---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 05/15/15: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:22 AM - Tachometer (BobbyPaulk@comcast.net) 2. 08:35 AM - Re: Fw: RV10-List: Odyssey optimal charge voltage (Robert L. Nuckolls, III) 3. 09:54 AM - Re: Tachometer (user9253) 4. 11:50 AM - Tachometer (BobbyPaulk@comcast.net) 5. 12:55 PM - Re: Tachometer (user9253) ________________________________ Message 1 _____________________________________ Time: 07:22:39 AM PST US From: BobbyPaulk@comcast.net Subject: AeroElectric-List: Tachometer List Does anyone know of of a situation where the Tachometer output of the Rotec E-Mag ( Square wave ) is hooked to a Dynon EMS? I can not get the amplitude of the signal from Rotec and Dynon says it must be 12 v and not more than 50. Bobby Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Status - Flying 236 hrs. Do Not Archive ________________________________ Message 2 _____________________________________ Time: 08:35:28 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Fwd: RV10-List: Odyssey optimal charge voltage At 04:23 PM 5/14/2015, you wrote: >Forwarded from the RV10 list > > >Begin forwarded message: > >>From: Kelly McMullen <apilot2@gmail.com> >>Date: May 14, 2015 at 12:41:31 AKDT >>To: rv10-list@matronics.com >>Subject: RV10-List: Odyssey optimal charge voltage >> >>Just wondering if anyone has researched what optimal alternator >>setting should be using the Odyssey 925L battery? Whether it should >>be different than the old wet cell set point between 13.8 and 14.2. >> >> No. Bob . . . ________________________________ Message 3 _____________________________________ Time: 09:54:19 AM PST US Subject: AeroElectric-List: Re: Tachometer From: "user9253" What model Dynon EMS are you using? The SkyView EMS has both a high voltage and a low voltage tach input. The high voltage input can come from a "P" lead with a 30K resistor. The low voltage input can be less than 12 volts. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442136#442136 ________________________________ Message 4 _____________________________________ Time: 11:50:07 AM PST US From: BobbyPaulk@comcast.net Subject: AeroElectric-List: Tachometer Joe, I am trying to tie my Dynon DEK - 180 ( 2007 vintage) Pin #32 Green / White RPM Left into the Tachometer output ( Pin 7 Square Wave ) of the Rotec E-Mag. I can not get a go or no go from either Dynon or Rotec. Any help would be appreciated. bobby ________________________________ Message 5 _____________________________________ Time: 12:55:01 PM PST US Subject: AeroElectric-List: Re: Tachometer From: "user9253" Bobby, The safe way to hook it up, so as to not risk damaging anything, is to use a 30K resistor in series between the ignition pin 7 and the EMS pin 32. If the D-180 does not display an RPM, then look at the signal with an oscilloscope or digital meter that reads peak voltage. Or you could use the trial and error method. If the tachometer does not work with a 30K resistor, then remove it and connect ignition pin 7 directly to EMS pim 32. Looking at Rotec's documentation, my guess is that the tach signal is not high voltage. http://www.rotecaerosport.com/faqs/ign-plug/ -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442145#442145 Attachments: http://forums.matronics.com//files/rotec_tach_134.jpg ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.