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Type: RF Modulators
Part Number: 5071-001
Size: 8.500 wide x 1.750 high x 6.000 deep
Weight: 1.500
Distribution: AV over RF
Released: May 2009

QMOD Modulators Data Sheet
QMOD-HDSC Product Manual

  • QMOD-HDSC  Front View
  • QMOD-HDSC Back View

More about RF Modulators

Modulation in its most basic definition is the mixing of two sinusoidal signals. The RF modulator takes an input signal and outputs a modulated signal to be transmitted as a video channel to any number of connected TVs. RF Modulators are used to distribute video in widely diverse installations, including stadiums, arenas, office buildings, college campuses, houses of worship, sports bars, and restaurants

About QMOD-HDSC HDTV Modulator

The QMOD-HDSC HDTV Scaler Modulator is the first HD modulator specifically designed for digital signage integration.

Full Description & Specifications

CR QMOD™ technology is opening the door to new HDTV applications. The QMOD-HDSC HDTV Scaler Modulator is the first HD modulator specifically designed for digital signage integration. The onboard in-stream scaler ingests signage at PC resolution, converting the output to 1080i or 720p video. In addition the scaler features up and down-scaling, zoom, shrink, and positioning.

  • Create your own on-site HDTV broadband distribution system using a variety HD, SD, and AV sources
  • Distribute digital signage, satellite, cable, and media as HD digital cable channels over existing broadband wiring
  • View HD sources at any destination using HDTV displays or tuners

The QMOD-HDSC features super-easy scaling for VGA or Component input up to 1920x 1080 (see resolution list in Specifications), Auto-scales by resolution, format in two simple steps:

  • Horizontal - Up/down arrows zoom and shrink, left/right move image on horizontal axis
  • Vertical - Left/Right rows move image up and down, Up/Down zooms and shrinks vertically

  • Clock Phase adjusts scanning to optimize image
  • QMOD-HDSC automatically saves formatting for each resolution and refresh rate
  • Converts PAL video to NTSC
  • NTSC composite video not presently operational
  • Employs pro-grade HD encoding by NTT that minimizes artifacts for motion video and signage “tickers”
  • Merges audio with video from analog stereo, digital optical and coax inputs
  • Responds to GPI inputs to switch to EAS composite video and audio
  • Creates a high-definition 720p/1080i MPEG-2 stream for broadcast
  • Delivers a fully agile QAM 64/256 digital cable channel 2-135
  • Amplifies for distribution over an on-site broadband cable system with adjustable output level to 29 dBmV, compatible with all cable format broadband systems
  • Sets up with front-panel buttons and easy to use menus, including inputs, encoding, channel, and RF options.
  • Integrates with RS-232 control and feedback with simple ASCII commands
  • Powers up in less than 4 seconds, no OS overhead
  • Saves power and rack space using efficient design, fan-free cooling, and compact enclosure
  • Meets RoHS safety and California energy standards.

Distribution: AV over RF

  • Input: RGBHV or Component
    • Ingest: Scales to 1080i/720p, 59.94 Hz video for encoding
  • Processing: Change size, shape, and positioning
  • Current Resolutions:
    • 1920x1080p at 59.94/60Hz ( V4.9 firmware)
    • 1920x1080i, 29.97/30 Hz, 25 Hz
    • 1440x900 at 60Hz
    • 1280x1024 at 60Hz
    • 1360x768 at 60Hz
    • 1280x768 at 60Hz
    • 1280 x 720p, 59.94.5, 60 Hz, 50 Hz
    • 1152x864 at 75Hz
    • 1024x768 at 60, 75Hz
    • 800x600 at 60, 75Hz
    • 720 x 576p, 50 Hz
    • 720x480p at 59.94/60 Hz
    • 640x480 at 60, 75Hz

Front Panel:
  • Power button
  • Select and directional buttons for menu setup
  • Menu LCD, 2 lines of 20 blue characters each

  • MPEG-2 Profile:MP@HL for HD, MP@ML for SD
  • 1080i, 720p, 480p, and 480i resolution, depending on input
  • Video Encoding bitrate 18 or 25 Mbps
  • MPEG1, Layer 2 audio
  • Latency: 360 ms@720p, 660ms1080i, includes all processing and tuning.
  • HDTV modulators experience more latency, as the media is converted to MPEG-2 and QAM, then distributed over RF.

  • Switchable 64/256 QAM, J83 Annex B, Interleaving Modes (128,1)
  • MER 38 dB typical

RF Output:
  • Agile, channels 2-135 (48-860 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 dBmV typical output power, attenuated in 5 steps, approx 4 dB

Back Panel:
  • Power: 2.1mm coaxial jack (inside center conductor positive)
    • 0.8 A maximum, 11.5 to 13.5 VDC, 12 VDC typical
  • RS-232: DB-9 male, RS-232 data link to control system
    • 300 to 19,200 baud (9600 default), 8 data bits, no parity, 1 stop bit
  • Video Inputs: RGBHV and Componet inputs share pins 1,2,3 on HD15 connector. Component can be connected via HD15
    • RGBHV: RGBHV DB-15 female, feeds to in-stream scaler, accepts up to 1920 x 1080 VGA (1080p input will be scanned as 1450 x 1080)
    • Component: RCA Pr, Pb, Y (1080i/720p/480p), inputs scaled to channel resolution
    • S-Video: Y(Composite), C (Blue Pb) 480p, 29.97 Hz, available if RGB/Component not wired
    • Composite : RCA female (480i) - not presently operational in QMOD-HDSC
  • Video Output: RGB: RGBHV DB-15 female, buffered, from VGA input
  • Audio Inputs: Digital Audio SPDIF: Coax and TOSlink optical output, 48K bit PCM
    • Audio L and R: 2 stereo RCA female jacks
  • QMOD remembers which audio input is assigned to HD and Video inputs
  • RF Out: ‘F’, female, 75 ohm impedance