Instruction Manual

34 RA51/52/53/54/55 INSTRUCTION MANUAL – 05
To set off-centering point, press relevant keys as follows:
OFF-C
→
Up/Down & Left/Right
→
ENT Fixes the off-centering point and exit the off-centering state.
To cancel the OFF-C function, press the OFF-C key again.
OFF-C The "OFF-C" display at the upper right disappears and function returns to the ordinary state from the Off
Center state.
5.4.15 Setting the SLEEP mode (SLEEP)
The SLEEP mode allows you to initiate a 30-second transmission at predetermined intervals,
then allow the radar to go into standby mode and the display will go dark to conserve power.
Press the "SLEEP" soft key once for a 5-minute interval, twice for a 10-minute interval, or three
times for a 15-minute interval. Pressing the key a fourth time will exit the sleep mode. Two
minutes before a specified transmission time, the screen backlighting turns on and the warm-up
timer starts. The transmitter will then run for 30 seconds and shut down. The sequence repeats
continually until you override it by pressing any key on the keypad.
Setting procedure
SLEEP
(Select 5min.)
ENT POWER 30-second-transmission every 5 min.
Transmission ON
SLEEP
(Select 10min.)
ENT POWER 30-second-transmission every 10 min.
Transmission ON
SLEEP
(Select 15min.)
ENT POWER 30-second-transmission every 15 min.
Transmission ON
SLEEP (Select OFF)------------------------------------------------------------------ SLEEP function is turned OFF
Setting completed
5.4.16 Tuning adjustment (TUNE)
(1) When the "TUNE" soft key is pressed, the TUNE display on the upper right side of the
screen will be highlighted.
(2) Turn the control knob to adjust the tuning to the desired level. The display will move in a
range of 0 and 99.
(3) When you are through, press the "ENT" key to exit. Pressing any other key will also exit and
move you to that function.
TUNE Control knob TUNE or ENT --------The adjustment state is ended.
(Tuning adjustment) Other function key -----Shift to other functions
Note: Use the "MENU" to return auto-tuning state.
5.4.17 Echo expansion (ST)
When the "ST" key is pressed, "ST1" is displayed in the middle left side of the screen and the echo
expansion function is turned on. This changes the target image by showing echoes expanding in
the direction away from the boat, thereby making smaller ones easier to see. Two levels of echo
expansion are available. Press the "ST" key repeatedly to alternate between them and to turn off
the function.
Note: Refer to "5.5.3.5 Echo expansion (ST)".
ST1
→
ST2
→
OFF
(Expansion rate ST1 < ST2 )