When the count down timer reaches zero, you will be informed with a ‘Timer
expired’ message. The timer will then begin to count up, keeping track of how long it
has been since it expired. The timers run, if not altered, anytime the GNC 250 is on.
The GNC 250
clock function
keeps track of both UTC time (Greenwich Mean
Time or Zulu Time calculated from the satellites) and local time, and allows you to
designate which format is used for ETA calculations. The local time and date can be
set without doing a UTC to local time conversion.
To set the local date/time:
1. Press
N
and rotate
O
until NAV Menu 2 is displayed.
2. Press
C
twice and rotate
O
until ‘Clock?’ is highlighted. Press
E
.
3. Use
K
to select either ‘UTC’ or ’local’ time to be displayed in the time fields. Press
E
.
4. Use
K
and
O
to set the local date. Press
E
.
5. Use
K
and
O
to set the local time. Press
E
.
6. Press
C
to complete.
The GNC 250’s
trip timer
will automatically keep track of the duration of your
current trip and can be configured to run when the GNC 250 is on, or when your
ground speed exceeds a specified value (see section 6).
To view or reset the trip timer:
1. Press
N
and rotate
O
until NAV Menu 2 is displayed.
2. Press
C
twice and rotate
O
until ‘Trip time?’ is highlighted. Press
E
. The current
time of day, departure time and time enroute will be displayed.
3. To reset the timer, press
E
. To skip resetting the timer, press
C
.
25
REFERENCE
Comm Features
Entering a local time.
Timer expired message.
Resetting the trip timer.
SECTION
1
NAV KEY
Clock Function/
Trip Timer
250 real 7/14/98 9:32 AM Page 25
