Furuno FS-5000 - Page 362

FELCOM 82
H3-33
On the handset, three vertical bars (short, medium, and long) right to the antenna
symbol indicate the C/N data or signal quality. The number of the bar versus C/N value
is;
CESH (HSD) CESD/CESV (FIU/Data/Voice) NCSC
(Telex)
59 or more: 3 bars 53 or more: 3 bars 48 or
more: 3 bars
56 or more: 2 bars 50 or more: 2 bars 44 or more: 2 bars
53 or more: 1 bar 47 or more: 1 bar 40 or more: 1 bar
52 or less: no bar 46 or less: no bar 39 or less: no bar
The following figures show the change of C/N when the azimuth and elevation angles
are changed from the antenna position where the strongest signal is detected.
- Rx IF AGC Level (150 or more)
AGC level used in the receiver circuit on the RF CON board is detected and sent
to the SYS CPU. If it is 150 or more, the circuit is normal.
20
40
0
-10
+10
-20
+20
C/N LEVEL
Indcation
AZ Degree
60
NGNG
20
40
0
-10
+10
-20
+20
C/N LEVEL
Indcation
EL Degree
60
NGNG
RF CON
AGC Level
U20
U17U21U21
U13U3 U8
Rx IF
1/2
2/2
Rx HSD Circuit
Rx Non HSD Circuit
10.7MHz
R33
U16
(10.7MHz)
AGC ADJ