Raymarine Radome Scanners - Manual (Page 23)

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Set up, alignment and timing checks
Switch on and initial set up
1. Press and hold the POWER key of the display unit until the unit beeps.
The magnetron warm-up sequence should start, after which the unit
should enter standby mode.
2. If necessary, adjust the lighting and contrast.
3. If necessary, change the default language settings.
Transmission check
Ensure that all personnel are clear of the scanner and switch to transmit
mode. Run through the radar operations as described in the relevant
display unit’s Owner’s Handbook and check that all the expected data is
displayed.
Bearing alignment
With the system correctly installed, check the bearing alignment to ensure
that targets appear at their correct bearing relative to the boat’s bow.
Adjust the alignment as necessary.
Display timing adjustment
The display timing can be affected by the length of cable used to connect
the scanner to the display unit. This in turn affects the short range accuracy
shown on the display.
It is advisable to check the display timing before using the system for
navigation.