Description
The modem 21-1601 and 21-1651 from Fibersystem are combined fiberoptic synchronous and asynchronous modem with four different interfaces.
The interfaces are:
- G.703 unbalanced 2Mbps
- G.703 balanced Nx64Kbps
- X.21
- RS-530, not mounted on products produced after October 2006.
The modems are available in 2 versions.
- 21-1601 runs on 110-230 VAC , +/- 20%, power supply
- 21-1651 runs on 48-250 VDC, +/- 20%, power supply
Technical Data
Fiberoptic and data transfer protocol
- Data speed/protocol: Fibersystem proprietary protocol.
Optical data
- Wavelength: 820nm
- Fiber optical connector: ST
- Optical System budget:
- 13dB with multimode fiber (62.5/125 um)
- 9dB with multimode fiber (50/125 um)
- Typical distance: 2km
- 6dB systemmargin for 62.5/125
- 3dB margin for 50/125
G.703 – 2048kbit/s unbalanced
- Interface: 2 BNCs, unbalanced 75 Ohm.
- Protocol: HDB3, 2048 kbit/s
G.703 – balanced, codirectional
- Interface: 9-pin female D-sub or RJ45
- Protocol: G.703 codir, 64, 128, 192 or 256 kbit/s
G.703 – balanced, contradirectional
- Interface: 9-pin female D-sub or RJ45
- Protocol: G.703 contradir, 64, 128, 192, 256, 384 or 512 kbit/s
X.21
- Interface: 15-pin female D-sub
- Protocol RS-422 compatible signals: 4.8, 9.6, 19.2, 38.4, 64, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048 kbit/s. In asynchronous mode up to 256 kbps/s.
Power Supply
- 48V DC to 250V DC, + 20%
- 110V AC to 230V AC, 50Hz, + 20%.
- AC connector: IEC 320, 3 pin
- Power consumption: <20W.
Physical size
- The unit can be mounted in a 19” rack. By adjusting, the rack mount brackets, the unit can also be mounted on a wall or similar.
- Height: 44 mm
- Width 483 mm (380 mm without rack mount brackets)
- Depth 238 mm (from front to back, connectors excluded)
- Weight: 3 kg
Environmental conditions
- Operating temperature: 0 – 50 C
