JRC JMA-2343, Instruction Manual

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3.3.11 Measuring the range to the target
To measure the range to the target, the operator may take one of the following actions.
• Use VRM (Variable Range Markers)
•
Move the center of the VRM (floating EBL)
• Use the parallel line cursor
• Use the cursor
1. Using VRM 1. Using VRM 1. Using VRM 1. Using VRM
• A VRM is a circle that is displayed on the PPI screen.
• Since the size of the VRM may be change at will using the upper or lower portion
of the cross key, the operator is able to measure the range of any desired target.
• This radar equipment is capable of displaying two VRM simultaneously (#1VRM
and #2VRM).
• The #1VRM and #2VRM are displayed, selected and erased using the
ＶＲＭ ＶＲＭ ＶＲＭ ＶＲＭ
key.
•
Whether or not the #2VRM is enabled is set at the menu.
• A VRM can take on the following states:
The VRM is not displayed.
The VRM is displayed
The cross key is not in VRM mode.
The cross key is in VRM mode
The VRM to be used (#1VRM or #2VRM) is not selected.
The VRM to be used (#1VRM or #2VRM) is selected.
Measuring the distance from the ship using #1VRM Measuring the distance from the ship using #1VRM Measuring the distance from the ship using #1VRM Measuring the distance from the ship using #1VRM
(a) Select "FIX" in the line "EBL1/VRM1" - the menu "FUNCTION".
The #1VRM value represents the distance from the ship.
The center of #2VRM is always fixed at the position of the ship.
Setting whether or not use of #2VRM is enabled Setting whether or not use of #2VRM is enabled Setting whether or not use of #2VRM is enabled Setting whether or not use of #2VRM is enabled
(a) Select "YES" in the line "VRM2" - the menu "FUNCTION".
Use of #2VRM will be enabled.
If "NO" is selected, use of #2VRM will be disabled.
Operating the #1VRM/#2 Operating the #1VRM/#2 Operating the #1VRM/#2 Operating the #1VRM/#2VRM VRM VRM VRM
(a) Push the
ＶＲＭ ＶＲＭ ＶＲＭ ＶＲＭ
key.
Each time the VRM key is pushed, the VRM that may be operated using the cross
key changes sequentially between #1VRM and #2VRM.
The #1VRM/#2VRM that is currently enabled is the VRM value at the upper left
of the screen that is enclosed with dotted lines.