Transcript
12 Bit Decoder
DEC6800+
DESCRIPTION
FEATURES
The DEC6800+ and DES6800+ are compact, high precision 12 bit decoders that convert NTSC and/or PAL analog composite signals into superior quality component (4:2:2) digital video. Utilizing the advanced Leitch ‘Phase Quadrature Mixing (PQM™)’ Technology for 2D adaptive comb filtering, coupled with TBC capabilities, these cards are designed for high performance and optimal value. They are both able to individually process vertical blanking lines and handle super-black levels. The DES6800+ also adds frame synchronization features. It provides an audio sync clock with video delay and hot-switch outputs for an audio sync interface to accommodate future digital audio modules.
CMPST
CMPST
GENLOCK
GENLOCK
1
1
2
2 DATA I/O
DATA I/O
SDI OUT 3
SDI OUT 1
SDI OUT 3
SDI OUT 1
SDI OUT 4
SDI OUT 2
SDI OUT 4
SDI OUT 2
Back Connector for FR6802+ Frame
Back Connector Overlay for 6800/7000 Series Frame
Clamp control Primary composite video
Video preprocessing
4Analog video processing at +/- 6 dB gain Range. 4+/- 7.5 IRE black level. 4360 degree hue adjustment allowing full range user control. 4Over sampling analog to digital conversion with 12-bit resolution. 412 bit quantization. 4TBC capabilities, locking to VHS or bad microwave feeds. 42D adaptive comb filtering utilizing the new Leitch PQM™ Technology. 4Automatic PAL/NTSC switching (based on input signal). 4Full VBI handling and processing (line by line). 4Test signal generation (75% color bar, FCC composite, black). 4Full control support.
12-bit A/D converter
2-D comb filter
Clock generator and PLL Sync separator
Frame memory
Line memory
Color
demodulator
Data formatter
Frame synchronizer (DES6800+ only)
SDI output serializer
FPGA video processing unit Clock and PLL control
Reference composite video
SDI output
( DES6800+ only)
Data I/O
Audio sync interface (DES6800+ only)
Serializer Genlock (DES6800+ only)
User interface
CPU control unit
Block Diagram - DES6800+
SPECIFICATIONS ANALOG VIDEO INPUT Standards Level Impedance Return Loss Common Mode Rejection Common Mode Range
6800+/6800/7000 Series
Specifications and designs are subject to change without notice.
Video Level Adjust Range NTSC, PAL-B 1V p-p ±2.5 dB 75 >40 dB to 5.75 MHz >60 dB at 50/60 Hz 5 V p-p
±6 dB
ANALOG VIDEO PROCESSING Gain Range Hue Range
±6 dB ±180°
12 Bit Decoder
DEC6800+
DIGITAL VIDEO PROCESSING Input Decoding Algorithm Frequency Response Luma Signal to Noise Ratio Minimum Delay: PAL mode: 200 µs
SERIAL VIDEO OUTPUTS Quantity Standard Connector Impedance Return Loss Signal Level DC Level Overshoot Jitter
12-bit quantized video 3-line adaptive comb ±0.1 dB to 5.75 MHz >60 dB 10 kHz to 6 MHz NTSC mode: 134 µs
4 259M-C; 270 Mb/s BNC per IEC 169-8 75 >18 dB to 270 MHz 800mV ±10% 0.0 V ±0.5 V <10% of amplitude (all outputs terminated) <500ps
PHASING
Horizontal Phase Adjustment Range1 line, with resolution of 37 ns Vertical Phase Adjustment Range 1 frame, with resolution of 1 line
ORDERING INFORMATION DEC6800+ DEC6800+D DEC6800+DR
6800+/6800/7000 Series
Module only Module+ Back Back Only
For more information visit www.leitch.com
STORAGE
Number of Fields Data Path
2 (1 frame) 10 bits
AUDIO SYNCHRONIZATION INTERFACE OUTPUT (DES6800+) Output Ports Connector Impedance
REFERENCE INPUT Level Signal Type Connector Impedance
MODE START UP DEC-6800+ DES-6800+
1 BNC per IEC 169-8 75
1 V p-p Analog composite NTSC/PAL-B BNC 75 8 seconds (Approximately) 10 Seconds (Approximately
