JRC JMA-5212-4/6 User Manual page 61

2.2 NAMES AND FUNCTIONS OF CONTROL PANEL KEYS
[TX/PRF] (Transmit/Transmitting Repetition Frequency) Key
PREHEAT at the upper left of the radar display changes to STANDBY about three minutes
after the power is turned on.
Then, press this key to start transmission.
To fine-tune the transmitting repetition frequency, press the key during transmission.
Use of this function with the interference rejection function heightens an interference suppressing
effect.
oSee section 3.4.1.
[EBL1] (Electric Bearing Line 1) Key
Use this key to display and select EBL1.
Holding down the key for two seconds or more displays the menu for EBL1 setting.
oSee section 3.5.2.
oFor EBL1 setting, see section 3.5.3.
[EBL2] (Electric Bearing Line 2) Key
Use this key to display and select EBL2.
Holding down the key for two seconds or more displays the menu for EBL2 setting.
oSee section 3.5.2.
oFor EBL2 setting, see section 3.5.3.
[ALARM ACK] (Alarm Acknowledgment) Key
Use this key to acknowledge a failure, target's approach, or collision alarm.
Press the key to stop an audible alarm.
If more than one alarm has occurred, the key needs to be pressed the number of times equivalent to
the number of alarms.
oSee section 3.3.7.
[PANEL] (Operation Panel Brilliance) Key
Controls the brilliance for the controls and Keys on the operation panel.
The brilliance changes cyclically each time the key is pressed.
oSee section 3.3.3.
[MOB] (Marker) Key
A marker is set to the latitude and longitude of the own ship's position at the point of pressing this
key.
For example, use the key to store the own ship's position at the moment when somebody falls from
the ship.
Holding down the key for two seconds or more erases the marker.
oSee section 3.5.15.
[ACQ] (Manual Acquisition) Key
Enables the manual TT acquisition mode for the target on which the cursor sits.
oSee section 5.2.1.
[TGT CNCL] (Tracking Target Cancel) Key
Cancels the symbol and vector of a target under tracking, and stops tracking the target.
Holding down the key for two seconds or more erases all the acquisitions of TT.
oSee section 5.2.2.
[TGT DATA] (Target Data Setup) Key
Use this key to view the numeric data of the TT under tracking or the currently displayed AIS.
oSee section 5.2.3.
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