This is a support manual for the GBS-8220 – which
Contents
1. O button again Item Review Arcade RGBS CGA EGA YUV TO 2 VGA CONVERTER GBS 8220 NEW Play your arcade boards on a standard computer vga monitor Item Link http www arcademvs com rgbstovga htm Main Site Link http www arcademvs com Their Ebay Store Link http stores ebay com Y PLUS Description The high definition converter GBS 8220 it s professional of game convert Support all games Amusement Playstation Xbox wii convert to CRT monitor LCD monitor PDP monitor Auto scan CGA EGA YUV signal Two VGA outputs output high resolution signal Supports CGA EGA YUV signal input Supports VGA output 640 480 800 600 1024 768 1360 768 CGA EGA signal auto scan 15K 24K 31K YUV signal auto scan 480i 576i 720i 1080i 480p 576p 720p 1080p Chinese and English OSD Supports position control amp zoom control True digital 24 bit A D converter for true 16 7 million color conversion Supports all VGA monitor CRT LCD PDP PROJECT Item Description taken directly from their ebay ad Broken english and all My Score 4 out of 5 Value 5 Item was actually purchased from their ebay store for 39 00 and 12 00 shipping for a total of 51 00 USD For the features it promissed this is a pretty good deal Packaging 3 know that it s not the reason you purchase one of these but it does say a little about how a company Works As you can see in the images below the packaging isn t very durable They did at least2. This is a support manual for the GBS 8220 which comes in a one vga port and two port version When using this board you want to read all the information in this document there are many common mistakes issues when using this for arcade conversion that can easily be cleared up Most common is using a 1Amp power supply or wrong power This board works best with 5V and at least 2Amps Less than 2 Amps will give problems Another common issue is Red Color increasing and video issues Adjusting the clamp ST and clamp SP settings of the board will usually correct this Other issues are incorrect signal connections Who makes these cards These are made by Gonbes The model numbers are GBS 8200 GBS 8220 They mostly look the same except the 8220 has 2 VGA D SUB 15 connectors in output http en gonbes com product detail asp menuid 94 amp id 22 What is it It s a pcb card for video upscaling that can convert a 15Khz RGBS input e g from a JAMMA board or a composite YPbPr signal into a more conventional 31 Khz VGA output compatible with most modern monitors and LCD LED TVs which no longer recognize 15Khz Commonly used to convert old consoles computers to a VGA signal upgranding old cabs into newer monitors and superguns of course How well does it work Your mileage may vary Many people seem to be happy with it but many others have a number if issues Outputs 60Hz so may be worse if your input is 50Hz I ve only trie
3. ase share Do need a sync cleaner Not for Superguns JAMMA inputs It would be needed if you connect a console or computer from it though How to tell if it s genuine Don t know Apparently there are bootlegs of the card floating around that don t work as well Mine looks identical to the one on Gonbes website with the chinese title with a III on it Is it better than a XRGB Don t have an XRGB but I m tempted to say the GBS is worse because has noise of some pixels flickering is very sensitive to input voltage and the two voltage inputs seems to work differently had issues with the DC in one less with the other molex input Other than that an XRGB upscaler costs 10 times more than the GBS so would hope it works better If get a scanline filter do need a different power supply No I saw on a video somebody using DC in on the GBS for the power supply then chaining the scanline filter through the molex connector The GBS actually has two power connectors and it turns out that you can use one to connect another device The SLG 3000 is 5V as well so the setup works very well What PSU do I need 5V 2A at least Any less lower voltage or not enough amperage will give you a red or blue screen with blocks even without an input signal Apparently the GBS8200 can accept 12V but reportedly this seems to heat it which leads to different issues after running for some time Gonbes website states 5V 0 5 so
4. can vary you will need to figure out what the RGB output pinout is Once the video wires from the game device you intend to converter are known connect splice to the included 8 pin 6 wires RGB cable Red Video to Red Wire P11 R Green Video to Green Wire P11 G Blue Video to Blue Wire P11 B H Sync to Gray Wire P11 S V Sync to Yellow Wire P11 VS e Ground Ref to Black Wire P11 GND Connect the 8 pin 6 wires RGB cable to P11 on the GBS 8220 converter PCB STEP 3 Connect the GBS 8220 PCB to your 5VDC Power Source by connecting the RED wire of the power cable to the 5VDC source and the BLACK wire to the DC GROUND source Then connect the 2 pin connector of the power cable to the P9 on the GBS 8220 converter PCB The power requirement for the GBS 8220 is 5VDC 5VDC ZA If the power supply cannot put out 2AMP then it may cause problems with the on board converter CPU Usually this converter PCB would be connected directly to an arcade game power supply which puts out 3 VDC up to 15A current When powering up the GBS 8220 converter PCB after about 5 seconds try pressing the AUTO button on the converter PCB This should self adjust and lock in the picture on your VGA output monitor If no good then remove the P11 wire harness from the converter P11 connector Then move the GRAY WIRE over one position on the connector so it 1s next to the YELLOW Wire Then connect back into the converter and power up then try the AUT
5. d 60 Hz What are the issues The upscaling applies a bit of smoothing which you can reduce using a sharpness setting When in operation you may see some noise with some pixels flickering This is barely noticeable it s pixels of the output resolution so they re small and some TVs may correct it haven t tried You may have sync issues if your grounding or power source is not good enough Does it slow down the video Probably but not as far as can tell The movement feels like 60Hz can notice some interlacing in some shadows ie for strong black flickering on white but it s massively better than the FPS being put out by a Multi PCB for example 30 fps update using a scanline filter improves the interlacing by hiding some of it still noticeable but plenty playable What s your take on it My own experience is ok There s minor noise in places flickering dots or some colors bleeding into another not big issue but you can tell it s not a PC The noise is are more or less noticeable at different resolutions initially had sync issues it would work fine for about an hour then the image would start to jump That was due to a power supply that was not strong enough when it heated up What s the difference between the GBS 8200 and the GBS 8220 As far as can tell the only difference between the two seem to be an extra VGA output probably a clone of the display only tried the 8200 so if anybody has more info ple
6. image seen only briefly Will build amp and test again Genesis 1 Image couldn t sync and when briefly seen it was very dark Will modify RGB signal with the resistors caps seen in UK SCART cable schematics and try again Game Cube Using OEM component cable things look really good 3D games make the shimmer really hard to notice PS2 Using OEM component cable same results as GC
7. make an attempt to mark it Fragile It also took about 3 weeks to reach me after purchase in the central USA area Contents 4 You get all the cables you need and a nice little board with holes for mounting feet nice forward thinking NO feet included added those you see in the pics The cables have the connectors needed for each of it s available connection types Now the negatives The manual is ugly 4 poorly printed pages Some are blurry and hard to read Nota huge deal but you should at least make the prints clean and clear Installation 5 What a simple breeze this turned out to be Depending on your game pcb board type use one of the 3 available inputs and let the auto detect do the rest Once I hooked it up and turned it on all had to do next was configure it Configuration 4 would of given it a 5 if the menu was defaulted in English Instead it comes up in Chinese and had to fumble through to the last menu to find the language select At least there is an english option Without that was just fumbling around However once in English the menu was very simple Lots of sensible options that got me everything needed and easy to navigate was able to get my brightness holds etc exactly where needed it As well as the resolution size which is kinda odd 1360 x 768 I m sure there is a reason There are 3 pots as well that control the color settings Nice Usage 5 The first time powered off the machine was wo
8. n ll DSC02253 jpg 163 64 kB 1024x768 viewed 126 times Display Menu 1 6480x488 2 8808x6868 3 1024x768 4 1388x788 Return l Dsco2254 ipg 204 17 kB 1024x768 viewed 96 times Last Edit May 14 2009 12 01 34 pm by supadave ogged supadave e Full Member e rr e Offline e e Posts 131 Re Review Arcade RGBS CGA EGA YUV TO 2 VGA CONVERTER Reply 1 on May 14 2009 11 52 34 am More Images Game is blurry in photos due to motion and crappy camera Language Menu gt i English P X LI Return ll psco2255 jpg 144 04 kB 1024x768 viewed 89 times Il Dsco2246 ipg 179 79 kB 1024x768 viewed 371 times Display Menu 1 B40x480 2 882x8242 S Qal 1024x768 3 el Da b3 6 a x 26 ua o u Return A F dJ l DSC02249 jpg 251 75 kB 1024x768 viewed 303 times Bi al i x oa 3 ER P i 1 epe exo ll DSCN1419 JPG 229 62 kB 1024x768 viewed 179 times l DSCN1420 JPG 208 37 kB 1024x768 viewed 197 times ll Dsco2243 ipg 181 9 kB 1024x768 viewed 432 times What I ve tested so far MIVS Very very good Brightness is perfect with the best picture visible with the pots at about 95 Only the shimmer is problematic and its really not that bad at all honestly Saturn Tapped RGB from the board no modifications needed Image is fucking amazing except for the shimmer PC Engine couldn t sync
9. rried When powered it back on it didn t appear as if it saved my resolution settings was concerned that all my other settings were not saved either After checking it did save my configuration settings but not my resolution setting set the resolution setting again and powered it off again This time when it came on it did infact save all my settings including resolution tested the power off and on many times to be sure Every time it came up it was all there and saved Conclusion My Score 4 out of 5 I m very satisfied with the results this board has provided found very little information on this item when did my initial searches Therefore I m hoping my review will help anyone out who may be in the market for a converter such as this one Thank you and happy gaming ll DSCN1413 ipg 123 59 kB 1024x768 viewed 171 times ll DSCN1425 JPG 175 21 kB 1024x768 viewed 426 times ll DSCN1416 PG 134 47 kB 1024x768 viewed 295 times ll DSC02238 jpg 247 71 kB 1024x768 viewed 713 times Main Menu Picture Geometry gt Display gt Language Exit Il Dsco2251 jpg 200 75 kB 1024x768 viewed 145 times Picture Menu Brightness g5 Contrast 98 saturation B8 sharpness B8 Default Return l DSC02252 jpg 225 88 kB 1024x768 viewed 110 times Geometry Menu 1 H Position J6 2 V Position 24 3 H Size 54 4 V Siza 45 hb B 7 Clamp st gg Clasp sp 95 Default Hetur
10. stick to 5V Personally use the same power supply as my JAMMA harness Otherwise get sync issues which could be due to grounding perhaps have not tried another setup If you have a bouncing image bad sync it could be due to the power supply not being strong enough CGA to VGA Video Converter GBS 8220 PCB Basic Setup Article Number 13 Rating 3 9 5 from 7 votes Last Updated Thu Feb 11 2010 at 7 09 PM Included with the CGA EGA YUV to VGA HD Converter PCB GBS 8220 will be e The main GBS 8220 PCB e 2 Pin 5VDC Power Cable e Pin 6 wire RGB Cable e GBS 8220 Manual 4 pages STEP 1 Connect the VGA output monitor to P3 VGA OUT of the GBS 8220 Converter PCB If connecting a second VGA monitor connect the second monitor to P4 of the GBS 8220 converter PCB STEP 2 Connect the incoming CGA EGA VGA or component video source to the GBS 8220 converter PCB Most new JAMMA harnesses include the special 5 pin white RGB connector Below is a picture of this common RGB video connector found on newer JAMMA harnesses If you have this type RGB connector then simply plug this connector directly into P3 of the GBS 8220 converter PCB lt 5 Pin RGB Video Connector Sample If you do not have the simple RGB connector shown above the GBS 8220 converter PCB includes a RGB cable which can be used to adapter your CGA or EGA video source to the GBS 8220 input Since the output of the game or device you want to converter
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