| Product type designation | MM991-2 (BFOC) |
| Product description | XR-300 media module |
| SCALANCE X accessory; Media module MM991-2; 2x 100 Mbit/s BFOC ports, optical; multimode optical up to max. 5 km |
| Interfaces |
| Number of electrical/optical connections / for network components or terminal equipment / maximum | 2 |
| Number of optical interfaces / for network components or terminal equipment / maximum | 2 |
| Number of 100 Mbit/s ST(BFOC) ports / for multimode / Integrated | 2 |
| Design of the optical interface / for network components or terminal equipment | ST/BFOC |
| Wavelength / of the optical interface | 1310 nm; Multi-mode |
| Connectable optical power relative to 1 mW | |
| of the transmitter output / minimum | -19 dB |
| of the transmitter output / maximum | -14 dB |
| of the receiver input / maximum | -3 dB |
| Optical sensitivity relating to 1 mW / of the receiver input / minimum | -32 dB |
| Damping ratio / of the FOC transmission link / minimum necessary | 0 dB |
| Range / at the optical interface / depending on the optical fiber used | 0 ... 5 km |
| Permitted ambient conditions |
| Ambient temperature | |
| during operation | -40 ... +70 °C |
| during storage | -40 ... +85 °C |
| during transport | -40 ... +85 °C |
| Relative humidity / at 25 °C / without condensation / during operation / maximum | 95 % |
| Protection class IP | IP20 |
| Design, dimensions and weight |
| Design | Media module |
| Width | 60 mm |
| Height | 22 mm |
| Depth | 100 mm |
| Net weight | 0.08 kg |
| Mounting type | latched |
| Installation in media module slot | Yes |
| Standards, specifications, approvals |
| Standard | |
| for FM | FM3611: Class 1, Divison 2, Group A, B, C, D / T4, Class 1, Zone 2, Group IIC, T4 |
| for hazardous zone | EN 60079-0: 2006, EN60079-15: 2005, II 3(2) G Ex nA [op is] IIC T4 DEKRA 11 ATEX 0060 X |
| for safety / from CSA and UL | UL 60950-1, CSA C22.2 No. 60950-1 |
| for hazardous zone / from CSA and UL | UL 1604 and UL 2279-15 (Hazardous Location), CSA C22.2 No. 213-M1987, Class 1 / Division 2 / Group A, B, C, D / T4, Class 1 / Zone 2 / Group IIC / T4 |
| for emitted interference | EN 61000-6-4:2007 (Class A) |
| for interference immunity | EN 61000-6-2:2005 |
| Certificate of suitability | EN 61000-6-2:2005, EN 61000-6-4:2007 |
| CE marking | Yes |
| C-Tick | Yes |
| KC approval | Yes |
| Marine classification association | |
| Bureau Veritas (BV) | Yes |
| MTBF | 140 y |
