Filter
Top Products
GNS 530(A) Pilot’s Guide and Reference
190-00181-00 Rev. H
14-29
SECTION 14
ADDITIONAL FEATURES
The METAR Request Page has the following user-
selectable fields:
• Format - This eld is used to select between
requesting the raw METAR text (Textual) or
requesting a graphical summary (Graphic) of
several METARS.
NOTE: Textual METARS can only be requested
by identifier or by flight plan (if the flight plan
contains a METAR station identifier).
•
Center - This field allows the pilot to specify
reference points for the request. The following
ve options are available for the ‘Center’ eld:
♦ Current Position - Request METAR data from
the aircraft’s current position.
♦ Look Ahead - Request METAR data ahead of
(along) the current route.
♦ From ID - Request NEXRAD data from a
specic waypoint identier. If ‘From ID’ is
selected as the reference point for the request,
the ‘WPT’ eld is displayed (in place of
‘Position’). The ‘WPT’ eld is used to enter a
waypoint identifier as the reference point for
the request.
♦ From Lat/Lon - Request NEXRAD data from
a specific latitude and longitude. This is only
selectable when requesting from the map. The
‘Position’ eld displays the position of the map
cursor and cannot be edited.
♦ From Flight Plan - Request METAR data from
one of the waypoints in the active flight plan.
This is only selectable when an active Flight
Plan has been selected. The ‘Flight Plan’ eld
(displayed in place of ‘Position’) is used to select
which waypoint in the active flight plan to use
as the reference point for the request.
•
Radius (Graphical requests only) - This eld
selects a request radius from 50 to 250 nautical
miles from the selected position.
•
Position (also WPT or Flight Plan) - ‘Current
Posn’-Position is current, ‘Look Ahead’-Position is
look ahead position. ‘From ID’-Position is from
the ID entered into the WPT eld. ‘Flight Plan’ is
the ID selected from the active ight plan.
•
Auto Request (GDL 49 Only) - This eld is
used to set the time interval for the GDL 49 to
automatically send a NEXRAD data request. The
time options are OFF, 10 min, 15 min, 20 min, 30
min, 45 min, and 1 hour. When an auto request
time is selected, the first request is sent after the
specified time has elapsed from when the field
was set (as opposed to immediately sending a
request).
NOTE: It is recommended that the pilot turn the
Auto Request function ‘on’ by setting it to ‘10 min’
updates. This setting provides best performance
for the GDL 49.
•
The ‘Manual Send?’(GDL 49) or ‘Update Request?’
(GDL 69) eld is used to request METAR Data.
4) Use the small and large right knobs to select
the desired data and the ENT Key to enter the
data into the appropriate fields on the METAR
Request Page.
5) Select ‘Manual Send?’ or ‘Update Request?’
and press the ENT Key. The request has been
sent. Note that selecting ‘Auto Request’
and pressing the ENT Key does not send the
request until after the auto time period.
6) To exit from the NEXRAD Request Page, press
the small right knob. The Data Link Page is
displayed.