My procedure..

- tune in nav2 the vor/dme
- enter in a empty or previous position the lat/non by starting key 7&9 right click
- i see a flasing 0
- then right click 3 &9
- press 2
-  enter elevation, 0 and insert
- press wpt chg and enter the waypoint numer and press insert

NO flag on the dme update gauge... what went wrong ?

could be, but that is not what I told you

according to the tutorial:

6 - SINGLE DME UPDATING
Left ZIZZI and approaching SWL VOR/DME we move any CDU data selector to
DSRTK/STS and we notice that the ACCURACY PERFORMANCE INDEX (API) is arrived
at value 9 (the worst accuracy index). It's time to find an off track DME to carry out DME
UPDATING.
On the chart we find, on the RH of our track, SBY (Salisbury) VOR/DME freq.111.20.
When SBY VORDME is received by our VHFNAV2 we read its position on the navigation
chart: LAT N38°20.7 LONG W75°30.6 we are able to perform a single DME updating.
We choose by the WAYPOINT/DME selector of CDU#2 the position where we want insert
the SBY DME coordinates. Our choice is position#1. Moving the CDU data selector to
WAYPT and pushing simultaneously on the INS keyboard the keys 7&9 (right mouse click
first on key 7 and then on key 9) we enter the DME UPDATE mode and on the FROM-TO
display we see a flashing 0.
We insert now the SBY coordinates in the same way we did before for the waypoints.
After that we push now simultaneously the keys 3&9 (right mouse click first on key 3 and
then on key 9). With this new pushing we entered the DME elevation mode. SBY elevation
is very low (10ft) so we can accept as DME elevation zero. Now by the key 2 pushing we
give the signal at INS that the next insertion will be the DME elevation, after that we push 0
and INSERT. By this last manouver we exit the DME elevation mode.
Moving the CDU data selector to DIS/TIME we can also check the distance received by our
DME receiver and the distance calculated by the INS. They should be quite same except a
little difference consisting the INS accumulated error. If they are matching the coordinates
insertion has been correct and we can proceed to command the DME updating by pushing
in sequence WPT CHG, then the key 1 and if 1appears on FROM-TO display INSERT. After
few seconds the DME UPDATING GREEN FLAG#2 will be in view and from now on the
single DME updating is effective. To exit the DME UPDATE mode (not DME UPDATING)
we have to move the CDU data selector in all position but WAYPT and DIS/TIME.
During the Single DME updating we can ensure, selecting DSRTK/STS on the CDU data
selector, that the DME updating is operative watching at the accuracy performance index
(API) decreasing. The INS 3 accuracy performance index should start to decrease and
follow the others, one index late, being the DME updating acquired first by the INSs 1 and 2
and then transmitted to INS 3. The best reachable accuracy index in flight is 1.
When SBYis not longer receivable the DME UPDATING automatically should be terminated
and the relative DME UPDATING GREEN FLAG#2 goes out of view.
Now at our RH we have HRC (Harcum) VOR/DME freq.108.80, position: LAT N37°26.9
LONG W76°42.6. In the same way we did before we can repeat the SINGLE DME
UPDATING and maintain the INS accuracy indexes low to perform a better navigation


So where it went wrong ? I dint try to enter it at 0, but at 7, but it goes back to 0 ??

puzzled here!

Thanks Gian..

I will test this again and report my findings.
In the past I managed to do this, but was a year or more back.. maybe I forgot.

I use it now with my 2 person, 2 mon setup..
btw any help on my wiper problem at the avsim forum ?
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Hi,
MI stands for MODE INDEX.Mode index 4 is the mode necessary to the INS to perform the TRIPLE MIXING and the DME UPDATING.
Have a look at FS/CIVA/DOCS/OPERATION MANUAL
At chapter 5 CONDITIONAL PROCEDURES the first check to do for both procedures TRIPLE MIXING and DME UPDATING is to verify that the INS is in the MI 4.
Gianfranco