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AJA D4E Serial Digital Encoder User Manual — Installation
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Notes:
1. The D4E is programmed for a 1.3 MHz chroma bandwidth when operating in
composite video mode. This provides the best quality video when encoding component
digital video. However with lower cost monitors, it may be desirable to reduce the
composite chroma bandwidth to 650 Khz to reduce the effects of cross-color artifacts.
This option is available from AJA Video as a special order.
2. The encoder D-to-A chip used in the D4E has an 8-bit input for component digital
video and 10-bit D-to0-A converters for the analog outputs. This configuration is often
described as an 8-bit “signal path” and 10-bit “Quantization.” Due to the internal
processing of the encoder chip, it is advantageous to use 10-bit D-to-A converters at the
output even though the input is 8-bits.
Installation
Typically, D10CE installation consists of the following:
1.
disc5VDC from the convertor
2.
configure the DIP switch for the desired equipment configuration and video formats
3.
connect video equipment to the convertor BNCs
4.
apply +5VDC power to the converter (AJA power supply model DWP)
Specifications
ON
OFF
Output 75% Color Bars (requires a valid
SDI input)
Normal Operation—no test signal is output
Item
Specification
Serial Input
SMPTE 259M 270MB, (SDI)
SDI Cable Equalization
300 meter 8281 typical
Outputs
NTSC/PAL, 2 BNC
Or NTSC/PAL Y/C, 2 BNC
Frequency Response
+/- .25dB to 5.5MHz (Y)
+/- .25dB to 2.0MHz (Chroma - S-Video)
+/- .25dB to 1.3MHz (Chroma - Composite)
2T K factor
< 1% (Y)
Differential Gain
< 1 .5%
Differential Phase
< 1 .5 degree
Y/C delay
10ns maximum
D/A Converters
10 bits
Signal Path
8 bits
Delay (input to output)
1.5us
Output level adjustment
+/- 20% (internal)