JRC JMA-9822-6XA User Manual

3 – 99
Procedures of Checking
q Read a current value A on the bar indicator.
w Referring to the Calibration Curve I, obtain a relative attenuation d (B) for the initial bar
indicator length B that is specified in the INFORMATION LABEL.
e Then, obtain a relative attenuation d (A) for the value A referring to the Calibration Curve I.
The value given by d (A) - d (B) represents the attenuation of the current transmitted output
power compared with the value at the initial time.
r If the attenuation value given by d (A) - d (B) is 10 dB or more (due to the life of the
magnetron), it is necessary to request for checking the transmitter system by a service engineer.
Fig.1
PERF. MONITOR
INFORMATION LABEL
DATE
BAR LENGTH
0
2
4
6
8
10
12
14
16
18
20
22
097865342110
Relative Attenuation d
dB
Measuring
accuracy
Date and time of
initial setting
Initial bar
length
Maximum
range of
PM pattern

JRC JMA-9822-6XA Specifications

General

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