JRC JMA-9822-6XA User Manual

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3.4 BASIC OPERATIONS
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Example
Assuming that the maximum range of the initial PM pattern is rBmax = 18 NM according to the
INFORMATION LABEL, and if that of the current PM pattern is rAmax = 16 NM, the fall value
is -R (rmax) = 5 dB, referring to Calibration Curve II.
This means that the receiving system has a sensitivity fall of approx. 5 dB.
Example of Checking Receiption System
Fig. 4
PERF. MONITOR
INFORMATION LABEL
DATE
BAR LENGTH
Calibration Curve II
rAmax rBmax
PM pattern maximum range (rmax)
dB
0
0
2
4
6
8
10
12
14
16
1614
151312 17 18 (NM)
Sensitivity fall value R (rmax)
18NM
Initial PM pattern
Approx. 16 NM
Current PM pattern

JRC JMA-9822-6XA Specifications

General

Brand	JRC
Model	JMA-9822-6XA
Category	Marine Radar
Language	English