1. OPERATIONAL OVERVIEW
1-96
1.49.2 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].
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.
8.0 NM to
19.8 NM
8.0 NM to
19.8 NM
Display
Radar State
Display
Transmitter: normal
Receiver: normal
Transmitter and receiver:
No arc indicates 10 dB loss.
Contact your dealer for advice.
(For magnetron radars, have
a technician check the
magnetron.
Radar State
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