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| Our Coordinates: Lat 42.75 N, Long 71.85 W |
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8GHz System | General Parameters |
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| Operating Frequency Range | 8.275 to 8.5GHz | | Modulation type | QPSK | | Data capacity and channel spacing | | | 2 x 2.048 M b it/s | (2E1) 3.5 MHz | | 4 x 2.048 M b it/s | (4E1) 7 MHz | | 1 x 8.448 Mbit/s | (1E2) 7 MHz | | 8 x 2.048 M b it/s | (8E1) 14 MHz | | 16 x 2.048 Mbit/s | (16E1) 28 MHz | | l x 34.368 Mbit/s | (1E3) 28 MHz | | Applicable Standards | ITU-R 386(3)
CCIR Rec 1055-1 | | Tuning Range | >60 MHz | | Frequency source | Synthesizer | | Forward error Correction (FEC) | Improves Rx performance by up to 4 dB at 10-6 | | System Configuration options | Non-Protected (1+0)
Protected (1+1), hot standby
(Rx hit-less c/o) or twin path
(hit-less clo). | | Channel Selection | From IDU, via NMS or Management Terminal | Most operational selections can be done
via IDU front panel, Management Terminal or NMS | |
| Digital Interfaces |
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| Type | G.703 compliant E1, E2, E3 rates (2.048, 8.448, 34.368 Mbit/s) | | Framing | G.704 (E1), G.742 (4E1/E2), G.751 (4E2/16E1/E3) | | Digital Line Code | HDB3 | | Digital 1/0 connectors options | BNC 75 Ohm, unbalanced 12O Ohm, balanced 25 Pin D-type |
| Transmitter |
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| Power Output | +23dbm | | Frequency Stability | less than l0ppm (0.001%) | | Attenuation Range | 15dB, Mute : s/ware control |
| Receiver | | Receiver Type | Double Conversion | | Background BER | < 10-11 | | Receiver Upper limit | -2OdBm | | Receiver Sensitivity (10-6 BER) and System Gain | SENSITIVITY (dBm) | SYSTEM GAIN (dB) | | 2El | -91.5 | 114.5 | | 4E1/1E2 | -88.5 | 111.5 | | 8E1 | -85.5 | 108.5 | | 16E1/1E3 | -85.5 | 105.5 |
| Management Capability |
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| Loopbacks | Near end Baseband, IDU IF,
ODU RF, Far end Baseband. | | Signal Strength | Analogue test points (ODU),
LCD (IDU) and Remote | | Diagnostics | Local and remote status using LCD, Craft Terminal, or NMS | | Performance Monitoring | G.826 at El and Radio Frame level | | Alarm Inputs/outputs | 4 Isolated Inputs, 6 Relay Outputs | | Network Management | Element, Local (Domain) and Full Network management (opt) available. |
| Power Supply |
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| Standard Input | 21 to 57 VDC, floating earth | | Optional | 110 to 250V AC - external | | Connector | Wieland 8213 Type | | Consumption (per station) | 60W (1+0); 110W (1+1) |
| Environmental |
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| Temperature Range | | | ODU | -30oC to +55oC | | IDU | 0oC to +50oC | | Relative Humidity | | | ODU | All weather Operation | | IDU | < 90%, non-condensing | | Altitude | 70 to 106 kPa | | EMC | EN 55022 (Class B) | | Electrostatic Discharge | EC 801-2 (Level 4) | | Wind speed (ODU) | Operating : 160 km/h
Survival : 200 km/h |
| Standard Service Channels |
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| Number of service channels | 3 | | Voice Frequency channels | One 4-wire plus E&M inter-station voice channel (Bridge), and/or unit to unit Order Wire (Handset) with call facility | | Connector | RJ12 (Bridge) RJ11 (Handset) | | Serial Data Channels | 2 | | Rate | 300-19200 Baud | | Protocol | RS232 (TxD, RxD, CTS, RTS, DTR, DSR, Gnd) | | Connector | 9 Pin D-type, DCE | | Mngment Terminal Interface | 9 Pin D-Type, DTE | | NMS Data Channel | Custom | | NMS User Interface | 10 Base T, RJ45 |
| Mechanical |
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| Dimensions | | | IDU | 19" rack, 2U (482x88x380) | | ODU | Approx 4lOx350xl10mm | | Weights | | | IDU | 9 kg (1+0), 10kg (1+1) | | ODU | 9 kg (excl Antenna) | | Easy clip-on procedure between ODU and Integral Antenna. Antenna alignment not disturbed by removing ODU. | | | |
| Indoor to Outdoor Unit Interface |
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| Type | Single co-axial cable | | Impedance | 50 Ohms | | Connector Type | N | | Recommended cable length | Up to 350m |
| Antennas |
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| Integral Mount Antennas | | | Size: | 0.6m | 1.2m | 1.8m | | Gain (dBi) | 30.8 | 37.1 | 40.3 | | Front/back ratio (dB) | 54 | 62 | 64 | | 3dB Aperture (deg) | 4.6 | 2.2 | 1.4 | | Mass (kg) | 31 | 64 | 173 | | Interface Flange (PBR) | 84 | 84 | 84 |
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Toll Free (888) 224-6814 | Fax (603) 878-0530 | E-mail
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