1-5
DISPLAY UNIT
ITEM FR-2155
Picture Tube PPI (Raster scan, Daylight display)
Range Scale (nm)
0.125 0.25 0.5 0.75 1.5 3 6 12 16 24 32 48 120
Range Ring lnterval
0.0250.050.10.250.250.512448820
Number of Rings
5553666646466
Bearing Resolution 1.18 deg. (XN4A), 0.98 deg. (XN5A)
Range Discrimination Better than 31 m
Bearing Accuracy +1 deg to –1 deg.
Minimum Range Better than 23 m (0.25 nm range)
Range Ring Accuracy
VRM Accuracy
1 % of range or 15 m, whichever is the greater
I/O Ports
IEC-61162-1 port (two inputs, J450/J455)
IEC-61162-1 output port (J450) : $RAOSD, $RARSD, $RATLL
ARPA data output port (J454) : IEC-61162-1, $RATTM, ARP-26 required
RS-232C port (input/output, J456) : System program updating
Gyro port (input, J446) : AD100 format
Speed Log port (input, J448) : Contact-closure signal
Alarm output (J452) : +12 V buzzer drive signal
Remote Display port (two outputs, J442/J443) : TRU-HD, BP, TRU-TRIG,
VIDEO
EXT. ARPA port (output, J444) : ARPA-HD, ARPA-BP, ARPA-TRIG, ARPA-
VIDEO
Interswitch port (J457/J458) : For RJ-7
Monitor port (J449) : For PC monitor, Buffer PCB required
NAV Data Input
IEC-61162-1/NMEA 0183
Own ship’s position : GGA>RMC>RMA>GLL
Speed : RMC>RMA>VTG>VHW
Heading (True) : VHW
Heading (Magnetic) : VHW
Course (Trne) : RMC>RMA>VTG
Course (Magnetic) : VTG>RMC>RMA
Waypoint (Range/Bearing) : RMB>BWC>BWR
Time : ZDA
Loran time difference : RMA>GLC>GTD
Water depth : DPT>DBT>DBK>DBS
Water temperature : MTW>MDA
Standard 1.40 m
Compass safety
Distance
Steering 1.05 m
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