Furuno FR-2155, Service Manual

Page: 35 / 152

2-21
2.22 ARPA INITIAL SETTING MENU
Accessing Menu for ARPA Initialization. Press the [RADAR MENU] key five times while pressing and
holding down the [HL KEY] key.
ARPA INITIAL SETTING Menu
(Keying sequence : [PLOT MENU] [0] [0])
TARGET SELECT
Selected is minimum size of target echoes which will be judged as land.
An echo judged as land cannot be acquired manually or automatically nor is lost target
status generated. This discrimination is especially necessary on the S-band radar where the
horizontal beamwidth is greater than that of the X-band radar.
The settings and their specifications are as follows :
0 : Greater than 600 meters
1 : Greater than 800 meters
2 : Greater than 1200 meters
3 : Greater than 1600 meters
4 : No limit
QV SELECT
Requires no local adjustment; however, it judges whether an echo is land or not by painting
echoes in varying intensity or color. To enable QV SELECT, remove jumper JP11 on the
18P9002 board:
0 : All echoes painted brown (same as QV on previous radars)
1 : Brown color (non-land echoes) Yellow color (land echoes, azimuth direction)
2 : Brown color (non-land echoes) Yellow color (land echoes and target echoes behind
land echoes)
3 : Brown color (all echoes) Yellow color (leading and trailing edges of all echoes)
[ARPA INITIAL SETTING]
1. ARPA (2)
2. TARGET SELECT
0/1/2/3/4
3. TRACK RANGE
24/32
4. QV SELECT
0/1/2/3
5. TGT OUTPUT DATA
OFF/REL/TRUE
6. DISP CPA, TCPA DISPLAY
OFF/ON
7. START TIME TARGET VECT
1 MIN/20 SCANS
8. TARGET DATA
REL/TRUE
9. ARPA PRESET
FR2115-SME-17