ZeeVee HDb2840 4 Channel HDMI Over Coax QAM Encoder Modulator

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  • ZeeVee HDb2840 4 Channel HDMI Over Coax QAM Encoder Modulator
  • ZeeVee HDb2840 4 Channel HDMI Over Coax QAM Encoder Modulator
MSRP: $4,695.00
— You save $235.00


Important Notice: The HDMI input on ZeeVee products is designed to accept unencrypted video, typically from a digital signage player, video camera, or other self-generated content. Our HDMI input may not work with Apple products (such as Macs), Blu-ray players, satellite boxes, or cable boxes, as they are typically encrypted.

The HDb2840 is a 4-channel HD modulator with unencrypted HDMI inputs for our best video quality yet! PLUS you get a bonus 5th Channel! Save an MPEG-2 video file to the internal memory and use it as an additional signage channel!

Ideal Uses:

  • Distribute HD video throughout your facility
  • Centralize and reduce the number of signage players
  • Commercial or residential
  • Use existing coaxial cabling
  • Compatible with any HDTV 


  • Use Existing Coax Cabling
  • Compatible with any HDTV
  • MPEG2 Video and AC3 Audio Encoding
  • DVB-T and DVB-C Output
  • QAM or DVB-T/C modulator (varies by region)
  • Unencrypted HDMI video inputs for up to 4 channels
  • Maestro multibox management software - local or remote configuration and management
  • Color LCD for front-panel configuration and at-a-glance monitoring and status
  • Ethernet port - for configuration and remote management
  • Analog and Digital Audio - internally encoded and broadcast as Mpeg-1 Layer 2
  • Integrated Closed Caption support - required for ADA compliance in many applications.
  • Delay Matched Audio on Port 1 for use with Audio Systems
  • Coming Soon! 400MB internal memory for an additional signage channel using an MPEG-2 program stream fileComing Soon! Emergency Alert System Capability
  • 5 year warranty
  • Designed and built in the U.S.A.


Video Input
HDMI Video HDMI Video (4 ports per model)
Closed Caption EIA/CEA-608 captions accepted over composite video input (-NA versions only)
Internal Memory MPEG-2 Program Stream file, up to 400MB
Audio Input
Analog Audio Input 75 Ohm 0 to 0.7v at Line-level output.  Stereo input on industry standard 3.5mm pigtail connector
Digital Audio Digital as element of HDMI 1.3 port
Encoding Internally encoded into Dolby® Digital AC-3 or MPEG1 Layer 2 (varies by region)
Video Encoder
Encoder Video Profile MPEG2 HD Profile 2: ISO13818-2 MP@HL
Traffic Shaping Variable Bit Rate
Video Transport Bit Rate 31.67 Mbps
Video Encoding Data Rates Variable, 10 Mbs - 24 Mbs per channel
Average Encoding Data Rate 18 Mbs per channel
Encoding Latency Programmable 100 msec to 400 msec
Color Profile 4:2:0
GOP Size 24
Video, Audio PID Programmable
Program Information Programmable
Audio Encoder
Encoder Audio Profile ATSC A/52, Dolby(r) Digital (AC-3) or Mpeg 2 layer 1 (varies by region)
Modulation Types QAM 256 (ITU-T J83 Annex B) Interleaving modes: (64,2) only OR DVB-C, QAM 256 (ITU-T J83 Annex A) (varies by region)
Cable Standard HRC, IRC or STD or User defined (varies by region)
Frequency Range Frequency Agile from 54 to 864MHz
  • 2 kHz resolution
  • +/- 30 ppm accuracy
  • +/- 35 ppm stability
Output Power +45 dBmV typical
Output Level Adjust 25 - 45 dBmV in 1dBmV steps
MER >38 dB typical
I/Q Amplitude Imbalance < 1% typical
Spectral Tilt <= 1dB over 6MHz typical
Network interface 10/100 mb Ethernet via RJ45 connection
IP address via DHCP or set by user
HTML/Javascript served web interface for easy configuration
Telnet connection for CLI scripting
Easy firmware updates
All settings saved in NV storage
Front Panel Color Display Quickly obtain status at a glance
Power 100-240VAC 50/60Hz, 60W max.  30W Typical. IEC 60320-C14
Cooling Dual Internal cooling fans, Front Inlet, Rear Exhaust
Enclosure Type Metal
Enclosure Dimensions 1.72" H x 17.33" W (without rack mount ears) x 9.9" D
43.6mm H x 440.2mm W x 251.5mm D
System Weight 6.25lb  (2.84 kg)
Carton Dimensions (individual) 4.25" H 30.875" W 12.125" D
108 mm H 785 mm W 308 mm D
Shipping Weight 7.88 lbs (3.58 kg)
Temperature/Humidity Operating +32F to +113F (0C to +45C) / 10% to 80%, non-condensing
Vibration NSTA 1A in carton
MTBF 45,000 hours
Compliance FCC Class A, IEC60065, EN61000 (see manual for specifics), CE, RoHS, RCM C-Tick
Part number HDb2840-NA, HDb2840-EU
Model name HDb2840
Warranty 5 years



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Warranty Information

ZeeVee Warranties the HDb2840 4 Channel HDMI Over Coax QAM Encoder Modulator for 5 Years
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