17 arpa performance test – Furuno FR-2125V User Manual
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5.17 ARPA Performance Test
Test program is provided for assessing the ARPA overall performance. Note that normal
operation is interrupted and the label “XX” is displayed at the bottom of the screen during
this test. The test may be terminated at any moment.
To execute the performance test:
1. Select the north-up presentation mode on the 12 nm range.
2. Enter own ship speed of 0 knots.
3. Press the [PLOT MENU] key followed by the [0] key to show the ARPA 2 menu.
4. Press the [9] key to select ARPA TRACK TEST.
5. Press the [ENTER] key.
An alert XX flickers during the test. It takes approximately three minutes for all vectors
to be displayed. The test does not need echo signals, gyro nor speed log input. Seven
targets having different speeds and courses, as shown in the table below, are simu-
lated automatically.
6. The test continues for five minutes and then repeats.
To terminate the track test, press the [STBY/TX] key. The STBY display appears.
Select any target with the cursor and check that the selected target shows the course and
speed as in the table. CPA and TCPA shown below are initial values which change with
time.
t
e
g
r
a
T
e
s
r
u
o
C
)
t
k
(
d
e
e
p
S
)
m
n
(
A
P
C
)
n
i
m
(
A
P
C
T
A
t
e
g
r
a
T
T
°
0
.
0
9
0
.
0
1
0
.
1
4
.
0
1
B
t
e
g
r
a
T
T
°
0
.
0
0
.
0
0
.
4
—
C
t
e
g
r
a
T
T
°
0
.
0
8
1
0
.
0
1
7
.
1
2
.
8
2
D
t
e
g
r
a
T
T
°
5
.
6
1
2
8
.
3
2
9
.
0
0
.
5
1
E
t
e
g
r
a
T
T
°
5
.
3
7
2
2
.
4
1
0
.
6
5
.
2
2
F
t
e
g
r
a
T
T
°
0
.
0
8
1
0
.
0
2
0
.
0
0
.
0
3
G
t
e
g
r
a
T
T
°
6
.
4
2
6
.
5
1
0
.
4
6
.
3
4
000
010
020
030
040
050
060
070
080
090
220
240
250
100
110
120
130
140
150
160
170
180
190
200
210
230
260
270
280
290
300
310
320
330
340
350
F
C
B
A
G
E
D
XX
+
Figure 5-16 ARPA performance test values
Note: Target numbers are subject to change. If test results show any deviation from the
above, consult with your service representative.