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Tektronix 21 User's Manual

1. 6 4 32 TPG20 SECTION 4 Pattern Information MOVING ZONE PLATE SWE A Fresnel zone plate on a black background is provided covering spatial frequencies up to 8MHz with markers at 0 4MHz and 8MHz It may be moved in all of the modes available using the MOVEMENT function of the TPG The zone plate and markers are contained within an invisible rectangle which defines the extremities Movement of this rectangle is confined to the area contained within the larger invisible rectangle The zone plate is especially useful for checking line or frame based comb decoders and scan converters performance PEAK WHITE PULSE This peak white pulse 700mV has a HAD of 600ns with rise and fall times of 300ns The falling edge at HAD defines the end of active picture time TPG200PS030497 Version 2 Issue 1 DD SNELL amp WILCOX 9 4 33 TPG20 SECTION 4 Pattern Information Important Information The following information concerns oscilloscope viewing of line based patterns produced by the TPG20 in PAL D2 and PAL N formats When the above mentioned patterns are viewed on an oscilloscope at line rate e g 20us per division and the signal triggered from internal line sync a picture edge will appear to have a horizontal jitter component of about 100ns as shown below exaggerated for clarity This is quite normal and correct and does not indicate that the TPG is malfunctioning Apparent jitter of about 1
2. us 51 22 dt ns dt freq Marker Mode Off Fs 14 32 s 44 14 51 2 Sample 632 132 FILE C VPGLLNINTSCISMPTE3 DESCRIPTION OF FACILITIES AVAILABLE lt 1 gt Y 10b Displays the Y luminance part of the signal 10b indicates the signal is 10 Bit lt 2 gt C 9b Displays the C chrominance part of the signal 9b indicates the signal is 9 Bit lt 3 gt CCVS Displays the complete composite signal if applicable This function selects the waveform that will be displayed The number refers to the normal 1 to 0 keys on the keyboard A Autosetup Pressing the A key clears any changes made to the settings and allows the complete line waveform to be displayed TPG200PS030497 Version 2 Issue 1 SNELL amp WILCOX 6 5 4 TPG20 SECTION 5 Waveform View Program Facility Move The waveform may be moved or positioned within the display graticule using the four up down left right keys Ins Del H scale Pressing the Insert key expands the waveform in the horizontal direction and pressing the Delete key compresses the waveform in the horizontal direction The scale is indicated in the box this example shows 1 4 us div and reference timing points indicated in this example as us 44 14 51 2 58 11 V scale Pressing the key expands the waveform in the vertical direction and pressing the key compresses the waveform in the vertical direction The scale is indicated in the box this example shows 1
3. July 1997 Snell amp Wilcox Ltd Durford Mill Petersfield Hampshire GU31 5AZ United Kingdom Tel 44 0 1730 821188 Fax 44 0 1730 821199 TPG200PS080797 Version 2 Issue 4 DD ENEIT View Program V1 0 TPG V11 1 Safety Warnings Always ensure that the unit is properly earthed and power connections correctly made This equipment shall be supplied from a power system providing a PROTECTIVE EARTH connection and having a neutral connection which can be reliably identified The power terminals of the IEC mains input connector on the rear panel are identified as shown below E Protective Earth Conductor N Neutral Conductor L Live Conductor Power cable supplied for countries other than the USA The equipment is normally shipped with a power cable with a standard IEC moulded free socket on one end and a standard IEC moulded plug on the other If you are required to remove the moulded mains supply plug dispose of the plug immediately in a safe manner The colour code for the lead is as follows GREEN YELLOW lead connected to E Protective Earth Conductor BLUE lead connected to N Neutral Conductor BROWN lead connected to L Live Conductor Power cable supplied for the USA The equipment is shipped with a power cord with a standard IEC moulded free socket on one end and a standard 3 pin plug on the other If you are required to remove the moulded mains supply plug dispose of the plug immediately in a safe ma
4. st Amplitude Line Syncs Kaa Sync Amplitude Back Porch Sync Level Line Period 63 556us 15 734kHz Line rate Subcarrier Frequency 3 579545MHz 5Hz Line Blanking 10 70us 1Hz for 0 2ppm crystal Line Syncs 4 7us Subcarrier Calculation 227 5fh Line Front Porch 1 50us Sync Amplitude 40 IRE Units 1 Line Back Porch 4 50us Peak White Amplitude 100 IRE Units 1 Burst Start 19 cycles of SC Black Level Set up 7 5 IRE Units 1 Burst Duration 9 cycles of SC Rise and Fall Times Burst Amplitude 40 IRE 1 Line Syncs 140ns 10 to 90 o Field Blanking Equalising Pulse Equalising Pulses Broad Pulses Line 1 Beginning of First Field Number of Lines 525 Field Blanking 20 lines 1 5us SMPTE Field Period 16 6833ms 60Hz 20 lines 10 7us CCIR Pre equalising Pulses 6 at 2fh 2 30us wide Rise and Fall Times Post equalising Pulses 6 at 2fh 2 30us wide Equalising Pulses 140ns 10 to 90 Broad Pulses 6 at 2fh 27 1us wide Note that only some patterns have video half lines as shown above TPG200PS030497 Version 2 Issue 1 5 SNELL amp WILCOX 6 4 14 TPG20 SECTION 4 Pattern Information Component Waveforms EBU Specifications Values shown are for 100 Colour bars Luminance rise and fall times 200ns U and V rise and fall times 200ns for YPrPb 300ns for D1 YPrPb Green GBR Waveforms Values shown are for 100 Colour bars Rise and fall times 200ns Other parameters as per specifications for 625 525 waveforms TPG200P
5. 10 71mV to 100 714mV luminance ramp 142 mV pk pk chroma Staircase 5 Selected formats Steps at 0 20 40 60 80 and 100 luma steps 0 chroma Staircase 10 In PAL D2 Peak value is 690mV Modulated staircase 5 Selected formats Steps as Staircase 5 Modulated with sub carrier with 280mV pk pk chroma NTSC format Luma steps as Staircase 5 Modulated with sub carrier with 286mV pk pk chroma Shallow ramps Selected formats 12 ramps starting at 5 to 105 Each ramp is 10 pk pk 0 chroma EBU pluge 1 5 625 formats OmV 110mV 200mV 450mV and 700mV pluge Multi burst 5 8 Selected formats Bursts at 0 5 1 0 2 0 4 0 4 8 5 8 MHz Centred at 350mV Burst amplitude 420mV pk pk 0 Chroma Horizontal multi burst Selected formats Bursts at 1 0 2 0 3 0 4 0 5 0 6 0 MHz Burst amplitude 700mV pk pk 0 Chroma Line sweeps All sweep patterns except SECAM have frequency markers The luminance channel has markers at 1MHz intervals first marker at 1MHz and chrominance channels have markers at 0 5MHz intervals first marker at 0 5MHz TPG200PS030497 Version 2 Issue 1 DD SNELL amp wiLcox 4 10 TPG20 SECTION 4 Pattern Information Center sweep 5 75MHz Selected formats Symmetrical sweep centered at 5 75MHz Amplitude 700mV pk pk 0 Chroma Center sweep 3 5MHz Selected formats Symmetrical sweep centered at 3 5MHz Amplitude 700mV pk pk 0 Chroma Colour sweep PAL format 50 350m
6. SNELL amp WILCOX JO 3 16 TPG20 SECTION 3 The SELECT button should then be pressed to select the desired PAL standard Note that the major difference between PAL B G and PAL standards is the rise and fall times of the sync and equalising pulses See Generalised Parameters of Waveforms for more details When the SYSTEM button is pressed a fourth time the firmware version and the TPG model type will be displayed in the window SYSTEM Calibration Mode Operation of this button allows the system variables to be set up changed and saved Switch off power to the unit and wait for a few seconds Press and hold down the SYSTEM button switch on the power and release the after 3 4 seconds A pattern in the required format should now be loaded The SELECT button should now be pressed The system variables may now be set up for the current format The window will display CalibrationSetup Mode It is important to note that once the system variables have been changed and saved these values will be stored in a non volatile memory and will be invoked when the unit is powered up again To change the system variables proceed as follows GAIN CALIBRATION FOR FORMATS Press the SYSTEM button once The window will now display the first system variable that may be changed e g Set 625 COMPS 0 0dB NOTE This operation changes the values for the specified format only To calibrate for any given format a pattern of that
7. 09 MOD STAIRCASE 5 TPG200PS030497 Version 2 Issue 1 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL 625 D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL 625 PAL I D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL 625 D2 625 PAL D2 625 PAL D2 625 PAL D2 PULSES 00 PULSE amp BAR 2T 01 SIN X X 02 MULTIPULSE 5 8 03 COLOUR M PULSE SWEEPS 00 MULTI BURST 5 8 01 MULTI BURST 6 5 02 HORZ MULTIBURST 03 LINE SWEEP 6 5 04 LINE SWEEP 8 0 05 COLOUR SWEEP 06 YELLOW M BURST TIMING 00 SQUARE FIELD TEST LINES 00 VITS 17 01 VITS 18 02 UK ITS 1 LINE 19 03 UK ITS 2 LINE 20 04 VITS 330 05 VITS 331 OTHERS 00 ZERO R Y COLOURS 01 ZERO G Y COLOURS 02 ZERO B Y COLOURS 03 ZERO COLOURS 04 SDI CHECK FIELD 05 AUTO TEST MATRIX 06 APL 12 5 07 APL 87 5 08 STREAK TEST NOTE SECTION 4 625PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 625 PAL D2 refers to simult
8. for non linearity tests CIRCULAR GREY SCALE The grey scale circular pattern grey cone is useful for visual assessment of quantisation distortion dither etc CHART FORMAT This is the text information about chart format e g PAL INTERLACE CHECK This black box contains a narrow horizontal cross section 168 ns oblique white line The purpose of this test is to show the effect of lack of roper interlacing lt appears as a staircase instead of the smooth line in the case of incorrect interlacing REGISTRATION CHECK This area contains black box with white cross 200 ns It can be used for raster registration check 2D aperture correction symmetry measurement etc TPG200PS030497 Version 2 Issue 1 SNELL amp WILCOX 4 26 TPG20 SECTION 4 Pattern Information HORIZONTAL AND DIAGONAL FREQUENCY RESPONSE CHECK Bursts with frequencies correspondingly to 3 58 MHz verticals NTSC SC 300 tvi verticals 300 tvi diagonals 400 tvl diagonals verticals PAL SC They are useful for quick check of frequency response testing 2D aperture correction devices and evaluation of cross colour effects with conventional and comb type _ decoders tvl television lines for verticals 1 tvl is approx 0128MHz Note For 625 50 2 1 interlaced systems 1 MHz is equivalent to 78 tvl so 400 tvl is about 5 1 MHz All frequencies shown as tvis are in white text and frequencies in MHz are in black text FREQUENC
9. levels at the outputs a pattern that would normally produce the same output level at both connectors should be selected A suitable pattern would be one that contained a peak white signal in RGB format and the white section used for alignment The signal level at the B output relative to the A output depending on the pattern selected may be changed using this function Default value will be the factory settings in arbitrary units Relative signal levels between the A and C outputs offset NOTE that to correctly align the relative signal levels at the outputs a pattern that would normally produce the same output level at both connectors should be selected A suitable pattern would be one that contained a peak white signal in RGB format and the white section used for alignment The signal level at the C output relative to the A output depending on the pattern selected may be changed using this function Default value will be the factory settings in arbitrary units TPG200PS030497 Version 2 Issue 1 LI ETENI 3 17 TPG20 RS232 Baud Rate The Baud rate of the remote control facility may be set using this function It may be set to the following values 300 600 1200 2400 4800 9600 or 19 200 The factory setting is 19 200 Other parameters are fixed at 8 Bits data no parity 1 stop Bit and are not adjustable Crystal Selections Note that this function is for information only Under no circumstances should these pa
10. 0 5V to OV into 75 Ohms and has a duration of 1 TV Line It may be programmed to correspond to any TV line in a frame or colour frame This trigger pulse may be used to trigger an oscilloscope etc so that a line waveform may be easily displayed and analysed TPG200PS030497 Version 2 Issue 1 KI ETTENTME 3 3 3 TPG20 SECTION 3 FRONT PANEL CONTROLS General Mode of Operation The TPG20 is operated by two basic methods GAIN FORMAT PATTERN TRIGGER SYSTEN 1 By operating illuminated push buttoris 9 9 9 2 By use of a continually rotating knob rene PR TT connected to a optical digital shaft encoder grammable Digital Test Pattern Generator AUDCEJ Kl which allows alpha numeric data to be shown in a Liquid Crystal display This will be referred to hereafter as the CRK It may be rotated in either direction When certain parameters such as SC PHASE are being set using this control the number will increment in the least significant steps However the numerical value displayed will increase at a rate proportional to the speed that the knob is rotated i e when the knob is rotated slowly the number will increase by least significant steps and when rotated quickly the number will increase by greater steps When the maximum limit of the range is reached clockwise rotation the number will restart at the minimum value and then increase again When the minimum limit of the range is reached ant
11. 5 525 NTSC D2 04 COLOR MULTIPULSE 525 NTSC D2 17 SATURATION TEST 525 NTSC D2 18 SAT N TEST 0 Set up 525 NTSC D2 SWEEPS FLAT FIELDS 00 MULTI BURST 5 8 525 NTSC D2 01 100 M BURST 5 8 525 NTSC D2 00 BLACK 525 NTSC D2 02 MULTI BURST 4 2 525 NTSC D2 01 BLACK 0 Set up 525 NTSC D2 03 HORZ MULTIBURST 525 NTSC D2 02 WHITE 100 IRE 525 NTSC D2 04 LINE SWEEP 6 5 525 NTSC D2 03 GREY 50 IRE 525 NTSC D2 05 COLOR SWEEP 525 NTSC D2 04 YELLOW 75 525 NTSC D2 06 YELLOW M BURST 525 NTSC D2 05 YELLOW 75 0 Set up 525 NTSC D2 06 CYAN 75 525 NTSC D2 TIMING 07 CYAN 75 0 Set up 525 NTSC D2 00 SQUARE FIELD 525 NTSC D2 08 GREEN 75 525 NTSC D2 09 GREEN 75 0 Set up 525 NTSC D2 TEST LINES 10 MAGENTA 75 525 NTSC D2 11 MAGENTA 75 0 Set up 525 NTSC D2 00 NTC 7 COMPOSITE 525 NTSC D2 12 RED 75 525 NTSC D2 01 NTC 7 COMBINAT N 525 NTSC D2 13 RED 75 0 Set up 525 NTSC D2 02 FCC COMPOSITE 525 NTSC D2 14 BLUE 75 525 NTSC D2 03 FCC MULTIBURST 525 NTSC D2 15 BLUE 75 0 Set up 525 NTSC D2 04 VIRS 525 NTSC D2 MONITOR SET UP OTHERS 00 CROSS HATCH 525 NTSC D2 00 ZERO R Y COLORS 525 NTSC D2 01 CROSS HATCH DOTS 525 NTSC D2 01 ZERO G Y COLORS 525 NTSC D2 02 CROSS HATCH MRKR 525 NTSC D2 02 ZERO B Y COLORS 525 NTSC D2 03 BLK CROSS HATCH 525 NTSC D2 03 SDI CHECK FIELD 525 NTSC D2 04 BLK CRS HTH DOTS 525 NTSC D2 04 AUTO TEST MATRIX 525 NTSC D2 05 BLK CRS HTH MRKR 525 NTSC D2 05 APL 10 525 NTSC D2 06 CROSS MATRIX 525 NTSC D2 06 APL 90 525 NTSC D2 07 100 WINDOW 5
12. D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D1 YPrPb 625 D1 YPrPb SECTION 4 625D1 YPrPb PULSES 00 PULSE amp BAR 2T 01 PULSE 8 BAR 2T 02 PULSE amp BAR 2T 4T 8T 03 PULSE 4 BAR 2T 4T 8T 04 PULSE BAR 2T 4T 10T 05 PULSE BAR 2T 4T 10T 06 SIN X X 07 SIN X X 08 MULTI PULSE 5 8 09 MULTI PULSE 5 8 SWEEPS 00 MULTI BURST 5 75 01 MULTI BURST 5 75 02 MULTI BURST 5 8 03 MULTI BURST 5 8 04 HORZ MULTIBURST 05 HORZ MULTIBURST 06 SWEEP 5 5 2 75 07 SWEEP 5 5 2 75 TIMING 00 BOWTIE ins RES 01 BOWTIE ins RES 02 BOWTIE 5ns RES 03 BOWTIE 5ns RES TEST LINES 00 VITS 17 01 VITS 17 02 VITS 18 03 VITS 18 04 UK ITS 1 LINE 19 05 UK ITS 1 LINE 19 06 UK ITS 2 LINE 20 07 UK ITS 2 LINE 20 08 VITS 330 09 VITS 330 10 VITS 331 11 VITS 331 12 MULTI VITS 13 MULTI VITS OTHERS 00 SDI EQU TEST 01 SDI PLL TEST 02 SDI CHECK FIELD 03 BLANKING TEST 04 AUTO TEST MATRIX 05 AUTO TEST MATRIX 5 sNEtL amp wiicox JO 625 D
13. EN 50082 1 1992 The European Standard EN 50082 1 1992 has the status of a British Standard and is related to European Council Directive 89 336 EEC dated 3rd May 1989 Electromagnetic Compatibility Generic Emission Standard BS EN 50081 1 1992 The European Standard EN 50081 1 1992 has the status of a British Standard and is related to European Council Directive 89 336 EEC dated 3rd May 1989 Safety Standards This unit conforms to EN60950 1992 as ammended by ammendment A1 May 1993 and ammendment A2 March 1994 Specification for safety of technology equipment including electrical business equipment EMC Performance of Cables and Connectors Snell amp Wilcox products are designed to meet or exceed the requirements of the appropriate European EMC standards In order to achieve this performance in real installations it is essential to use cables and connectors with good EMC characteristics All signal connections including remote control connections shall be made with screened cables terminated in connectors having a metal shell The cable screen shall have a large area contact with the metal shell COAXIAL CABLES Coaxial cables connections particularly serial digital video connections shall be made with high quality double screened coaxial cables such as Belden 8281 or BBC type PSF 1 2M D TYPE CONNECTORS D type connectors shall have metal shells making good RF contact with the cable screen Connectors having dimples which imp
14. This is the term used to describe the mathematically correct generation of PAL format signals This signal has a defined relationship between the horizontal scanning frequency and the colour subcarrier frequency given by the equation fh Hasse 1 1135 625 Where fh Horizontal scanning frequency fsc Colour sub carrier frequency This may re arranged as 4 fsc AA 1135 JH or 4 fsc NET ee or 4 fsc 1135 fh 0 0064 fh HZ 4 or 4 fse 1135 0064 fh 0 aaa aaa eee aaa wan eee ed It is clear from equation 5 that 4fsc is not an integer multiple of fh the horizontal scanning rate However when PAL signals are digitised or generated as a digital source the sampling frequency used is 4fsc If equation 5 above was 4fsc 1135fh it would mean that there would be exactly 1135 samples during each line sync edge to sync edge and each sample point would occur at exactly the same place on each line But as 4fsc is actually a frequency slightly greater than 1135 times fh there will be slightly more than 1135 samples during each line 1135 0064 samples per line and the sampling point will occur slightly earlier on subsequent lines Normally this is of no consequence as when the signal is converted from digital to analogue 4fsc is again used for sampling and the signal is correctly re constituted This is the way non orthogonal PAL is produced TPG200PS030497 Version 2 Issue 1 M SNELL amp WILCOX E 4 35
15. YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb SWEEPS 00 MULTI BURST 4 2 01 HORZ MULTIBURST 02 SWEEP 5 5 2 75 TIMING 00 BOWTIE 5ns RES 01 SQUARE FIELD OTHERS 00 LUMA CORING 01 UV CORING 02 AUTO TEST MATRIX KM SNELL amp WILCOX JO 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 4 8 TPG20 Pattern Information BARS 00 FULL FIELD BARS 100 0 75 0 525 RGB 01 F F BARS NO SYNC 100 0 75 0 02 100 COLOR BARS 100 0 100 0 03 EBU BARS amp RED 100 0 75 0 04 EBU SPLIT BARS 100 0 75 0 05 TARTAN BARS 75 0 75 0 s 06 VIDIPLEX BARS 100 0 75 0 07 75 HORZ BARS 75 0 75 0 08 100 HORZ BARS 100 0 100 0 FLAT FIELDS 00 BLACK 01 WHITE 100 02 GREY 50 03 YELLOW 75 04 CYAN 75 05 GREEN 75 06 MAGENTA 75 07 RED 75 08 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 CROSS HATCH DOTS 02 CROSS HATCH MRKS 03 BLK CROSS HATCH 04 BLK CRS HTH DOTS 05 BLK CRS HTH MRKS 06 CROSS MATRIX 07 GAMMA TEST TPG200PS030497 Version 2 Issue 1 LINEARITY 00 RAMP 100 525 RGB 01 SHALLOW RAMPS 525 RGB 02 VALID RAMP 525 RGB 03 STAIRCASE 5 525 RGB 04 STAIRCASE 10 525 RGB 525 RGB PULSES 525 RGB 525 RGB 00 PULSE amp BAR 2T 01 SIN X X 02 MULTI PULSE 4 2 525 RGB SWEEPS 525 RGB 525 RGB 00 MULTI BURST 4 2 525 RG
16. increments in field steps Frame Movement increments in frame steps 3 2 Pull Down Still for 3 fields then still for 2 fields then still for 3 fields etc Simulates film based material displayed at 60 Hz BOUNCE A Bounce signal is a waveform that alternates from one pattern e g Black to another e g White at a regular rate imitating a signal that has a continuously changing A P L Average Picture Level This type of waveform is often used to check the correct operation of black level clamp circuits To produce a Bounce pattern different patterns OF THE SAME FORMAT should be loaded into the A and memory banks See OUTPUT Select The MOVEMENT button should then be pressed and the window will display Bounce Rate Off Rotating the CRK will allow the rate at which the output alternates from pattern A in the memory bank to pattern B in the memory bank to be set The fastest rate is every other frame i e pattern A for one frame pattern B for the next frame etc The slowest rate is pattern A for 100 frames and pattern B for 100 frames Any value between 1 and 100 frames in 1 frame steps may be set Note that the bounce rate cannot be stored SNELL amp WILCOX i 3 15 TPG20 SECTION 3 SYSTEM When pressed the window will display Set D2 OutputParallel Rotating the CRK will show the alternative display Set D2 OutputSerial NOTE that either Parallel or Serial Digital outputs may be set but not both Thi
17. the next pattern name The TPG sends OK lt RETURN gt for end of list 20 lt ESC gt J x lt RETURN gt This retrieves the device types from the PROM slots x defines the slot 0 4 The TPG returns the device type and its location 21 lt ESC gt Z lt RETURN gt This command instructs the TPG to perform a power on reset This should be performed whenever a FLASH device has been programmed and the pattern list changed TPG200PS030497 Version 2 Issue 1 Note the following 22 to 26 inclusive are only valid when in factory or calibration mode TPG20 and TPG21 22 lt ESC gt i lt RETURN gt Save gain calibration level 23 lt ESC gt W n lt RETURN gt Set DAC B offset where n is 1000 to 1000 24 lt ESC gt w lt RETURN gt Save DAC B offset value 25 lt ESC gt X n lt RETURN gt Set DAC offset where is 1000 to 1000 26 lt ESC gt x lt RETURN gt Save DAC C offset value Note that the following commands 27 to 29 inclusive apply only to the TPG21 27 lt ESC gt E n sss xxx lt RETURN gt Start program sequence for FLASH PEROM where n is the slot position 0 4 sss is the sector size 128 256 or 512 and xxx is the file size this must not exceed 1048576 bytes The TPG echoes OK lt RETURN gt when ready 28 lt ESC gt e Once the program sequence has been started each packet of data is sent with this header The exact number of bytes as speci
18. to 180 This sets the sub carrier phase for SC lock TPG200PS080797 Version 2 Issue 2 SECTION 3 9 lt ESC gt M n lt RETURN gt Set movement mode where n is 0 field movement 1 frame movement and 2 3 2 telecine mode 10 lt ESC gt U n lt RETURN gt Set movement pause where n is 0 to 255 This sets the pause time for linear movement 11 lt ESC gt R n lt RETURN gt Set movement speed where is 0 to 10 This sets the movement speed in pixels and lines per field or frame dependent on the movement mode 12 lt ESC gt Y n lt RETURN gt Set movement style where is 0 Off 1 vertical 2 horizontal 3 diagonal 4 circular 5 Horizontal SHM 6 Vertical SHM 13 lt ESC gt lt RETURN gt Restores gain calibration No parameters required 14 lt ESC gt L f g nnn lt RETURN gt Load internal pattern where f is the format number o PAL 1 625 D1 2 625 YPbPr 3 625 RGB 4 SECAM 5 NTSC 6 525 D1 7 525 YPbPr 8 525 RGB 9 NTSC4 43 A PAL M B PAL N C USER COMPOSITE USER D1 E USER YPbPr F USER RGB g is the group number 0 UNSPECIFIED 1 COLOUR BARS 2 FLAT FIELDS 3 MONITOR SETUP 4 LINEARITY 5 PULSES 6 SWEEPS 7 TIMING 8 TEST LINES 9 OTHERS CHARTS KM ETTEDTES3 3
19. 0 0mV div and reference levels indicated in this example as 100 0mV 50 0 0 0 Space C1 C2 Pressing the space bar allows the two phases of a colour signal to be viewed This is a toggle function Q Quit Pressing the Q key quits or exits the program Markers M On Off Hold When the M key is pressed once On cursor markers are provided on the screen Two markers appear in both the vertical and horizontal planes one a broken line reference and one continuous line measurement When pressed for a second time hold the positions of the markers are fixed Pressing the key a third time turns the markers Off End One of the pair of markers or cursors may be moved over the display area by means of the up down left right keys in steps or continuously when held down Pressing the End key enables the other marker to be moved This key has a toggle action T dt freg Pressing the T key enables the distance between the two vertical markers to be expressed as either a time difference dt or as a frequency and the value ns is given in the Marker box The value in us shown in the Marker box gives the time position of the reference marker line This key has a toggle action The horizontal markers may be used to measure the amplitude of any part of the waveform The markers should be positioned by means of the up down left right keys The reference marker amplitude is given in the upper marker box in mV and the difference value given as Delta mV
20. 00ns The reason for this phenomenon is explained as follows In the TPG20 the above mentioned line based patterns are produced by combining two separate waveforms One waveform is a standard black burst signal generated as a full frame of non orthogonal PAL The other waveform pattern signal is generated as a single line of orthogonal PAL and is overlaid over the black burst waveform It is this difference in signal generation that produces the jitter shown above The pattern signal could be generated as a full frame of non orthogonal PAL but would consume vast quantities of ROM storage space as a full frame of memory would be required for each and every pattern It should be noted that there are two patterns available from the TPG which are generated as a full frame of non orthogonal PAL These are S amp W Test Pattern No 2 and S amp W Test Pattern No 3 To view a picture edge generated as orthogonal PAL without displayed jitter two methods may be used 1 Trigger the oscilloscope with line trigger from the TPG as this signal is timed to the picture information Jitter will now be seen on the black burst part of the waveform 2 Internally trigger the oscilloscope to field sync and use the oscilloscope delay function to display a single line TPG200PS030497 Version 2 Issue 1 5 SNELL amp WILCOX 4 34 TPG20 SECTION 4 Pattern Information A more detailed explanation now follows NON ORTHOGONAL PAL
21. 0497 Version 2 Issue 1 b SNELL amp WILCOX 3 9 TPG20 SECTION 3 GENLOCK FACILITIES REFERENCE on 2 3 1 GENLOCK MOVEMENT Note that when the unit is not receiving an external SZ OFF O O EE 4 reference signal the unit will be locked to an internal GENLOCKED SC PHASE high stability crystal source if fitted and the ND o N Pras REFERENCE V PHASE REFERENCE LED will be illuminated if an 8 appropriate Reference crystal is fitted Sa s ON OFF When it is required to genlock the unit to an external reference the appropriate reference signal should be connected to the REFERENCE INPUT see Section 3 INPUT CONNECTIONS The GENLOCK ON OFF button should then be pushed and the LED in this button will then be EN 6 illuminated A N TE LOCKED SC PHASE A DE SN Ny If a composite pattern has been selected the display gt REFE window will offer the options of either SC subcarrier lock or SYNC lock and these options may be selected by rotating the CRK If a component pattern has been selected the display window will offer SYNC lock only If a composite pattern has been selected the SC lock option should normally be selected as this will give the most accurate lock with minimum jitter The unit will then genlock to the reference input vertical sync horizontal sync subcarrier frequency phase and also to the colour framing sequence This assumes that the refe
22. 1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D1 10 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 625 D110 BIT 625 D110 BIT 625 D110 BIT 625 D110 BIT 625 D1 YPrPb 625 D110 BIT 4 2 TPG20 SECTION 4 Pattern Information 625YPrPb BARS TIMING 00 EBU COLOUR BARS 100 0 75 0 625 YPrPb 00 BOWTIE 5ns RES 625 YPrPb 01 100 COLOUR BARS 100 0 100 0 625 YPrPb 01 SQUARE FIELD 625 YPrPb 02 EBU BARS amp RED 100 0 75 0 625 YPrPb 03 EBU SPLIT BARS 100 0 75 0 625 YPrPb OTHERS 04 BETACAM BARS 75 100 0 75 0 625 YPrPb 05 TARTAN BARS 75 0 75 0 625 YPrPb 00 LUMA CORING 625 YPrPb 06 VIDIPLEX BARS 100 0 75 0 625 YPrPb 01 UV CORING 625 YPrPb 07 75 HORZ BARS 75 0 75 0 625 YPrPb 02 AUTO TEST MATRIX 625 YPrPb 08 100 HORZ BARS 100 0 100 0 625 YPrPb FLAT FIELDS 00 BLACK 625 YPrPb 01 WHITE 100 625 YPrPb 02 GREY 50 625 YPrPb 03 YELLOW 75 625 YPrPb 04 CYAN 75 625 YPrPb 05 GREEN 75 625 YPrPb 06 MAGENTA 75 625 YPrPb 07 RED 75 625 YPrPb 08 BLUE 75 625 YPrPb MONITOR SET UP 00 CROSS HATCH 625 YPrPb 01 CROSS H
23. 2 test chart The composite PAL waveform is generated using 10 bit quantisation giving 588 levels from black to white Sync level is 4 300 mV black is 256 0 mV white is 844 700 mV The chart background grey level is 548 347 6 mV If not otherwise specified all lines bursts and other chart components mentioned in this document are 100 contrast covering full range from black to white The rectangular black grid is superimposed over the grey background The purpose of this grid is mainly for a fast visual check of the display device geometry Three primary colour rasters for registration checks Vertical and horizontal lines of the grid have sine squared waveform shape with equal width along the TV line they form 2T pulses 200 ns HAD Geometry also can be evaluated using the black circle with the diameter equal to the picture height Circumference line width is 168 ns TPG200PS030497 Version 2 Issue 1 KM SNELL amp WILCOX JO 4 25 TPG20 SECTION 4 Pattern Information DETAILED DESCRIPTION BOUNDARIES Top and bottom boundaries of the active part are designated by four white triangular markers on black boxes TARTAN BARS These are 75 tartan colour bars The purpose of this test pattern is to measure the chroma sharpness both horizontally and vertically it shows the comb type Y C separators failure on sharp vertical transients Below the tartan bars is a grey scale with 20 40 60 and 80 levels useful
24. 25 D1 YPrPb 06 MAGENTA 75 525 D1 YPrPb TIMING 07 RED 75 525 D1 YPrPb 08 BLUE 75 525 D1 YPrPb 00 BOWTIE ins RES 525 D1 YPrPb 01 BOWTIE 1ns RES 525 D1 10 BIT MONITOR SET UP 02 BOWTIE 5ns RES 525 D1 YPrPb 03 BOWTIE 5ns RES 525 D1 10 BIT 00 CROSS HATCH 525 D1 YPrPb 01 CROSS HATCH DOTS 525 D1 YPrPb TEST LINES 02 CROSS HATCH MRKR 525 D1 YPrPb 03 BLK CROSS HATCH 525 D1 YPrPb 00 NTC 7 COMPOSITE 525 D1 YPrPb 04 BLK CRS HTH DOTS 525 D1 YPrPb 01 NTC 7 COMPOSITE 525 D1 10 BIT 05 BLK CRS HTH MRKR 525 D1 YPrPb 02 NTC 7 COMBINAT N 525 D1 YPrPb 06 CROSS MATRIX 525 D1 YPrPb 03 NTC 7 COMBINAT N 525 D1 10 BIT 07 100 WINDOW 525 D1 YPrPb 04 FCC COMPOSITE 525 D1 YPrPb 08 50 WINDOW 525 D1 YPrPb 05 FCC COMPOSITE 525 D1 10 BIT 09 15 WINDOW 525 D1 YPrPb 06 FCC MULTIBURST 525 D1 YPrPb 07 FCC MULTIBURST 525 D1 10 BIT LINEARITY 08 VIRS 525 D1 YPrPb 09 VIRS 525 D1 10 BIT 00 RAMP 100 525 D1 YPrPb 01 RAMP 100 525 D110 BIT OTHERS 02 RAMP 115 525 D110 BIT 03 MODULATED RAMP 525 D1 YPrPb 00 LUMA CORING 525 D1 YPrPb 04 MODULATED RAMP 525 D110 BIT 01 UV CORING 525 D1 YPrPb 05 ULTRABLACK RAMP 525 D110 BIT 02 SDI EQU TEST 525 D1 10 BIT 06 SHALLOW RAMPS 525 D1 YPrPb 03 SDI PLL TEST 525 D1 10 BIT 07 SHALLOW RAMPS 525 D110 BIT 04 SDI CHECK FIELD 525 D1 10 BIT 08 VALID RAMP 525 D1 YPrPb 05 BLANKING TEST 525 D1 10 BIT 09 VALID RAMP 525 D110 BIT 06 AUTO TEST MATRIX 525 D1 YPrPb 10 STAIRCASE 5 525 D1 YPrPb 07 AUTO TEST MATRIX 525 D1 10 BIT 11 STAIR
25. 25 NTSC D2 07 STREAK TEST 525 NTSC D2 08 50 WINDOW 525 NTSC D2 09 15 WINDOW 525 NTSC D2 TPG200PS030497 Version 2 Issue 1 KD ETETTCS3 4 6 TPG20 Pattern Information BARS 00 SMPTE COLOR BARS 100 0 75 0 525 D1 YPrPb PULSES 01 SMPTE COLOR BARS 100 0 75 0 525 D110 BIT 02 FULL FIELD BARS 100 0 75 0 525 D1 YPrPb 00 PULSE 4 BAR 2T 525 D1 YPrPb 03 FULL FIELD BARS 100 0 75 0 525 D110 BIT 01 PULSE amp BAR 2T 525 D1 10 BIT 04 100 COLOR BARS 100 0 100 0 525 D1 YPrPb 02 PULSE BAR 2T 4T 10T 525 D1 YPrPb 05 100 COLOR BARS 100 0 100 0 525 D110 BIT 03 PULSE BAR 2T 4T 10T 525 D1 10BIT 06 EBU BARS amp RED 100 0 75 0 525 D1 YPrPb 04 SIN X X 525 D1 YPrPb 07 EBU BARS amp RED 100 0 75 0 525 D110 BIT 05 SIN X X 525 D1 10 BIT 08 EBU SPLIT BARS 100 0 75 0 525 D1 YPrPb 06 MULTI PULSE 4 2 525 D1 YPrPb 09 TARTAN BARS 75 0 75 0 525 D1 YPrPb 07 MULTI PULSE 4 2 525 D1 10 BIT 10 VIDIPLEX BARS 100 0 75 0 525 D1 YPrPb 11 75 HORZ BARS 75 0 75 0 525 D1 YPrPb SWEEPS 12 100 HORZ BARS 100 0 100 0 525 D1 YPrPb 00 MULTI BURST 5 8 525 D1 YPrPb FLAT FIELDS 01 MULTI BURST 5 8 525 D1 10 BIT 02 MULTI BURST 4 2 525 D1 YPrPb 00 BLACK 525 D1 YPrPb 03 MULTI BURST 4 2 525 D1 10 BIT 01 WHITE 100 525 D1 YPrPb 04 HORZ MULTIBURST 525 D1 YPrPb 02 GREY 50 525 D1 YPrPb 05 HORZ MULTIBURST 525 D1 10 BIT 03 YELLOW 75 525D1 YPrPb 06 SWEEP 5 5 2 75 525 D1 YPrPb 04 CYAN 75 525 D1 YPrPb 07 SWEEP 5 5 2 75 525 D1 10 BIT 05 GREEN 75 5
26. 25 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM KI SNELL amp WILCOX oe SECTION 4 4 5 TPG20 Pattern Information SECTION 4 525NTSC D2 BARS LINEARITY 00 SMPTE COLOR BARS 100 7 5 75 7 5 525 NTSC D2 00 RAMP 100 525 NTSC D2 01 SMPTE BARS 0 Set up 100 0 75 0 525NTSC D2 01 RAMP 120 525 NTSC D2 02 FULL FIELD BARS 100 7 5 75 7 5 525 NTSC D2 02 MODULATED RAMP 525 NTSC D2 03 F FIELD BARS 0 Set up 100 0 75 0 525 NTSC D2 03 ULTRABLACK RAMP 525 NTSC D2 04 100 COLOR BARS 100 7 5 100 7 5 525NTSC D2 04 SHALLOW RAMPS 525 NTSC D2 05 100 BARS 0 Set up 100 0 75 0 525 NTSC D2 05 VALID RAMP 525 NTSC D2 06 BARS amp RED 100 7 5 75 7 5 525 NTSC D2 06 STAIRCASE 5 525 NTSC D2 07 BARS amp RED 0 Set up 100 0 75 0 525 NTSC D2 07 STAIRCASE 10 525 NTSC D2 08 SPLIT BARS 100 7 5 75 7 5 525 NTSC D2 08 MOD STAIRCASE 5 525 NTSC D2 09 SPLIT BARS 0 Set up 100 0 75 0 525 NTSC D2 10 TARTAN BARS 75 7 5 75 7 5 525 NTSC D2 PULSES 11 TARTAN BARS 0 Set up 75 0 75 0 525 NTSC D2 12 75 HORZ BARS 75 7 5 75 7 5 525 NTSC D2 00 PULSE amp BAR 2T 525 NTSC D2 13 75 HZ BARS 0 Set up 75 0 75 0 525 NTSC D2 01 SIN X X 525 NTSC D2 14 100 HORZ BARS 100 7 5 100 7 5 525 NTSC D2 02 MULTI PULSE 5 8 525 NTSC D2 15 100 HZ BARS 0 Set up 100 0 100 0 525 NTSC D2 03 MULTI PULSE 4 2 525 NTSC D2 16 VIDIPLEX BARS 100 7 5 75 7
27. 3 19 TPG20 SECTION 3 nnn is the internal index number of the pattern shown on bottom right of front panel display For example To load 625 RGB EBU colours bars the command sequence would be lt ESC gt L3100 lt RETURN gt 15 lt ESC gt I n lt RETURN gt Sets gain level where n is a 0 to 4095 This sets the gain of the current frame In calibration mode this command can be used to set the default calibration levels 16 lt ESC gt A n sss xxx lt RETURN gt This starts a read sequence from a ROM device n defines the slot number 0 4 sss defines the packet size 128 256 or 512 and xxx defines the number of bytes to read Note that the number of bytes to read must be exactly divisible by the packet size Binary data of exactly the defined packet size is returned by the TPG with no headers 17 lt ESC a lt RETURN gt This command prompts for the next read packet Binary data of exactly the defined packet size is returned by the TPG with no headers The TPG sends OK lt RETURN gt to signify end of read data 18 lt ESC gt N x lt RETURN gt This command is used to retrieve the pattern listing from a PROM slot x defines the slot 0 4 The returned data takes the form F G XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX lt RETURN gt where F is the format number 0 F G is the group number 0 9 and XXX is the 32 character pattern title 19 lt ESC gt n lt RETURN gt This prompts for
28. 97 Version 2 Issue 1 6 SNELL amp WILCOX fo 6 1 TPG20 SECTION 6 TO REMOVE THE COOLING FAN 1 Remove the top cover of the unit 2 Remove the two PCB retaining screws located in the bottom panel 3 Remove the PCB using the card ejectors 4 Unplug the fan connector cable 5 Remove the four M4 nuts and bolts securing the fan 6 Withdraw the fan unit NOTE When refitting the fan ensure that it is fitted such that the airflow is from inside the unit to the outside i e air is sucked out of the unit TO REMOVE THE REAR BACKPLANE ASSEMBLY 1 Remove the fan assembly as detailed above 2 Unplug the white Power Supply Module connector 3 Remove the external backplane fixing screws 5 pieces M2 5 4 Remove the right hand rear white plastic PCB runner Use a flat metal tool e g screwdriver to lever off the runner The runner is fixed to the metalwork by 2 lugs 5 The complete backplane assembly may now be withdrawn from the unit
29. ATCH DOTS 625 YPrPb 02 BLK CROSS HATCH 625 YPrPb 03 BLK CRS HTH DOTS 625 YPrPb 04 CROSS MATRIX 625 YPrPb LINEARITY 00 RAMP 100 625 YPrPb 01 RAMP 120 625 YPrPb 02 SHALLOW RAMPS 625 YPrPb 03 VALID RAMP 625 YPrPb 04 STAIRCASE 5 625 YPrPb 05 STAIRCASE 10 625 YPrPb PULSES 00 PULSE amp BAR 2T 625 YPrPb 01 PULSE amp BAR 2T 4T 8T 625 YPrPb 02 PULSE BAR 2T 4T 10T 625 YPrPb 03 SIN X X 625 YPrPb 04 MULTI PULSE 5 8 625 YPrPb SWEEPS 00 MULTI BURST 5 8 625 YPrPb 01 HORZ MULTIBURST 625 YPrPb 02 SWEEP 5 5 2 75 625 YPrPb 03 SWEEP 8 0 4 0 625 YPrPb 1PG200PS030497 Version 2 Issue 1 KM SNELL amp WILCOX TPG20 Pattern Information BARS 00 EBU COLOUR BARS 100 0 75 0 01 EBU BARS NOSYNC 100 0 75 0 02 100 COLOUR BARS 100 0 100 0 03 EBU BARS amp RED 100 0 75 0 04 EBU SPLIT BARS 100 0 75 0 05 TARTAN BARS 75 0 75 0 06 VIDIPLEX BARS 100 0 75 0 07 75 HORZ BARS 75 0 75 0 08 100 HORZ BARS 100 0 100 0 FLAT FIELDS 00 BLACK 01 WHITE 100 02 GR Y 50 03 YELLOW 75 04 CYAN 75 05 GREEN 75 06 MAGENTA 75 07 RED 75 08 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 CROSS HATCH DOTS 02 BLK CROSS HATCH 03 BLK CRS HTH DOTS 04 CROSS MATRIX 05 GAMMA TEST 06 EBU PLUGE 1 5 LINEARITY 00 RAMP 100 01 SHALLOW RAMPS 02 VALID RAMP 03 STAIRCASE 5 04 STAIRCASE 10 PULSES 00 PULSE amp BAR 2T 01 SIN X X 02 MULTIPULSE 5 8 SWEEPS 00 MULTI BURST 5 8 01 HORZ MULTIB
30. B 01 HORZ MULTIBURST 525 RGB 02 LINE SWEEP 5 5 525 RGB 525 RGB TIMING 525 RGB 525 RGB 00 SQUARE FIELD OTHERS 525 RGB 00 COMBINATION TEST 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB SNELL amp WILCOX JO SECTION 4 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 525 RGB 4 9 TPG20 SECTION 4 Pattern Information Descriptions for some of the various patterns that are available in the TPG EBU Colour bars All 625 and 525 component signals 100 700mV pk luma 75 chroma NTSC 100 714mV pk luma 75 chroma BBC colour bars 625 formats only 100 700mv pk luma 95 chroma Tartan bars All formats 75 525mv pk luma 75 chroma Vidiplex bars All formats Field one EBU bars Field two inverse EBU bars 75 Horizontal bars All formats 75 pk luma 75 chroma 8 Colours from white to black 100 Horizontal bars Selected formats 100 pk luma 100 chroma 8 Colours from white to black Ramp 100 All formats 100 luminance ramp 0 chroma Ramp 120 Selected formats Luminance ramp from 10 to 110 0 chroma Modulated ramp 625 formats 100 luminance ramp 284 mV pk pk modulated sub carrier 525 formats 100 luminance ramp 286 mV pk pk modulated sub carrier Ultra black modulated ramp Selected formats 10 70mV to 100 700mV luminance ramp 140 mV pk pk chroma NTSC format
31. CASE 5 525 D110 BIT 12 STAIRCASE 10 525 D1 YPrPb 13 STAIRCASE 10 525 D110 BIT 14 MOD STAIRCASE 5 525 D1 YPrPb TPG200PS030497 Version 2 Issue 1 KM ETENTCES3 4 7 Note that all 10 bit patterns have embeded EDH codes SECTION 4 525D1YPrPb 15 MOD STAIRCASE 5 525 D1 10 BIT TPG20 SECTION 4 Pattern Information BARS 00 FULL FIELD BARS 100 0 75 0 01 100 COLOR BARS 100 0 100 0 02 EBU BARS amp RED 100 0 75 0 03 BETACAM BARS 75 100 7 5 75 7 5 04 MII BARS 100 100 7 5 100 7 5 05 MII BARS 75 100 7 5 75 7 5 06 EBU SPLIT BARS 100 0 75 0 07 TARTAN BARS 1 75 0 75 0 08 VIDIPLEX BARS 100 0 75 0 e 09 75 HORZ BARS 75 0 75 0 10 100 HORZ BARS 100 0 100 0 FLAT FIELDS 00 BLACK 01 WHITE 100 02 GREY 50 03 YELLOW 75 04 CYAN 75 05 GREEN 75 06 MAGENTA 75 07 RED 75 08 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 CROSS HATCH DOTS 02 CROSS HATCH MRKR 03 BLK CROSS HATCH 04 BLK CRS HTH DOTS 05 BLK CRS HTH MRKR 06 CROSS MATRIX LINEARITY 00 RAMP 100 01 RAMP 120 02 SHALLOW RAMPS 03 VALID RAMP 04 STAIRCASE 5 05 STAIRCASE 10 PULSES 00 PULSE amp BAR 2T 01 PULSE BAR 2T 4T 10T 02 SIN X X 03 MULTI PULSE 4 2 TPG200PS030497 Version 2 Issue 1 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525 YPrPb 525
32. LECT button may then be pressed and the desired trigger pulse will appear at the Trigger Pulse connector TPG200PS030497 Version 2 Issue 1 DETTE 3 8 TPG20 SECTION 3 GAIN This function allows the overall amplitude of all the generated ANALOGUE signals to be changed from standard level OdB to the level desired For example if the OdB level for a particular pattern is 1V p p 0 7V video and 0 3V syncs and the GAIN function is reset to 6dB the output signal amplitude will become 0 5V p p 0 35V video and 0 15v syncs To enable this function the GAIN button should be pressed and the button will be illuminated The LCD will then show the output level in dB e g GAIN 0 0dB To change the output level the CRK should be rotated until the desired output level is displayed The level now set will be the new amplitude of the output signal The gain setting will change in 0 1dB steps as the CRK is rotated with limits of 20dB to 3db When the desired setting is reached it may be stored by pressing the SELECT button Note that when the GAIN is changed from the default condition OdB the UNCAL LED next to the GAIN button will become illuminated to indicate that the unit is in the UNCALibrated mode To return to the OdB setting the GAIN button should be pressed twice 3 4 5 6 7 MOVEMENT OUTPUT GAIN FORMAT PATTERN O Oo 0 0 Ae Ne ene PAUSE BOUNCE Test Pattern Genet ee TPG200PS03
33. MPOSITE Y C Waveforms Line Period Front Porch Line Blanking Burst Start _ Line Syncs Line Period 64us 15 625kHz Line rate Line Blanking 12 00us Line Syncs 4 705 Line Front Porch 1 50us 1 65us for PAL I Line Back Porch 5 8us 5 65us for PAL I Burst Start 5 64us Burst Duration 2 25us 10 cycles of SC Burst Amplitude 300mV 1 Broad Pulses p Field Blanking Equalising m Pulses White Level Peak White Amplitude Sync Amplitude Sync Level Subcarrier Frequency 4 43361875MHz 1Hz When fitted with 0 2ppm crystal Subcarrier Calculation 283 75fh 25Hz Sync Amplitude 300mV 1 Peak White Amplitude 700mV 1 Rise and Fall Times Line Syncs 200ns 10 to 90 250ns 10 to 90 for PAL I Line 1 Beginning of First Field Even Number of Lines 625 Field Period 20ms 50Hz Pre equalising Pulses 5 at 2fh 2 35us wide Post equalising Pulses 5 at 2fh 2 35us wide Broad Pulses 5 at 2fh 27 3us wide Field Blanking Rise and Fall Times Equalising Pulses 25 lines 128 200ns 10 to 90 250ns 10 to 90 for PAL I Note that only some patterns have video half lines as shown above TPG200PS030497 Version 2 Issue 1 snett amp wiLcox 4 13 TPG20 SECTION 4 Pattern Information NTSC 525 COMPOSITE Y C Waveforms Line Period White Level Front Porch Line Blanking Peak White Level Burst Duration Set up T Blanking Level suste
34. Marker Mode This text indicates the state of the marker mode set by the M key TPG200PS030497 Version 2 Issue 1 A Extasy fo 5 5 TPG20 SECTION 5 Waveform View Program Facility Fs The number following the letters Fs indicates the sampling rate in MHz Ns The number following the letters Ns indicates the number of samples per line Sample us These figures show the time position calibrated in either microseconds or the line sample number Dec The value in the box is the decimal digital value of the amplitude of the waveform at the centre of the graticule Hex The value in the box is the value in Hexadecimal of the amplitude of the waveform at the centre of the graticule Note that the figure given between the Dec and Hex value is the value in millivolts of the amplitude of the waveform at the centre of the graticule F When this key is pressed a half sample rate filter is applied to the waveform This key has a toggle on off action NOTE that the filter may only be enabled when the expansion ratio shown in a box as 2 1 in this example is 5 1 or greater END TPG200PS030497 Version 2 Issue 1 DD ETETE 5 6 TPG20 SECTION 6 ist LINE MAINTENANCE In the unlikely event of this unit failing to operate correctly no attempt should be made to repair the unit unless all the necessary test equipment service manuals and technical expertise is available and permission has been granted in writing by Snell amp Wil
35. P L283 SMPTE1L LCP 284 445 SMPTE1 LCP L 446 464 SMPTE2 LCP L 465 525 SMPTE3 LCP This list shows all the files required to make the pattern SMPTE COLOR BARS 525 NTSC D2 with the exception of the basic black signal The section of the pattern we require to view the super black section is known to be in the lower section of the picture so by inspecting the list of files it can be seen that the file L 465 525 SMPTE3 LCP represents this part of the pattern TPG200PS030497 Version 2 Issue 1 HESTENE 5 2 TPG20 SECTION 5 Waveform View Program Facility A note should now be made of this file name SMPTE3 LCP Next EXIT the ASCII text viewing program Note To avoid repetition waveforms are divided into their basic sections followed by specific details for particular parts of the waveform For example all waveforms in the 525 NTSC format are composed of file names specifying standard mixed synchronising pulses and colour burst This represents the basic section i e Black and will be common to all waveforms in this format The group file names which then follow specify the actual pattern produced in addition to black File Name String Explanation Example L 465 525 SMPTE3 LCP L refers to the line numbers in the brackets a single line will not have brackets 465 525 refers to line numbers between and including 465 and 525 The file name after the equals sign is the file used to define the characteristics of the lin
36. S030497 Version 2 Issue 1 snNeLL amp 9 4 15 TPG20 SECTION 4 Pattern Information SECAM 625 Line Period Line Blanking Line Syncs Line Front Porch Line Back Porch SC Start SC Start Duration SC Amplitude unmodulated Number of Lines Field Period Pre equalising Pulses Line Period Front Porch Line Blanking Burst Start Line Syncs Back Porch 64us 15 625kHz Line rate 12 00us 4 7Us 1 50us 5 88 5 68 2 25us 10 cycles of SC 168mV 1 Db 211mV 1 Dr p Field Blanking Equalising Pulses Equalising Pulses Ng Broad Pulses quansing D D R B Line 1 Beginning of First Field 625 20ms 50Hz 5 at 2fh 2 35us wide Post equalising Pulses 5 at 2fh 2 35us wide Broad Pulses 5 at 2fh 27 3us wide White Level Peak White Amplitude Blanking Black Level Sync Amplitude Sync Level Subcarrier Frequency Subcarrier Calculation Sync Amplitude Peak White Amplitude Rise and Fall Times Line Syncs These Waveforms Commonly Known as Bottles Amplitude 540mV p p Dp Amplitude 500mV p p Field Blanking Rise and Fall Times Equalising Pulses 4 43361875MHz 1Hz With 0 2ppm crystal 272fh Db 4 25000MHz 282th Dr 4 40625MHz 300mV 1 700mV 1 200ns 10 to 90 Dg DR Line 3 Line 23 Line 15 25 lines 12 0us 200ns 10 to 90 Note that only some patterns have video hal
37. T Search for Format Step 2 EL 625 50 COMPOSITE PAL D2 Groups BARS SELECT Search for or Group PATTERN U AJ Step 3 EBU COLOUR BARS 00 SELECT Search for or Pattern PATTERN Step 4 The desired pattern will be loaded SELECT TPG200PS030497 Version 2 Issue 1 f sNeLL amp wiLcox 3 5 TPG20 SECTION 3 DETAILED PROCEDURE FOR SELECTING A PARTICULAR PATTERN FORMAT select 1 O This button allows the FORMAT of the pattern to be PAL D2 set FORMAT Search for Format When this button is pressed it will become illuminated green and the LCD will display the current pattern format e g 625 50 etc The CRK may now be rotated and the LCD will show alternative formats e g 625 D1 SECAM Y C etc and should be left showing the desired format PATTERN SELECT AR Oo O Either the PATTERN or SELECT button may be SELECT Search for pressed and the LCD window will display the GROUP of patterns available or Group PATTERN GROUP By rotating the CRK the various groups may be displayed BARS FLAT FIELDS MONITOR SETUP LINEARITY PULSES SWEEPS TIMINGS TEST LINES OTHERS Either the PATTERN or SELECT button should be EA pressed andthe type of pattern and its assigned 0 number will be shown in the LCD SELECT ot e g EBU COLOUR BARS Patt 625 50 PAL D2 00 PATTERN mA EBU COLOUR BARS 625 PAL D2 00 gt The CRK may now be ro
38. TPG20 SECTION 3 FURTHER NOTES CONCERNING GENLOCK OPERATION ScH Relationship The output signal of the TPG will always have a O ScH relationship i e the first cycle of extrapolated subcarrier in the first field of the 8 field sequence will start to rise from zero after an integer number of cycles of subcarrier from the HAD point of the leading edge of the horizontal sync pulse This condition will be true even when the unit is genlocked to a reference signal that has a ScH relationship other than 0 Genlocking When the TPG is asked to genlock to a reference signal in the SC LOCK mode the system computes the reference signal colour framing sequence based on the ScH definition given above and uses this information to set the output signal colour framing sequence Output colour framing will always be correct regardless of the input ScH relationship However if the reference input ScH relationship is close to 90 or 90 the unit will experience difficulty computing the colour framing sequence and a reference to output signal colour framing error may occur The output signal will maintain a correct colour framing sequence even under these conditions When considering the subcarrier genlock functions it may be helpful to consider the genlock variables in terms of coarse and fine as opposed to degrees of subcarrier us and lines If the subcarrier phase is altered the horizontal position will alter as a consequence ultimately changing
39. TPG20 SECTION 4 Pattern Information Now consider the generation of a line based signal i e a pattern that has the same picture information on all lines of the frame If there were an integer number of samples during each line a single line representing the pattern could be stored within a ROM and read out for all other lines as the sampling point will occur at exactly the same time for every line when measured from a datum point e g a sync edge However in non orthogonal PAL there are not an integer number of samples during each line and if a single line representing the pattern was stored within a ROM and read out for all other lines the sampling points would not be coincident with the same point in the pattern This would result in the waveform being sampled at a slightly different earlier point on each line This effect would be seen on a monitor display as a vertical line of a pattern being skewed slightly to the right at the bottom of the picture Also when the wave form is displayed on an oscilloscope at line rate all lines overlaid the edge will show a horizontal jitter component equivalent to the shift in the timing of the edge during the period of a frame To avoid this effect every line in the frame could be generated such that the same point in the waveform would be coincident with a sample point however this would mean that every line would have a different timing and would require a large amount of memory to store
40. Type 20 4 1 Descriptions of Patterns rrnrrnrrrrnnrnrnnnrersnnernnsrerssnsnsnnnnnnnnerrsennnnnnssesensnnnnnnnnnresnsanssnsssnnnnns 4 10 Generalised Parameters of Waveforms sssssssssssccecssssssscsecensssseeacececeseeseseacenecseseucess 4 12 Specific Parameters of Waveforms ccssssssescccccceecsscnssscsssssssascccessessecceccsscsessesssssessesens 4 17 Important Information regarding PAL D2 and PAL N formats cccccscsssssssseceeeeeeeeeeeees 4 34 5 Waveform View Program Facility rrnrrrrronernnnnnvnnnnnnnnnvnvnvennrnnnnrnnsnnnvnnnnennenennensenevenennneesene 5 1 6 ist Line Maintenance ssssccccccssssssssssescceccceessssseseveceececesssecesscecesccecseececcesecesecceeseeeaeas 6 1 TPG200PS080797 Version 2 Issue 4 View Program V1 0 TPG V11 1 0 5 Manual Revision Record EE T noga EE 0 2 New warnings page added 260697 2 1 3 3 View program version No added New section 0 issued 080797 0 4 Cable added to packing list amp New section 0 issued TPG Software Version No added Pages 3 1 3 18 and 3 19 issued 3 1 25 way cable data added Version 2 Issue 2 3 18 Baud rate 19 200 added 3 19 Default Baud rate 19 200 TPG200PS080797 Version 2 Issue 4 KI ETTENDTCE J View Program V1 0 TPG V11 1 0 6 TPG20 Description amp Features The TPG20 provides a complete source of digital
41. URST 02 LINE SWEEP 8 0 TIMING 00 SQUARE FIELD 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB 625 RGB SECTION 4 TEST LINES 00 VITS 17 NOSYNC 625 RGB OTHERS 00 COMBINATION TEST 625 RGB TPG200PS030497 Version 2 Issue 1 MM EEE 9 4 4 TPG20 Pattern Information BARS 00 EBU COLOUR BARS 100 0 75 0 01 EBU BARS BOT S 100 0 75 0 02 100 COLOUR BARS 100 0 100 0 03 100 BARS BOT S 100 0 100 0 04 EBU BARS amp RED 100 0 75 0 05 EBU BARS RED BOT 100 0 75 0 06 EBU SPLIT BARS 100 0 75 0 07 TARTAN BARS 75 0 75 0 08 25 COLOUR BARS 09 75 HORZ BARS 10 SATURATION TEST FLAT FIELDS 00 BLACK 01 WHITE 100 02 GREY 50 03 YELLOW 75 04 CYAN 75 05 GREEN 75 06 MAGENTA 75 07 RED 75 08 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 BLK CROSS HATCH LINEARITY 00 RAMP 100 01 STAIRCASE 5 SWEEPS 00 LINE SWEEP 3 5 OTHERS 00 RED CYAN RAINBOW 01 BLUE YEL RAINBOW 02 MIXED RAINBOWS 03 COMBINATION TEST TPG200PS030497 Version 2 Issue 1 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 625 SECAM 6
42. User Manual Tektronix TPG 20 21 Test Pattern Generator SN GB20478 amp Above 070 8938 02 First Edition July 1997 Last Revised February 1998 Copyright Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service c
43. V luminance 420mV pk pk chroma sweep from 2 4MHz to 6 43 MHz NTSC format 428mV luminance 428mV pk pk chroma sweep from 1 58 to 5 58MHz Multipulse 5 8 Selected formats 100 white bar 100 2 T pulse pulses at 1 2 4 4 8 5 8MHz 0 chroma Colour multipulse PAL format 100 white bar 100 2 T pulse colour pulses luma amplitude 350mv Pulse frequencies at 3 184 3 496 3 809 4 121 4 434 4 746 5 059 5 371 and 5 684 MHz NTSC format Pulse and bar 2T All formats White bar 100 2 T pulses 0 chroma Sin X X All formats Luma amplitude 700mV VITS 17 625 formats 100 white bar 2 T pulse modulated pulse 700mV pk pk 5 step staircase VITS 18 625 formats bursts at 0 5 1 2 4 4 8 5 8 MHz UK ITS 19 625 formats 100 white bar 2 T pulse modulated pulse 700mV pk pk 5 step modulated staircase UK ITS 20 625 formats 700mV pk pk PAL sub carrier on 50 luma level 300mV pk pk PAL sub carrier on black level VITS 330 625 formats 100 white bar 2 T pulse modulated PAL sub carrier on 5 step staircase VITS 331 625 formats 50 grey luma 140mV 420mV and 700mV PAL sub carrier on chroma Zero R Y colours PAL format 50 grey luma 300mV pk pk PAL sub carrier phases at 270 and 90 degrees Zero G Y colours PAL format 50 grey luma 300mV pk pk PAL sub carrier phases at 326 and 146 degrees Zero B Y colours PAL format 50 grey luma 300mV pk pk PAL sub carrier phases at 0 and 180 degrees Cross hat
44. Y VERTICAL RESPONSE CHECK This section contains slightly oblique bursts almost horizontals with frequencies 100 200 and 300 tvl They are useful for testing scan converters and vertical enhancers FREQUENCY RESPONSE WEDGE This wedge covers the band from 1 5 MHz to 5 5 MHz TPG200PS030497 Version 2 Issue 1 AEETIS 4 27 TPG20 SECTION 4 Pattern Information SECAM BELL FILTER CHECK This area contains a 4 286 MHz burst SECAM bell filter centre frequency RADIAL WEDGE This radial wedge covers spatial frequencies up to 200 tvi It shows decoding cross effects and horizontal vertical enhancement proportion MOVING ZONE PLATE This area is occupied by a static or moving circular grating Fresnel zone plate covering spatial frequencies range up to 429 tvl 5 5 MHz The radius of this grating is 0 15 of picture height The moving zone plate is especially useful for checking line or frame based comb decoders and scan converters performance Movement type and speed may be set using the MOVEMENT control function described in Operation Section 3 CHROMA FREQUENCY RESPONSE Y C TIMING CHECKS This area contains blue yellow and green magenta bursts with frequencies 1 0 0 5 and 1 5 MHz They are useful for chroma resolution and Y C timing tests TPG200PS030497 Version 2 Issue 1 DETTE TPG2 SECTION 4 Pattern Information PLUGE Picture Line Up Generator Area 3 4 6 contain PLUGE sig
45. all lines in a frame For this reason only two non orthogonal patterns are generated in the TPG and all other line based patterns are generated in orthogonal PAL it should be remembered as mentioned previously that the black burst part of all waveforms in the TPG is generated as non orthogonal PAL it is only the pattern information that is generated as orthogonal PAL TPG200PS030497 Version 2 Issue 1 HENTA 4 36 TPG20 SECTION 5 Waveform View Program Facility GENERAL INFORMATION To allow all parameter details timings amplitudes etc of the waveforms produced by the test pattern generator to be found a floppy disk is provided with this manual which contains detailed information of all the waveforms and patterns available from the unit INSTALLATION The program may be run on any IBM compatible P C with a colour VGA monitor Approximately 2 Megabytes of free hard disk space will be required To install the disk proceed as follows Place the disk in the floppy disk drive e g A Change the drive to A by typing A lt return gt Now type INSTALL C lt return gt where C refers to the computer Hard Disk Drive All files will then be copied into a directory C TPG TPG200PS030497 Version 2 Issue 1 A ETTENTES3 fo 5 1 TPG20 SECTION 5 Waveform View Program Facility BACKGROUND INFORMATION All waveforms and signal patterns produced by the test pattern generator are generated by the summation of various combinations
46. ameters the button marked SC PHASE H PHASE V PHASE should be pressed and will become illuminated When the button is pressed for the first time this will allow the Subcarrier phasing between the reference and the output to be changed and the LCD will show SC Phase 0 in degrees normal default setting to change default settings see SYSTEM setup The CRK can now be rotated until the desired setting shown in degrees is displayed or the desired result is obtained Operating the button a second time allows the H PHASE or horizontal Sync timing to be changed from the default settings and the LCD will show H Phase Ons The CRK may now be rotated until the desired setting shown in ns is displayed or the desired result obtained When the button is pressed a third time it will allow the V PHASE or vertical Sync timing to be changed from the default settings and the LCD will show V Phase Line 1 BOUNCE The CRK may now be rotated until the desired setting shown in number of TV lines is displayed or the desired result obtained NOTE If the unit is already genlocked to an external reference signal using the SC lock option and the H Phase or V phase setting changed the unit will lose lock with the reference signal This will occur because the correct colour framing sequence will have been lost The unit will then re lock within 20 seconds TPG200PS030497 Version 2 Issue 1 KM snert amp wiLcox 3 11
47. aneous outputs of Analogue and Digital signals 625 D2 refers to output of Digital signal only 625 PAL refers to output of Analogue signal only 625 PAL I D2 refers to a signal conforming to PAL System specifications KH EETENTESY 9 4 1 TPG20 Pattern Information BARS Note that all 10 bit patterns have embeded EDH codes 00 EBU COLOUR BARS 100 0 75 0 01 EBU COLOUR BARS 100 0 75 0 02 100 COLOUR BARS 100 0 100 0 03 100 COLOUR BARS 100 0 100 0 04 EBU BARS amp RED 100 0 75 0 05 EBU BARS amp RED 100 0 75 0 06 EBU SPLIT BARS 100 0 75 0 07 TARTAN BARS 75 0 75 0 08 VIDIPLEX BARS 100 0 75 0 09 75 HORZ BARS 75 0 75 0 10 100 HORZ BARS 100 0 100 0 FLAT FIELDS 00 BLACK 01 WHITE 100 02 GREY 50 03 YELLOW 75 04 CYAN 75 05 GREEN 75 06 MAGENTA 75 07 RED 75 08 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 CROSS HATCH DOTS 02 BLK CROSS HATCH 03 BLK CRS HTH DOTS 04 CROSS MATRIX 05 EBU PLUGE 1 5 06 EBU PLUGE 1 5 07 100 WINDOW 08 50 WINDOW 09 15 WINDOW LINEARITY 00 RAMP 100 01 RAMP 100 02 RAMP 115 03 ULTRABLACK RAMP 04 MODULATED RAMP 05 MODULATED RAMP 06 SHALLOW RAMPS 07 SHALLOW RAMPS 08 VALID RAMP 09 VALID RAMP 10 STAIRCASE 5 11 STAIRCASE 5 12 STAIRCASE 10 13 STAIRCASE 10 14 MOD STAIRCASE 5 15 MOD STAIRCASE 5 TPG200PS030497 Version 2 Issue 1 625 D1 YPrPb 625 D110 BIT 625 D110 BIT 625 D110 BIT 625 Di YPrPb 625 D110 BIT 625
48. ch All formats 100 cross hatch 12 x 9 squares TPG200PS030497 Version 2 Issue 1 M ETEDTTES3 9 4 11 TPG20 SECTION 4 Pattern Information Generalised Parameters of Waveforms VIDEO HALF LINES IN PATTERNS It should be noted that only some patterns include video half lines at the beginning and end of field blanking The following patterns include video half lines in all formats except those listed below under Exceptions 625 EBU Bars 625 100 Bars 625 EBU BARS and RED 525 SMPTE Bars Full field 525 100 Bars 525 BARS and RED 525 FULL FIELD Exceptions 1 Di YPrPb Patterns in this format do not have half lines in any pattern 2 D1 10 Bit Patterns in this format comply with the requirements of CCIR Rec 656 TIMING ACCURACY The accuracy of timings shown on the following pages is limited by the quantisation processes Synchronising pulses are quantised at 10 Bit in all formats except for the D1 YPrPb format which uses 8 Bits The static error in the duration of the line synchronising pulses 4 7us for example will be approximately ins for 10 Bit quantisation and 5ns for 8 Bit quantisation Dynamic errors are possible in the PAL format where the sample positions vary from line to line due to the subcarrier to line frequency relationship These errors will be of similar magnitude to the static errors TPG200PS030497 Version 2 Issue 1 SNELL amp WILCOX 4 12 TPG20 SECTION 4 Pattern Information PAL 625 CO
49. cox Ltd or their official agents for such repairs to be attempted Failure to comply with these conditions will void the warranty First line maintenance should be confined to the replacement of the plug in card the power supply module the fan and the backplane assembly CLEANING It is important that the ventilation slots in the bottom of the front panel and the holes in the sides of the unit do not become obstructed or blocked in any way including the build up of dust etc as this will interfere with the ventilation and cooling of the unit A reduction of air flow through the unit may result in overheating and the power supply over temperature cut out may operate and shut down the unit The front panel slots side panel holes and the cooling fan should be regularly inspected and cleaned if necessary TO REMOVE THE PCB CARD IMPORTANT WARNING Before attempting to remove the PCB card the two PCB retaining screws located on the bottom panel of the unit must be removed The card may then be safely removed by means of the card ejectors TO REMOVE THE POWER SUPPLY MODULE 1 Disconnect power to the unit by removing the IEC power connector 2 Allow two minutes for capacitors to discharge 3 Remove the top cover of the unit 8 screws 4 Pull off the insulating sheet covering the power supply module 5 Pull off the white plug in connectors 6 Remove the four black M4 nuts securing the module 7 Withdraw the module TPG200PS0304
50. cted to this input the output of the unit will be fully synchronised to this signal source The signal may be black burst or standard composite video via loop through BNC connectors for 75 Ohms If no signal is present the unit will automatically revert to internal SPG operation PARALLEL DATA LOAD INPUT This 25 way female D connector is the interface port PARALLEL DATA LOAD Ii to the computer that allows patterns to be loaded LEL into the TPG20 Standard Centronics connector WARNING The unit is supplied with a 1 5 m shielded 25 way interface cable and it is recommended that only this cable be used If any other type of cable is used e g unshielded twisted flat or over 2m long problems may be encountered Note that only compatible files are allowed to be loaded RS232 REMOTE The TPG20 preset memory locations may be recalled via this interface port See Remote Control Commands TPG200PS080797 Version 2 Issue 2 KI sNeLL amp wiLcox 3 1 TPG20 OUTPUT CONNECTIONS ANALOGUE Analogue outputs are made available via three pairs of BNC connectors and the pairs are marked A B and C Each socket of the pair provides an isolated output of the signal and outputs signals appropriate to the pattern loaded COMPOSITE Two isolated composite outputs are available from the B pair of BNC connectors Output level is standard 1V p p into 75 Ohms Y C SEPARATED OUTPUTS Two isolated Y C S VHS Hi 8 outpu
51. d to be used in conjunction with Kudos Pattern Master software It delivers the same features and functionality as the Kudos TPG20 with the additional capability of downloading line field and frame based patterns Features as well as reference pictures to a non volatile memory via the Kudos Pattern Master software This eliminates the need to download patterns repeatedly from an external source and enables the user to customise the TPG21 generator in the most appropriate way for their application The TPG21 offers the same performance and specification as the Kudos TPG20 with the addition of e 24 Megabits of flash PROM enabling patterns to be downloaded and stored easily via the Kudos e Pattern Master software and computer interface e Downloadable patterns are stored in non volatile memory enabling user to define custom patterns e andcharts most appropriate to their application e Instant programmability supplied via Kudos TPG Pattern Master software Note The Kudos TPG21 is not available as an upgrade option to the Kudos TPG20 aBacoza Sc pease ome WPrA E seem are Nr paved TPG200PS030497 Version 2 Issue 1 6 7 a FORMAT PATTERN SYSTEM 6 W 5 os 6 6 Programmable Dighal Test Pattern Generator ELELE wy EET ft KI EXE 1 1 2 TPG20 Specifications Signal Inputs Reference Signal Outputs Analogue Serial Parallel Trigger Interfaces Data In O
52. e numbers in brackets SMPTE3 LCP This is the file used to define the characteristics of the line numbers in the brackets To run the View program type TPGVIEW lt return gt Using the up down keys select the LLN directory lt return gt Using the up down keys select the desired directory for that format i e NTSC lt return gt Using the up down keys select the desired file name noted above i e SMPTE3 LCP lt return gt The view program will then display the waveform corresponding to this file name in the style of an oscilloscope display In addition to this display the screen contains many useful facilities that may be used to analyse the waveform IMPORTANT NOTE CONCERNING VIEWING OF PAL FILES Patterns with a 25 Hz offset relationship between the colour subcarrier frequency and the line frequency are generated in two parts The Black Burst waveform is loaded into the TPG20 memory first followed by the active signal data The TPGVIEW program can only display the active signal file data i e the black burst signal cannot be viewed TPG200PS030497 Version 2 Issue 1 KD SNELL amp WILCOX O 5 3 TPG20 SECTION 5 Waveform View Program Facility VIEW PROGRAM DISPLAY Snell amp Wilcox Ltd 1993 lt i gt Y 10b lt 2 gt C 9b lt 3 gt CCVS 10 0 A Autosetup AV Dec 53 6 Hex t 1 gt Move W Rn Ins Del H scale V scale Space C1 C2 F Filter On Off Q Quit Marker Markers M On Hold Off End ti
53. ent e Two complete frames of storage allowing instant switching between patterns e An unlimited number of patterns including full frame real images may be downloaded from a PC e Serial and parallel composite and component digital outputs e Analogue composite Y C YPbPr and GBR outputs e 10 bit resolution on three independent channels e Compatible with 16 9 aspect ratio EDTV PALplus standards and low bandwidth HDTV e Format independent structure gives compatibility with future standards and patterns e Kudos TPG20PP PALplus features PALplus Patterns available on request e Full PALplus specification reference encoding to the White Book specification e Vertical conversion from 4 3 to 16 9 letterbox picture e Colour Plus processing with infra frame HF luminance averaging e Chrominance vertical pre filtering e 13 5MHz sampling rate composite PALplus Y and outputs with 10 bit quantisation scale e Reference luminance and reference helper signals on lines 23 and 623 e Widescreen 16 9 pictures originated in 4 2 2 component format with 10 bit accuracy e PALplus specific original test patterns in film mode and camera mode e Import and subsequent PALplus encoding of any still or grabbed 4 2 2 picture TPG200PS030497 Version 2 Issue 1 1 1 TPG20 SECTION 1 Description amp Features The TPG21 is a fully programmable test pattern generator with non volatile memory for customised patterns designe
54. enter is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment or c to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES SNELL amp WILCOX JO TPG20 21 Test Pattern Generator Operator s Manual
55. f lines as shown above and most patterns do not have bottles TPG200P8030497 Version 2 Issue 1 6 ETENMES3 fo 4 16 TPG20 SECTION 4 Pattern Information Specific Parameters of Waveforms Colour Bars EBU 525 White Yellow Cyan Green Magenta EBU Colour bars PAL Format White Yallow Green Magenta 0 610 0 527 TPG200PS030497 Version 2 Issue 1 A ENNAN 4 17 TPG20 SECTION 4 Pattern Information VITS Line 17 625 PAL 2T 20T Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD VITS Line 18 625 PAL Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse VITS Line 330 625 PAL 2T 0 140 Amplitudes In Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD TPG200PS030497 Version 2 Issue 1 EA SNELL amp WILCOX fo 4 18 TPG20 SECTION 4 Pattern Information VITS Line 331 625 PAL Amplitudes in Voits from Blanking Level Timings in microseconds from negative edge of Sync Pulse VITS UK ITS 1 Line 19 625 PAL 2T Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD VITS Line 20 625 PAL Amplitudes in Volts from Blanking Level 0 150 Timings in microseconds from negative edge of Sync Pulse TPG200PS030497 Version 2 Issue 1 DD ETENTCEZI 4 19 TPG20 SECTION 4 Pattern In
56. fied by the sector size must follow immediately after the character e There is no lt RETURN gt character at the end of the packet 29 lt ESC gt This command is used to quit the programming sequence The exact number of bytes as specified by the sector size must follow immediately after the character The data sent is ignored and therefore can be set to any value SNELL amp WILCOX 3 20 TPG20 Pattern Information BARS 00 EBU COLOUR BARS 100 0 75 0 625 PAL D2 01 100 COLOUR BARS 100 0 100 0 625 PAL 02 100 COLOUR BARS 100 0 100 0 625 D2 03 EBU BARS amp RED 100 0 75 0 04 EBU SPLIT BARS 100 0 75 0 05 95 COLOUR BARS 100 0 95 0 06 TARTAN BARS 75 0 75 0 07 75 HORZ BARS 75 0 75 0 08 100 HORZ BARS 100 0 100 0 09 100 HORZ BARS 100 0 100 0 10 VIDIPLEX BARS 100 0 75 0 11 ANTIPAL BARS RED 100 0 75 0 12 SATURATION TEST FLAT FIELDS 00 BLACK BURST 01 BLACK BURST 02 BLACK BURST 03 BLACK WITH VITS 04 WHITE 100 05 GREY 50 06 YELLOW 75 07 CYAN 75 08 GREEN 75 09 MAGENTA 75 10 RED 75 11 BLUE 75 MONITOR SET UP 00 CROSS HATCH 01 CROSS HATCH DOTS 02 BLK CROSS HATCH 03 BLK CRS HTH DOTS 04 CROSS MATRIX 05 EBU PLUGE 1 5 06 100 WINDOW 07 50 WINDOW 08 15 WINDOW LINEARITY 00 RAMP 100 01 RAMP 120 02 MODULATED RAMP 03 ULTRABLACK RAMP 04 SHALLOW RAMPS 05 100 VALID RAMP 06 100 VALID RAMP 07 STAIRCASE 5 08 STAIRCASE 10
57. format MUST be loaded first The value can now be changed by rotating the CRK Clockwise rotation increases the value and anti clockwise rotation reduces the value When the desired value has been reached the SELECT button should be pressed and that value will be loaded and saved in the units non volatile memory and the window will display Settings Saved To select the next or another parameter the SYSTEM button should be pressed until the desired variable is displayed in the window and the process repeated for that particular parameter Note that to cancel the setup function press any button that is not flashing The parameters that may be changed can be selected by successively pressing the SYSTEM button progresses forward through the list or the TRIGGER button progresses backwards though the list and are displayed forward progression in the following order Signal level at the A output The absolute value of the signal level at the output is set against a highly accurate calibrated source at the factory This value is defined as OdB relative to the pattern selected e g a 625 PAL Composite waveform with 100 white will have a value of exactly 1V p p Video Syncs at OdB setting measured at the A output The level may be changed within the limits of 3dB to 25dB in steps of 0 1dB Default value is 0 0dB Relative signal levels between the and B outputs offset NOTE that to correctly align the relative signal
58. formation NTC 7 Composite 0 12 16 18 24 28 32 36 40 43 46 50 54 60 62 100 75 MHz MHz 25 Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse NTC 7 Combination 3 58 MHz Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse FCC Composite 2T J 20 Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 125ns HAD TPG200PS030497 Version 2 Issue 1 M ETTENTES3 0 4 20 TPG20 SECTION 4 Pattern Information FCC Multiburst Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edg of Sync Pulse VIRS Amplitudes In IRE Units from Blanking Level Timings in microseconds from nagative edge of Syne Pulse Multipulse to 5 8 MHz 625 20T 20T Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD TPG200PS030497 Version 2 Issue 1 SNELL amp WILCOX fo 4 21 TPG20 SECTION 4 Pattern Information Colour Multipulse 625 2T 10T 10T 10T Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD Multipulse to 5 8 MHz 525 Colour Multipulse 525 10T 10T 10T 10T 10T 10T Amplitudes in IRE Units from Blanking Levei Timings in microseconds
59. from negative edge of Sync Pulse T 125ns HAD TPG200PS030497 Version 2 Issue 1 AENEIS 9 4 22 TPG20 Pattern Information Multipulse to 4 2 MHz 525 0 MHz OJ EMHZ MHz 20T 10T Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD Pulse and Bar 2T 625 PAL Sinx x 625 PAL 2T Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 100ns HAD f cut off 5 8MHz Amplitudes in Volts from Blanking Level Timings in microseconds from negative edge of Sync Pulse TPG200PS030497 Version 2 Issue 1 sNeLL amp 9 SECTION 4 4 23 TPG20 Pattern Information Sinx x 525 NTSC SECTION 4 9 2 19 5 62 0 30 35 2 40 2 50 8 82 f cut off 4 2MHz 18 0 Amplitudes In IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse Pulse and Bar 2T 525 NTSC Amplitudes in IRE Units from Blanking Level Timings in microseconds from negative edge of Sync Pulse T 125ns HAD TPG200PS030497 Version 2 Issue 1 KM ETTENTCES3 A 4 24 TPG20 Pattern Information SECTION 4 Snell amp Wilcox Test Chart 2 PAL version The Snell amp Wilcox Test Chart 2 is a general purpose TV test chart It can be used for testing signal processors mixers decoders encoders standard converters and display devices This document describes of SW
60. he front edge defines the start of active picture time SIN PULSE RESPONSE A 8 5Hs period of black is followed by a 2T 200ns MAD pulse having a sin form at 700mV amplitude This may be used to check the frequency response of a system by comparing the amplitude of the pulse to that of the white bar Pulse to Bar response Any rings or under over shoots on the front and or back of the pulse edges will indicate poor frequency and or phase response of a system AUGMENTED COLOUR PULSE RESPONSE A 10T 1ps HAD sin2 pulse modulated with subcarrier is provided to allow chroma to luma gain and delay inequalities of a transmission system to be easily seen The bottom of the pulse should be flat any symmetrical deviations from flat indicates a gain error and asymmetrical deviations will indicate chroma luma timing errors 75 COLOUR BARS A small section comprising 75 Colour Bars is provided so that vector positions and amplitudes may be checked on a suitable vectorscope They may also be seen on a normal oscilloscope at low intensity in the background as they are only generated for a small proportion of the picture time when all lines are displayed on the screen The colours follow the normal sequence i e yellow cyan green magenta red and blue Note that there is no black section to this set of colour bars tr 300ns 75 Colour Bars 75 Colour Bars 75 Colour Bars TPG200PS030497 Version 2 Issue 1
61. however a subcarrier phasing offset is required then this offset is converted to equivalent ns of horizontal delay and added to the displayed number TPG200PS030497 Version 2 Issue 1 DI ETTEDTES3 9 3 12 TPG20 SECTION 3 Under normal circumstances line number boundaries occur at the HAD point on the leading edge of sync but in the TPG genlock system an artificial line boundary is incorporated at approximately half way across the line for two reasons 1 When changing the horizontal phasing advance and delay the vertical genlock position should appear to remain unchanged 2 Both NTSC and PAL have a non integer number of cycles of subcarrier in a line so if the normal method of line numbering were to be adopted and the vertical phasing was not changed as the horizontal phasing crossed the leading edge of sync then a horizontal movement corresponding to a non integer number of subcarrier cycles would have to occur as the Ons horizontal phasing position was crossed Vertical Phasing The vertical phasing control moves the genlocked position in integer numbers of TV lines This results in the following phenomenon 1 The apparent subcarrier phasing as viewed on an externally locked Vectorscope will change by 180 for each change of 1 line for NTSC since there are 227 5 cycles of sub carrier per line This maintains the same relative position between the reference sync edge and output sync edge 2 For PAL a slightly more comp
62. iclockwise rotation the number will restart at the maximum value and then reduce again This system allows large changes in values to be made with ease while maintaining maximum resolution NOTE that if a button is pressed that expects a subsequent action to be performed and no action is taken the LED indication will be extinguished and the unit will default to the condition before the button was pressed after approximately 30 seconds To CANCEL an illuminated button press the button again so that the LED is extinguished NOTE that some functions may require a button to pressed a number of times to de activate the function However at any time the SELECT or any other button may be pressed to de activate the current button and select a new function TPG200PS030497 Version 2 Issue 1 DD SNELL amp WILCOX A 3 4 TPG20 SECTION 3 OPERATION FROM SWITCH ON When first switched on the unit will output the pattern and the setup that was last loaded Normally the unit will leave the factory with the following pattern loaded EBU Colour Bars 625 line 50Hz Europe SMPTE Colour bars 525 line 60Hz USA The pattern type and its parameters will be shown in the LCD window and the number in the right hand lower corner will correspond to the number assigned to that pattern see Numerical Listings of Patterns for details TO SELECT A PARTICULAR PATTERN The basic procedure is as follows Step 1 FORMA
63. k V Phase Genlock Subcarrier Phase Moving Pattern Style Moving Pattern Speed Output Gain Format Select Pattern Select Trigger System Memory Power Rated Voltage Range Consumption Mechanical Temperature range Case Type Dimensions Weight SECTION 2 2 Line by pixel increments 1 Frame in increments of 1 line 360 in increments of 1 Horizontal Vertical Diagonal Circular Pixel increments field field steps frame steps 3 2 pull down pause and bounce Select pattern A or B 3 dB to 25 dB in increments of 0 1 dB 625 PAL D2 D1 YPbPr GBR amp SECAM 525 NTSC D2 D1 YPbPr GBR Allows over 450 patterns to be selected 0 5 V pulse 1 H duration at any line position in up to 4 frames Allows system variables to be set up changed and saved Up to 9 front panel settings may be stored 90 V to 250 V 50 60 Hz A C 75 VA maximum 0 to 40 C Operating 1U Rack Mounting 483mm x 456mm x 44 4mm w d h 7 kg TPG200PS030497 Version 2 Issue 1 DD ETETTES3 fo 2 2 TPG20 SECTION 3 POWER CONNECTIONS This is the mains power connector suitable for a standard IEC type power cable and contains a 1A T fuse If a plug is fitted to the cable a fuse of power 7A Fast should be installed 50 60H20 6A The Power On Off switch is located behind the drop FUSETA T 6 down front panel in the left hand corner INPUT CONNECTIONS REFERENCE INPUT When a suitable signal is conne
64. lex effect occurs The apparent subcarrier offset as indicated by a vectorscope will change by 89 42 for each line delay of vertical genlock position and not 90 This is because there are 283 75161129 cycles of subcarrier per line and not exactly 283 75 cycles The extra 0 00161129 of a cycle occurs because of the non orthogonal sampling structure of PAL and is made up of the half a cycle of subcarrier gained across 1 field of a PAL signal TPG200PS030497 Version 2 Issue 1 SNELL amp WILCOX JO 3 13 TPG20 SECTION 3 MEMORY Operating the button marked MEMORY allows the settings of any parameters set up by any of the 8 8 MEMORY front panel controls to be memorised and stored in N TRIGGER SYSTEM up to 9 locations o O To store the settings set up by the front panel controls press the MEMORY button after setting the desired parameters using the front panel controls and the button will be illuminated Decide on a desired location Numbered 1 to 9 inclusive above the front panel buttons press and hold down until all button LED s are extinguished The settings will now be stored in that location arator EE y EY EET To RECALL settings stored in a location three methods may be used 1 Press the MEMORY button and then press the button number corresponding to the location required All the stored settings will now be recalled and the parameters will be changed to the stored values 2 Press a memory bu
65. ly synthesised still amp moving mathematically correct test patterns The Kudos TPG20 is a standard format and hardware independent programmable test pattern image generator It can be instantly configured to supply ultra precise test images with no drift or approximation in all current standards and formats as well as current and future standards and formats such as 16 9 and PALplus Features SECTION 1 The TPG20s programmability means that the user can define custom patterns images to aid in depth analysis of new technology There are more than 500 resident signals in the unit lt is the ideal tool for today s complex environments where it is necessary to assess technically calibrate and quality check increasingly complex new technologies such as digital VTRs compression engines aspect ratio converters and sophisticated decoders e The only complete reference test source for multi standard multi format environments e Continuously expanding range of ultra high quality mathematically generated precision test signals e Currently approximately 500 patterns available as standard e Patterns available in all broadcast standards and formats e Line based patterns frame based patterns moving patterns and real pictures e All composite test patterns are resident in their encoded form zero encoding errors or drift e Fully genlockable e Outstandingly easy to use e Output exceeds specification for testing CCIR 601 digital equipm
66. nals with small 93 75 white box on 100 white background grey level 85 box and small dark grey 7 5 box on black background They allow display brightness and contrast adjustments to be easily made For better visibility small boxes are accompanied by short higher contrast vertical lines PULSE AND BAR TESTS Three types of 2T 200ns pulses are provided white on black black on white and white on dark grey 20 This last pulse is useful for ringing and echo measurements if equipment under test includes black clipper concealing distortions below black level CHROMA NON LINEARITY TESTS This area contains a 3 level chroma staircase in the form of 33 3 66 6 and 100 magenta boxes It can be used for chroma nonlinearity and differential phase measurements LARGE AREA CHROMA TESTS A 100 red box is provided for visual assessment of chroma noise large area chroma flicker and Hanover bars type distortions TPG200PS030497 Version 2 Issue 1 A ENES TPG20 SECTION 4 Pattern Information LOGO This area is reserved for user logo or text info message e g Snell amp Wilcox TEST CHART IN FORMATS OTHER THAN PAL In some other formats the Snell amp Wilcox 2 test chart looks very similar but some values could differ For instance in NTSC format the 2T value is not 200 but 250 ns and black level set up is added etc TPG200PS030497 Version 2 Issue 1 AETS 4 30 TPG20 SECTION 4 Pattern Inf
67. nd is terminated by a RETURN character 0x0D HEX For example lt ESC gt T lt RETURN gt toggles the between output frame A and B If the command is successful the TPG20 will return OK lt RETURN gt or else it will return 2 lt RETURN gt 1 lt ESC gt D n lt RETURN gt Recalls Memory where n is ASCII 1 to 9 0x31 to 0x39 HEX This function recalls hardware memories 1 to 9 from the TPG20 2 lt ESC gt P n lt RETURN gt Program memory where n is ASCII 1 to 9 This function saves the current status of the machine into memories 1 to 9 3 lt ESC gt T lt RETURN gt This toggles between output frames and B No parameters required 4 lt ESC gt B n lt RETURN gt Set bounce rate where is 0 to 200 This command sets the bounce rate if available In order for bounce to be available both frames of memory must have the same pattern format 5 lt ESC gt G n lt RETURN gt Set genlock mode where is 0 genlock off 1 H lock and 2 SC lock 6 lt ESC gt V n lt RETURN gt Set vertical phase where n is 1 to maximum number of lines in frame 7 lt ESC gt H n lt RETURN gt Set horizontal phase where is 0 to maximum line length time Since the horizontal phase of the TPG20 can only move in whole samples the actual position is rounded to the nearest sample 8 lt ESC gt S n lt RETURN gt Set Sub carrier phase where is 179
68. nner The colour code for the lead is as follows GREEN lead connected to E Protective Earth Conductor WHITE lead connected to N Neutral Conductor BLACK lead connected to L Live Conductor The terminals of the IEC mains supply lead are identified as shown opposite Free Plug Socket Free Note that for equipment that is not fitted with a mains power switch to comply with BS60950 Clauses 1 7 2 and 2 6 9 the power outlet suppling power to the unit should be close to the unit and easily accessible CAUTION AUTION N Warnings Voltages within this unit can be lethal under certain circumstances Where power RISK OF ELECTRIC SHOCK ini DO NOT REMOVE COVERS is required to be connected to the unit during servicing great care must be taken NO USER SERVICEABLE PARTS to avoid contact with these voltages REFER SERVICING TO QUALIFIED PERSONNEL ONLY z en Maintenance should only be carried out by suitably qualified personnel No part of this publication may be transmitted or reproduced in any form or by any means electronic or mechanical including photocopy recording or any information storage and retrieval system without permission being granted in writing by the publishers or their authorised agents TPG200PS080797 Version 2 Issue 4 MK BSS 9 View Program V1 0 TPG V11 1 0 2 EMC Standards This unit conforms to the following standards Electromagnetic Compatibility Generic Immunity Standard BS
69. of waveforms stored in pre programmed devices These devices are programmed with information such as timing and amplitude details for each TV line and frame for each particular waveform This information is contained in numbered files which may be read using this View Program Facility The waveform or section of the waveform may then be displayed on the computer screen similar to an oscilloscope display and particular parameters of the waveform accessed by use of the facilities provided TO USE THE VIEW PROGRAM The file name of the section of the pattern that you wish to view must first be found This may be achieved by viewing the file TPG PATTERNS TXT using any ASCII text viewing program This file contains a list of groups of file names arranged in the same order as the groups shown in the Numerical Listings of Patterns section of this manual The first line of each paragraph is a string defining a particular pattern and corresponds to the description that appears in the LCD window of the TPG20 To View a Particular Section of a Pattern As an example let us assume that it is required to inspect and measure parameters of the super black section of SMPTE COLOR BARS 525 NTSC D2 This list should be searched for the string SMPTE COLOR BARS 525 NTSC D2 Listed below this title will be a list of files SMPTE COLOR BARS 525 NTSC D2 TPG LLN NTSC L 21 182 SMPTE1 LCP L 183 201 SMPTE2 LCP L 202 262 SMPTE3 LCP L263 SMPTE3R LC
70. ormation Snell amp Wilcox Test Chart 3 PAL only X SN SN NNN IOI GE KSS KPS JUG 8 EJ GIERKI IR SERRE KI DRASD RAK RES 0 700 tr 300ns tf 300ns tr 300ns HAD 600ns tf 300ns 75 Colour Bars 2T 10T 0 LIS 10 5 15 5 19 23 62 5 The Snell amp Wilcox Test Chart 3 is a general purpose TV test chart that allows the measurement of amplitudes and timings to be easily made The composite PAL D2 waveform is generated using 10 Bit quantisation giving 588 levels from black to white Sync level is 4 300 mV black is 256 0 mV white is 844 700 mV If not otherwise specified all lines bursts and other chart components mentioned in this document are 100 contrast covering full range from black to white This pattern contains all active picture half lines at the start and end of fields and is designed primarily for making measurements on analogue oscilloscopes Waveforms are generated as non orthogonal PAL to avoid the problems of measuring apparently jittery signals orthogonal PAL produces this effect which makes accurate measurements difficult TPG200PS030497 Version 2 Issue 1 A ETEN fo 4 31 TPG20 SECTION 4 Pattern Information PEAK WHITE LEVEL A peak white bar is provided to check luminance levels The bar has an amplitude of 700mV is 5us wide Half Amplitude Duration with rise and fall times of 300ns 10 to 90 amplitude sin2 form T
71. otating the CRK and are as follows Off Horizontal moves at constant speed Vertical moves at constant speed Diagonal moves at constant speed Circular moves at constant speed SHM Horizontal moves at Sinusoidal speed SHM Vertical moves at Sinusoidal speed Where SHM stands for Simple Harmonic Motion and the speed of movement follows a Sinusoidal function The MOVEMENT button should be pressed again and the LCD will now show SPEED and the desired speed may be selected by rotating the CRK to the desired setting SPEED The SPEED menu allows the speed of the movement to be set The speed is defined by increments of Pixels per field if FIELD is selected in the MOVEMENT MODE Menu or pixels per frame if FRAME is selected in the MOVEMENT MODE Menu When the MOVEMENT button is pressed for the third time the PAUSE menu will be shown in the LCD PAUSE The Pause time in numbers of TV frames up to 255 is the time that the movement is inhibited at the end of its travel This function is only available for the Vertical Horizontal and Diagonal styles of movement At the end of the Pause period the movement will then restart Frames can be set to any number from to 255 frames When the MOVEMENT button is pressed for the fourth time the MOVEMENT MODE will be shown in the LCD TPG200PS030497 Version 2 Issue 1 MOVEMENT MODE Rotating the CRK will enable the following movement modes to be selected Field Movement
72. rameters be changed as the unit will fail to operate correctly if they are changed and saved Up to six Crystals may be installed in the unit depending on the type of unit supplied For the unit to operate correctly the correct crystal values must be fitted for the type of unit supplied The correct value of crystal required in the particular position will be displayed in the window indicating that this value has been factory installed Note that not all crystals need to be fitted for the unit to operate correctly RETRIEVE FACTORY PRESETS To retrieve the factory settings which cannot be changed proceed as follows Switch off power to the unit and wait for a few seconds Press and hold down the SYSTEM button switch on the power and release the after 3 4 seconds The window will display CalibrationSetup Mode Press the SYSTEM button repeatedly until the window displays Set FactoryPresets Press the flashing SELECT button The window will display Set FactoryPresets loaded Press any non illuminated button Switch off power and wait for a few seconds Switch on power and operate as normal The unit will now have reverted to the original factory settings TPG200PS080797 Version 2 Issue 2 KI SNELL amp WILCOX 9 SECTION 3 3 18 TPG20 REMOTE CONTROL COMMANDS FOR THE TPG20M The default speed setup is 19 200 bits second 8 bits data 1 stop bit no parity All commands begin with the ESCAPE character 0x1B HEX a
73. rence input is similar to a broadcast specification signal and has a fixed Sc H relationship and a correct colour framing sequence if however the reference signal does not have a fixed Sc H relationship and or an incorrect colour framing sequence the SYNC lock option should be chosen This is because the unit will not be able to extract enough information from the reference signal to allow correct genlock to be achieved Under these conditions the unit will genlock to the reference signal vertical sync and horizontal sync only The output signal will however have a correct Sc H relationship and correct colour framing sequence TPG200PS030497 Version 2 Issue 1 DETEDTES3 6 3 10 TPG20 SECTION 3 Generally the SC lock option should be used whenever possible and the SYNC lock option should only used when the reference signal quality is insufficient to allow the unit to successfully genlock or the reference signal is a monochrome signal The green GENLOCKED LED will now flash while the unit is locking up and when genlocked will remain illuminated NOTE When the SC lock option is selected for genlocking to composite reference signals the unit can take up to 20 seconds to achieve lock This is quite normal When the SYNC lock option is selected lock will be achieved within 2 seconds If the reference signal is not available or is not an appropriate signal source the LED will continue to flash To change the timing par
74. rove the contact between the plug and socket shells are recommended TPG200PS080797 Version 2 lssue4 ARANIR View Program V1 0 TPG V11 1 0 3 Software Version Number TPG20 Software Version 11 1 Waveform View Program Software Version 3 1 Packing List The unit is supplied in a dedicated packing carton provided by the manufacturer and should not be accepted if delivered in inferior or unauthorised materials Carefully unpack the carton and check for any shipping damage or shortages Any shortages or damage should be reported to the supplier immediately Enclosures TPG20 21 Test Pattern Generator Power cable Parallel Data Load Cable Shieled 25 way D 1 5 m long Operator s Handbook TPG200PS080797 Version 2 Issue 4 AENEASE View Program V1 0 TPG V11 1 0 4 Table of Contents SECTION 1 DESCTIDTION csssssscccccceccesssssnsssneeeesseeseeeesececesensessucescusecsecesessesenececeseneacaeesersaacececesersnues 1 1 Features 00 eee eeessseccceecceccesssssnenensessecssecesesssessesesssssceesecscescsssescssecsacecesteaaeesesssnaeaceseceeseaas 1 2 2 Specifications rrsrrrrvnvnrrvvrvevvensennene 2 1 Standards Compliance ssssesessesssssssssssesssnsnsccecccssssssscssseccececsseseseeaaceceeeeeeeeeeeseaeaes 2 3 3 Operation Power Connections cccccccsccecccsescceeesssnssscseesceecessseesnsesessccssessesessecusssssssssessesececteeesseens 3 1 Input ConnectionsS www ananeraraennanennsvenns
75. s is because TRS Timing Reference Signals codes are inserted in Serial Data signals but not in Parallel Data signals SUBCARRIER OFFSET COMPENSATION When the button is pressed again the window will display Set PAL Subcar Offset or Set NTSC Subcar Offset depending on the output pattern format selected Rotating the CRK will allow the phase of the subcarrier at the output relative to the phase of the subcarrier at the reference input to be changed and set The factory default settings provide calibration to give 0 degree subcarrier offset between the actual output of the unit and the reference loop through output The offset may be varied by 179 degrees to 180 degrees in steps of 1 degree This function may be used to compensate for the delay produced by cabling between the output of the unit and its final destination where the relative phase at that point is required to be displayed as zero or a particular fixed value This would normally be aligned using a dual channel Vectorscope at the destination of the reference and the video signal NOTE that this function is only available for PAL and NTSC patterns and offsets apply to all NTSC and PAL patterns Offsets may be set independently for both NTSC and PAL formats When pressed a third time the window will display Set PAL Standard System B G or System I TPG200PS030497 Version 2 Issue 1 By rotating the CRK either PAL Standard B G or PAL Standard may be di
76. splayed in the window The SELECT button should then be pressed to select the desired PAL standard Note that the major difference between PAL B G and PAL standards is the rise and fall times of the sync and equalising pulses See Generalised Parameters of Waveforms for more details When the SYSTEM button is pressed a fourth time the firmware version and the TPG model type will be displayed in the window SYSTEM Calibration Mode Operation of this button allows the system variables to be set up changed and saved Switch off power to the unit and wait for a few seconds Press and hold down the SYSTEM button switch on the power and release the after 3 4 seconds A pattern in the required format should now be loaded The SELECT button should now be pressed The system variables may now be set up for the current format The window will display CalibrationSetup Mode It is important to note that once the system variables have been changed and saved these values will be stored in a non volatile memory and will be invoked when the unit is powered up again To change the system variables proceed as follows GAIN CALIBRATION FOR FORMATS Press the SYSTEM button once The window will now display the first system variable that may be changed e g Set 625 COMPS 0 0dB NOTE This operation changes the values for the specified format only To calibrate for any given format a pattern of that format MUST be loaded first
77. sssrnnsnnsnnnnnenessvannnnnnnnnnnnnsnnvnnnenennnnennnnnnneressvsnevssnennen 3 1 Output ConnectionS r srerrevarvnvvnvvnnnnnnnnnersnsnnnnnnnnnnsveveversesnnnnnvenssnvnnnvnnnenensnnennnnvennneveeneneee 3 2 Front Panel ControlS rannnnnnvnnnnnnnnnnnnnnnnnennanvnvnnnnnnenernnsenennvnsvnnsnnensnnnnnnnennuvevssnnnsnnnnnennnensnne 3 4 Operation from Switch ON esvavnnsnrrererrsnrrevnrnnnnennnnnnnnnnnnnnnnennennnvssunnnnnnvnnnnnnnnnevennnnenenevnnenene 3 5 To Select a Particular Pattern aronnnnnnnnnnnnnnnnnnnnvornrrnnnnnnnnnnnnnnnnrennnnsnnnnnnvnnvnnnnnnennunnsnnnnnnnnene 3 6 Specific Button FUNCTIONS rrvrsvrnvvannnnnnrnrnrennnnvennnnnvnnenresssannnvrnnsssnnnnennenevansnvsnnennnnrnveneneeee 3 7 Genlock Facilities rrrrrrrrrerrrnnnnnnnvrnnnrvvenenerssnsnsnnnnnnnnnnrnesennnnnensesnnvnnssrnnnnvnnnansnnnnnnnnsennnnnennnee 3 10 LET sescessesssssnsnsscceneneaccacceccsaneususnanecacseseesecssssseeceseessseeseceseneusesesceessesesssueeauecesusacess 3 14 MoOvement snanannnnnnnnnnvvrvnnvnrenvnnnnsennensnnnensansnnnnnvnnnnsvsnssssnennnnnnrensssnnsnnnnnnenessnnennnnnnnnnnnnenenenser 3 14 O CJ CANA 3 16 GAIN EEEE 3 17 To Retrieve Factory Preset Settings ccccccsscsssscesssssssssscscssssssssescscssssesesessssseseaseacersaceees 3 18 Remote Control Commands rsnnnarnannvnvnnnnnnnnnnnnnnnnennnnensesnnnnnnnnnnvennenensennnnsnennnnnnunnnsnnunnnnennene 3 19 4 Pattern Information Numerical Listings of Patterns For Standard Unit
78. t signals are available from the A and C pairs of BNC connectors A connectors Y output Level is a nominal 1V p p into 75 Ohms C connectors C output Level is a nominal 0 3V p p colour burst into 75 Ohms COMPONENT OUTPUT Two isolated outputs of component signals YPbPr at EBU Betacam or M11 levels are available from the A B and C pairs of BNC connectors Nominal EBU output levels for 100 colour bars into 75 Ohms are as follows A connectors Y signal 1V p p B connectors Pb U signal 0 7V p p connectors Pr V signal 0 7V p p RGB OUTPUT Two isolated outputs of analogue Red Green and Blue signals are available from the A B and C pairs of BNC connectors A connectors Green signal 0 7V p p 0 3V p p syncs into 75 Ohms B connectors Blue signal 0 7V p p 0 3V p p syncs into 75 Ohms C connectors Red signal 0 7V p p 0 3Vp p syncs into 75 Ohms TPG200PS030497 Version 2 Issue 1 TPG20 SECTION 3 DIGITAL OUTPUTS SERIAL 1 8 2 Two isolated outputs are available from these BNC connectors at standard level Output may be composite or component depending on the format selected D1 D2 D3 PARALLEL One output of digital parallel is available from this 25 way D connector conforming to format selected Output may be composite or component depending on the format selected D1 D2 and TRIGGER OUTPUT A trigger output is available on a BNC connector and supplies a 0 5V negative going pulse from
79. tated and the alternative patterns available will be shown in the LCD NOTE that the actual patterns available will depend on the format of the pattern The CRK should be left in the position when the desired pattern is shown in the LCD 1PG200PS030497 Version 2 Issue 1 KI ETENTES3 fo 3 6 TPG20 SELECT The SELECT button will allow whatever parameter is shown in the LCD to be selected The LED indicator in this button will flash while the parameter is being selected as in the previous steps When the desired parameter has been found and is displayed in the LCD the SELECT button should be pressed and the parameter will be loaded as indicated in the LCD The button will now cease flashing NOTE that when selecting a pattern the new pattern will after loading appear as an output signal associated with the output in use and the previously selected pattern will be stored in the other output store see below OUTPUT Select SPECIFIC BUTTON FUNCTIONS OUTPUT Select The TPG20 has two completely separate memory banks and each bank can store a full frame pattern Either of the stored patterns which may be of different formats can be accessed and made to appear at the output connectors by operating the OUTPUT select button The storage banks are designated Output A and Output B and can be selected by operating the toggle action OUTPUT button This button will be illuminated green when bank A is in use and will be illumina
80. ted red when bank B is in use Press this button to change from bank A to bank B NOTE If a pattern containing movement has been selected it will occupy both A and B memory banks so that only the one pattern will be available SELECT TPG200PS030497 Version 2 Issue 1 DD SNELL amp WILCOX SECTION 3 5 MOVEMENT GAIN Jone io Test Patte 3 7 TPG20 SECTION 3 TRIGGER Select EE Pressing this button allows the trigger pulse position FORMAT PATTERN TRIGGER SYSTEM which is timed to correspond to a particular TV line o a o i o within a picture frame to be repositioned Test Pattern Generator Eines pv EA SNELL When a Composite PAL pattern is selected any line in any or all of the 4 frames of the 8 field sequence may be chosen When a Composite NTSC pattern is selected any line in any or all of the 2 frames of the 4 field sequence may be chosen It can be used to trigger for example an oscilloscope to enable a particular line to be displayed and easily analysed When pressed the button will be illuminated and the LCD will indicate on which frame or All Frames that the trigger pulse is being generated e g SCOPE TRIGGER FRAME 1 To change the frame number the TRIGGER button should be pressed again until the desired frame number is indicated To change the line number the CRK should be rotated until the desired line number is indicated The SE
81. the selected vertical phasing The unit will display degrees us and lines since when a genlock system is being set up it would be normal to use a vector scope displaying degrees of offset to set the subcarrier phasing and an oscilloscope displaying us ns etc to set up the horizontal and vertical phasing To avoid the genlocked line number changing when the subcarrier phasing or the horizontal phasing is changed various limits and modes of operation have been incorporated into the function of the genlock as described below Subcarrier Phasing Adjustment When the SC Phase function is selected unit genlocked in the SC LOCK mode the subcarrier phasing between the reference signal and the output signal may be set within the range 180 and 179 subject to any offset entered in the system Subcarrier Offset Compensation It should be noted that when the subcarrier phasing is changed the complete sync train of the output signal will move by a time corresponding the phase change introduced Horizontal Phasing unit genlocked in the SC LOCK mode The horizontal phasing moves in steps of 1 cycle of subcarrier across the line The number of ns displayed in the LCD when adjusting horizontal phasing is the total H Phase position taking into account the required subcarrier phasing i e when 0 phase is required then the horizontal phasing displayed will increment in steps of 225ns for PAL and steps of 279ns for NTSC with no offset If
82. tton All the buttons will become illuminated The CRK may now be rotated The patterns stored in memory will now be shown in the display and its memory location will be indicated by the appropriate button flashing on and off Pressing this button will then select the pattern shown in the display window This method allows previewing of the patterns stored in memory before selection using the CRK to scroll through a list of stored patterns MOVEMENT Patterns and Bounce When first pressed the window will display either Styles if a pattern capable of movement is selected or Bounce Rate if two patterns of the same format are loaded into the A and B output memory banks The Movement function will then operate in the appropriate manner MOVEMENT This function allows the parameters of a moving pattern to be defined The parameters of the moving pattern that may be defined are the Style Speed and Pause Timing and Mode To define the parameters the MOVEMENT button should be pressed which will cause the LED to become illuminated The LCD will now show STYLE and by rotating the CRK the desired style may be selected TPG200PS030497 Version 2 Issue 1 3 14 TPG20 SECTION 3 STYLE The STYLE menu allows the type of movement for the pattern to be defined NOTE that movement can only be applied to patterns configured to allow movement in defined areas The different types of movement available are selected by r
83. ut Control Front Panel Controls Spinwheel Operated LCD Menu Genlock Genlock H V and Sc Phase Movement Output A or B Gain Format Pattern Trigger System Memory Specifications Output Standard Bandwidth 2 x Oversampling Filter Amplitude Accuracy Non Linearity Differential Gain Differential Phase Differential Channel Delay Reference Subcarrier Stability Subcarrier Initial Setting Accuracy Sch Phase Genlock Crystal Stability Genlock Crystal Initial Setting Accuracy Genlock H Jitter Genlock Fsc Jitter Reference Input Standard Composite or Black Burst Reference Level Reference Input Return Loss SECTION 2 Composite Video or Black Burst loop through Component YPbPr GBRS Composite and Separated Y C 2 sets of Serial Digital Composite Component 1 output Composite Component 1 output Parallel Centronics RS232 625 PAL D2 D1 YPbPr GBR amp SECAM 525 NTSC D2 D1 YPbPr GBR 6 5 MHz 0 1 dB Typically 8 0 MHz 0 1 dB 12 Bit 55 tap Better than 1 Better than 1 Better than 0 75 Better than 0 75 lt 3 ns between channels 1 ppm 1 Hz PAL 2 Hz NTSC 0 3 5 ppm PAL amp NTSC 10 ppm 601 PAL M amp PAL N 1 Hz PAL 2 Hz NTSC lt 5 ns PAL lt 2 ns NTSC lt 1 525 625 Standard level 6 dB Better than 38 dB at 4 5 MHz TPG200PS030497 Version 2 Issue 1 KI ESEIA 2 1 TPG20 Specifications Control Ranges Genlock H Phase Genloc

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