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ADS-B Performance Report

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=1529
Printed Date: 17 Oct 2018 at 3:29am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: ADS-B Performance Report
Posted By: JimC
Subject: ADS-B Performance Report
Date Posted: 09 Jun 2018 at 2:08pm
I have a Garmin GTX330ES with a IFD440 as Nav Source.
To the best of my knowledge the system has been working fine for at least the last 1.5yrs. For grins I ran an ADS-B performance report yesterday and noticed that I have an SIL error showing up.

I cannot decode what data might be missing. Any suggestions as a starting point?
 
EXCEPTIONS:
NIC=NO
NACp=NO
NACv=NO
SIL=YES
SDA=NO
 
INTEGRITY & ACCURACY
Category      NIC       NACp      NACv     SIL          SDA
% Fail          0.00%  0.00%     0.00%   100.00%  0.00%
Max dT        00:00   00:00      00:00    01:57       00:00
MCF             0            0             0       7104          0
Avg             9.0        10.0         2.0       1.0          2.0
Min              8            8              1         1             2
Max             9           10             2         1             2
 
AIR on GROUND
% Fail  2.50%
Max dT 00:03:01
MCF     150
 
The forum would not let me post an image but one is attached and available at this url:
 
https://ibb.co/gNa1Q8" rel="nofollow - https://ibb.co/gNa1Q8



Replies:
Posted By: Cruiser
Date Posted: 09 Jun 2018 at 4:55pm
SIL is source integrity level. The only acceptable level is "3" you are broadcasting "1"

The IFD440 is certified to broadcast at "3" so there is a configuration error, probably in the GTX330es. Make certain the GPS Integrity is set to 1E-7. This setting is on the GPS Configuration page.



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