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Singmai Electronics SM01 User Manual

Standard definition video encoder and pattern generator
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SM01
Standard Definition Video
Encoder
and
Pattern Generator

User Manual

Revision 0.5
th
27
February 2015
1

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Summary of Contents for Singmai Electronics SM01

  • Page 1: User Manual

    SM01 Standard Definition Video Encoder Pattern Generator User Manual Revision 0.5 February 2015...

  • Page 2: Table Of Contents

    Contents ......................2 Tables ......................3 Figures ......................3 1. Introduction ....................5 2. Connecting up the SM01 ................7 3. Quick Start Guide ..................10 Switch On and Control ................10 Menu control ................... 12 4. SM01 Patterns ..................19 75% Colour bars ..................

  • Page 3: Tables

    Figures Figure 1 SM01 rear panel................7 Figure 2 SM01 AC-DC converter ..............8 Figure 3 SM01 Front panel................. 10 Figure 4 SM01 Menu structure..............12 Figure 5 75% Component colour bar waveform......... 19 Figure 6 100% Colour bar waveform............20 Figure 7 SMPTE Colour Bar component waveform ........
  • Page 4 Figure 27 Left side: The zone plate shows flickering colours at the subcarrier frequency as the line comb fails on the zone plate image..39 Figure 28 Hum generator................41 Figure 29 PAL horizontal timing (composite output)........43 Figure 30 PAL vertical timing (composite output).

  • Page 5: Introduction

    SM01 is a video encoder and pattern generator supporting standard definition video standards. As a video pattern generator, SM01 can generate 15 NTSC, 15 PAL and 15 960H line based patterns, a zone plate generator, and a programmable 12MHz maximum horizontal frequency sweep. These are output as simultaneous SDI (SMPTE-259M –...
  • Page 6 NTSC Hue (Chroma phase)  CVBS subcarrier frequency  YPbPr Luma amplitude  YPbPr Chroma amplitude  YPbPr Sync amplitude  YPbPr Black level SM01 is powered by a universal input power supply and controlled with a simple and intuitive selection menu.

  • Page 7: Connecting Up The Sm01

    2. Connecting up the SM01 All connections to the SM01 are made via the rear panel: see Figure 1. Figure 1 SM01 rear panel. The AC-DC converter connects to the left hand jack. The SM01 input is protected against reverse polarity. The converter supplied with the SM01 is a model MW173KB manufactured by SL Power Electronics Corp.

  • Page 8: Table 1 Cvbs Output Specification

    A full specification for the supplied AC-DC converter may be found in Appendix B. The SM01 provides both analogue and digital component outputs for connecting to the equipment under test. The CVBS (NTSC/PAL) output is connected to the BNC, ‘CVBS Out’. The specification for the output is shown in Table 1.

  • Page 9: Table 2 Analogue Component Output Specifications

    The analogue component outputs are connected to the BNCs, ‘Y Out’, ‘Pb Out’ and ‘Pr Out’. The specification for the outputs is shown in Table 2. The component output specification is detailed in Appendix A. Parameter Specification Comments Connector Type 75Ω...

  • Page 10: Quick Start Guide

    The front panel of the SM01 is shown in Figure 3. Figure 3 SM01 Front panel. There are just two controls for the SM01. The right hand control (Adjust) switches the unit between On and Standby by pushing it whilst also adjusting the value of parameters by rotating the knob left or right.
  • Page 11 To change a parameter within the lower menu choices choose the required item by aligning the left arrow with it and press the Select button. The parameter will either toggle between the available options (e.g. On or Off) or will show a menu bar where to can select more options via the Adjust control.

  • Page 12: Menu Control

    Menu control The complete menu structure is shown in Figure 4. Figure 4 SM01 Menu structure.
  • Page 13 The following is a brief description of the menu functions. SDI in: Pattern (Encoder) Each button press toggles between the internal patterns (Pattern – default value) and the serial digital (SDI) input (Encoder). (Note: the SDI input is not operative for the 960H or 1280H standards.) Exit Returns to the top level menus.
  • Page 14 (Note the difference between PAL-BG and PAL-I is only the front porch value). PAL-N Forces PAL-N output standard for the composite output and 625 line standard for the YPbPr and SDI outputs. PAL-60 Forces PAL-60 output standard for the composite output and 525 line standard for the YPbPr and SDI outputs.

  • Page 15: Table 5 Sm01 Patterns

    Selects the output pattern when in ‘Pattern’ mode. (In ‘Encoder’ mode the pattern menu cannot be selected.) The patterns available depend on the standard selected. Table 5 lists the patterns available for each standard. A full description of the patterns can be found in Chapter 4. Table 5 SM01 Patterns.
  • Page 16 P’meter (Parameter): Note that some combinations of the parameter settings can give invalid outputs and may result in clipping of the signal. CVBS Adjusts the output amplitude of the composite video output. Default value is 100% (gain of 1). Range is 0-130%. CVBS-Y Adjusts the output amplitude of the luma component of the composite video output.
  • Page 17 YPbPr-C Adjusts the output amplitude of the chroma (Pb/Pr) of the component YPbPr analogue video output. Default value is 100% (gain of 1). Range is 0-130%. YPbPr-S Adjusts the output amplitude of the synchronizing signals of the component Y analogue video output. Default value is 100% (gain of 1). Range is 0- 130%.
  • Page 18 Setup: B’light Controls the brightness of the front panel LCD backlight. Default value is ‘4’. VITSOn (VITSOff) Inserts the CCIR17, CCIR18, CCIR330 and CCIR331 test patterns onto lines 17, 18, 330 and 331 respectively of the PAL output standard if enabled (VITSOn) or the N7CMBF and N7CMPF onto line 17 of fields 1 and 2 respectively of the NTSC standard.

  • Page 19: Sm01 Patterns

    4. SM01 Patterns Below is a detailed description of each of the SM01 patterns. (Note: The NTSC/PAL 1280H standards only provide a set of programmable frequency sweeps that allow the performance of this standard’s extended luma bandwidth to be measured. The description of these patterns are at the end of this chapter.)

  • Page 20: 100% Colour Bars

    100% Colour bars 100% colour bars are used for measuring insertion gain, chroma level and chroma gain and for monitor alignment. The SM01 generates full frame 100% saturated colour bars with a 100% white bar reference and 7.5 IRE setup (for the composite output only). The colour bar sequence is white, yellow, cyan, green, magenta, red, blue and black.

  • Page 21: Smpte Colour Bars (Ntsc Only)

    NTSC-M(J) / PAL-M 100/7.5/100/7.5 PAL / PAL-N 100/0/100/0 Luminance Chrominance Luminance Chrominance White 714.29(714.29) 0.00(0.00) 700.00 0.00 Yellow 638.96(632.86) 591.12(639.05) 620.20 627.33 Cyan 516.73(500.71) 835.58(903.33) 490.70 885.08 Green 441.41(419.28) 780.24(843.50) 410.90 826.79 Magenta 326.44(295.00) 780.24(843.50) 289.10 826.79 251.13(213.57) 835.58(903.33) 209.30 885.08 Blue 128.89(81.43)

  • Page 22: Figure 7 Smpte Colour Bar Component Waveform

    525 Line SMPTE Colour Bars Cb/Cr Pixel No. Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 7 SMPTE Colour Bar component waveform 525 Line Reverse Colour Bars Cb/Cr Pixel No. Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No.

  • Page 23: 75% Bars + Red (Pal Only)

    525 Line SMPTE Pluge Cb/Cr Pixel No. 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 9 SMPTE Pluge waveform 75% Bars + Red (PAL only) The top half of this pattern is 75% colour bars, as described above. The bottom half is a 75% saturation red field.

  • Page 24: 10-Step Staircase (960H Only)

    525 Line Limit ramp Cb/Cr Pixel No. 1200 1200 1000 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 10 Limit ramp waveform. 10-step staircase (960H only) This waveform is ten, equal amplitude, steps of luma and chroma and may be used to measure linearity as well as differential gain and phase.

  • Page 25: 5-Step Staircase

    5-step staircase This waveform is five, equal amplitude, steps of luma and chroma and may be used to measure linearity as well as differential gain and phase. Figure 12 5-step staircase waveform. CCIR330 (PAL only) This waveform is one of the four PAL vertical interval test signals (VITS) and comprises a pulse and bar and modulated five-step staircase.

  • Page 26: N7Cmpf (Ntc-7 Composite, Ntsc Only)

    625 Line CCIR330 Cb/Cr Pixel No. 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 13 CCIR330 waveform. The CCIR330 signal is inserted on line 330 of the CVBS output by enabling ‘VITSOn’ in the Setup menu, (default is on). N7CMPF (NTC-7 Composite, NTSC only) The NTC-7 pattern consists of a 100% white bar, 2T pulse, 12.5T chrominance pulse and a 5-step modulated staircase.

  • Page 27: Ccir17 (Pal Only)

    525 Line N7CMPF Cb/Cr Pixel No. 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 14 N7CMPF (NTC-7) Component Waveform CCIR17 (PAL only) The CCIR17 pattern consists of a 100% reference luminance bar followed by 2T and 20T pulses and a 5 step luminance staircase. The pattern may be used for the measurement of K-factor, luma/chroma gain/delay and luminance linearity.

  • Page 28: 2T20Tpb (960H Only)

    625 Line CCIR17 Cb/Cr Pixel No. 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 15 CCIR17 Waveform 2T20TPB (960H only) The 2T20TPB signal is a pulse, bar and two pulses, 2T and 20T wide. It allows the measurement of K-factor and luma/chroma gain and delay.

  • Page 29: Bounce

    SM01 using this signal and measured with the Tektronix VM700 is shown in Appendix A. Bounce The bounce test signal switches between black and white test signals at field frequency (50 or 60Hz). It is used to measure field time distortion or detect clamping issues.

  • Page 30: Fccmb (Ntsc Only)

    50% pedestal. The CCIR18 signal is inserted on line 18 of the output signal by enabling ‘VITSOn’ in the Setup menu, (default is on). The frequency response of the SM01 measured with the CCIR18 test signal is shown in Appendix A.

  • Page 31: Multi (960H Only)

    625 Line CCIR18 Cb/Cr Pixel No. Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 18 CCIR18 Waveform Multi (960H only) The FCCMB test signal is a pulse reference followed by six luma frequency packets at 0.5MHz, 1.0MHz, 2.0MHz, 4.0MHz, 6.0MHz and 7.75MHz. The chroma signal comprises 5 packets at 0.5MHz, 1.0MHz, 1.5MHz, 2.0MHz and 2.75MHz.

  • Page 32: N7Cmbf (Ntc-7 Combination - Ntsc Only)

    N7CMBF (NTC-7 Combination – NTSC only) The NTC-7 Combination pattern consists of a white bar at 100 IRE, 6 multiburst packets of 50 IRE amplitude on a 50 IRE pedestal (at 0.5MHz, 1.0MHz, 2.0MHz, 3.0MHz, 3.58MHz and 4.2MHz) and a 20,40 and 80 IRE amplitude modulated chrominance on a 50 IRE pedestal.

  • Page 33: Gamut

    625 Line CCIR331 Cb/Cr Pixel No. 1000 Y Value (Dec) Cb Value (Dec) Cr Value (Dec) Y Pixel No. Figure 20 CCIR331 Waveform Gamut The gamut test signal is designed to detect errors in converting between different colour spaces (e.g. from Y,Cb,Cr to RGB). 525 Line Gamut Cb/Cr Pixel No.

  • Page 34: Pathological (Ntsc/Pal Only)

    Pathological (NTSC/PAL only) The pathological output is intended for stressing the equalizer of an SDI receiver. The pattern is in accordance with SMPTE-259M. The pattern consists of two parts, split horizontally into the top and bottom halves of a field as shown in Figure 41. The top half consists of a repetitive active line pattern of values Y=198h and C=300h.

  • Page 35: Matrix

    Figure 23 Bowtie markers waveform. Matrix The matrix test signal comprises five equally spaced patterns in one combination test signal that permits a single test signal analysis of a video component or system. The five signals are: 75% colour bars, 5 step modulated staircase, 2T/20T pulse and bar, luma multi-burst and modulated ramp.

  • Page 36: Zone Plate

    Figure 24 Matrix test signal. Zone Plate Those involved in optics are probably very familiar with the circular zone plate. It is shown in Figure 25.

  • Page 37: Figure 25 The Circular Zone Plate

    Figure 25 The circular zone plate. The zone plate is a two-dimensional linear frequency sweep with the highest frequencies at the edges of the image. It can be used to measure the horizontal and vertical frequency response of system. For example, in figure 26, I show a horizontal line of video and you can clearly see that the left and right edges of the waveform droop, showing some high frequency attenuation.

  • Page 38: Figure 26 The Zone Plate Horizontal Frequency Response

    Figure 26 The zone plate horizontal frequency response. Attenuation on the left and right edges of the image show low pass filtering of the image; attenuation of the top and bottom of the image show vertical filtering, perhaps line to line averaging or issues with a scaler or de- interlacer.

  • Page 39: H Sweep/V Sweep/Zone Pl (Ntsc1280/Pal1280 Only)

    Figure 27 Left side: The zone plate shows flickering colours at the subcarrier frequency as the line comb fails on the zone plate image. Although the frame comb decoder shows no artifacts when the zone plate is still, if we move the zone plate in time similar corruption of the image will occur.

  • Page 40: H Freq (Ntsc1280/Pal1280 Only)

    H Freq (NTSC1280/PAL1280 only) Selects the upper range of the horizontal frequency sweep (this option cannot be selected in vertical sweep or zone plate mode). The range is 0Hz (flat field) to 12.0MHz in 0.1MHz steps. The default value is 1.0MHz.

  • Page 41: Sm01 Noise Generator

    5. SM01 Noise generator SM01 has two noise generators that can add noise to the CVBS output. The first of these uses a pseudo-random number generator to create white noise. A programmable amount of this noise is added to the luma component of the composite output.

  • Page 42: Appendix A: Sm01 Specification

    Appendix A: SM01 specification The SM01 CVBS specifications are shown in Table 8. Parameter Specification Comments PAL B,G,I,N NTSC-M/J, PAL-M Frame Rate/Field 25Hz/50Hz 30Hz/60Hz Rate Line Period 64us 63.555555us Lines/Frame Line Blanking 12us 10.7us Interval Front Porch 1.5us 1.5us 1.65us for PAL-I Line sync pulse 4.7us...

  • Page 43: Table 8 Ntsc/Pal Timing Specifications

    Burst duration 2.25us 2.51us 2.51us for PAL- Burst Amplitude 300mV 40IRE Differential Gain <1% <1% Sin x/x corrected Differential Phase <1deg <1deg Sin x/x corrected K Factor (2T) <1% <1% Chrominance < +/- 5ns < +/- 5ns luminance delay Signal to Noise -70dB (50% -70dB (50% Unweighted...

  • Page 44: Figure 30 Pal Vertical Timing (Composite Output)

    Figure 30 PAL vertical timing (composite output).

  • Page 45: Figure 31 Ntsc Horizontal Timing (Composite Output)

    Figure 31 NTSC Horizontal timing (composite output).

  • Page 46: Figure 32 Ntsc Vertical Timing (Composite Output)

    Figure 32 NTSC Vertical timing (composite output). Figure 33, below, shows the 75% colour bar composite output of the SM01 compared with the reference levels of the Tektronix VM700 and the corresponding vector diagram in Figure 34.

  • Page 47: Figure 33 Ntsc 75% Colour Bar Composite Output

    Figure 33 NTSC 75% colour bar composite output.

  • Page 48: Figure 34 Ntsc 75% Colour Bars Vectors

    Figure 34 NTSC 75% colour bars vectors...

  • Page 49: Figure 35 Pal 75% Colour Bars (Composite Output)

    Figure 35 PAL 75% colour bars (composite output)

  • Page 50: Figure 36 Pal 75% Colour Bars Vectors

    Figure 36 PAL 75% colour bars vectors Figure 37 shows the K-factor (2T pulse) distortion measurement for the SM01 measured on a Tektronix VM700 using the NTC-7 Composite test signal.

  • Page 51: Figure 37 Ntsc K_Factor Measurement

    Figure 37 NTSC K_Factor measurement. Figure 38 shows the luma/chroma delay and gain measurement for the SM01 measured on a VM700 using the NTC-7 Composite test signal.

  • Page 52: Figure 38 Ntsc Ntc-7 Luma/Chroma Delay/Gain Measurement

    Figure 38 NTSC NTC-7 Luma/Chroma delay/gain measurement Figure 39 shows the differential gain and phase measurements for the SM01, measured using the Tektronix VM700 on the NTC-7 waveform.

  • Page 53: Figure 39 Ntsc Differential Gain/Phase Measurement

    Figure 39 NTSC Differential gain/phase measurement.

  • Page 54: Figure 40 Ntsc Noise Measurement (Pedestal Waveform)

    Figure 40 NTSC noise measurement (Pedestal waveform).

  • Page 55: Figure 41 Luma Frequency Response (Ccir18 Test Signal)

    Figure 41 Luma frequency response (CCIR18 test signal).

  • Page 56: Figure 42 Chrominance Non-Linearity (Using N7C-Combination Test Signal)

    Figure 42 Chrominance non-linearity (using N7C-Combination test signal). The SDI output measurements, (measured using a Tektronix WFM700M), are shown in Figures 43 to 46.

  • Page 57: Figure 43 Sdi Output 525 Line Format Measurement

    Figure 43 SDI output 525 line format measurement Figure 44 SDI output 625 line format measurement...

  • Page 58: Figure 45 Sdi Output 625 Line Eye Pattern

    Figure 45 SDI output 625 line eye pattern...

  • Page 59: Figure 46 Sdi Output 625 Line Jitter Measurement

    Figure 46 SDI output 625 line jitter measurement...

  • Page 60: Appendix B: Power Supply Specification

    The AC-DC converter supplied with the SM01 is a model MW173KB from SL Power Electronics Corporation. It accepts all AC inputs from 100- 240VAC and provides a 9V, 3A DC output for the SM01. The detailed specification is shown below.

  • Page 61: Figure 48 Ac-Dc Converter Specification

    Figure 48 AC-DC converter specification: Page 2...

  • Page 62: Figure 49 Ac-Dc Converter Specification

    Figure 49 AC-DC converter specification: Page 3...

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