Siemens SCALANCE X-300 Series

8.10.3 Cable lengths
Table 8-116 Permitted cable lengths (fiber-optic) Fast Ethernet
Device:
transceiver
(Variant) Fiber FO cable lengths
SFP991-1 (1 x 100 Mbps, LC port opti‐
cal, multimode glass, up to
max. 3 km)
50/125 µm multi‐
mode fiber
0-3 km
(1 dB/km at 1300 nm;
1200 MHz*km;
maximum insertion loss 0.5 dB;
9 dB max. permitted FO cable attenuation at 3 dB link
power margin)
SFP991-1LD (1 x 100 Mbps, LC port opti‐
cal, single mode glass, up to
max. 26 km)
9/125 µm single
mode fiber
0-26 km
(0.5 dB/km at 1310 nm;
maximum insertion loss 0.5 dB;
14 dB max. permitted FO cable attenuation at 2 dB
link power margin)
SFP991-1LH+ (1 x 100 Mbps, LC port opti‐
cal, single mode glass, up to
max. 70km)
9/125 µm single
mode fiber
*) -70 km
(0.28 dB/km at 1550 nm;
maximum insertion loss 0.5 dB,
26 dB max. permitted FO cable attenuation at 2 dB
link power margin,
*) minimum cable attenuation 3 dB)
Table 8-117 Permitted cable lengths (fiber-optic) gigabit
Device:
transceiver
(Variant) Fiber FO cable lengths
SFP992-1 (1 x 1000 Mbps, LC port opti‐
cal, multimode glass, up to
max. 750m)
62.5/125 µm multi‐
mode fiber
0-350 m
(3.1 dB/km at 850 nm;
1200 MHz*km;
maximum insertion loss 0.5 dB;
4.5 dB max. permitted FO cable attenuation at 3 dB
link power margin)
50/125 µm multi‐
mode fiber
0-750 m
(2.5 dB/km at 850 nm;
1200 MHz*km;
maximum insertion loss 0.5 dB;
4.5 dB max. permitted FO cable attenuation at 3 dB
link power margin)
SFP992-1+ (1x 1000 Mbps, LC port opti‐
cal, multimode glass, up to
max. 2 km)
62.5/125 µm multi‐
mode fiber
0-1 km
50/125 µm multi‐
mode fiber
0-2 km
SFP992-1LD (1 x 1000 Mbps, LC port opti‐
cal, single mode glass, up to
max. 10km)
9/125 µm single
mode fiber
0 -10 km
(0.5 dB/km at 1310 nm;
maximum insertion loss 0.5 dB;
6 dB max. permitted FO cable attenuation at 3 dB link
power margin)
SFP992-1LH (1 x 1000 Mbps, LC port opti‐
cal, single mode glass, up to
max. 40km)
9/125 µm single
mode fiber
*) -40 km
(0.4 dB/km at 1550 nm;
maximum insertion loss 0.5 dB,
18 dB max. permitted FO cable attenuation at 2 dB
link power margin,
*) minimum cable attenuation 3 dB)
Technical specifications
8.10 SFP technical specifications
SCALANCE X-300
216 Operating Instructions, 11/2019, A5E01113043-24