Siemens X-400 User Manual
Technical Specifications
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
C79000-G8976-C186-03
123
7.2
Media Module MM491-2 (100Base-FX)
Interfaces
Connection of end devices or network
segments over FOC
segments over FOC
2x2 BFOC sockets
(100 Mbps, 100BaseFX, full duplex)
(100 Mbps, 100BaseFX, full duplex)
Power consumption
2 W
Permitted Cable Lengths
FOC lengths
0 – 3 km
(50/125 µm multimode fiber; 1 dB/km
at 1310 nm; 1200 MHz*km; 6 dB max.
permitted FO cable attenuation at 3 dB
link power margin)
(50/125 µm multimode fiber; 1 dB/km
at 1310 nm; 1200 MHz*km; 6 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
Construction
Dimensions (W x H x D)
35 x 145 x 90 mm
Weight
260
g
Degree of protection
IP 20