Network Computing Devices JRC 1500 MKII - Manual (Page 27)

20 INSTALLATION
PUSHING
DISPLAY TIMING EARLY
CORRECT
PULLING
DISPLAY TIMING LATE
3.7.5 RELATIVE BEARING ALIGNMENT
This step must be performed. Failure to do so may result in incorrect bearing
readings.
Set the range to 1.5 NM.
Identify a suitable target such as a buoy and position the boat between 0.5
NM and 1 NM.
Point the bow at the target.
In the INITIAL SET UP MENU select BEARING.
Locate the target on the display.
Move the marker over the target.
Press the JOYSTICK once.
Move cursor back to the SHM (Ships Heading Marker is the solid vertical
line on the display).
Press JOYSTICK in when done.
3.7.6 DISPLAY TIMING
This step must be performed. Failure to perform this step may result in incor-
rect target distance reading.
Set the range to 0.25 NM.
Locate a pier, a jetty, a bridge (close to water line) or any other straight
object. Position the vessel so that it appears on the display. It does not
matter which way you are facing.
In the INITIAL SET UP MENU select DISPLAY TIMING.
If the bridges, pier or jetty does not appear to be in a straight line on the
display, then the DISPLAY TIMING needs to be adjusted.
Use the JOYSTICK to adjust the timing and make the object appear straight
on the display.
Press JOYSTICK when done.