NMX-ENC-N2151-C Encoder Card (discontinued)

JPEG 2000 4K UHD Video over IP Encoder with KVM, Card

Replacement Products

  • NMX-ACC-N9206

    2RU Rack Mount Cage with Power for Six SVSI N-Series Card Units

The NMX-ENC-N2151 4K Encoder and NMX-DEC-N2251 4K Decoder provide users with the industry's most versatile solution for distributing AV over a converged network at resolutions up to 4096×2160. JPEG2000 compression allows Ultra HD media to be switched and distributed over standard Gigabit Ethernet networks. Ultra HD signals from the NMX-ENC-N2151 encoder are provided simultaneously as: 1) a JPEG2000-compressed 200-600 Mbps stream through the RJ45 connector or small-form-pluggable (SFP+) port (10Gb), and 2) an uncompressed stream through the SFP+ connector (via a fiber module). Any source can be sent to any number of displays by routing through layer-3 switches. System scalability is limited only by uplink and stacking connector bandwidths.

Standard features like output scaling (decoder), bi-directional serial, IR output, embedded 7.1 audio, and KVM-over-IP extension are included. The NMX-ENCN2151-C and NMX-DEC-N2251-C form-factors are compatible with the NMX-ACCN9206 card cage for high-density applications.

Common Applications

The NMX-ENC-N2151 and NMX-DEC-N2251 together create the perfect solution for video matrix applications where resolutions up to 4K are required. Common applications include classrooms, conference rooms, performing arts centers, and sports bars.













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SVSI N2x51 Encoder and Decoder Firmware Updater
version 1.5.3f, updated: Jul 20, 2018
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updated: Jul 24, 2020
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version 2020-07-28, updated: Jan 04, 2021
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Data Sheets
    741 KB Jul 17, 2018
Install Guides
    607 KB Mar 29, 2018
Quick Start Guides
    334 KB Mar 28, 2018
Programming Guides
API Command List - SVSI N1000/N2000 Series
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  • Output Scaling — Video scaling at the output (decoder) allows seamless switching from any source, at any resolution, to any display or projector, while preserving video fidelity
  • Infrared (IR) — Infrared emitter connection allows control of low-cost, IR-only display devices
  • Onboard Control — All N-Series encoders and decoders have on-board, built-in control capability via events that can trigger any number of TCP/UDP commands to other IP controllable devices
  • Pass-through HDMI interface (encoder) — allows easy installation with local display such as desktop PC applications
  • Unlimited Scalability — Grow the video matrix by adding encoders or decoders as needed (within the bandwidth limits of the uplink and stacking connectors
  • Stand Alone or Card — Available as a stand-alone device, or card for use with NMX-ACC-N9206.


  • Signal Types
      • Digital Video Input: HDMI, DVI-D*, Dual-Mode DisplayPort (DP++)*
      • Analog Video Input: HD-15 VGA, Component*
      • Video Output: Network video over Ethernet via RJ45 port or via 10G SFP+ port, HDMI, DVI-D*

*Note: these signal types are supported through a passive adapter.

  • Formats
      • HDMI, DVI-D*, Dual-Mode DisplayPort (DP++)*, HDCP content protection support, RGBHV, YPbPr

*Note: these signal types are supported through a passive adapter.

  • Progressive Input Resolutions
    • HDMI and DVI (Progressive)
      • Pixel clock between 54 MHz - 300 MHz
      • Minimum resolution of 1024x768
      • Maximum horizontal resolution of 4096 or a vertical resolution of 2160*
      • Common acceptable resolutions include: 1024x768p60, 1280x720@60Hz - 720p60, 1600x1200@60Hz, 1920x1080@60Hz - 1080p60, 2560x1440@30Hz - QHD30, 3840x2160@30Hz - UHD30 aka 4K30, 3840x2160(4:2:0)@50Hz (JPEG2000 only), 3840x2160(4:2:0)@60Hz (JPEG2000 only), 4096x2160(4:2:2)@30Hz - DCI 4K30, 4096x2160(4:2:0)@60Hz (JPEG2000 only)
  • Interlaced Input Resolutions
      • HDMI and DVI (Interlaced)
        • 1920x1080@50Hz - 1080i50 (JPEG2000 only)
        • 1920x1080@60Hz - 1080i60 (JPEG2000 only)

Note: Interlaced resolutions will be de-interlaced.

  • Analog Input Resolutions
      • VGA
        • Pixel clock between 54 MHz - 165 MHz
        • Minimum resolution of 1024x768
        • Maximum horizontal resolution of 1920 or a vertical resolution of 1200
        • Common acceptable resolutions include: 1024x768@60Hz, 1280x720@50Hz (720p50), 1280x720@60Hz (720p60), 1280x768@60Hz, 1280x800@60Hz, 1280x960@60Hz, 1280x1024@60Hz, 1360x768@60Hz, 1366x768@60Hz, 1400x1050@60Hz, 1440x900@60Hz, 1600x1200@60Hz, 1680x1050@60Hz, 1920x1080@50Hz (1080p50), 1920x1080@60Hz (1080p60), 1920x1200@60Hz (reduced blanking)
      • Component
        • HD up to 1080p60
        • 1920x1080@50Hz - 1080i50 (JPEG2000 only)
        • 1920x1080@60Hz - 1080i60 (JPEG2000 only)
  • Output Resolutions: Matched to inputs*

*Note: Input resolutions supported @60Hz refresh rates are also supported @59.94Hz

*Note: The N2151 Encoder does not accept Composite or S-Video (YC)

  • Color Space
    • 4:2:2 Resolutions up to 4K30
    • 4:2:0 4K60
  • Signal Types
      • Input: Embedded audio on HDMI (DVI-D through adapter) or Analog Stereo (Balanced or Unbalanced)
      • Output: Ethernet, Embedded audio on HDMI or DVI-D (through adapter)*

*HDMI output refers to pass-through video on the HDMI OUT port

  • Formats
    • HDMI: 8ch PCM
    • Analog: Stereo 2-channel
  • Analog-To-Digital Conversion: 16-bit 32 kHz, 44.1 kHz and 48 kHz


  • 25 ms at 60 fps
  • 50 ms at 30 fps



  • 50 ms at 60 fps
  • 100 ms at 30 fps


Note: This is the combined encode plus decode latency. Total latency from source to screen will also include any network latency

Note: Scaling adds one frame of latency (17ms at 60fps)

  • Uncompressed: 4000 Mb/s at 4K30 4:2:2
  • JPEG2000: 200 to 600 Mb/s*
    • Recommend 200-300 Mb/s for motion video
    • Recommend 500-600 Mb/s for computer graphics
  • *Note: Minimum bandwidth is 50 Mb/s for resolutions <= 1080p60
  • Ethernet
    • PO
      • 10/100/1000 Mbps, auto-negotiating, auto-sensing, full/half duplex, DHCP, Auto IP, and Static IP
    • P1
      • 10 Gbps port which accepts compatible fiber transceivers or direct attach cables
  • HDMI: HDCP, EDID management
  • +12V 2A: One 12 Volt DC power input
  • PO
    • 8-wire RJ45
    • 10/100/1000 Mbps 10/100/1000Base-T auto-sensing gigabit Ethernet switch port
    • Provides the network connection and JPEG2000 compressed video
  • P1
    • 10 Gb/s SFP+ port (SFP+ fiber transceiver or direct attach cable not included)
    • Provides the network connection and uncompressed networked AV video
  • IR
    • 2-pin terminal Phoenix connector
    • Provides Infrared (IR) output only (33-60 kHz; typically 39 kHz). Emitter may be necessary (not included)
  • RS232
    • 3-pin terminal Phoenix connector
    • Provides a serial control interface. Full duplex communication. Available terminal speed settings: 9600-115200 baud rate
    • 5-pin terminal Phoenix connector
    • Provides user-selectable balanced/unbalanced input. Dedicated audio input
  • HDMI OUT: HDMI video output (passive pass-through from HDMI IN)
  • HDMI IN: HDMI video input
  • VGA IN: DB15 analog input
  • USB connectors (front panel): USB-B control input and two USB-A control inputs
Controls and Indicators - Front Panel
  • RESET Button
    • Recessed pushbutton
    • Press to initiate a 'warm restart' causing the processor to reset, but not lose power. A reset does NOT affect the current settings
  • ID Button
    • Recessed pushbutton
    • Press to send a notification out on the network to identify the unit (the notification causes a pop-up dialog in N-Able and N-Command)
    • On solid (green) when operating power is supplied (via PoE or local power supply)
    • This activity is also shown by the PWR LED on the rear panel
    • On flashing (green) when there is software activity
    • This activity is also shown by the STAT LED on the rear panel
Controls and Indicators - Rear Panel
  • PWR LED: Same as POWER LED described above
  • HDMI LED: On (green) when there is a connection to a valid video source
  • STAT LED: Same as STATUS LED described above
  • STRM LED: On (green) when the unit is streaming video
  • Regulatory Compliance: FCC, CE, and NTRL
  • Recommended Accessories: NMX-ACC-N9206 (FGN9206), 2RU Rack Mount Cage with Power for Six SVSI N-Series Card Units
FG Numbers FGN2151-CD

NMX-ENC-N2151-C Encoder Card (discontinued)

JPEG 2000 4K UHD Video over IP Encoder with KVM, Card