F200-40 Remote Control; Fig. 3-15 F200-40 Simplified Diagram - Simrad Robertson AP9 Mk3 Instruction Manual

3.7

F200-40 Remote Control

This unit enable remote control of the AP9 MK3 Control unit.
A simplified diagram is shown below:
CLOCK
DATA
PUSH
BUTTONS
The F200-40 display is operated via clock and data signals from the
control unit and will display actual course or set course, dependent
of operational mode.
When turning the course knob, IC5-A and B will shape the pulses
generated by the two opto-couplers that are switched ON/OFF via
the split-rotor, and thus provide pulses as course 1 and course 2.
The operational mode of the control unit can be selected by the push
button M (Mode). This button provides both PORT and STBD signals
simultaneously by the two diodes D1 and D2. The sequence of mode
change is described under the OPERATION section.
When pushing the P and S buttons, the PORT and STBD signals will
switch to low (GND) and provide course change or NFU-steering
depending on the operational mode.
20169223D
LCD1
DISPLAY
IC3
V
R
D3 R18
L3
+
SUPPLY
L4
_
PORT
P
MODE
M
STBD
S
F200-40 Simplified diagram
Design and theory of operation
SPLIT ROTOR
IC6
REG.
D9
D5
V
DC
IC2-E
D1
D2
IC2-F
Fig. 3-15
COURSE KNOB
OPTO COUPLERS
IC5-A
COURSE 1
IC5-B
COURSE 2
V
DC
D6
H
PORT
L
H
STBD
L
3-15