Sailor RM2042 Technical Manual page 17

1 INTRODUCTION
BLOCK DIAGRAM RM2042
15.3MHz
Rx First
IF-filter &
amp. mixer
amp.
1'st local
Buffer
osc.
amp.
141.225 MHz
+10V
+10V reg.
Power fail
gen.
+5V
AF-filter Carrier
+5V reg.
-6dB/oct. Detect
1
INTERFACE
(MODULE 1)
Power
failure
reset
2
+5V
12V/24V +5V
Wiring circ. reg.
3
Fuse/rev. VHF-
voltage port conn.
protection switch
1
2 1 1 2
1 1
1
6
7
Power con. Handset
P3 J1
27502
14.850MHz RECEIVER
(MODULE 3)
Limit amp.
2'd Mixer
AF-detect
& osc.
RF-level det.
450kHz
2'd IF-
filter
AF-Switch
Control
logic.
Modulation Rx-AF FSK Tx-AF
det. logic. filter modem. filter
2
2
8
1 1
2
AF-amp
w.mute.
1
1
Distress
Tx-AF NMEA
ch.inforn.
amps. data intf. 2
Ext.alarm.
2 3
1
Printf. Intf.
VHF- C2149/
&
serial com. PC intf.
I/O-Ports
16 2
3
+5V
1 1
3 9 1
1 1
9 25 4
2
VHF PRINTER C2149/PC NMEA
P2 J4 J3 J2
AF-filter
-6 dB/oct.
8.000MHz
XTAL
osc.
Carrier
Detect
4.9152 MHz
XTAL osc.
&
divider
Modem
commuc.
int.f.
Printer
strobe
pulse
gen.
Vcc +5V
Keyboard
light on/off
MICROPROCESSOR
(MODULE 2)
2
PROM EPROM
memory memory
View angel
contrrol
Display
backlight
control
RAM I/O
memory ports
S1
uP. Cicuit
unit. select
decoder
uP Program
control able
logic. timers
w.reset
Real time
clock
32.76kHz
+
Voltage
converter
-
RM2042
DISPLAY UNIT
(MODULE 4)
+5V
P5
LCD
Display
module.
VOL ON/OFF
KEYBOARD
(MODULE 6)
Keyboard
matrix
Keyboard
backlight
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