Chapter 6 RA83/84/85/93/94/95 Series
Using The Menu
Operation Manual
LIMIT CPA TCPA
This is a warning limit of CPA and TCPA. If the CPA and TCPA figures exceed the set
up limit the assigned warning symbols flash and the audio alarm sounds. Set the
warning limit with the RADAR/LIM CPA or TCPA menu.
6.6.6 VECT TIME (Selecting the Vector Time)
This function is used to set up the length of a vector that predicts the position of a
target after preset time. Set with the RADAR/TRUE (REL) VECT menu.
6.6.7 EPA symbols
Acquisition symbols
The symbol for the plotted target changes as follows according to the plotting status:
This symbol appears when a target is plotted for the first time.
This symbol appears when a target is plotted for more than two points. A
vector develops and the target data can be displayed when its target
number is assigned (highlighted).
This symbol appears when a target is plotted for more than two points
with its target number assigned. The target data is shown in the right
side of the screen.
Warning symbols
The following symbols are used in the EPA functions to notify the operator of a
high-risk target or invalid plotting. These symbols will blink when they are shown.
This is a CPA alarm symbol that appears when a plotted target is
predicted to infringe a predetermined CPA and/or TCPA range. The
symbol blinks at an interval of 0.5 seconds. The data can be
displayed by assigning the target number.
This is a CPA alarm symbol that appears when the relevant target
number is assigned. The rest of the features are the same as above.
This is an Unreliable Plot symbol that appears when a target is not
plotted over 10 minutes. The on-screen error message “UNRELIABLE
PLOT DATA” will also appear on the screen. In approximately 15
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