CHAPTER 4: SPECIFICATIONS
Page 4-6
BRIM-F6 User’s Guide
Multimode Fiber:
Core diameter:
62.5
µ
m nominal
Cladding diameter:
128.0
µ
m maximum
122.0
µ
m minimum
Cable attenuation:
≤
2.5 dB/km typical
Single Mode Fiber:
Core diameter:
8.7
µ
m +/- 0.5
µ
m
Cladding diameter:
127.0
µ
m maximum
Cable attenuation:
≤
0.5 dB/km typical
Multimode Fiber Optic Cable Length
The PMD FDDI standard specifies the following:
Maximum total
cable length:
100 km (62 miles) — dual ring
200 km (124 miles) — wrapped
Maximum multimode
cable length between
adjacent nodes:
2 km (1.2 miles)
Single Mode Fiber Optic Cable Length
The SMF-PMD FDDI standard specifies the following:
Maximum total
cable length:
100 km (62 miles) — dual ring
200 km (124 miles) — wrapped
Single mode cable length
between adjacent nodes:
40 km (24 miles) maximum
25 km (15 miles) typical
Twisted Pair Cable Length
The TP-PMD FDDI standard specifies the following:
BRIM-F Book Page 6 Monday, January 29, 1996 9:26 AM
