Select the Speed Log Output parameter using ∧ ∨ Press ENTER.

2. Use ∧ ∨ to select the desired speed log output frequency in the drop-down list. Press ENTER when done.

3. Press function key Apply and Exit when done. Restore factory default setting

1. Use ∧ ∨ to select the port to return to the factory default setting. 2. Press function key Get Default.

Config Mode - Port Rate Config

View received data

1. Select serial port to view received data on using ∧ ∨. It is not possible to view received data on User Port 2, as it only supports output data.

2. Press function key View Raw Data. The following view is displayed.

3. Use function key Freeze to stop the update of raw data on the screen. Use

Resume function key to view more data. 4. Press ESC when done.

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Config Mode - System Info

System Info

The System Information view provides subviews for general system information. It con- tains subviews for: viewing software and hardware versions, displaying the results of the R4 Display’s last performed built-in integrity tests and for viewing the current memory usage of the R4 Display.

View software and hardware versions

1. Press the function key SW/HW Versions. 2. The below view is displayed.

The view shows the software versions of the different components present in the R4 Dis- play and R4 Navigation Sensor as well as the display’s hardware revision and GPS mod- ule serial number. The current system configuration—GPS or DGPS—is also indicated at the top of the screen.

View the result of the R4 Display’s last performed built-in integrity tests 1. Press function key Display BIIT Info.

Config Mode - System Info

View current memory usage of the R4 Display 1. Press function key Memory Usage.

2. The Memory Usage view is shown, as illustrated below.

The memory usage is measured for:

• Route Database percentage of number of routes used • Waypoints in Routes percentage of route storage used • Waypoint Database percentage of waypoint storage used • MoB Waypoints percentage of MOB waypoint storage used • DGPS Message percentage of DGPS message storage used

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Appendix

Alarm Messages

The alarm messages that can occur in a R4 Navigation System are listed below.

Navigation Alarms Description NAV: HDOP Limit Exceeded

This alarm is active when the HDOP (horizontal dilution of precision) exceeds 4.0. NAV: Position Data Lost

This alarm is active when no valid position information is available from the R4 Naviga- tion Sensor.

NAV: DGPS Position Data Lost

This alarm is active when a differentially corrected position is not available. NAV: GPS Not Initialized

The alarm is active when the display is not able to configure or receive the current con- figuration from the R4 Navigation Sensor.

Table 1: Navigation Alarm Messages

ID Message

151 NAV: HDOP Limit Exceeded 152 NAV: Position Data Lost

153 NAV: DGPS Position Data Lost 154 NAV: GPS Not Initialized 155 NAV: GPS Connection Lost 156 NAV: XTE Limit Exceeded

157 NAV: Approaching Waypoint (Distance) 170 NAV: Approaching Waypoint (Time) 159 NAV: Serial Waypoint Download Failed 160 NAV: Serial Route Download Failed 161 NAV: Heading Data Lost

162 NAV: Depth Data Lost 163 NAV: RAIM Status - Caution 164 NAV: RAIM Status - Unsafe

166 NAV: Redundant System Connection Lost 167 NAV: Anchor Alarm Distance Exceeded 168 NAV: Scheduled Alert

Alarm Messages

NAV: GPS Connection Lost

This alarm is active if the communication between the GPS and the display unit does not work.

NAV: XTE Limit Exceeded

This alarm is active if the current cross-track error is greater than the configured cross- track error limit.

NAV: Approaching Waypoint (Distance)

This alarm is active when the distance to next waypoint is shorter than the approach dis- tance configured in the Nav Config view, described on page 103.

NAV: Approaching Waypoint (Time)

This alarm is active when the estimated time to go to next waypoint is shorter than the waypoint approach time configured in the Nav Config view, described on page 103. NAV: Serial Waypoint Download Failed

This alarm is raised if serial download of waypoint information has failed. NAV: Serial Route Download Failed

This alarm is raised if serial download of route information has failed. NAV: Heading Data Lost

This alarm is active when no valid heading data is received. NAV: Depth Data Lost

This alarm is active when no valid depth data is received. NAV: RAIM Status - Caution

This alarm is active when the RAIM status is caution. NAV: RAIM Status - Unsafe

This alarm is active when the RAIM status is unsafe. NAV: Redundant System Connection Lost

No connection to an external R4 nav system in redundant system configuration. NAV: Anchor Alarm Distance Exceeded

This alarm is active when the anchor watch function is in operation and the range limit has been exceeded.

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Alarm Messages

• Station Unhealthy: Beacon has been selected as correction source for GPS and the radio beacon station in use indicates an unhealthy status.

• Station Unmonitored: Beacon has been selected as correction source for GPS and the radio beacon station in use indicates an unmonitored status.

• Poor Signal: Beacon has been selected as correction source for GPS and word error rate of the received signal in use exceeds 10%.