JRC JMA-5312-6 Instruction Manual page 84

①：Range scale switching
To increase the observation range scale (maximum 96NM), click
(minimum 0.125NM), click - .
②：Range rings display On / Off
The display of range rings are set to On / Off whenever this button is clicked.
When the display is set to On, the interval of the fixed range marker is displayed.
③：Motion mode true / relative switching
The screen motion mode is switched whenever the button is clicked.
TM (true motion) ⇒ RM (relative motion) ⇒ TM
RM(R) indicates that the radar trails is a relative trail.
RM(T) indicates that the radar trails is a true trail.
④：Off center switching
If this button is clicked, the cursor is moved, and the [ENT] key is pressed, the ship's position can be
moved to the cursor position. The moving range is within 66% of the radius.
If the button is clicked for 2 seconds, the off-center is set to Off and the ship's position is returned to
the center of the screen.
⑤：Transmission / standby switching
At expiration of the pre-heat time after the power is turned on, Preheat changes to Standby .
Standby : Indicates a standby state. If this button is clicked in this state, the equipment is set to a
transmission state.
Transmit : Indicates a transmission state. If this button is clicked in this state, the equipment is set
to a standby state.
⑥：Interswitch connection change
This button is displayed when the interswitch is connected. This button indicates the connection
status of the scanner unit that is connected to the indicator.
If the button is clicked in the transmission standby state, the menu for changing the connection state
between the scanner unit and the indicator is displayed. The connection state of the scanner unit and
indicator cannot be changed unless the master indicator is in a standby state.
→ Refer to the Interswitch (Optional) Instruction Manual that is attached for the setting method.
This button is not displayed if the interswitch is not connected.
⑦：Transmission pulse length switching
The transmission pulse length is switched whenever this button is clicked. Three types of pulses are
available, short pulse (SP), middle pulse (MP), and long pulse (LP). The pulse length and repetition
frequency vary even for the same short pulse, according to the range that is used and it is displayed as
SP1 , SP2 .
⑧：Azimuth display mode switching
The azimuth display is switched whenever this button is clicked.
H Up (Head Up) ⇒ N Up (North Up) ⇒ C Up (Course Up) ⇒ H Up
If the button is clicked for 2 seconds, the GYTO Setting menu is displayed.
2-17
+ and to reduce the range