Summary of Contents for Singmai Electronics DB09
- Page 1 DB09 Video Receiver User Manual Revision 0.1 September 2023 DB09 User Manual Revision 0.1 Page 1 of 11...
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Page 2: Revisions
Revisions Date Revisions Version 27-09-2023 First draft DB09 User Manual Revision 0.1 Page 2 of 11... -
Page 3: Table Of Contents
Appendix A: AC-DC adaptor ........................10 Figures Figure 1 DB09 Connections........................5 Figure 2 DB09 Block diagram........................6 Figure 3 Frequency response for various coaxial cable lengths............... 7 Figure 4 Frequency response for various UTP cable lengths..............7 Figure 5 Output filter frequency response (SD setting)................ -
Page 4: Introduction
1. Introduction DB09 is a standard definition (SD) / high definition (HD) video receiver. It accepts analogue video from either twisted pair (differential) or coaxial cable and compensates for long cable runs using an adjustable matching filter. Its 75MHz video bandwidth means it can accept NTSC, PAL, 960H, AHD, HD-CVI and HD-TVI video. -
Page 5: Quick Start Guide
AC between 90 and 264VAC – the full specification is provided in Appendix A. The connections to the DB09 are shown in Figure 1. Connect the 12VDC jack from the adaptor to the +12VDC ‘Power in’ socket on the DB09. The ‘Power On’ LED should light up blue. -
Page 6: Db09 Technical Details
3. DB09 Technical Details A simplified block diagram of the DB09 is shown in Figure 2. Figure 2 DB09 Block diagram. The +12VDC from the AC/DC power adaptor is filtered and protected from over-range or reverse polarity inputs. The 12VDC input is then regulated to provide clean ±5VDC for the module. -
Page 7: Figure 3 Frequency Response For Various Coaxial Cable Lengths
SD or HD video. The filter responses are shown in Figures 5 and 6. This output filter sets the overall frequency response of the DB09. DB09 User Manual Revision 0.1... -
Page 8: Figure 5 Output Filter Frequency Response (Sd Setting)
The buffer amplifies the video by a gain x2 (6dB) so that it can drive a series 75Ω resistor. Each output must be terminated in 75Ω for the DB09 to have the correct gain. Because each output is individually buffered either or both outputs maybe be connected – any unused output may be left unconnected. -
Page 9: Specification
0dB ± 0.5dB. Gain controls set to minimum. Differential gain/phase: <1%, <1°. (NTSC/PAL). Gain controls set to minimum. K-factor: <1%. (NTSC/PAL). Gain controls set to minimum. Group delay: ±10ns. Operating temperature: -10 – +40 degC. DB09 User Manual Revision 0.1 Page 9 of 11... -
Page 10: Appendix A: Ac-Dc Adaptor
Appendix A: AC-DC adaptor The specification for the supplied AC-DC adaptor is shown in Figures 7 and 8. Figure 7 Power supply specification: electrical. DB09 User Manual Revision 0.1 Page 10 of 11... -
Page 11: Figure 8 Power Supply Specification: Mechanical
Figure 8 Power supply specification: mechanical. DB09 User Manual Revision 0.1 Page 11 of 11...
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