Siemens X-400 - Manual (Page 124)

Technical Specifications
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
124 C79000-G8976-C186-03
7.3 Media Module MM491-2LD (100Base-FX)
Interfaces
Connection of end devices or network
segments over FOC 2x2 BFOC sockets
(100 Mbps, 100BaseFX, full duplex)
Power of the laser diode < 2 mW
Power consumption 2 W
Permitted Cable Lengths
FOC lengths 0 - 26 km
(10/125 µm single mode fiber,
0.5 dB/km at 1310 nm; 13 dB max.
permitted FO cable attenuation at 3 dB
link power margin)
Permitted Environmental Conditions
/ EMC
Operating temperature 0°C through + 60°C
Storage/transport temperature - 40°C through + 80°C
Relative humidity in operation < 95% (no condensation)
Operating altitude Max. 2000 m
Noise emission EN 55081 Class A
Noise 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 IP 20