I'm installing EDIS to my car according this diagram
http://www.megamanual.com/ms2/edis4ew.gif
would like to understand more about shields on PIP/SAW and VR wires.
What are they for? Are they just grounded?
Also what is the function of 25uF on the 12v wire going to the coil?
Any help would be appreciated
Thanks
M.
shield on wires (EDIS)
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
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LeslieTroyer
- Helpful Squirter
- Posts: 35
- Joined: Tue Nov 20, 2007 11:46 am
shields perform one of two functions 1) keep "stray" RF from inducing (changing) the signal that is running down the wires inside of the shield or 2) keep RF from being emitted by the wires inside of the shield.
I was told by a EE who specialized in high freq systems that the shields should be attached to ground at ONE end only, and the other end should float.
LEs
I was told by a EE who specialized in high freq systems that the shields should be attached to ground at ONE end only, and the other end should float.
LEs
What's the RF?LeslieTroyer wrote:shields perform one of two functions 1) keep "stray" RF from inducing (changing) the signal that is running down the wires inside of the shield or 2) keep RF from being emitted by the wires inside of the shield.
I was told by a EE who specialized in high freq systems that the shields should be attached to ground at ONE end only, and the other end should float.
LEs
And what means should "float" (not touch enything? be isolated?)
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lastinline1998
- MegaSquirt Newbie
- Posts: 1
- Joined: Mon May 05, 2008 8:09 pm
Re: shield on wires (EDIS)
The 25uF is the resistance between the primary and secondary of the coil.
Re:
25 uF = 25 micro farad capacitor. Plenty in the search on it.Maki wrote:Understood thanks. Is there a rule how long the wire should be? What if I mount the EDIS module near the ECU?I-W wrote:not connected or touch anything is correct.
RF = Radio Frequency
And please somebody tell me about the function of 25uF on the 12v wire going to the coil?
1990 VW Corrado w/ 2.0 16v - MS2extra, V3.0 board, 2.886 code