IFF POS events.
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Hi,
I’m a little bit confused about POS change option for IFF mode.In Dash -1 page 72:
“It is important to understand that toggling modes will depend on the current state of the mode in the
STAT page. You determine a position where modes will be toggled. Once the aircraft reaches this
position, the mode will be toggled. So if mode1, 2 and 3 are currently on and mode 4 is off as reported
by the STAT page, and you set mode1, 2, 3 and 4 to toggle in the POS subpage, then upon reaching
that position, the system will turn off mode 1, 2 & 3 and turn on mode4.”I start a test: before a position with every modes on and none highlighted in POS page so normaly nothing should change after the position. But in fact, after the position, every modes switch off.
To me, it seems more like that the modes highlighted in POS page are the ones that will be active after the events, no matter their current status in STAT page.Do i miss something ?
Thank you for your help.
PS: please forgive my bad english.
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Hi,
I’m a little bit confused about POS change option for IFF mode.In Dash -1 page 72:
“It is important to understand that toggling modes will depend on the current state of the mode in the
STAT page. You determine a position where modes will be toggled. Once the aircraft reaches this
position, the mode will be toggled. So if mode1, 2 and 3 are currently on and mode 4 is off as reported
by the STAT page, and you set mode1, 2, 3 and 4 to toggle in the POS subpage, then upon reaching
that position, the system will turn off mode 1, 2 & 3 and turn on mode4.”I start a test: before a position with every modes on and none highlighted in POS page so normaly nothing should change after the position. But in fact, after the position, every modes switch off.
To me, it seems more like that the modes highlighted in POS page are the ones that will be active after the events, no matter their current status in STAT page.Do i miss something ?
Thank you for your help.
PS: please forgive my bad english.
You are correct, that is how it is supposed to work. The manual should be corrected.
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I have also read your PDF Pilot’s guide to IFF with the correct explanation.
Now it’s clear to me, thank you for the response.