JRC JMR-7230-S Instruction Manual page 364

Note
When X and Y are included in the chart information, the system automatically offsets the
amount to WGS84 and displays the result. In this case, a check mark is attached to Offset of
"Datum Offset" and "Chart Shift to WGS84" is displayed in the alert notification area.
As shown above, even if the offset amount is determined in the [Datum Transformation] dialog
box for the chart that is displayed under WGS-84 and the [OK] button is clicked on, this function
is disabled and the message, "The Datum is already WGS-84", is displayed.
3
Select a geodetic system from the [From] combo box of [Geodetic Datum].
Memo
For the geodetic datum that is displayed in the [From] combo box, refer to "D.3 Geodetic datum
abbreviations". However, "No Use" in No.9, No.10, No.48 and No.49 is not displayed.
Section 13 Operating a Chart (option)
Chart display position in the
WGS84 geodetic datum
X and Y: Offset amount to WGS84
13-18
Chart display position in
the local geodetic datum