Standard Horizon CP500 - Manual (Page 70)

Page 72 CP500
ASF1/2 : Additional Secondary phase Factor (TD Coordinate System)
Correction to TD1/2 values which can be inserted by the user to take in account the additional
signal propagation delay aver a mixed land/seawater path compared to on all-seawater path.
The user should enter delay values to fine adjust the position calculated.
Alter : Alternate Solution (TD Coordinate System)
Parameter selected by the user that is applied in the conversion of geographical coordinates Lat/
Lon to TD values. To be used if the position displayed is roughly not correct.
13.2 COMPASS
The GPS Chart Plotter computes compass direction from the constellation of GPS
Satellites. For the GPS Chart Plotter to compute direction the vessel must be moving
through the water. This menu allows the GPS Chart Plotter to customize the following
selections:
Bearings : Selects between True and Magnetic. When Magnetic bearings is enabled, the GPS Chart
Plotter applies the selected Magnetic Variation (Auto or Manual, see next paragraph) to
compute True bearing.
Variation : Allows the user to select Auto or Manual. When Auto mode is selected the GPS Chart Plotter
computes the offset by the current GPS fixed location. Manual mode allows the user to enter
in a magnetic variation that is applied in the True conversion.
Calibration : This function allows a user to enter in the offset for areas that the vessel may cruise instead
of entering in a manual offset for one location. This offset is useful for cruising vessels or
vessels that travel internationally often.
Figure 13.2 - Compass Table
13.3 ALARMS
This menu is used to select and setup audible and visual Alarms. Available alarms are
Arrival, XTE, Depth, Anchor and Grounding Alarm.
Arrival Alarm : Alerts when the vessel is approaching a single destination point or when arriving at a leg
in a Route. Available selections: 0.00 to 9.99NM.
XTE Alarm : Alerts when the vessel is deviating from a defined course. Available selections: 0.00 to
9.99NM.
Depth Alarm : Alerts when the received depth Value from the optional FF520 50/200kHz BLACK BOX
FISH FINDER or Depth Finder inputting NMEA data into the GPS Chart Plotter is lower than
the selected value. Available selections: 0000 to 3000 FT.
Anchor Alarm : Alerts when the ships moves off a selected locations by a selected distance. Available
selections: 0.00 to 9.99NM.
Audible Alarm : Enables or disables the alarm beep.
Grounding Alarm : This function looks ahead of the vessels heading to see if a potential danger exists. When
the Grounding Alarm is enabled the GPS Chart Plotter will draw a triangle in front of the vessel
on the Chart page showing the area that is being searched as shown below. The depth and
range (distance) of the area the GPS Chart Plotter looks ahead for a shallow area can be set
using this function.
Grounding Alarm Range : This function allows setting the distance of the grounding alarm zone (the length of the sector
to be detected) among the 0.25, 0.5, 1.0 Nm selections. When a depth or any of the searched
objects is found in the scanned area, a tick marker is printed on the relative box in the Grounding
Alarm Report page to identify which dangerous objects have been currently detected.
Grounding Alarm Report: This function allows displaying a report of the dangerous objects currently detected.
NOTES
The Grounding Alarm function only operates with the new NT + /MAX C-CARDs. It also affects the