[转帖]光缆测试标准 1...

 

光缆测试标准

根据以下数据,任何链路应用大于3个DB的均为合格 

General Fiber Optic

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	dB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 mm	4.5	2.2							1000		1.4719
Multimode 50 m m	4.5	2.2							1000		1.4725

  TIA568A Fiber Optic

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	DB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 m m					3.75	1.5	0.75	0.3	2000		1.4719
Multimode 50 m m					3.75	1.5	0.75	0.3	2000		1.4725
Singlemode

ISO 11801 Fiber Optic

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	dB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 m m					3.5	1.0	0.75	0.3	2000		1.4719
Multimode 50 m m					3.5	1.0	0.75	0.3	2000		1.4725
Singlemode

  EN 50173 Fiber Optic

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	dB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 m m					3.5	1.0	0.75	0.3	2000		1.4719
Multimode 50 m m					3.5	1.0	0.75	0.3	2000		1.4725
Singlemode

FDDI

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	dB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 m m		11.0							2000		1.4719
Multimode 50 m m		11.0							2000		1.4725

  10BASE-FL

	850 nm Fixed Loss	1300 nm Fixed Loss	1310 nm Fixed Loss	1550 nm Fixed Loss	850 nm Loss/km (in dB)	1300 nm Loss/km (in dB)	Adapter Loss (in dB)	Splice Loss (in dB)	Length	Propagation Delay	Index of Refraction
	dB	dB	dB	dB	dB	dB	dB	dB	meters	ns
Cable Type
Multimode 62.5 m m	12.5								2000		1.4719
Multimode 50 m m	12.5								2000		1.4725
Singlemode