Adjusting Datum (Arcs Only) - JRC JAN-701B Instruction Manual

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3.10.9 Adjusting Datum (ARCS Only)

(1) Entering offset

You can shift the chart position by entering offset values (latitude/longitude) or by using the cursor.

• Do not adjust datum offset unless you need it. This adjustment will be required only when the

geodetic system of the chart is the local one and its display position is misaligned.

1) In the normal menu

Select [MENU] - [(6) Chart] - [(4) ARCS] - [(2) Adjust Datum Offset] in that order.

In the Table Editing menu, Graphic Editing menu

Select [MENU] - [(5) Chart] - [(4) ARCS] - [(2) Adjust Datum Offset] in that order.

In the User Chart Editing menu

Select [MENU] - [(4) Chart] - [(4) ARCS] - [(2) Adjust Datum Offset] in that order.

The "Chart Shift" panel opens.

2) Enter the offset value and left-click the [OK]

3) When the dialogue is opened, the current offset value specified by the user is displayed.

The offset value can be cleared with the [Clear]

• If an offset value is already input or an offset value for WGS-84 is set in the chart data, then that

value will be displayed in the [Chart Shift] panel.

• When an offset value for WGS-84 is set in the chart data, pressing the [Clear] will return the

display to that value.

3 Basic Operation of ECDIS