JRC JLN-650 - Page 103

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4
Track Standard: Doppler/GPS
・Function・ The track standard is data that becomes a standard to display the ship track on the [PLOT]
screen. This selects GPS or Doppler from the menu.
When the track standard is Doppler, a numeric scale is not displayed in the latitude line
and longitude lines on the [PLOT] screen.
Doppler: The movement zone is guessing calculated from the Doppler data (course and
ship speed), and the track is displayed.
GPS: The track is displayed from the latitude longitude data from GPS.
Operation Standard Menu: Plot screen setting menu/Track standard: Doppler/GPS
Selection Frame Menu: Plot drawing menu/Track standard: Doppler/GPS
・Display of track standard and plot screen・
Whether the track standard is GPS or Doppler, the display of the [PLOT] screen is different.
Connect the GPS sensor, and make the setting of the track standard GPS when the
latitude line and longitude lines are displayed, and the ship position and the track are
displayed clearly.
Table 4.4.1 Track Standard and Plot Screen
Track
Standard
（Menu
Setting
）
ＧＰＳ
Connection
Display of Plot Screen
latitude line ・
longitude line
Scale mark
of NM unit
Latitude
longitude
data
Display at date Track
Current
Vector
ＧＰＳ
with
Display
Display
Display
Automatic Input
Display
Display
without Display Display ＊＊＊
①
When the power
supply is turned on, it
inputs from the menu
by manually.
Non-display Non-display
Doppler
(*1
）
with
Display
Display
Display
Automatic Input
Display
Display
without
Display
Display
＊＊＊
Same as
①
Display
Display
Reduced Scale
・Function・ The reduced scale of track [PLOT] screen is set. The standard can be set within the range
of 1/1,000 - 1/1,000,000.
The value of the reduced scale is displayed at the center of the [PLOT] screen lower
position.
Setting value: [1/10000] The numerical value in the hatching part is selected with the
key, and it fixes with the [ENT] key.
Operation Standard Menu: Plot screen setting menu/Reduced scale: 1/10000
Selection Frame Menu: Plot drawing menu/ Reduced scale: 1/10000
Storage Interval
・Function・ The track can be reproduced by saving data at the same time as the track's being plotted
on the screen every second. The storage interval of GPS and the Doppler data in case of
saving data of time can be set.
Setting value: [6 15 30 60 120 240] sec
Operation Standard Menu: Plot screen setting menu/Storage interval: 6 sec
Selection Frame Menu: Plot drawing menu/Storage interval: 6 sec
・Relation between storage interval and storage time・
The storage interval synchronizes with "Storage time of the [GRAPH] screen" (*2). Set the
storage time of the [GRAPH] screen to the value for a short time according to the table
below when you want to shorten the storage interval of the [PLOT] screen.
[PLOT] Screen:
Storage Interval
６ sec １５ sec ３０ sec ６０ sec １２０ sec ２４０ sec
[GRAPH] Screen:
Storage Time
０．５ hour １ hour ３ hour ６ hour １２ hour ２４ hour
*1 The prow bearing sensor such as GPS compasses is necessary to display the prow bearing.
*2 The storage time of [GRAPH] screen setting is given to priority. When the storage time will be set in a long time, the storage
interval of the [PLOT] screen becomes long.
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