Siemens SCALANCE X-300 - Page 183

Technical specifications
8.6 MM900 technical specifications
SCALANCE X-300
Operating Instructions, 10/2010, A5E01113043-10
183
Media module Lead Maximum length
62.5/125 µm multimode
fiber
350m
3.1 dB/km at 850 nm;
200 MHz*km;
maximum insertion loss 0.5 dB;
4.5 dB max. permitted FO cable attenuation at 3
dB link power margin
MM992-2
50/125 µm multimode
fiber
750m
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
MM992-2LD 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)
MM992-2LH 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
MM992-2LH+ 9/125 µm single mode
fiber
70km
(0.28 dB/km at 1550 nm,
maximum insertion loss 0.5 dB,
21 dB max. permitted FO cable attenuation at 2
dB link power margin,
minimum cable attenuation 8 dB
MM992-2ELH 9/125 µm single mode
fiber
120km
(0.225 dB/km at 1550 nm,
maximum insertion loss 0.5 dB,
27 dB max. permitted FO cable attenuation at 2
dB link power margin,
minimum cable attenuation 8 dB
Maximum lengths of copper cables / FO cables for the SFP media module
Media module Lead Maximum length
MM992-2SFP Depending on the SFP transceiver used.
Mean time between failure (MTBF)
Media module MTBF
MM992-2CUC > 250 years
MM992-2CU > 250 years
MM992-2SFP Without components > 250 years
MM991-2 > 55 years