ethernet PIC with SFP