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  #11  
Old 12-31-2013, 04:30 PM
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Don Don is offline
 
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Location: Richmond, VA
Posts: 696
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Don't worry, I'm not giving up. I'm just wondering when I'll slap my forehead and think, "Boy was that simple." <g>
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
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  #12  
Old 01-01-2014, 07:15 PM
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Don Don is offline
 
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Let me ask this question another way.

Does anyone know how to upload the VPXUp.dat file to the GRT HX. I uploaded the software update for the GRT HX without a hitch but I have not figured out how to upload the data file.

Thanks!
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
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  #13  
Old 01-02-2014, 06:34 AM
ecurington ecurington is offline
 
Join Date: Nov 2007
Location: Melbourne Florida
Posts: 111
Default I had This Problem

Don,
I was not clear about the software required for VPX communication when I hooked up my VP-X to GRT HX. Below is the response I got from my e-mail request to GRT. Basicly you do not upload the VPXUp.dat file. You update the VPX software via ethernet cable from a computer to VP-X and update the GRT HHUp.dat fileas you did.

GRT Response:
The software and update processes are separate. The HX has software to display VP-X data. The display software is built into the complete HX software and does not update separately. The VP-X has software inside its main box that handles all of its operations and communication with the HX. The VP-X software on our web site is for the original VP-X model, not the Pro or Sport.

The VP-X Pro is designed to be configured and updated by connecting it to a PC and using software provided by Vertical Power. If you can see the VP-X version number and switch states, then at least the EFIS is receiving data from the VP-X. A "NO EXTERNAL DATA" alarm means the VP-X is probably not receiving data from the EFIS. Push the ENG button a few times to see the VP-X page. If the VP-X is configured, but not all of the connections and labels are showing up there, check the serial port wiring and configuration for the output from the HX to the VP-X.

Also, if you have dual displays do not connect both serial ports. Below is the response to that issue. I daisy chained the serial port from the VPX to each efis and had communication errors.

GRT Response:
The VPX requires bidirectional communication to display everything on the EFIS properly, so the best way to get everything is to wire it to one display. The information will transfer over the Ethernet link to the other display (enable Send Vertical Power Data in SET MENU, Inter-Display Link Settings, on the display with the wires). Make sure you physically disconnect the wire from EFIS 2 Out. Turning the serial port output off will not be enough to prevent interference between the outputs.

Best of luck. Most of us had to work through these issues.

Eulice Curington
RV-10
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  #14  
Old 01-02-2014, 09:20 AM
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Don Don is offline
 
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Location: Richmond, VA
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Quote:
Originally Posted by ecurington View Post

GRT Response:
The VPX requires bidirectional communication to display everything on the EFIS properly, so the best way to get everything is to wire it to one display. The information will transfer over the Ethernet link to the other display (enable Send Vertical Power Data in SET MENU, Inter-Display Link Settings, on the display with the wires). Make sure you physically disconnect the wire from EFIS 2 Out. Turning the serial port output off will not be enough to prevent interference between the outputs.

Best of luck. Most of us had to work through these issues.

Eulice Curington
RV-10
I have the VPX connected to only the HX via Serial 8. So far so good. The information won't transfer via Ethernet link to my other display because it is an HS and doesn't have an Ethernet port. I'm not sure what wire is EFIS 2 out but i'm guessing it's the out side of the serial port that connects the HX and the HS. I'd need to ponder what other data I might lose on the HS if I disconnect this wire?but that might be my problem. I'll check it out tonight.

At this point GRT is suggesting the problem is with the VP-X and Astronics still has "limited support" due to their move. My timing on starting to wire my glass panel apparently wasn't exactly opportune.

I appreciate the help and I'll let you know if it works.
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
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  #15  
Old 01-02-2014, 01:14 PM
BobTurner BobTurner is offline
 
Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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Don,

He originally wired the VPX to BOTH efis units, and GRT said not to do that, to remove the connection between the VPX and the second efis. That was the reference to efis-2. You only wired to the HX, so that is not your problem.

I think you are talking about the interdisplay link. Leave that connected.

Eventually you may or may not be able to control the vpx with the HS via the interdisplay link; depends on whether or not the software is there to do it. I don't know.

Bob
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  #16  
Old 01-02-2014, 01:40 PM
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Don Don is offline
 
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Thanks Bob. That clarifies the issue.

I also received a call from Marc Ausman this morning, which was a pleasant surprise. He explained a few more things that were not clear to me. Apparently the software that shows up on the HX is on the VP-X Pro and shows up via the serial link. My serial link is not working which is why I'm not seeing any software. The counter is showing no data passing between the two units.

Marc seemed to be leaning toward the fact that I've mis-wired this connection. When he called I was certain his guess was reasonable but nonetheless wrong. The diagram I used to figure out the pin numbering layout was a male 25 pin d-sub shown in one of the GRT manuals. Looking at the side the wires go into, and orienting the connector with the wide side at the top, the #1 pin is at the top right and 13 is top left, 14 bottom right and 25 is bottom left. I just looked at a pinout diagram of a 25 pin d-sub and darned if I'm not 100% right and wrong at the same time. What I described is perfect for the male connector. The female connector mates to this so the socket side would be identical - and the wire side would have pin 1 at the top left, 13 at the top right, 14 bottom left, and 25 bottom right.

It never occurred to me that the numbering scheme would be different for the male and female sockets. In short they're mirror images of each other so the pin numbers stay the same on both sides of the connector. Here's an image that explains it. http://www.google.com/url?sa=i&rct=j...88782749530523 I'm at work now but this evening when I go home and move 3 wires on my J1 plug, I'm willing to bet the units are going to talk to each other (pins 20 and 22) and my AHRS is going to see 12 volts (pin 2).

I think it's getting very close to time to exclaim "duh" followed by a head slap. Someone on this board signs off with 'smart people do dumb things all the time' and I think I've qualified for this. I sure hope I've found the problem.

And lest I fail to mention it, Marc was kind and patient all the way - he must get tired of dealing with stupid stuff like this - his kindness means a lot - he could have made me feel pretty stupid…which is a about where I am on my own!
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com

Last edited by Don : 01-02-2014 at 02:00 PM.
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  #17  
Old 01-02-2014, 04:39 PM
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Don Don is offline
 
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Location: Richmond, VA
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Default Problem solved

Once I rewired the female d-sub connector correctly (i.e., its the mirror image of the male connector) everything is working. So, it's head slap time, and blush at the dumb mistake. Now to push on and get the wiring done.
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
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  #18  
Old 01-02-2014, 05:10 PM
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: USA
Posts: 3,179
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Welcome to the pin placement club. Good you are on to the next step!
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