Koden MDC-2900, Operation Manual

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Chapter 2 Basic operation (Panel) MDC-2900 Series
2-14 0093129012-06
2.11 Measure distance and bearing of a target
Measure distance (VRM: Variable Range Maker)
The VRM is used to measure the distance of a target from the reference point.
Refer to “ Setup own ship profile ” (page1-5) to setup reference point.
Two VRM’s (“VRM1” and “VRM2”) are provided.
Adjust these [VRM] knobs and lay each circle on the desired target to read the distance to the target on
the display.
1
Press [VRM1] key to display a broken line circle of VRM1.
The distance to the target is indicated on the lower right on the display, and also a symbol is
displayed on the left side of the distance value.
VRM1
3.290NM
8.990NM
VRM1
Target
Reference point
Distance to Target
Radius changed by VRM knob
2
The broken line circle is zoomed in or zoomed out by turning [VRM] knob clockwise or
counterclockwise, respectively.
*Turning [VRM] knob (while pressing it) changes the range quickly.
At the same time, the range changes and the distance to the target can be read out on the display.
Increase of
range
Decrease of
range
VRM knob
3
Another press of the [VRM1] key, and the broken circle disappears.
At the same time, the distance value at the lower right of the display disappears.
4
Press [VRM2] key to activate the dotted line circle of VRM2.
Operation procedure and distance display are the same as [VRM1].
5
If you want to display both VRM1 and VRM2 simultaneously, press [VRM1] key and [VRM2] key.
Then, both broken line circle and dotted line circle are displayed.
6
Switching between VRM1 and VRM2 is performed with pressing either of [VRM] keys as desired.
When the selected key is pressed, the color of operation panel changes to red.