Auto Tuning Function - Furuno FR-2155 Service Manual

2.8 Auto Tuning Function

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about 32 V
Tuning
Auto coarse
control
tuning point
voltage
about 2 V
Max. about 3 V
Tuning
indicator
voltage
Min. about 1 V
Pulselength
EEPROM
backup
Full
search
(a) (b)
LP LP M3
Max. Max.
Auto and
Tuning Ind. Tuning Ind.
Man. coarse
voltage voltage
tuning pt.
Figure 2.6 Tune Initialization
2-11
Short
search
(b)
(b) (b)
M1
S2
M2
Max. Max. Max.
Tuning Ind. Tuning Ind. Tuning Ind.
voltage voltage voltage
Tracking
Pulse length in use
(b)
(b)
Time
S1
Max.
Tuning Ind.
voltage
FR2115-SME-14