Specifications

Technical specifications
8.4 Media module MM491-2LH+ (100Base-FX) - technical specifications
SCALANCE X-400 BA
Operating Instructions, 03/2009, C79000-G8976-C186-07
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8.4 Media module MM491-2LH+ (100Base-FX) - technical specifications
Interfaces
Connection of end devices or network segments
over FOC
2x SC duplex sockets
(100 Mbps, 100BaseFX, full duplex)
Power of the laser diode < 0 dBm
Power consumption 4 W
Permitted cable lengths
FO cable lengths:
• 9/125 µm single mode fiber
0 - 70 km
(0.38 dB/km at 1550 nm;
maximum insertion loss 0.5 dB;
26 dB max. permitted FO cable attenuation at
3 dB link power margin
minimum cable attenuation at 3 dB)
Permitted environmental conditions / EMC
Operating temperature - 40°C through + 70°C
Storage/transport temperature - 40°C through + 80°C
Relative humidity in operation < 95% (no condensation)
Operating altitude Max. 2000 m
RF interference level EN 55081 Class A
Immunity EN 61000-6-2: 2001
Laser protection Class 1 complying with IEC 60825-1
Construction
Dimensions (W x H x D) 35 x 145 x 90 mm
Weight 260 g
Degree of protection IP20