Japan Radio Co. JLR-7900, Instruction Manual

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4.10 System Settings

Select "SYSTEM" on the main menu to display the system setting screen.

To change the system settings, place the unit in maintenance mode.
An overview of each submenu is as follows.
(1) UNIT:
The unit of speed and heigtt is set.
(2) TIME DIFF: Set the time difference between UTC and local time.
(3) DATE DIFF: Select the date format.
(4) MAG DORR: Automatic or manual magnetic correction or turn magnetic correction off can be
selected.
(5) LORAN C: Convert latitude and longitude to LORAN C
(6) DATUM: A geodetic system can be selected from the list in "Appendix 1 Geodetic
System."
4.10.1 Setting Speed and Anntena height Unit
You can select "NM," "kn," "km," "km/h," "mi," "mi/h," "m," and "m/s" for speed and "m", "ft" and "fm" for
anntena height unit.
1. Refer to "4.15.1 Change to a maintenance mode" and display the maintenance menu.
2. Press the key to select "SYSTEM", "UNIT" and "DIST/SPD" or "ANT HEIGHT" in order.
3. Press the key to select the unit, and press the key.
4.10.2 Setting the Time Difference

You can set the time difference between your current location and UTC.

For Japan, the time difference is +9 hours, so you would enter +09:00.

When a time difference is set, “L” is displayed on the upper right of the screen.
1. Refer to "4.15.1 Change to a maintenance mode" and display the maintenance menu.
2. Press
the key to select "SYSTEM" and "TIME DIFF" in order.
3. Press the key to enter the time difference, and press the key.
Procedure
Procedure