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4. Press the [2] key to select RINGS BRILL.
5. Press the [2] key again. Each pressing gradually increases the brightness of the rings
in 4 steps and the fifth pressing erases them.
6. Press the [ENTER] key to confirm you selection.
7. Press the [RADAR MENU] key to close the menu.
1.17.2 Measuring the range with the VRM
Use the Variable Range Markers (VRMs) for more accurate measurement of the range to
a target. There are two VRMs, No. 1 and No. 2, which appear as dashed rings so that you
can discriminate them from the fixed range rings. The two VRMs can be distinguished
from each other by different lengths of dashes.
1. Press the [VRM ON] key to display either of the VRMs. Successive presses of the
[VRM ON] key toggle the active VRM between No. 1 and No. 2 and the currently active
VRM readout is marked with >.....<.
2. Turning the VRM control, align the active variable range marker with the inner edge of
the target of interest and read its distance at the lower-right corner of the screen. Each
VRM remains at the same geographical distance when you operate the RANGE+ or
RANGE- key. This means that the apparent radius of the VRM ring changes in propor-
tion to the selected range scale.
3. Press the [VRM OFF] key to key to erase each VRM.
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No.1
VRM
Target
blip
No.2
VRM
VRM
>0.66SM<
1.18SM
Active VRM is identified
with this marker.
Figure 1-20 How to measure range with VRM