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2. RADAR OPERATION
2-13
ZOOM &
D. BOX
12/
HU
3nm
LP
319. 9
°
M
Zoom area
Zoom window
Requires optional
ARP Board in
Model 18x40-BB/19x4-BB
series network radar.
Not shown otherwise.
359.9 ˚R
5.727
nm
+
RETURNE
D
D. BOX
ON
/
OFF
A
ZOOM
ON
/
OFF
B
CURSOR
FLOAT
ARP
TGT ZM
C
Zoom
2.15.2 Zooming ARP, TTM targets
You may zoom in on TTM (Tracked Target Message) and ARP targets. TTM targets can
come from a NavNet connected radar, or from other ARP radar that is outputting the TTM
message. (TTM is a NMEA 0183 data sentence that is an available output from some ARP
capable radar.) Target numbers must be turned on to use this function. This can be done by
enabling the target ID number option in the ARP SETUP menu. This function is available
when TARGET ID NUMBER is ON.
1. If not displayed, press the HIDE/SHOW key to show the radar soft keys.
2. Press the E: ZOOM/D. BOX soft key to show ZOOM & D. BOX soft keys.
3. Press the A: ZOOM ON/OFF soft key to select ZOOM ON.
4. Press the C: ARP TGT ZM soft key.
▲
▼
1
SELECT TARGET NO.
Target no. selection window
5. Use the ENTER knob to select number (1-10), then push the ENTER knob. If the target
number does not exist several beeps sound and the zoom function is cancelled.
.
To cancel, press the B: CURSOR LOCK soft key.
Note: The zoom window blends in with the background when the background color for the
radar picture is white. If the window is difficult to see, change the background color.