Sailor RM2042 - Page 17

1 INTRODUCTION RM2042
PAGE 1-9
BLOCK DIAGRAM RM2042
amp.
Rx
Keyboard
matrix
backlight
Keyboard
Display
backlight
contrrol
View angel
LCD
Display
module.
+5V
control
First
mixer
Buffer
amp.
osc.
1’st local
141.225 MHz
amp.
15.3MHz
IF-filter &
& osc.
2’d Mixer
AF-detect
Limit amp.
RF-level det.
2’d IF-
450kHz
filter
Detect
Carrier
Modulation
det. logic.
FSK
modem.
Rx-AF
filter-6dB/oct.
AF-filter
gen.
Power fail
+10V reg.
+5V reg.
reset
Power
failure
reg.
+5V12V/24V
Wiring circ.
Fuse/rev.
voltage
switch
port conn.
VHF-
Ext.alarm.
ch.inforn.
Distress
VHF-
serial com.
AF-amp
w.mute.
Tx-AF
amps.
NMEA
data intf.
Printf. Intf.
&
C2149/
PC intf.
XTAL
8.000MHz
osc.
PROM
memory
EPROM
memory
RAM
memory
4.9152 MHz
XTAL osc.
&
I/O
ports
divider
int.f.
commuc.
Modem uP.
unit.
decoder
select
Cicuit
gen.
pulse
strobe
Printer uP
control
logic.
w.reset
Program
able
timers
32.76kHz
clock
Real time
converter
VoltageKeyboard
light on/off
Power con.
P3 J1
Handset VHF
P2
PRINTER
J4 J3
C2149/PC NMEA
J2
+5V
1
2
4
9
259
216
7
1 1
11
3
2
31
11
1
1
2
13
2
1
2
+5V
12
6
+5V
1
+10V
2
8
14.850MHz
+5VVcc
VOL ON/OFF
S1
P5
2
Carrier
Detect
logic.
AF-Switch
Control
-6 dB/oct.
AF-filter
filter
Tx-AF
protection
11
2
3
1
2
I/O-Ports
27502
RECEIVER
(MODULE 3)
(MODULE 1)
INTERFACE
(MODULE 6)
KEYBOARD
DISPLAY UNIT
(MODULE 4)
(MODULE 2)
MICROPROCESSOR
+
-