JRC JMR-5410-4X, Instruction Manual

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4-13 Section 4 Range and Bearing Measurement Methods
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APP A
APP B
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4.6 Using Parallel Index Lines (PI)
4.6.1 Description of a parallel index line
Parallel index lines (PI) refer to straight lines at equal interval that are displayed on the screen.
By using parallel index lines, complicated measurement is enabled relating to the bearing and the
range by using the own ship’s position as the reference point.
4.6.2 Displaying parallel index lines
4.6.2.1 Displaying parallel index lines by using the [PI] button
on the screen
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Click on the [PI] button in Navigation Tools (measuring tool).
Operation when the [PI] button is clicked on:
• When the [PI] button is set to Off, PI is set to On and the [PI Menu] dialogue is displayed.
• When the [PI] button is set to On and the [PI Menu] dialogue is displayed, the [PI Menu]
dialogue is closed. PI remains On.
• When the [PI] button is set to On and the [PI Menu] dialogue is not displayed, PI is set to Off.
Memo
The [PI Menu] dialogue can also be displayed by clicking on [Tools] - [PI] (parallel index
lines) on the menu.
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Set PI on the [PI Menu] dialogue.
For the details of the [PI Menu] dialogue, refer to "4.6.2.3 Description of the [PI Menu] dialogue".
The [PI Menu] dialogue setting method varies depending on the PI operation mode. For the
details, refer to the descriptions of the operation mode in "4.6.3 Setting all the parallel index lines
concurrently (All mode)", "4.6.4 Setting parallel index lines individually (Individual mode)", "4.6.5
Displaying lines at equal interval on the left and right sides of the own ship’s position (Track
mode)", and "4.6.6 Displaying two intersecting lines (Equiangular mode)".
To clear parallel index lines:
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Set the [Display for All Lines] button to Off by clicking on it.
The parallel index lines disappear.
Example of Display
[PI] button