Elite PI-121, Operator'S Handbook Manual

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CHAPTER 2: Instructor / Operator’s Station (IOS)
from those list ed (pre vi ous ly saved) and click Open . This
fea ture al lows you to cre ate an un lim it ed library of Meteo
states that can be re called al most instantly.
The two RESET buttons pro vide a
quick way to “zero-out” the METEO
Page . The Meteo RESET returns
all pa ram e ter settings to zero where ap pli ca ble, sets
the Ceiling/Vis i bil i ty to CAVOK, and sets the Al tim e ter/
Tem per a ture to stan dard. The Time In ter vals RE SET
clears all the time interval set tings used for dy nam ic
weath er. The Ref. Meteo Time RESET but ton sets the
Ref er ence Meteo Time back to zero min utes. This is used
in con junc tion with the in ter val set tings to control dynamic
weather as ex plained next.
REFERENCE METEO TIME
The Reference Meteo Time is simply an elapsed time
counter that runs as the aircraft is fl own. The dy nam ic
weather time in ter vals discussed pre vi ous ly use this time
to determine when to begin changing the weath er as set
up by the “From” and “To” parameters. If for example you
set the bot tom layer winds to increase between 005 and
015 minutes and the ceiling to lower be tween 010 and
020 minutes, these chang es will not begin to take af fect
until the Reference Meteo Time reaches 005 min utes. At