DD860 Digital Tuner and VSB/QAM Demodulator
DD860 Digital Tuner Demodulator
The R.L. Drake DD860 Digital Tuner Demodulator is a professional quality, modular, digital headend component designed to provide optimum performance for VSB or QAM demodulation. It can be used for demodulating signals from CATV systems or off-air antennas.
- Demodulates 8VSB, 16VSB, 64QAM or 256QAM modes from off-air or CATV sources from 54 to 858 MHz.
- Two ASI outputs (BNC connectors) are provided. SPI output (LVDS output on 25 pin connector) is available on special order.
- Convenient front panel channel selection for channel and demodulation mode entry.
- Front panel LED signal-to-noise ratio, lock, and error indicators.
- ATSC compliant demodulation and FEC decoding in VSB modes.
- DVB or DigiCipher® II compliant demodulation in QAM modes.
- Automatic selection of DigiCipher® II or DVB FEC decoding when in QAM modes.
- IRC and HRC channel plans may be tuned by moving an internal jumper.
- Wide range equalizer eliminates multipath effects.
- Low phase noise tuner provides reliable operation with dense signal constellations.
- An NTSC co-channel rejection filter for 8VSB modes is incorporated.
- Used with the DRMM12 rack mount and PS8 power supply.
- Made in the U.S.A.
Download the owners manual (PDF)
| Drake Digital DD860 Technical Specifications | |
|---|---|
| RF | |
| Input Frequency: | 54-858 MHz, Broadcast (2-69) or EIA CATV (2-134) Channels(standard, HRC, IRC) |
| Optimum Input Level: | -15 dBmV to +15 dBmV |
| Input Impedance: | 75 Ohms (return loss of 6 dB minimum) |
| Input Channel Bandwidth: | 6 MHz. |
| Maximum Input Power: | < -16 dBm summed over entire input range. |
| Input Noise Figure: | 12 dB, maximum |
| Input AGC Range: | -20 dBmV to +30 dBmV |
| Demodulation | |
| Modulation types Accepted: | 8VSB, 16VSB, 64QAM, and 256QAM (according to ATSC A/53 and ITU-T J.83 Annex A and B) |
| Symbol Clock Frequency: | 8VSB and 16VSB: 10.762 MHz. |
| Symbol Rates: | 64QAM: 5.057 Ms/sec. 256QAM: 5.3605 Ms/sec. |
| Equalizer span: | -6 to +40 µSec. delays. |
| Outputs | |
| Standard ASI Output Version: | ASI Serial Output according to DVB specifications via two75 Ohm type BNC connectors. (two identical outputs). |
| Special Order SPI Output Version: | Parallel Output according to DVB SPI (Synchronous ParallelInterface) on a DB25 Female Connector using LVDS (Low Voltage DifferentialSignaling). |
| General | |
| DC Power requirements: | +5 VDC @ 750 mA, +12 VDC @ 85 mA. (Drake PS8 Power Supplyrecommended.) |
| Operating Temperature Range: | 0°C to +50°C Ambient temperature around case. |
| Mechanical Dimensions: | 4.2" W x 3.5" H x 8.38" D (10.7 cm W x 8.9 cm H x 21.3 cm D). |
| Weight: | 1 lb. 9 oz. (0.72 kg.) |
Specifications, price, and availability are subject to change without notice or obligation.
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