2.10 Measuring the Range
You can measure the range to a target three ways: by the range rings, by the cursor, and by the VRM (Variable Range Marker).
By range rings
Press the [RINGS] key to display the range rings. Count the number of rings between the center of the display and the target. Check the range ring interval (at the top left corner) and judge the distance of the echo from the inner edge of the nearest ring.
By cursor
Operate the cursor pad to place the cursor intersection on the inside edge of the target echo. The range to the target, as well as the bearing, appears at the bottom of the dis- play.
By VRM
1)Press the [VRM] key to display the VRM.
2)Press the cursor pad to place the VRM on the inside edge of the target. (The cur- sor appears and is linked with the VRM, allowing you to measure both range and bearing to the target.)
3)Check the VRM readout at the bottom
Note: The VRM is automatically anchored when no cursor pad key is operated within about 10 seconds.
To erase the VRM, press and hold down the [VRM] key for about three seconds.
1.5NM
0.5
Target
VRM 
VRM | VRM | EBL | + CURSOR |
0.675NM 220.9°R | 0.675NM 308.7°R | ||
range |
|
|
|
Figure 2-8 Measuring range by the VRM
2.11 Measuring the Bearing
There are two ways to measure the bearing to a target: by the cursor, and by the EBL (Electronic Bearing Line).
By cursor
Operate the cursor pad to bisect the target with the cursor intersection. The bearing to the target appears at the bottom
By EBL
1)Press the [EBL] key to display the EBL.
2)Press the cursor pad to bisect the target with the EBL. (The cursor appears and is linked with the EBL, allowing you to measure both bearing and range to the target.)
3)Check the EBL readout at the bottom left- hand corner of the display to find the bear- ing to the target.
Note: The EBL is automatically anchored when no cursor pad key is operated within about 10 seconds.
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