Furuno FR-8125 ユーザーズマニュアル

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1.  OPERATION
1-17
1.15.2
How to measure the range with a VRM
There are two VRMs, No. 1 and No. 2. The VRMs are dashed rings so that you can 
identify the rings from the fixed range rings. You can identify VRM 1 from VRM 2 by 
different lengths of dashes. The dashes of the No. 1 VRM are shorter than those of 
the No. 2 VRM.
1. Press the VRM key to display either of the VRMs. Press the VRM key to change 
the active VRM between No. 1 and No. 2. The indication of the currently active 
VRM is in a rectangle.
2. Use the CursorPad to align the Variable Range Marker with the inner edge of the 
target. Read the distance at the lower-right corner of the screen. Each VRM re-
mains at the same geographical distance when you operate the RANGE key. The 
size of the VRM ring changes in proportion to the selected range scale.
3. Press the ENTER key to anchor the VRM.
4. To erase a VRM, press the VRM key to activate the VRM and press the CANCEL/
HL OFF key.
1.15.3
How to select VRM unit
You can select the unit of measurement used by the VRM. The selections are nautical 
miles (NM), kilometers (KM), statute miles (SM), kiloyard (KYD) or nautical miles and 
yards (NM&YD). The cursor range unit is also changed when the VRM unit is 
changed.
1. Press the MENU key to open the menu.
2. Use S or T to select [Others] and press the ENTER key.
VRM 1
Cursor range and bearing
VRM 2
Target
+
VRM
5 . 0 4 4 NM
2 . 0 8 2 NM
Cursor (+)
VRM 1 range
VRM 2 range
The currently active VRM
is in a rectangle.
3 7 . 4 º  R
     5 . 0 4 4  NM  
 
V E C T    T R U E     0 5 : 0 0