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NV-ER1808i NVT TBus 8-Port Ethernet Receiver

SKU: NV-ER1808i
  • Transmit 10/100 BaseT Full Duplex Ethernet up to 8,000ft over RG-59/U, 2,000ft over 2-wire/UTP or 1,300ft over Shielded Twisted Pair
  • The TBus architecture allows multipoint operation in any star or daisy-chained topology, with any combination of wire types, and up to 64 remote transmitters/IP cameras
  • Transparently supports all networking protocols (UDP, TCP/IP, HTTP, Multicast etc.) using advanced 128-bit AES encryption
  • Dual 10/100/1000 uplink ethernet connectivity
  • Easy configuration, no PC required
  • 56 VDC is distributed over the TBus to all connected equipment. PoE, PoE+, or High Power PoE cameras (or other PoE devices), up to 50 watts are supported.
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MSRP Price: $2,148.00
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Product Details

The NVT Model NV-ER1808i TBus Ethernet over Coax/UTP Receiver Hub is a 1U 19” rack mountable bus-architected media switch that has 8 TBus ports, capable of supporting up to 64 TBus transmitters and their subsequent 10/100 BaseT Ethernet and PoE+ powered devices.
The TBus transmission medium can be coax, 2-wire/UTP, or Shielded Twisted-Pair. Data rates up to 200 Mbps are achievable, making this device the ideal choice in new or legacy installations where existing cable is re-deployed as part of an upgrade to IP cameras. An internal 250 watt 56 VDC power supply can be optionally augmented by an external 250 watt auxiliary power supply, supporting redundancy and/or higher power applications.
The NV-ER1808i is backed by NVT’s award winning customer support, limited lifetime warranty, and advance replacement.
No IP or MAC addressing configuration is required, yet is available for browser-based monitoring and control. This provides exceptional yet simple configuration and diagnostics for the installer or remote monitoring facility.
Status LEDs indicate power, auxiliary power, and link connectivity/activity.


TBus Building Wiring Interface

  • Number of Ports - Eight TBus Interfaces Supports multiple remote TBus Transmitters including the NV-ET1801 and the NV-ET1804
  • Data Rate - Up to 200Mbps combined network speed
  • Impedance - 25 to 100 Ω
  • Distance - See pages 4 and 5
  • Transmission technology - IEEE 1901, 128-bit AES encryption

Uplink Interfaces

  • Connectivity - RJ45 10/100/1000 BaseT, Auto-crossover SFP Slot for optional second gigabit port

Led Status Indicators

  • Power - Blue “Power On” Flashes when joining
  • BNC/ 2-Wire Interface - Green “Link” Green/Amber “Quality”
  • RJ45 Interface - Green “Link” Blinks with Data


  • Dimensions exclude brackets and connectors
  • Dimensions
    • 17 in wide x 1.7 in high x 10.5 in deep
    • 43 cm wide x 4.5 cm high x 26.7 cm deep
  • Weight - 7.78 lbs (3,52 Kg)


  • Operating temperature
    • -22°F to 122°F (-30°C to +50°C)
    • 20 to 85% RH non-condensing
  • Storage temperature
    • -40°F to 185°F (-40°C to +85°C)
    • 0 to 95% RH non-condensing
  • Transient Immunity - 5x20μS 3000A, 6000V ESD 20KV, 200pF

Power Supply

  • Power is provided from an internal 250 Watt power supply, which can be optionally augmented by an external 250 watt auxilliary power supply. This architecture supports redundancy and/or higher power applications.
  • IEC 380 power inlet - 115/230VAC 50/60 Hz 1 amp 250 watts 425 BTU / hour
  • Protection - 5x20mm type T fuse 2 amps 250V
  • Total system consumption
    • + total consumption of PDs (IP cameras)
    • = total consumption of remote transceivers
    • + total power dissipated in the wire
    • + consumption of the NV-ER-1808i=13W.


  • Mounting - Rackmount “L” brackets for front, rear, or wall installations
  • Power cord - Molded IEC power inlet cord 7 ft (200 cm)

NV-ER1808i Specifications PDF

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