Contemporary Research QMOD-HDMI1.5 HDTV Modulator

Contemporary Research QMOD-HDMI1.5 HDTV Modulator

Contemporary Research QMOD-HDMI1.5 HDTV Modulator

B&H # COQMODHDMI15 MFR # 5093-001
Contemporary Research QMOD-HDMI1.5 HDTV Modulator

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  • 1Description
The QMOD-HDMI1.5 HDTV Modulator from Contemporary Research creates a 720p/1080i MPEG-2 stream for broadcasting applications. It accepts stereo, PCM, or pass-through AC-3 audio, and can create two MTS sub-channels for each input, supporting two languages each. Users can upgrade operation for digital signage scaling and dual-channel operation by entering optional upgrade key codes.

This modulator distributes channel over an on-site broadband cable system with adjustable output level to 29dBmV, compatible with all cable format broadband systems. It features up to 270 HD programs, 135 channels per system and delivers a fully active QAM 64/256 digital cable channel. It includes a compact switching power supply PS12 1.5 that easily fits in the plug space on a power strip.


Creates a 720p/1080i MPEG-2 stream for broadcast
Accepts stereo, PCM, or pass-through AC-3 audio, can create two MTS sub-channels for each input, supporting two languages each
Includes captioning from Line 21 data on composite video inputs
Flex encoding downscales 1080p to 1080i, allows use of 720p/1080p 60Hz sources, and compensates for 60/30 Hz sources such as consumer HD cameras
QHDMI-Scale upgrade key adds scaling for many VGA resolutions, overscan compensation, and positioning
2-channel upgrade allows selection of inputs to create 2 HD channels


Up to 270 HD programs, 135 channels per system
Delivers a fully active QAM 64/256 digital cable channel 2-135
Streams IPTV from GigE Ethernet port
Distributes channel over an on-site broadband cable system with adjustable output level to 29dBmV, compatible with all cable format broadband systems


One HDMI (non-HDCP) input, up to 1080p video and audio
One RGBHV/Component input, up to 1080p video
Two composite video inputs for encoding, captioning, or EAS use
Two sets of stereo and SPDIF coax audio inputs


Sets up with front-panel buttons and easy to use menus, including inputs, encoding, channel, and RF options
Onboard web page for setup and monitoring
Control with IP Telnet commands
Fan cooled, with adjustable speed
Saves power and rack space using efficient design
Includes compact switching power supply
Meets RoHS safety and California energy standards
In the Box
Contemporary Research QMOD-HDMI1.5 HDTV Modulator
  • PS12-1.5 Switching Power Supply
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
    Modulation Switchable 64/256 QAM, J83 Annex B, Interleaving Modes (128,1)
    MER 38 dB typical
    Front Panel
    Set-Up Select and directional buttons for setup menu LCD, 2 lines of 20 white characters each
    Back Panel
    Power 2.1 mm coaxial jack (inside center conductor positive)
    1.1 A maximum, 11.5 to 13.5 VDC, 12 VDC typical
    EAS Looped Output 3-pin screw terminal for momentary or latching control
    Ethernet RJ-45 GigE Ethernet connector for IP control, IPTV and internal Web page
    Video Inputs HDMI: (non-HDCP), up to 1080p
    HD15 RGBHV/Component: Input up to 1080p, 59.94/60/50, 29.97/30/25 Hz, component on pins 1 to 3
    Composite Video: RCA female (480i), 29.97 Hz, also used for Line 21 captioning data
    Audio Inputs 2 x Digital SPDIF Coax RCA, PCM/AC-3 48K sample rate
    2 x 3.5mm stereo analog inputs
    Inputs assignable to follow video inputs
    RF Female, 75Ω impedance
    Active channels 2 to 135 (48 to 860 MHz), standard, HRC, or IRC spacing
    6 MHz bandwidth fits any open channel without interference to adjacent channels
    1 kHz resolution, ±30 ppm accuracy, ±35 ppm stability
    29 dB typical output power, attenuated in 5 steps, approximately 4 dB
    Profile MPEG2: MP at HL for HD, MP at ML for SD
    1080i, 720p, 480p, and 480i resolution
    Up to 2 programs in MPEG2 transport stream for QAM and IPTV
    Video Encoding Bitrate: 10 to 25 Mb/s in half-step settings
    Pass Through AC-3 (pass-through or stereo) or MPEG1, layer 2 audio
    MTS Dual-language capability
    Power Supply 12 VDC, 1.5 A, 110/220 V, 50/60 Hz
    Operating Temperature 32 to 122°F (0 to 50°C)
    Dimensions (W x H x D) 8.5 x 1.7 (1RU) x 6.0" (215.9 x 43.1 (1RU) x 152.4 mm)
    Weight 1.5 lb (0.6 kg)
    Packaging Info
    Package Weight 3.0 lb
    Box Dimensions (LxWxH) 15.1 x 10.4 x 3.2"

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