• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

768. That's the mode I adjusted it for. 768 parameters are separately adjustable from the ones for the opposite modes, except the H FREQ. The H FREQ pot is 4.7K from the factory. This signal I take to slightly PCB that holds my two H FREQ pots, an inverter, and two NPN transistors that change in one or the other pot as a substitute of the original one. Turning the H FREQ pot (on the rear edge of the PCB) will ultimately offer you a display, however it's off-display to the proper. Here I will simply present what is needed to get an understanding of the expertise and get you started in your setup. I pulled the coil off the engine and started testing things. The pink wire secondary popping out of the coil center seemed unfastened so I performed with it. I don't have my oscilloscope out and working, so I can't see precisely what happens, but the voltage settles into an AC signal throughout the coil primaries, so I believe the ignition module is doing one thing. I clicked it back firmly onto the centerstem of the coil. The little vacuum lines are available in and connect on the underside again left aspect of this image.

I unscrewed the computer covers and took some footage for about 1/2 hour after which hooked up the unfavourable side cable and browse the codes with out attempting to begin first. It's in collection with an 18K SMD resistor on the solder side of the PCB. You then regulate the H SHIFT VGA pot (on the precise of the PCB) and discover that this pot has insufficient range to heart the display. I discovered that I had to turn the 4.7K pot to max resistance to move the display to the left, so I eliminated the 18K resistor and the 4.7K pot, and replaced them with a 22K resistor and a 10K pot. I remembered that these wires have inbuilt resistance to chop down on ignition noise, in order that appeared okay. I ran comparative benchmarks utilizing the Landmark PCPRO take a look at program, and the velocity of this card - when writing to video RAM - is similar to different excessive efficiency (Matrox Millenium 2, Diamond Stealth 3D 2000), playing cards I have tested not too long ago.

I used the monitor this (reasonably nerdy) method for some time, and then I noticed a small advert in Nuts and Volts magazine for a average value ($200) translating video card made by a company referred to as Ming. Even if you possibly can set up your video card for a hundred and twenty Hz or extra refresh, the 6091 nearly certainly will not work at an excessive amount of past its 67 Hz vertical scan price specification. I discovered that I might provide this by triggering a lab pulse generator from the video card's horizontal sync output, and using the resulting (inverted) pulse to sync the monitor. I ordered one, and it turned out to be a modified (new video BIOS chip, a number of wire jumpers) Jaton 58P card, which uses the Tseng Labs ET6000 chip. After pulling the distributor top, I could not work out how one can take away the spinning stem from contained in the distributor to look deeper. I opened the distributor (pic r2c3,4,5) and performed with the ignition coil (pic r2c1). In actual fact, as talked about above, the gasoline sprayed out beneath stress once i disconnected the high-voltage spark coil from grounding mount screw.

The voltage spike popping out of the ignition coil main is routed into the distributor, and then it farms out the voltage to the appropriate cylinder in sequence. It spun out simply, taking the middle stem of the coil with it. The upper disconnected terminal was also 11.7 volts by means of the coil until I connected the gray wire again on. I disconnected the 2 and screwed the coil stem back in firmly with a phillips screwdriver. Hence, I tapped the relay coil to present me the 0/12 volt signal to inform me what mode the monitor is displaying. Besides, what is control cable you need it to show the standard 31.5 kHz VGA text mode. Fortunately, the timing jitter in the pulse generator was low enough that no horizontal jitter was noticeable on the show. The only downside is that the horizontal linearity in textual content mode is now off. 200 mode (games) also works appropriately after this modification.