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User Manual for Blonder Tongue MDDM-860 Micro ATSC QAM to NTSC Audio Video Demodulator and Decoder Click to enlarge the picture
Contents of the user manual for the Blonder Tongue MDDM-860 Micro ATSC QAM
- Product category: RF Equipment Blonder Tongue
- Brand: Blonder Tongue
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Blonder Tongue RF Equipment
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User manual for the Blonder Tongue MDDM-860 Micro ATSC QAM contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Blonder Tongue product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Blonder Tongue user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Blonder Tongue product will considerably shorten its lifespan!
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Product description 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
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Technical parametersBlonder Tongue MDDM-860 Specs | | | 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 | | | | 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 | | | | 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) | | | | 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) | | | | Package Weight | 0.9 lb | | Box Dimensions (LxWxH) | 10.472 x 4.252 x 1.339" |
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