JRC JMA-9832-SA - Page 171

3 – 100
3
3.4 BASIC OPERATIONS
.
..
Example
Assuming that the initial bar indication is B = 8 and the current bar indication A = 6, the relative
attenuation is d (B) = 3.5 dB, d (A) = 7 dB. Thus, d (A) - d (B) = 3.5 dB.
From this, it is clear that the current transmitted output power is attenuated by approx. 3.5 dB.
Example of Checking Transmitting System
Fig.2
PERF. MONITOR
INFORMATION LABEL
DATE
BAR LENGTH
0
2
4
6
8
10
12
14
16
18
20
22
d (B)
d (A)
097865342110
A B
Relative Attenuation d
3.5dB
dB
Measuring
accuracy
Current bar indication A = 6
Initial bar indication B = 8
PM