Specifications

SECTION III
MODEL 560 INSTRUMENTATION AND AVIONICS
RCT Alternate action pushbutton enables the Rain Echo Attenuation Compensation
Technique (REACT) blue background field to indicate ranges at which the
receiver calibration has been exceeded. The REACT OFF condition is
annunciated above the button.
STAB Alternate action pushbutton permits disabling the antenna stabilization causing
the display to vary with airplane attitude. When disabled, the OFF condition is
annunciated above the pushbutton.
TGT Alternate action pushbutton enables the target alert function.
SECT Alternate action pushbutton selects either full azimuth scan angle (120 degrees)
or sector scan (60 degrees).
DISPLAY ANNUNCIATIONS
The different mode annunciations shown below in Figure 3-36 are annunciated in the mode field.
The mode field is on the lower left side of the PFD display. Below the mode field is the antenna tilt angle
display which is preceded by a blank for positive values and a “- ” for negative values. Directly below the
tilt display are the target mode annunciation or the variable gain indicator. When target mode is selected, a
green TGT annunciation appears on this line. When the receiver/transmitter (R/T) detects an alert condition
the TGT turns to amber as long as the alert condition persists. Variable gain indication is annunciated by
an amber VAR in the same field as the target alert, however, target mode/alert has the higher priority.
When full compass mode and WX are turned on, a magenta TX will be displayed in the mode field. Also, if
WX is failed and in test mode, an amber FAIL will be displayed in the mode field, and a failure code in the
tilt field. If more than one code is associated with the failure, the numbers toggle between different fault
codes.
Figure 3-33. PFD WX Radar Operating Mode Annunciations
OPERATING
MODE
FEATURE
SELECTED
DISPLAY
MODE
ANNUNCIATION
™ TGT” AREA
WAIT ANY SELECTION WAIT (Green) ---
STANDBY --- STBY (Green) ---
FORCED
STANDBY
--- FSBY (Green) ---
TEST --- TEST (Green)
or FAIL (Amber)
---
WX NONE
VAR
TGT
RCT
RCT/TGT
WX (Green)
WX (Green)
WX (Green)
RCT (Green)
RCT (Green)
---
VAR (Amber)
TGT
---
TGT
FLIGHT PLAN NONE
FPLN/TGT
FPLN (Green)
FPLN (Green)
---
---
GMAP NONE
VAR
GMAP (Green)
GMAP (Green)
---
VAR (Amber)
I 56OMB-01 Configuration AA 3-69