KENT MODULAR ELECTRONICS Ltd
Contents
1. D 6 D C L gt RONMNGO When increasing vertical size i e making image smaller the value will only increase to the total number of incoming video lines less a small amount Moves picture up amp down on screen Changes width of picture See Appendix A for notes on adjustment of Frequency Width and Frequency Fine Moves picture left and right on screen Adjusts the pixel clock frequency to match the incoming signal Fine tunes the sampling of each pixel See Appendix A for notes on adjustment of Frequency Width and Frequency Fine Switches to Advance Menu NO default VESA USER NEW VESA Uses VESA default values as starting values USER Assumes Horizontal and vertical size are already correct NEW Automatically sets up LPT Box for current video mode based on a 4 5 aspect ratio See Appendix B for notes on Resetting Modes Restores OSD back to the values when OSD was Page 10 of 19 activated Exit Switches the OSD Menus off and automatically saves the picture settings Alternatively simply press the Menu button at any time to switch off OSD and save Advanced Menu Sharpnes Temporal Spac ial Other Mo Backligh Pixel Ma RGB Menu Svstem Menu Previous Menu 48 40KHzZ 59 8Hz Sharpness 0 30 Default 15 Adjust on fine text to adjust preferred hard or soft image Temporal Dithering Yes No Dithering causes averaging of pixels to create smoother greys2. Some video Spacial Dithering Yes No signals on some TFT panels can cause picture artefacts when dithering is ON Other Modes 1 1 Other Modes can normallv be ignored If there are more than one signals with identical video timings then the user can use this feature to switch between them Backlights Adjusts brightness of TET backlights Pixel Matrixing On Off Automatically adjusts image position every 15 minutes to reduce the effect of image retention which can be caused by displaying static pictures for long periods RGB Menu Switches to RGB Menu System Menu Switches to System Menu Previous Menu LG0172A Returns to Main Menu Page 11 of 19 System Menu 0 E 5 iP topes Saving Frame Lock ing Active OSD Horizontal position Location of OSD menu on the screen OSD Vertical position Location of OSD menu on the screen OSD timeout sec s 3 45 Timeout period of OSD menu Energy Saving On Off When On the LPT Box will switch to standby mode within several seconds of having no signal input FRC Frame Lock Synchronise Output and Input frame rates Scaling Active Yes No Enables low resolution image to be viewed without scaling No Signal Mode BLUE BLACK NONE Colour of display when no signal is connected Previous Menu Returns to Main Menu Firmware version number V Firmware No in lower right corner signal Frequency The LPT Box measures and di
3. 73 37 86 75 37 50 85 72 75 033 034 035 036 037 038 039 040 041 600x480 85 427 50 89 04 80x60 60 J 3790 04 80x60 327 4800 045 80x60 275 4690 LG0172A Page 14 of 19 050 051 100 052 053 80 00 054 67 52 055 70 52 056 1280x768 60 4773 057 57 73 058 60 13 059 68 68 100 8143 061 1531 062 15 62 063 15 62 064 18 52 065 640x350 60 86 56 46 067 15 62 068 7660x200 50 156 00 50 152 00 Xx 6 BR 01 Xx 6 1572 079 724 x 336 21 86 080 720 x 526 31 25 080 640 x 480 6 314 576 x 436 2641 083 1024 x 768 86 35 51 Dimensions M5 fixing bush 4 off under feet Important Maximum of 6mm Screw thread into unit 165 3 120 0 Legacy Pixel Transformer LG0172A Page 15 of 19 31 9 i Appendix A Notes on Adjustment Procedure for LPT Box I Frequency Frequency Fine and Horizontal Size When adjusting the Frequency the width of the displayed image will change The Frequency control is not just a width control For best results the Frequency should be correctly matched to the video signal without worrying about the picture width When the Frequency 1 correct the width can then be corrected with the Horizontal Size control The Video signal 1s made up of pixels These are generated in the video generator process cont
4. best results 1 Connect the signal to the correct input connectors and apply power to the LPT Box 2 OSD Main menu select Auto Setup NEW Press the menu button This will force the LPT Box to calculate settings for the new video signal 3 Adjust the Vertical Size and Vertical Position so that the height of the picture is correct 4 If there is particular instability of the picture at the top of the picture then increase the Coast value Normally this action 1s not required 5 Ifthe picture is flashing on amp off or moving about the screen then increase the value of Mode Change Delay Normally this action is not required 6 Ifthe picture has a vertical black band showing at the left hand side or if the colours appear darker in some parts of the screen then adjust the Clamp Position amp Clamp size Normally this action is not required 7 Adjust the Frequency amp Horizontal Size as well as the Horizontal position amp Frequency Fine to make the picture width and position correct Spending time on this part of the adjustment will result in best displayed image Appendix A gives some information about the meaning of these adjustments As a starting position it 15 worth trying to get the Horizontal Size correct You may already know form the video signal specification what it s values are These are commonly expressed in a variety of ways a If the graphics are 512 x 320 pixels say then the correct value for Horizont
5. status letters have the following information RGB Sync on Green not present RGsB Sync on Green present H H Sync present Inverted colour indicates neg polarity Normal colour for pos polarity V V Sync present Inverted colour indicates neg polarity Normal colour for pos polarity When Composite Sync is input the display shows H Sync present amp V Sync not present E Equalising pulses present on V Syncs S Serration pulses present on V Syncs Interlaced video present LG0172A Page 13 of 19 Pre loaded Video Modes amp Signal Timings Rate Hz KHz 001 104x768 4835 02 640x480 60 314 005 1280x1024 60 640 0060 39x36 50 1786 008 160x100 60 7500 009 714 576 50 1590 01 160x90 60 559 013 3147 014 3147 0 XXX X XXX 15 67 15 74 20 65 24 78 15 62 17 86 0 XXX X XXX 0 640 344 60o 640x246 6 808x238 60 156 330x449 66 9325 15 62 64x20 60 1514 640x350 60 2186 16 79 17 86 508x238 60 15 74 16 10 560x238 60 1574 27 03 3125 560x224 60 156 560 446 6 1562 560x448 nn 3450 70 NEN WEM 04 007 018 L 9 4 020 00 02 023 9024 NICE 026 07 028 030 E WE 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 0 Go N 72 70 16 34
6. KENT MODULAR ELECTRONICS Ltd Legacy Pixel Transformer 29LPT1002T User Manual Contents Page BiU E MJ 3 SPECIGIS sione end 4 Connecting the LPT Box to Analogue video signals esee 5 DINCSC OND COR 22222548 2 I5 way D Input connettore ren tee 6 Connecting LPT Box to TTL Video Signals 6 Connecune the LPT Box to your TET monitor ost eo cay e e a b eere b tn 7 User Controls and Indicators i wt apii US aq ag alias 9 1 88488 reiecit PREMIT 9 Pusu ution ta ta 9 OSD 8005 2422 cbse es 9 OSD Lockout CANS ira theese ante a eds en tee RT EUR 9 1 cases ivan dea sce eae ce ee 10 Advanced Men ndo edd 11 e SEN TT S T 17 13 Pre loaded Video Modes amp Signal 1118 14 ean er inb od dedit eda 15 FN 0 615 016 K PEN 16 Notes on Adjustment Procedure for LPT BOX nn nnnnnnnannnn rr nanna nanennnnnnnnnna 16 Notes on tesettiti Video a Um 17 B A udo usu icd M MM c IE 18 Suggested Procedure for adjusting LPT Box with Difficult Video Signals 18 RE U
7. PH1241 for 4 BIT TTL video This cable is used where video signal has R G B video plus a single Intensity input The most common use of this was the old CGA standard 9 way D 4 bit video Pin No 16 colours Pin 1 GND 0v Pin 2 nc Pin 3 Red Pin 4 Green Pin 5 Blue Pin 6 nc Pin 7 Intensity Pin 8 Horiz sync Pin 9 Vert sync LPT Box with TTL Accessory cable fitted Note These TTL Accessory Cables are not supplied with 29LPT1002T and must be ordered separately LG0172A Page 6 of 19 Connecting the LPT Box to your TFT monitor 1 Select a TFT monitor for use with the LPT box Make sure it has the correct input connection The TFT monitor must have a DVI D signal input b LM m Ferrers NEC e L L L i Choose the screen size for the monitor The standard LPT Box works best with monitors that have a 4 3 aspect ratio These are available in a number of different sizes Currently 15 07 17 0 and 19 0 models are popular Other sizes are also available such as 12 1 21 3 and 23 1 The chief difference between different screen sizes 1s in the number of pixels of each LCD Generally 12 1 800 x 600 pixels 15 0 1024 x 768 pixels 17 0 1280 x 1028 pixels 19 0 1280 x 1024 pixels 21 27 1600 x 1200 pixels Any of these sizes will work with the LPT box 16 9 and other aspect ratio screens are also available These screens will work with the LPT box if they s
8. U T 19 Setting up a second or subsequent LPT BOX 6 nnnnnnnnnnnnnnnnnnnnnnnnnnrrnnnnannnnnnnnnnnnntaa 19 5 atus om DA bed uH 19 edt 19 LG0172A Page 2 of 19 Overview The 29LPT1002T is a compact RGB video scalar designed for Slow Scan signals It transforms the low pixel resolution produced by legacy System controllers into full screen displays on modern TFT monitors It is proposed as an alternative to KME s UN Series of Slow Scan TFT monitors where benign environments allow the use of a commercial PC monitor instead of an industrial grade unit The 29LPT1002T accepts a wide range of non standard RGB video signals analogue or TTL and transforms them into DVI D format with scaling according to the native resolution of the PC monitor SVGA XGA or SXGA Low refresh rate or interlaced signals are displayed flicker free with superb clarity 60 timings in the 15kHz 40kHz range are pre programmed at delivery Unknown signals are automatically displayed but some fine adjustments will be required for optimisation New settings are stored and automatically recalled when connected again The table below shows a small selection of pre programmed timings Features e Specially designed for Slow Scan Signals e g Siemens WF470 ABB MOD300 GEM 80 TTL Analogue amp Interlaced Signals accepted Automatic Save of new signal timings Output to any standard DVI D TFT Monitor BNC amp 15 D i
9. ade with pages of text etc Frequency correct A Windows Shutdown screen contains a large amount of the type of video so is very good for seeing the effect of the frequency setting The left hand picture shows the shutdown screen with frequency correctly set In the right hand picture there are six vertical dark bands due to incorrect frequency It can be helpful to practise setting frequency on this picture before trying on a real system LG0172A Page 16 of 19 Frequency Fine on off This figure shows what a single bright pixel looks like 1n the video signal The pixel does not have vertical sides and the exact start time of the pixel is uncertain If the monitor samples the pixel at then the pixel will look good If it 15 sampled at then the uncertainty of the pixels start time and the slope of the pixel edge will combine to make the pixel appear noisy and dark on the screen It is the frequency fine control that lets the LPT Box be adjusted so that the sample is taken at B instead of A Notes on resetting Video Modes The LPT Box is shipped from the factory with a pre loaded set of commonly used video modes This means that the LPT Box can immediately be connected to a variety of video sources without any adjustment required The LPT Box may be connected to a video signal that has not been previously seen or pre loaded In this case the LPT will try to fit one of it s exi
10. al Size 1s 512 b There may be 80 characters with a 5 x 7 character cell This makes the Horizontal Size 80 x 5 400 pixels Or 480 pixels if a character spacing pixel 1s also used c The Pixel Clock may be specified in this case you can work out the correct Frequency by dividing the Pixel Clock frequency by the Horizontal Frequency that 1s displayed on the LPT Box OSD If there are no specifications for the video signal then just use the setting that the LPT Box has generated when performing the Auto Setup NEW LG0172A Page 18 of 19 Appendix Setting up a second or subsequent LPT Box Y ou may need to connect a second LPT box to the same video signal or to an identical system In this case most of the OSD settings for the second LPT box will be identical to those of the first LPT Box The important settings to record from the first LPT box are Frequency Horizontal Position Vertical Position Horizontal Size Vertical Size Coast Size Mode Change Delay Clamp Position Clamp Size The value of Frequency Fine is likely to be different between the different LPT boxes This is because Frequency Fine is making an adjustment that compensates for the small timing differences caused by such things as the interconnecting video cable lengths Appendix D Output Connector 29 pin DVI Connector Pin out and Signal Names Pin Signal Name Pin Signal Name Pin Signal Name 1 TMDS Data2 9 TMDS Datal 17 TMDS Data0 2 TMDS Data2 10 TMDS Da
11. e 4 or gt buttons without the Menu button will allow quick adjustment of the contrast OSD Menus The OSD Menu button is used to turn the On Screen Menus on amp off When switching the Menus off the monitor automatically saves any adjustments that have been made to the picture Some Menu Items are only available in certain modes of operation The Menu select buttons are used to highlight the menu items The Menu adjust buttons are used to adjust the highlighted item OSD Lockout Feature Accidental User adjustment of the monitor controls can be prevented by using the OSD lockout feature If the Menu button is held down for 15 seconds then the OSD will turn off LG0172A Page 9 of 19 and be locked from further access amp adjustment The only user controls will then be Brightness amp Contrast The LPT Box OSD can be restored to normal operation by holding the Menu button down for a further 15 seconds until the OSD menu reappears Main Menu Press the menu button to open the main OSD menu Vertical Size Vertical Position Horizontal Size Horizontal Position Frequency Frequency Fine Advanced Menu Auto Setup Restore LG0172A zm E uS uM EE 5S 355359 9 o Vert Vert Hor Hori Freq Adya Auto Rest Ext Es 8 40KHz 59 8Hz D zd lt 0 OF et ou nm nom VV D Ti mua Ug unm CO Em
12. from the video source 1s set to 75 2 in this loop through connection For a single LPT Box connected directly to the video source termination switches should be switched ON LG0172A Page 5 of 19 15 way D Input connector The LPT box also has a standard 15 way D signal input The signals on this connector are treated in exactly the same way as the BNC connectors So sync combinations such as sync on green can be used on this input just as on the BNC connectors Data Input Connector 15 way high density D Pin 1 Red video 1V 75Q Pin 8 Blue ground Pin 2 Green video 1V 75Q Pin 9 Not Used Pin 3 Blue video 1V 750 Pin 10 Sync ground Pin 4 Not Used Pin 11 Sync ground Pin 5 Not Used Pin 12 Not Used Pin 6 Red ground Pin 13 Horizontal sync TTL levels Pin 7 Green ground Pin 14 Vertical sync TTL levels Pin 15 Not Used Connecting the LPT Box to TTL Video Signals Connection of the LPT box to a TTL signal is by optional Accessory Cable The cable converts TTL signal on 9 way D connector to 15 way D input on LPT box The standard TTL Accessory Cables 30PH1244 for 3 or 6 BIT TTL video This cable is used with most TTL signals 9 way D 3 bit video6 bit video Pin No 8 colours 64 colours Pin 1 GND 0v GND 0v Pin 2 nc Red Intensity Pin 3 Red Red Pin 4 Green Green Pin 5 Blue Blue Pin 6 nc Green Intensity Pin 7 nc Blue Intensity Pin 8 Horiz sync Horiz sync Pin 9 Vert sync Vert sync 30
13. nnected to a signal that has been pre programmed in the factory then little adjustment should be needed The TFT Monitor should be displaying the correct image and the LPT Box LED should be illuminated green If the LED 1s red then there is a problem with the input signal If the Video signal is unknown to the LPT Box then the picture will initially display with picture size and or shape positioned wrongly Manual adjustment 1s required to obtain an acceptable result The following pages describe how the OSD menus can be used to adjust the LPT Box If a quick attempt to obtain a correctly aligned picture 1s not successful then refer to Appendix A for a procedure to get the LPT Box adjusted to the best settings LG0172A Page 8 of 19 User Controls and Indicators The LPT Box 1s adjusted by OSD menus that are controlled by push buttons on the front of the unit Menu Select Buttons Menu Adjust Buttons gt VOA 4Ob Legacy Pixel Transformer LED Indicator The LED indicator illuminates to show that the LPT box power is switched ON A Green Light shows that the LPT box 1 active with signals on it s input amp output A Red Light shows that the LPT box has no signal or a bad signal at it s input Push Button Controls Contrast amp Video Brightness Quick Adjustment Pressing one of the w or 4 buttons without the Menu button will allow quick adjustment of video brightness unique to each video mode Pressing either of th
14. nput connectors Selectable Output Resolutions according to DVI D monitor used Rugged Metal Construction with mounting points On Screen menus for simple control of input signal adjustments LG0172A Page 3 of 19 Specifications supply Input voltage supply Input Connector Power consumption Fuse RGB Signal Input Connectors Sync types amp Levels Slow Scan Support Horizontal Scan Rates Vertical Scan Rates Clock Rate User Controls Output Connector Output Video Pixel Format Output Controls Dimensions Weight approx Housing Operating Temperature storage Temperature LG0172A 90 265V ac 50 60Hz IEC 320 type 20W max 1 25 20mm a Analogue RGB 0 7 1 0Vp p b TTL gt 2 75 additional cables required 15 pin D BNC x 5 Separate H amp V ve TTL or Composite ve TTL or Sync on Green ve 0 3V Pre programmed Analogue or TTL inputs in 15 40kHz range Autosave of new signals 15 80kHz 40 80Hz 110 max Brightness Contrast H V size amp position plus Full OSD Menu functions DVI D connecting directly to monitor s DVI cable selectable according to native resolution of monitor used Full use of TFT monitor s OSD controls 294 x 165 x 58 mm 2Kg Painted Steel Black to 50 deg C 20 to 65 deg C Page 4 of 19 Connecting the LPT Box to Analogue video signals The LPT Box can be connected to most types of video signal This includes TTL or analogue video sync on g
15. reen composite syncs separate syncs The LPT box can accept Equalising pulses and serrations non interlaced or interlaced video BNC Connectors LPT box has five BNC connectors These work with analogue video in three four or five wire systems SEPARATE SYNCS 5 Wire system Video is on three cables red green and blue Synchronising pulses are on two separate cables Horizontal syncs and Vertical syncs COMPOSITE SYNCS 4 Wire system Video is on three cables red green and blue Synchronising pulses are combined onto a single cable These Composite Syncs are connected to the H input of the LPT box SYNC ON GREEN 3 Wire system Video is on three cables red green and blue Synchronising pulses are added onto the green video cable r The LPT Box BNC amp 15 way D connectors have 7502 termination resistors on their red green and blue video signal inputs This is the standard value for most video systems The resistors can be removed by Switches 1 2 3 on the LPT Box In the picture here The switches are in the On or terminated position Switch 4 is not used Termination switches are normally only switched off if there 1s another LPT Box or a legacy CRT monitor connected to the same video signal as the LPT box In this case the switches on all the displays amp LPT boxes should be set so that only one of them is making a 7502 termination Normally the display furthest
16. roller PC etc A crystal oscillator controls the rate at which the pixels are generated This 1s called the Dot Clock When the LPT Box receives the video signal it must convert it back to it s individual pixels in digital form To do this it must sample the video at the same rate as the dot clock When the frequency control is adjusted the LPT Box is changing the rate at which the video is sampled Each press of the frequency control changes the sample rate by one pixel per line The visual effect on the LPT Box screen of incorrect frequency adjustment 1s that there are vertical bands of darkened or noisy pixels running down the screen The greater the frequency error then the more bands there are If the frequency value 1s wrong by two pixels then two noisy bands will be seen If the value is wrong by 100 pixels then 100 noisy bands will be seen Strangely a picture that has the frequency wrong by a very large amount can actually appear better than one where the frequency 1s only slightly wrong The actual content of the picture also has a big effect on how easy it 1s to see the noise bands To set the frequency easily it 1s best to display a picture that has a large number of individual pixels displayed screen will be very good for helping to make the 99 ec adjustment while Or will completely hide the noise bars In practice it is not always possible to control the characters like this so adjustment has to be m
17. splays the actual Horizontal and Vertical frequencies of the video input signal LG0172A Page 12 of 19 RGB Menu l 000r um R le M C C K2al2lmmomm 06 oO o Red Green Blue Gains Colour Temperature Coast Size Mode Change Delay Clamp Position Clamp Size Previous Menu RGB status rt eme E 0 02 0 9G ZEN j JJ 00 Use to adjust USER colour as preferred Default values are 126 which give Normal display colours User Default 6000 9500 5000 This is used to make LPT Box ignore equalizing EQ pulses Increase the coast size when EQ pulses are making top of picture lean over to left or right This changes the time that the LPT Box waits before it tries to re adjust itself to changes in signal input timings A small value allows fast switching between signals A large value makes the LPT Box tolerant of unstable or noisy sync pulses When the LPT Box detects a VESA video mode the default is a small Mode Change Delay When a Slow Scan or Industrial video mode is detected the default is large The video clamp fixes the black level of the video signal to the correct level If the clamp is too long or it s position is wrong then a black bar may be seen at the left hand edge of the picture Adjust Clamp size amp position to fix this if required Returns to Advanced Menu The block of
18. sting modes to fit to the new signal This may not cause the best results It can be advantageous to select the Reset Mode s NEW option on the OSD menu This will tell the LPT to ignore the pre loaded programs and adjust itself to the signal timing In general it is good to perform the NEW option when trying to connect to new signals The Reset Mode s VESA option should be used when the video signal 1s known to come from a PC The auto setup will start with known default VESA values when this option 15 selected The Reset Mode s USER option 1 selected when the horizontal and vertical size are already correct the auto setup will then adjust the frequency and horizontal vertical position until the image is central LG0172A Page 17 of 19 Appendix B Suggested Procedure for adjusting the LPT Box with Difficult Video Signals If the LPT Box is connected to a signal that has been pre programmed in the factory then little adjustment should be needed If the Video signal is unknown to the LPT Box then the picture will initially display with picture size and or shape positioned wrongly Manual adjustment is required to obtain an acceptable result If a quick attempt to obtain a correctly aligned picture is not successful then the procedure below can be used to get the LPT Box adjusted to the best settings This procedure should let you get the LPT Box adjusted near to the best settings Some further fine adjustment may be needed for
19. tal 18 TMDS Data0 3 TMDS Data2 4 Shield 11 TMDS Datal 3 Shield 19 TMDS Data0 Shield 4 TMDS Data4 12 TMDS Data3 20 TMDS Data5 5 TMDS Data4 13 TMDS Data3 21 TMDS Data5 6 DDC Clock SCL 14 5 V Power 22 TMDS Clock Shield qm DDC Data SDA 15 Ground for 5 V 23 TMDS Clock 8 Analogue vertical sync 16 Hot Plug Detect 24 TMDS Clock Cl Analogue Red t Analogue Green Analogue Blue C4 Analogue Horizontal Svnc Analogue GND Return analogue R G B Pins marked are not used the 29LPT1002T Tat Information Display Technology BV Tel 31 0 45 5665353 Fax 31 0 45 5665255 E mail info idt nl Website www idt nl tat
20. upport any of the pixel formats listed above The LPT box can be configured for special pixel formats by special order 2 Connect the Monitor to the LPT Box The LPT box has a single DVI output connector Simply connect the monitor s DVI cable to this connector Set Switch first to select Monitor type THES O f DVI Output connector on LPT Box 6 4 2 1280x1024 3 1600 1200 mma T IO 3 Set the Monitor selector switch on the LPT Box The rotary switch next to the LPT Box DVI connector is used to set the LPT box to give the DVI output pixel format that looks best on your TFT monitor The Switch should be set so that the LPT box 18 set to be the same as the Native resolution of the TFT monitor So for a 15 0 TFT monitor the LPT box will work best when set to switch position 1 1024 x 768 Ere Here the selector switch 16 set to 2 1280 x 1024 This setting 1s likely to 9 Se be best for 17 0 and 19 0 TFT monitors or other displays that have a native resolution of 1280 x 1024 pixels You will find that some TFT monitors give an acceptable picture at any 2 1280x1024 16001200 setting of this switch LG0172A Page 7 of 19 4 Switch on the LPT Box Monitor and video signal DVI D di LPT Box connected to TFT M gt E l Signal and 19 TFT Monitor TA E cN Monitor Amd DVI D Connection to TFT monitor 5 Make adjustments to the LPT Box as required If the LPT box is co
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