Singmai Electronics SM06 User Manual Download

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SingMai Electronics

SM06 User Manual Revision 0.4

Page 1 of 26

SM06

Advanced Composite Video Interface:

HD-SDI to aCVi

converter module

User Manual

Revision 0.4

May 2017

Summary of Contents for SM06

Page 1: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 1 of 26 SM06 Advanced Composite Video Interface HD SDI to aCVi converter module User Manual Revision 0 4 1st May 2017 ...

Page 2: ...story Date Revisions Version 17 07 2016 First Draft 0 1 28 08 2016 Added support for NTSC PAL encoding 0 2 30 12 2016 Updates for Revision 2 PCB 0 3 01 05 2017 DVI inputs removed NTSC PAL inputs removed Minor schematic changes Auto standard detection of 29 59Hz standards 0 4 ...

Page 3: ...Data slicing selection J9 8 Figure 6 aCVi cable length compensation lines 7 8 and 9 of the VBI 10 Figure 7 Original HD SDI image screen capture 11 Figure 8 aCVi image after transmission through 300m of RG59 cable screen capture 11 Figure 9 SM06 Schematics Sheet 1 14 Figure 10 SM06 Schematics Sheet 2 15 Figure 11 SM06 Schematics Sheet 3 16 Figure 12 SM06 Schematics Sheet 4 17 Figure 13 SM06 Schemat...

Page 4: ...ue aCVi encoded video for driving both twisted pair and coaxial cable aCVi is a method to transmit HD video over long distances of existing coaxial or twisted pair cable networks or allow the use of less expensive RG 59 UTP cable in long distance installations SM06 supports the following HD standards 720p 25 30 50 59 94 60Hz 1080p 24 25 29 97 30Hz and 1080i 50 59 94 60Hz Switching between standard...

Page 5: ...ete signal is therefore approximately 12 3MHz chroma upper sideband filter roll off 24 75MHz or about 37MHz setting a minimum sampling frequency of 2 x 37MHz or 74MHz For convenience we choose 74 25MHz as a sampling frequency as this is related to the SMPTE272M standard see Figure 2 For transmission over 300m of RG 59 cable we can expect 18dB loss at higher frequencies 6 2dB 100m 50MHz However the...

Page 6: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 6 of 26 Figure 2 aCVi Spectrum ...

Page 7: ...s SM06 accepts HD SDI inputs switching between the input standards is automatic If a valid HD SDI clock is detected on the input the SDI LOCK LED will light If the HD SDI input has valid TRS timing pulses and is one of the supported aCVi video standards shown in Table 1 the aCVi encoder will convert the HD SDI signal to an aCVi output SM06 provides simultaneous single ended coaxial and differentia...

Page 8: ...the colour bar generator will not operate if the input standard is 720p 59 94Hz 1080p 29 97Hz or 1080i 59 94Hz The SM06 will be shipped set for your requested cable choice i e coaxial or UTP and is indicated in the serial number label on the bottom of the module COAX or UTP For the automatic cable compensation and data transfer to operate correctly it is necessary to select the cable input to extr...

Page 9: ...ver to the transmitter in aCVi mode is selected by J9 J9 pins 1 2 should be connected to select the coaxial aCVi input or J9 pins 2 3 connected for the UTP aCVi input Pull off the small pin header and place over the pins you require for your cable type The panels can then be refitted ...

Page 10: ...to control the amount of pre emphasis The pre emphasis is increased until the high frequency amplitude and the DC amplitude are equal The transmitter also echoes back the pre emphasis value to the receiver to check the transmission is working correctly on line 7 of the VBI Figure 6 shows lines 7 8 and 9 of the VBI Figure 6 aCVi cable length compensation lines 7 8 and 9 of the VBI Adjusting the pre...

Page 11: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 11 of 26 Figure 7 Original HD SDI image screen capture Figure 8 aCVi image after transmission through 300m of RG59 cable screen capture ...

Page 12: ...is read from the ADV7611 status registers Sheet 5 U4 is the cable equalizer for the HD SDI input U18 deserialises the 1 485GHz input to five LVDS inputs and a DDR clock Further demuxing extraction of the TRS timing signals and the video formatting is performed by the FPGA LED D9 lights if U18 is able to lock to incoming HD SDI signal The input standard is also determined by the FPGA Sheet 6 U19 is...

Page 13: ...provides a programmable low pass filter to remove the clock from output video and reconstitute the waveform Sheet 10 U10 A buffers the coaxial aCVi video while U23 converts the differential aCVi to a single ended output J9 selects the input from either the coaxial connector connect J9 pins 1 2 or the UTP connector connect J9 pins 2 3 U10 B filters the input signal and C50 and D3 form a sync tip cl...

Page 14: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 14 of 26 Figure 9 SM06 Schematics Sheet 1 ...

Page 15: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 15 of 26 Figure 10 SM06 Schematics Sheet 2 ...

Page 16: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 16 of 26 Figure 11 SM06 Schematics Sheet 3 ...

Page 17: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 17 of 26 Figure 12 SM06 Schematics Sheet 4 ...

Page 18: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 18 of 26 Figure 13 SM06 Schematics Sheet 5 ...

Page 19: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 19 of 26 Figure 14 SM06 Schematics Sheet 6 ...

Page 20: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 20 of 26 Figure 15 SM06 Schematics Sheet 7 ...

Page 21: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 21 of 26 Figure 16 SM06 Schematics Sheet 8 ...

Page 22: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 22 of 26 Figure 17 SM06 Schematics Sheet 9 ...

Page 23: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 23 of 26 Figure 18 SM06 Schematics Sheet 10 ...

Page 24: ...20p 25Hz 720p 30Hz 720p 50Hz 720p 59 94Hz 720p 60Hz 1080p 25Hz 1080p 29 97Hz 1080p 30Hz 1080i 50Hz 1080i 59 94Hz 1080i 60Hz Luma bandwidth 29 7MHz 1dB 50dB 37 125MHz Chroma bandwidth 7 5MHz 1dB 40dB 12 3MHz Transmission distance 300m of RG 59 coaxial cable 500m RG 59 cable with reduced luma bandwidth Latency 100µs transmitter HD SDI input to receiver HD SDI output Operating temperature 0 40 degC ...

Page 25: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 25 of 26 7 Power Supply Specification Figure 19 Power supply specification Page 1 ...

Page 26: ...SingMai Electronics SM06 User Manual Revision 0 4 Page 26 of 26 Figure 20 Power supply specification Page 2 ...

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