FORAX-DAS
FORAX-DAS (“distributed antenna system”) connects multiple repeaters or base stations to distant distributed antenna systems (DAS). FORAX-DAS offers a high performance alternative to conventional systems using bi-directional amplifiers, affording great flexibility in antenna location plus opto-isolation for all the user’s radios. Multiple DAS can be located up to 10 km from the repeaters/base station.
A FORAX-DAS RF-over-fibre system can connect up to 12 radios to as many as 12 DAS. Each radio is connected to each DAS using up to three Quad-Radio Interface Modules (Q-RIM), up to six dual-channel Optical Interface Modules (OIM), and up to 12 Antenna Interface Modules (AIM). At the radio site, Q-RIMs are mounted in a 19-inch rack mount chassis and connected by short coaxial cables to each radio’s antenna port. The OIMs are also supplied in a 19-in rack mount chassis. At the antenna site, AIMs are supplied in form factors including 19-inch rack mount chassis, wall or ceiling mounted enclosures, or NEMA enclosures, connected to each DAS with coaxial cable(s).
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| Radio Interface Unit (RIU) | Antenna Interface Unit (AIU) | |
| Half Duplex RX/TX Switching Time Option: Full Duplex or Simplex Link |
Supports all public safety trunking and tactical radio systems | Supports all public safety trunking and tactical radio systems |
| Optical Loss Budget | < 5 dB (Higher optical loss budgets available) | < 5 dB (Higher optical loss budgets available) |
| Nominal Input Power | + 27 dBm (other values available) | |
| Input P1 dB | + 38 dBm (other values available) | |
| Input 2 Tone IP3 | + 48 dBm (other values available) | |
| AIM TX Power into DAS | Varies with application | |
| Minimal Signal (50 dB C/No @ Radio) | – 80 dBm typical | |
| Receive Input P1 dB | + 7 dBm | |
| Receive Input 2 Tone IP3 | + 17 dBm | |
| Minimum Antenna Return Loss | 15 dB | |
| User Interface | Monitor LEDs:
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Monitor LEDs:
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| Packaging Option: Weather-tight enclosures with tactical fibre optic cables for field use in all environments |
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19-in Rack-mount, wall/pole/pad-mount, or NEMA enclosures available |
| Installation Notes | User’s facility supplies AC power and fibre optic (FO) connection from OIC to AIU | User’s facility supplies AC power and fibre optic (FO) connection from RIU to AIU |
| Fibre Optic Connector Type | SC/APC (other types available) | SC/APC (other types available) |
| RF Connector Type | N-type female (other types available) for radio and antenna links | N-type female (other types available) for radio and antenna links |
| Power | Universal AC: 90-250 VAC, 50-400 Hz, single phase; UPS option | Universal AC: 90-250 VAC, 50-400 Hz, single phase; UPS option |
| Operating Temperature | – 10°C to + 60°C | – 10°C to + 60°C |
| Storage Temperature | – 40°C to + 80°C | – 40°C to + 80°C |