Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder

Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder

Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder

B&H # BLMDDM860 MFR # MDDM-860
Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder

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  • 1Description

The MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder by Blonder Tongue receives one input signal in ATSC 8VSB (digital off-air) or QAM (digital cable) format and delivers one NTSC composite analog video and stereo audio output. The unit allows you to view a digital off-air program on an analog TV set. Headends processing analog broadcasts using Blonder Tongue's MIDM demodulators and MICM modulators can be upgraded to process digital broadcasts by replacing the MIDM with a MDDM.

The unit features a front panel custom mini USB to RS232 interface connector for program control. The front panel provides up and down control channel selection and a two digit display to identify the program channel as well as a 1 digit RF channel display to indicate the frequency/channel plan.

Compact design allows for deployment of 6 channels (6 MDDM modules + 6 MICM modulators) in 2RU
NTSC composite analog video output is in 480i format and supports closed captioning (EIA-608)
Input standards supported are digital off-air (8VSB) and digital cable (ITU-B QAM 64 and 256)
Scans all 8VSB or QAM channels and stores in memory for quick channel selection
Demodulates HDTV/SDTV digital signals to NTSC video and analog L/R audio
On-site firmware updates/status monitoring available through front-panel
Die-cast chassis offers protection against ingress or egress
Adjustable picture sizes for 16:9 to 4:3 image conversion
Supports mono, stereo, and SAP audio modes
In the Box
Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Input
    Connector "F" female
    Standards 8VSB: ATSC Digital Television Standard, A/53E
    QAM: ITU-T J.83 (64 and 256 QAM)
    8VSB Mode Tuning Range: UHF (NTSC channels 14-78), VHF (NTSC channels 2-13)
    Symbol Rate: 10.762 Msymbols/sec
    Bandwidth: 6 MHz
    QAM Mode Tuning Range: CATV (NTSC channels 2-135)
    Symbol Rate: 5.3606 Msymbols/sec (QAM 256); 5.057 Msymbols/sec (QAM 64) - auto detect
    Bandwidth: 6 MHz
    Single Channel Power Level -32 to +45 dBmV
    8VSB Power Level -20 to +30 dBmV
    QAM Power Level -20 to +20 dBmV
    Return Loss 12 dB
    Impedance 75 Ω
    Output
    Connector Video: "F" female
    Audio: RCA; left & right
    NTSC Composite Video Level: 1 V peak-to-peak
    Flatness: 1.0 dB p/v (30 Hz - 4.2 MHz)
    Video to Noise Ratio: 70 dB
    Differential Gain: ±0.75%
    Differential Phase: ±0.50 degree
    Format: 480i
    Aspect Ratio: AFD, center cut, letterbox, full, zoom 1, zoom 2
    Closed Captioning: EIA-608
    Analog Audio Level: 1.0 - 1.2 V peak-to-peak (at -20 dBFs input), 10.0 - 10.5 V peak-to-peak (at 0 dBFs input)
    Frequency Response: 2.0 dB p/v (30 Hz - 20 kHz)
    Audio Signal-to-Noise Ratio: 67 dB (at -20 dBFs input)
    Modes Stereo, mono, SAP
    Alarms/Monitoring/Control
    Front Panel Indicators Major program channel (2 digit LED display)
    Minor program channel (1 digit LED display)
    Channel scan (2 & 1 digit LED displays)
    +100 Channel (red LED)
    SNR (2- & 1-digit LED displays)
    QAM LED (red LED)
    No Lock (flashing QAM LED)
    Picture size (2 & 1 digit LED displays)
    Audio mode (2 & 1 digit LED displays)
    Firmware revision (2 digit LED display)
    Software revision (2 & 1 digit LED displays)
    Unit reset (2 & 1 digit LED displays)
    Front Panel Control CH UP/DN push-buttons (increment major or minor channel up/down)
    ENT push-button (enters or confirms selection)
    SCAN push & hold-button (initiates channel scan)
    PIC SIZE push-button (adjusts picture size/aspect ratio)
    AUD MODE push-button (adjusts audio mode and closed captioning)
    SNR push-button (measures input signal-to-noise ratio)
    QAM/8VSB push & hold-button (toggles between QAM & 8VSB)
    ENT & SNR simultaneously (stops scan at anytime)
    PIC SIZE & AUD MODE simultaneously (unit reset)
    PROG MON (custom mini USB-to-RS232 interface for control & monitoring)
    General
    Power 110 VAC, 60 Hz or 220 VAC, 50 Hz
    Power Dissipation 7 W (per MDDM module)
    Operating Temperature 32 to 122°F (0 to 50°C)
    Storage Temperature -13 to 158°F (-25 to 70°C)
    Operating Humidity 0 to 95% RH @ 35°C max, non-condensation
    Storage Humidity 0 to 95% RH @ 35°C max, non-condensation
    Dimensions (W x D x H) 1.15 x 7.50 x 3.50" (2.92 x 19.05 x 8.89 cm)
    Weight 0.8 lb (0.36 kg)
    Packaging Info
    Package Weight 0.9 lb
    Box Dimensions (LxWxH) 10.472 x 4.252 x 1.339"

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