Furuno FM-8800D Service Manual page 147

TEMPERATURE DETECTION
When the temperature sensor: U13 (LM60CIM3) detects 60 degrees, it automatically
reduces TX output to 14W. This output is the value adjusted by [MENU] -> SYSTEM
-> TX POWER -> "TEMP.REDUCE". The output voltage of this sensor is calculated by
Vo = 6.25 mv/deg. x Tc deg.
U13 (LM60CIM3)
Fig. 5.4.9 TX/RX Board Temperature Sensor Location
Measured
Fig. 5.4.8 V vs Output Power
GG
PA
5-15
CH16 Low Power
Power Data 45
PWR CONT 0.54 V
F VSWR 0.65 V
Power 0.75 W
5.4 Block Description
Hi Power
161
1.93 V
3.04 V
21.2 W