XVI
2. Erasing the MOB mark ······················································································70
3.5.20 Using the WAYPOINT function [MENU] ·································································71
1. Displaying WAYPOINT ······················································································71
2. Erasing WAYPOINT···························································································71
3.5.21 Own ship display function [MENU] ·········································································72
Switching own ship display ·····················································································72
3.5.22 Function to convert time difference display to latitude/longitude display [MENU] ······72
1. Setting the LORAN chain (base station number) ············································72
2. Setting time difference (TD1 or TD2)·································································73
3. Setting the correction value (of TD1 or TD2) ····················································73
3.5.23 Cursor/own-ship position output function [CSR POS]············································73
3.6 Use of Function Keys ···········································································································75
3.6.1 Overview··················································································································75
3.6.2 Operation procedures ·····························································································76
1. Calling a function································································································76
2. Changing the setting of a function key ······························································76
3. Changing a function key title··············································································76
4. Initializing the setting of a function key (Returning to the factory setting)·········77
Function key menu lists (display only)····································································78
3.7 Other Procedures Required·································································································79
3.7.1 Confirming software versions [MENU]····································································79
3.7.2 Confirming the operating status of connected units [MENU] ·································79
3.7.3 Displaying magnetron current [MENU] [+RANGE-] ···············································80
3.7.4 Confirming error logs [ALARM ACK] ······································································81
3.7.5 Clearing the error log [ALARM ACK] ······································································82
3.7.6 Operating the self-diagnostic function [MENU] ······················································82
3.7.7 Displaying the help menu························································································82
3.7.8 Replacing the battery (BT1) ····················································································83
3.7.9 Procedure if an incomprehensible symptom occurs during use of the radar ········84
3.8 Options ·································································································································85
3.8.1 Operating a second keyboard unit [GAIN/PL] [JOG DIAL] ····································85
Chapter 4 How to Interpret the PPI Screen ································ 87
4.1 Height of and the Distance to the Target ·············································································87
Distance and Target ································································································87
4.2 Returns from a Target···········································································································88
4.3 Propagation Path of Radio Waves·······················································································88
4.3.1 Sea returns ··············································································································89
4.3.2 False echoes ···········································································································89
4.4 Display of Radar Transponder ·····························································································91
Chapter 5 Maintenance and Inspection ······································ 92
5.1 General Maintenance···········································································································92
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