Raymarine RC520, Owner'S Handbook Manual

Page: 173 / 218

Chapter 8: Installation 159
Note: Under normal circumstances you do not need to adjust these settings, as
they are set automatically at the factory. If these parameters are set incorrectly
the performance of the radar will be adversely affected. Access to this menu is
therefore via a hidden key press.
➤
To adjust for correct timing:
1. Select the 1 /
8
nm range.
2. On the radar locate a straight dock, seawall or bridge that is facing your
ship. If the image is bent or bowed, as shown in the following diagram, then
you need to adjust the timing.
Own ship Own ship
Timing early Timing late Normal
D4009-2
Own ship
3. Press the
MENU
key to display the setup soft keys.
4. Press and hold the blank soft key directly to the right of the
RADAR SET UP
soft key for 5 seconds. The Advanced Set Up menu is then displayed.
5. Use the trackpad to move the selection bar down to the Display Timing
option.
6. Use the soft keys to adjust the Display Timing slider. As soon as you start
the adjustment, the menu page is cleared so that you can see the effects of
the adjustment on the radar picture, and the radar is set to
1 /
8
nm range.
7. When the displayed image appears straight, press
ENTER
to return to the
Advanced Set Up soft keys.
8. Press CLEAR to return to the setup soft keys, and CLEAR again to return to
the normal radar screen.
Alternatively, you can use a VRM in conjunction with a target at a known
distance and adjust the picture so the target co-incides with the VRM.
EMC Conformance
1. Always check the installation before going to sea to make sure that it is not
affected by radio transmissions, engine starting etc.
2. In some installations, it may not be possible to prevent the equipment from
being affected by external influences. In general this will not damage the
equipment but can lead to spurious resetting action, or momentarily may
result in faulty operation.
EMC Conformance