Beechcraft C-12C Operator And Technical Reference Manual page 551

3C-28. RADAR GRAPHICS
a. Description. The KGR-358 radar graphics
unit interfaces with the weather radar system
(KWX-58) and receives navigation data from the flight
management system. The unit can display NAV 1 or
NAV 2 or both in a weather overlay, or as navigation
information only display. In addition, NAV information
can be viewed in a 360° (circle) display with weather in
the top 90° sector. Two checklist modes are also
provided for complete checklist capability when using
the pocket terminal.
(1) With the KGR-358 in any of the NAV
modes, the radar screen will display a normal weather
picture, plus the location of the waypoints listed in the
active flight plan. Data referenced to NAV 1 is
displayed in the lower left portion of the radar display.
Data referenced to NAV 2 will display in the lower right
portion of the display. Included in the data are the
active waypoint name, the selected course bearing,
and the aircraft position (radial to and distance) from
the active navigation fix. Aircraft magnetic heading is
displayed in the upper left section of the radar display.
(2) A line representing the course selected
by the flight management system is drawn through the
corresponding active waypoint.
bearing for each NAV system is displayed with NAV
data on each side of the screen. A waypoint line will
also be displayed connecting the waypoints in
numerical sequence.
screen indicates all visible NAV aids selected by the
flight management system will be displayed. The level
of NAV aids displayed is indicated by one, two, or
three dots on the left side of the R.
(3) A joystick control is provided to move a
waypoint to any position on the screen.
coordinates for this new waypoint will appear in the
lower left or right corner, depending on which NAV is
selected replacing the active waypoint data. If both
NAV systems are selected, the new coordinates will be
displayed corresponding to NAV 1 and may be
switched to NAV 2. Pressing the check button will
cause the data to transfer to the flight management
system and be fixed as a position on the earth. Once
the data is transferred to the flight management
system, the pilot may enter it as he desires.
(4) A track line enables a quick determination
of how many degrees deviation left or right of a
present heading is needed to provide for a clear path
through weather or to a new fix.
degrees and an L or R is shown in the upper left
corner replacing the magnetic heading when track
mode is in operation.
T1 .
Selected course
An R on the left side of the
The number of
(5) Power is provided for the unit through a
2-ampere circuit breaker, placarded GRPH DSPL,
located on the overhead circuit breaker panel.
b. Controls and Functions.
3C-145.
(1) Mode Selector Knob. Allows the operator
to turn the unit on and select desired mode.
(a) OFF – Removes power from the unit
when mode selector knob is in the OFF position.
(b) EMER – Checklists of emergency
procedures for the aircraft are displayed in the
emergency (EMER) mode.
contains the titles of the emergency checklists. The
selected checklist item is shown in yellow while the
others are shown in magenta.
(c)
checklist for display.
(d) SBY – Selects the standby mode.
Nothing is displayed on the screen when in the SBY
mode.
(e) NAV 1 – Selects NAV 1 information
to be displayed. Data referenced to NAV 1 will be
displayed in cyan in the lower left portion of the radar
display. If NAV data is invalid, the data will be
replaced with dashes.
(f) NAV 2 – Selects NAV 2 information
to be displayed. Data referenced to NAV 2 will be
displayed in yellow in the lower right portion of the
radar display. If NAV data is invalid, the data will be
replaced with dashes.
The
(g) BOTH – Selects both NAV 1 and
NAV 2 information to be displayed.
(2) Left/Right Cursor Buttons. When  or Ÿ
is pressed, a track line will appear and move in the
direction indicated by the button pressed. The track
line will disappear 6 to 10 seconds after the button has
been released.
(3) Joystick. The joystick is used to move a
waypoint to any position on the radar screen.
(4) CANCEL Button.
CANCEL button will remove displays from the radar
screen.
TM 1-1520-218-10
Refer to Figure
The emergency index
✓
LST – Selects the preprogrammed
When pressed, the
3C-197