8VSB Frequency Agile Demodulator/Decoder

8VSB Frequency Agile Demodulator/Decoder
8VSB Frequency Agile Demodulator/Decoder
DESCRIPTION
DDM-520/DDM-540
FEATURES
The DDM-520 and DDM-540 are frequency agile 8VSB demodulators with MPEG-2 HDTV/
SDTV decoders. These demodulators are capable of demodulating an ATSC transmission
received over the frequency range from 54 MHz to 860 MHz, Off-air Channels 2 to 69 and
Cable channels 2-134.
12 Button Numerical Keypad for direct data entry of
channel
Signal to Noise Ratio and Bit Error Rate information
available
HD/SDI output (DDM-540)
Closed Caption decoded and displayed on the output video
Transport stream display selection for PSIP table
information
Auto programming of available 8VSB channels
SMPTE 310M, DVB-ASI, DVB-SPI transport stream inputs
and outputs
Constellation diagram display selection
CAV, SVGA, SDI, NTSC outputs
Dolby® Digital (AC-3 TM) and Stereo Audio outputs
Standards available: ATSC
The DDM-520 and DDM-540 display the program information of the received transmission on
the video output. The program information tables selection includes PAT, PMT, MGT, VCT, EIT,
STT, and EPG. There is also a selection for Closed Captioning to be decoded and displayed on
the video output. An additional available display is the Constellation Diagram used for
viewing the quality of the modulated signal.
The MPEG-2 transport stream generated by the DDM-520 and DDM-540 is compliant with the
SMPTE 310M, DVB-ASI and DVB-SPI requirements. The MPEG-2 HDTV decoder decompresses
the demodulated MPEG-2 program streams, accepting either HDTV (main profile at high
level) or SDTV (main profile at main level) formats, and generates a multitude of signals
including RGB and YPBPR analog Component Video, NTSC analog composite video, SVGA and
Serial Digital signals for monitoring the video program selected.
The DDM-540 provides for additional monitoring of signals with an HD/SDI output that
conforms to SMPTE 292M and 299M.
DDM-520 Back Panel
An internal color-bar generator can be selected as a source for the video output. A separate
connector provides for the selected AES Dolby® Digital (AC-3TM) encoded audio bit stream
output.
In addition, the decoder will produce an analog stereo audio output for the selected channel
for monitoring purposes.
DDM-540 Back Panel
The DDM-520 and DDM-540 are packaged in a standard 2RU rackmountable chassis. The
front panel has a 4-line, 20-character LCD for viewing channel and configuration information.
SPECIFICATIONS
DEMODULATOR TUNER
Tuning Range:
Input Range:
Connector:
Specifications and designs are subject to change without notice.
Connectors:
D.C. Offset:
DVB-ASI
Data Rate:
Voltage Level:
D.C. Offset:
Rise Time:
Jitter:
Connectors:
Tunes terrestrial VHF/UHF and cable frequencies from 54 to 860
MHz
(VHF Channel 2-13, UHF Channel 14-69, cable 2-134)
-16 to +14 dBmV
"F", 75 ohms female
TRANSPORT STREAM INPUTS AND OUTPUTS
SMPTE 310M
Data Rate:
Voltage Level:
D.C. Offset:
Data Rate Accuracy:
Rise Time:
Jitter:
Connectors:
LVDS
Format:
Voltage Level:
19.39 Mb/s
800 mV p-p ±10%
±0.5 VDC
±2.5 ppm (dependent on received data rate)
<5 ns
<2 ns
BNC, 75 ohms female
25-pin D, female
1.25 VDC ±0.1 VDC
270 Mb/s
800 mV p-p ±10%
±0.5 VDC
<1.2 ns (20% to 80%)
<0.4 ns (1 Hz to 190 kHz)
BNC, 75 ohms female
DVB-SPI, 188 byte, parallel
Low Voltage Differential Signal (LVDS)
0.3 to 0.4 V p-p (differential signaling)
4
Demodulators
8VSB Frequency Agile Demodulator/Decoder
DECODER VIDEO OUTPUT
YPBPR Output:
Connectors:
Voltage Level:
SYNC On Y:
RGB Output:
Voltage Level:
HD and VD:
H+V sync:
Connectors:
SVGA Output:
Connector:
Maximum Voltage Level:
RGB:
HD and VD:
NTSC Output:
Connector:
S Video Output:
Connector:
SDI/480i Output
Voltage Level:
D.C. Offset:
Connector:
HD/SDI Output (DDM-540)
Voltage Level:
D.C. Offset:
Connector:
DDM-520/DDM-540
1080i, 720p, 480i or 480p
BNC, 75 ohms female
700 mV typical
per SMPTE 240M
SMPTE 274M
SMPTE 296M
1080i, 720p, 480p or 480i
700 mV typical
TTL
TTL
BNC, 75 ohms female
RGB, Hsync and Vsync
15-pin D-sub high density, female
1V
TTL
1V p-p typical into 75 ohms
BNC, 75 ohms female
1.0 V p-p typical into 75 ohms
mini-DIN, female
Conforms to SMPTE 259M-C
800 mV p-p ±10%
0.0 V ± 0.5 VDC
BNC, 75 ohms female
Conforms to SMPTE 292M and 299M
800 mV p-p ±10%
0.0 V ± 0.5 VDC
BNC, 75 ohms female
AUDIO OUTPUT
Dolby® Digital (AC-3TM) or AES Output
Level:
0.5 V p-p ±20% into 75 ohms
Connector:
XLR male
Stereo Output
Balanced Stereo left and right
Frequency Response:
20 Hz to 20 kHz ± 2 dB
Connectors:
XLR male
Audio Impedance:
600 ohms
REMOTE CONTROL
Communications:
Supported Baud Rates:
Connector:
POWER REQUIREMENTS
Input:
Consumption:
ENVIRONMENTAL
Operating Temperature:
Storage Temperature:
Humidity:
RS-232
115200 bps
9-pin D-sub, female
100-240 VAC, 50/60 Hz
95 VA
0° to +45° C
- 20°to +50° C
80% maximum (non-condensing)
MECHANICAL
Dimensions:
Height:
Width:
Depth:
Weight:
3.5'' (8.9 cm)
19'' (48.3 cm)
14" (50.3 cm)
12.0 lb. (5.4 kg)
STANDARD ACCESSORIES
Operator's Handbook
Power Cord
5
Demodulators
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