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  #1  
Old 04-09-2021, 07:48 AM
Jeeper Jeeper is offline
 
Join Date: May 2017
Location: Conroe, Tx
Posts: 14
Default ADSB Out -SIL error

Got a 430W feeding a 330ES transponder. All latest software updates, pin connects are correct. Getting a continuous SIL error on the ADSB Performance Report. Any thoughts on cause ? Mike
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  #2  
Old 04-09-2021, 10:04 AM
OKAV8r OKAV8r is offline
 
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SIL should be set to equal 3
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  #3  
Old 04-09-2021, 11:12 AM
BH1166 BH1166 is offline
 
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Location: Eatonton Georgia
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Default SIL

SIL <3 is a gps error

Good SIL is > or equal 3

To be acceptable in the United States, the following performance has to be demonstrated:
• NACp ≥ 8
• NACv ≥ 1
• NIC ≥ 7
• SIL ≥ 3
• SDA ≥ 2

NIC – Navigation Integrity Category, which specifies an integrity containment radius around an aircraft’s reported position

• SIL – Source Integrity Level indicates the probability of the reported horizontal position exceeding the containment radius defined by the NIC

I’m not a garmin user, so I’m guessing 430W means it is a WAAS gps.

Bet issue is a setup issue. Would think others with same setup (gps source and transponder can help u sort it out.
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  #4  
Old 04-09-2021, 12:26 PM
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jrtens jrtens is offline
 
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Make sure the RS-232 channel 1 output on the 430W is set to ADS-B Out +.
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  #5  
Old 04-09-2021, 02:14 PM
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bjdecker bjdecker is online now
 
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Make sure the GPS Integrity (INTGRTY) is set to 1E-7
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  #6  
Old 04-15-2021, 07:25 AM
Jeeper Jeeper is offline
 
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Location: Conroe, Tx
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Default INTGRTY 430W

I can not find a menu selection for INTGRTY in the 430W. Looking for the set up process to get to this page in the 430W......Thanks, Mike
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  #7  
Old 04-15-2021, 08:20 AM
RVDan RVDan is offline
 
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IIRC, there was a 430W software update necessary for the current ADSB requirements. If you 430W is old it may need this.
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  #8  
Old 04-15-2021, 09:28 AM
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g3xpert g3xpert is offline
 
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Location: Olathe, KS
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Default GPS Integrity Setting

Quote:
Originally Posted by Jeeper View Post
Got a 430W feeding a 330ES transponder. All latest software updates, pin connects are correct. Getting a continuous SIL error on the ADSB Performance Report. Any thoughts on cause ? Mike
Hi Mike,

The GPS configuration page accessible in configuration mode on the GTX 330ES, allows you to specify the GPS integrity setting, which should be 1e-7 for your installation.



This link provides a good overview of the settings and software levels required to make this datapath work.

Let us know if you have all of this covered and are still having issues.

Thanks,

Justin
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Last edited by g3xpert : 04-15-2021 at 09:29 AM. Reason: Clarity
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