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Table 1.6-2. CP-113 Mode Button Description
Radar Mode
Push Buttons
Description
WX
Places the radar in Weather mode.
WXA
Places the radar in Weather Alert mode. This will cause the areas of highest
displayed precipitation to flash. In some radar systems the color Red will
flash and in other radar systems the color magenta will flash.
In some EFIS display systems this function will not work. These systems do
not have the ability to flash the color on and off. In the RDR-1400C
radar system using an NC-104B, this will also cause Target Alert to be
activated.
NAV
Sequentially selects the following display modes on an Multi Function
Display (MFD):
120
°
sectored mode with no navigation data
120
°
non-map CDI display of navigation data
120
°
map mode display of navigation data
360
°
map mode display of navigation data
RNG (UP)
Increments the selected range to next higher range setting for a sectored map
display on the Multi Function Display (MFD). This is not functional if not
connected to an MFD.
RNG (DN)
Decrements the selected range to next lower range setting for sectored map
display on the Multi Function Display (MFD). This is not functional if not
connected to an MFD.
BCN
Pressing this button will select the two Beacon type formats to be selected.
Sequentially pressing the Beacon button will select the following beacon
modes:
Beacon A, Beacon B, Beacon Off, …
The Beacon modes are as follows:
Beacon A - DO-172 compatible beacon
Beacon B - Standard two-pulse beacon
Beacon Off – Removes beacon identification from the display.
OBS
Selects Omni Bearing Select (OBS) mode on the sector map display on the
Electron Horizontal Situation Indicator (EHSI) and Multi Function Display
(MFD). OBS mode displays aircraft course pointer on weather mode radar
displays. The course pointer position is manually controlled from the CRS
knob on the EFIS display.
SRCH
Pressing this push button selects the three Search modes in sequential cyclic
manner (i.e. Search 1, Search 2, Search 3, Search 1, Search 2, Search 3,
etc.). Search modes are as follows:
Search 1 - Sea clutter rejection. Active on the ten mile range or less.
Search 2 - Short range precision mapping. Active on the ten mile range or
less.
Search 3 - Normal surface mapping
Search mode is compatible with both Beacon mode and Navigation mode.
