How To Check The Radar's Performance - Furuno FAR-2218-BB Operator's Manual

1. OPERATIONAL OVERVIEW
Setting
[2ND ECHO REJ]
[LOW LEVEL ECHO]
[WIPER]
[CUSTOMIZED ECHO]
[PRESENTATION
MODE]
[RANGE]
[OFF CENTER]
ANT REVOLUTION
1
* : Gain is automatically set according to [PM GAIN ADJ], if it was adjusted at installation.
2
* : [NORTH UP RM] is selected when the [PRESENTATION MODE] is set to [NORTH UP TM].
3
* : The setting is not memorized.
4
* : The performance monitor is deactivated if the range is changed manually.
1.48.2

How to check the radar's performance

The range scale is automatically set to 24 NM. The radar screen will show arcs. If the
radar transmitter and receiver are in good working conditions in as much as the origi-
nal state when the monitor was turned on, the innermost arcs should appear between
8.0 NM to 19.8 NM. The performance monitor can observe a total of 10 dB loss in
transmitter and receiver.
How to set the number of arcs
1. Open the menu.
2. Select [1 ECHO].
3. Select [6 PM ARC].
4. Select [2], [3], [5] or [6] as appropriate, then press the ENTER MARK key.
5. Close the menu.
The figure belows shows an example where [PM ARC] is set to [5].
Display
Transmitter: normal
Receiver: normal
8.0 NM to
19.8 NM
Note 1: The lengths of the arcs can vary according to installation environment. Judge
the strength of the echo that appears within 60° from the arc location to confirm if the
radar is working properly or not.
Note 2: The location of the arcs changes according to the [PM ARC] setting.
Turn the performance monitor off when finished.
1-88
Setting at PM
activation
Table continued from previous page
ON
Previous setting kept,
fixed.
OFF
Previous setting kept,
fixed.
2
No change. *
24 NM, 24 SM, 48 kyd
(A/B-types only)
OFF
24 rpm
Radar State
Adjustable
while PM Setting at PM deactivation
is active
Yes Setting at PM deactivation.
No Setting before PM activation.
No Setting before PM activation.
No Return to active display.
Yes Setting at PM deactivation.
Setting at PM deactivation.
4
Yes *
Yes Setting at PM deactivation.
No Setting before PM activation.
Display Radar State
Transmitter and receiver:
No arc indicates 10 dB loss.
Contact your dealer for advice.
(For magnetron radars, have
8.0 NM to
19.8 NM a technician check the
magnetron.