The 21-219 is an electro optical multiplexer between one G.703/704 E1 and two IEEE C37.94 optical ports. The two IEEE ports are fully mapped into the G.704 standard frame structure of the E1 port, allowing for further SDH/PDH multiplexing and de-multiplexing. 21-219 derives it synchronization from the network port (E1) or from an internal 2048Kbps PDH compliant clock enabling it to be used in leased line applications using electrical E1 modems such as SHDSL and alike.
The 21-219 Fiber optic IEEE C37.94 – G.703 multiplexer from Fibersystem is intended for interfacing substation teleprotection equipment with IEEE C37.94 interfaces to telecom multiplexers using G.703 E1 interfaces.
The two independent IEEE C37.94 ports can be used for redundancy in the network or as a cross redundancy in dual installations. The 21-219 Fiber optic IEEE C37.94 – G.703 multiplexer can also be used in combination with the 21-216 Fiber opitc IEEE C37.94 – G.703 64Kbps Codirectional Converter, for instance when the Teleprotection equipment lack IEEE C37.94 ports or when the intermediate SDH/PDH network offers a mixture of E1 G.703/704 ports and 64Kbps G.703 ports on different sites
| Fiber optic link | |
| Data speed | 2048kbps |
| Protocol | IEEE C37.94 |
| Fiber | Multimode 50/125um or 62.5/125um, ST-connector |
| Optical system budget | 13dB in 62.6um; 9dB in 50/125um |
| Typical distance | 0-2km (3dB system margin for 50/125um and 6dB for 62.5/125um) |
| Galvanic | |
| Data speed | 2048kbps |
| Protocol | G.703 E1 |
| Connector | 2xBNC, Coaxial cable |
| Power Supply | |
| DC | 48 VDC to 250VDC, ±20% |
| AC | 230VAC ± 20%, 50-60Hz |
| AC-connector | IEC320, 3 pins |
| Environmental | |
| Operating temperature range | -25°C to +55 °C |
| Storage temperature range | -40°C to +85 °C |
| Relative humidity operating | 5-95% |
| Relative humidity storage | 5-95% non condensing |
