User's Manual

Table Of Contents
Synapsis Radar
with Nautoscan NX Pedestal
Operator Manual
Edition July 2015
2-63
4265.DOC020102
2.3.2.3.(1) North UP
North UP means that geographic north is upwards
- Stabilized operation -
Gyro information is required for the N UP operation. When the unit is switched
on, N UP is selected automatically. If the gyro is inoperative, an audible alarm
sounds and the alert GYRO OUT appears in the WARNING MESSAGES area.
When the gyro ceases operation, the ARPA functions are disabled and H UP
mode is automatically selected.
If N UP mode is selected, the value 000 represents compass North (Figure
2-27).
Visual impression
The Radar video is rotated to a northerly direction. North is at the top (000 ).
This effect is comparable with an ordinary sea chart on which North is at the
top. The SHM shows the ship’s correct compass heading.
Response to a change of course
The SHM rotates in line with the change of course. The Radar video remains
stationary.
Relative or true
The Radar video can be presented in Relative Motion (RM (..)) or True Motion
(TM(..)).