Decoded VLOC Datablock Busted?
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=1385
Printed Date: 18 May 2024 at 11:04am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: Decoded VLOC Datablock Busted?
Posted By: jimmyz80
Subject: Decoded VLOC Datablock Busted?
Date Posted: 26 Aug 2017 at 12:58am
|
Lately I've been using the "Decoded VLOC IDENT" datablock to keep an eye on navaids that I'm using, and the behavior has been odd to say the least. I can have a VOR tuned in, hear the morse code as clear as day, see the ID properly in the corner of the frequency box, but the datablock will will flicker between being populated with data and being totally blank. I can't imagine it's actually deciding that it can/can't hear the morse code, since the data in the datablock will come and go multiple times within the timespan of one morse code broadcast from the VOR. Please see the attached photo that shows the datablock blank, even though the frequency box has it correctly ID'd. Any idea what's going on here?  ------------- 2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100 |
Replies:
Posted By: bobcain
Date Posted: 26 Aug 2017 at 3:38pm
|
Only a data point, but mine (IFD440) seems to require a really clear and pure signal to decode well. I can decode with my ears long before the radio will. I figured this might be a factor of the radio needing to be really, really sure of what it's hearing. But.... ? |
Posted By: oskrypuch
Date Posted: 26 Aug 2017 at 9:35pm
|
10.2 really improved decoding. Are you updated? * Orest |
Posted By: jimmyz80
Date Posted: 26 Aug 2017 at 11:54pm
Yep I'm on 10.2. The frequency box seems to ID quickly, but as I mentioned the datablock seems to spasm with the data coming and going much more frequently than the morse code would be cycling through. ------------- 2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100 |
oskrypuch wrote:Posted By: oskrypuch
Date Posted: 27 Aug 2017 at 12:12am
|
Ah, the VOR/RAD/DIS datablock? * Orest
|
Posted By: bobcain
Date Posted: 27 Aug 2017 at 8:49am
|
Posted By: jimmyz80
Date Posted: 27 Aug 2017 at 11:57pm
Yep, take a look at the photo I attached. You can see the datablock freaking out, despite the frequency box saying it was ID'd. ------------- 2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100 |
Posted By: LANCE
Date Posted: 28 Aug 2017 at 7:52am
|
When it says "LIB" under the frequency does that mean it's identified the station? I'm thinking that based on proximity it's just getting that from the database that this identifier corresponds with that frequency. I think the only indication that it's identified it properly is the VOR/RAD/DIS datablock.
|
Posted By: 94S
Date Posted: 28 Aug 2017 at 9:40am
It's my understanding that the ID shown in the frequency box is confirmation that the station has been positively identified by the box decoding the Morse, the same as if you'd listened to the Morse yourself. That's one of the handy features of the box. |
Posted By: oskrypuch
Date Posted: 28 Aug 2017 at 3:32pm
+1 * Orest
|
Posted By: jimmyz80
Date Posted: 31 Aug 2017 at 1:05am
That better not be the case, or I might as well lock my plane in the hangar and throw away the key. The datablock couldn't properly ID a navaid even if I pointed to it out the window. :) ------------- 2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100 |