Ant Revolution - Furuno FAR-2107 Series Service Manual

4.4.4 ANT REVOLUTION

INITIALIZE -> 3: SCANNER -> 4
In case that the gearbox RSB-097 (42 rpm/DC motor: D8G-571) is used for the radar
FAR2xx7, the antenna speed can be switched to 36 rpm or 42 rpm. This is selected by
the ANT REVOLUTION menu.
- LO: 36 rpm,
- HI: 42 rpm
- AUTO: When the pulse length is S1 or S2: HI (42 rpm) and when it is M/L: LO
(36 rpm)
The type of the antenna motor and the PWR board determines the antenna speed. The
PWR boards for 42 rpm motor are 03P9339-B, 03P9339-D and 04P9338-D types.
See page. 4-67 for details.
Note: Power system for antenna motor
The ANT ON (High) signal from the SPU board is outputted in TX condition. It turns
on the power to the antenna motor.
1. In case that the antenna motor power is the DC type (RSB-097: FAR-2xx7)
ANT ON, ANT SPEED (H/L level), and B.P signals from the SPU board are
inputted to the PWR board, and the antenna rotation speed is kept constant.
See page.7-67.
BP
SPU-013
BP
24 rpm: 144 Hz
36 rpm: 216 Hz
42 rpm: 252 Hz
Fig 4.4.2 Antenna DC Motor Power Control System
ANT ON
ANT
ANT SPEED
Control
BP
(Speed, ON/OFF)
RPU-013
ANT SPEED
HI: 42 rpm
Low: 36 rpm
4-17
ANT Motor
+24VDC 42rpm
J610
+20VDC 36rpm
REG
(ANT Motor)
[SCANNER]
PWR
Initialize Setting Initialize Setting
Initialize Setting Initialize Setting
4.4