Nera Saturn Bm Marine Mk2, Техническое руководство

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23
Saturn Bm Mk2 Marine – Technical Manual
Main Control Board
+72 V
+38 V
+28 V
±
12V
+7 V
+5 V
GND
Outputs:
RF Unit
ADE
Above Deck Equipment
BDE
Below Deck Equipment
Main Control Unit
Pedestal Control Unit – PCU
Turning
Sensor
Interface
Pointing
Control
Interface
Pointing
Sensor
Interface
+28
VDC
Antenna
steering control.
HPA output
control.
Power monitor
supervision.
Burst duration
supervision.
Control &
Monitoring Data
Data
Processor
Serial
Data
Interface
Data
Processor
+12 VDC
DC/DC
Converter
Antenna Control
Board – ACB
Access & Control
Sub-system
DSP Sub-system
Antenna Control Modem
Telephony Interface
RF Sub-system
HPA
LNA
Data
Tx off
Duplexer
Combiner/splitter
Combines/separates RF
signals and control signals
High Power
Amplifier
Separates RX and TX bands
Low Noise
Amplifier
Stable Platform
Transmitter/receiver
&
Filters
RF Sub-
system
Power
Up-
converter
&
Transmitter
Upconverts
TXIF signal to
L-band TX
signal.
Amplifies TX
signal.
ADE supply
+28 VDC
TX
1626.5–
1646.5 MHz
RX
1530–
1559 MHz
Data
5/10 MHz
Combiner/
splitter
PCM
Codec
64 kbps
Auxiliary
&
Handset
Interface
Buffers
&
UARTS
Data
Processor
&
Memory
Access & Control.
Traffic handling.
User equipment
handling.
Alarm & Supervision.
Test & Diagnosis.
Subscriber
Selection
&
Interface
External DC
Power Supply
Connector
Board
Gyro
11–34 VDC
PC
(Telex)
Printer
Navigator
Ext I/O
(Distress
Alarm and/or
Message
Indicator)
PC
(Data)
ASIC
(Application
Specific
Integrated
Circuit)
Generates
modulated
TXIF
signal.
Demodulates
RXIF signal.
FEC decoding.
DSPs
(Digital Signal
Processors)
Communication
with Data
Processor.
Voice PCM and
FAX coding.
Frame
assembly/
disassembly.
Scrambling/
descrambling.
FEC coding.
Down-
converter
&
Receiver
Downconverts
L-band RX
signal.
Amplifies RX
signal.
RX IF
12 MHz
TX IF
2.5 MHz
Local
Oscillator
1455–1489 MHz
Telephones
or
Telefax
AUX
Display
Handset
4
3
AL 0+ N
T L O +
04/98
DC/DC Power Board
Gyro Interface Board
DISTRESS
I MAR AT M
NERA
D i a g r a m s
D i a g r a m s D i a g r a m s Block Diagram
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