Nera saturn bp, Technical Manual

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Saturn Bp Portable – Technical Manual
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
Main Control Board
DC/DC Power Board
RF Units
Antenna Unit Main Control Unit
Transmitter
Antenna Control Board – ACB
DC
Supply
+72 V
+38 V
+28 V
±
12V
+7 V
+5 V
GND
Outputs:
Internal
Connectors
Access & Control
Sub-system
DSP Sub-system
Antenna Control Modem
Telephony Interface
RF Sub-system
External
Connectors
+ 5 VDC
+15 VDC
HPA
LNA
Data
Tx off
Duplexer
Combiner/splitter
Receiver
Data
Processor
+28
VDC
HPA output
control.
Power monitor
supervision.
Burst duration
supervision.
Combines/separates RF
signals and control signals
High Power
Amplifier
Separates RX and TX bands
Low Noise
Amplifier
Control &
Monitoring Data
AC Mains
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
AUX
&
Handset
Interface
Buffers
&
UARTS
Data
Processor
&
Memory
Access & Control.
Traffic handling.
User equipment
handling.
Alarm & Supervision.
Test & Diagnosis.
Subscriber
Selection
&
Interface
6
1
2 3
4
5
#
7
8
9
* 0
DEL
FUNC
ALPHA ENTER
MORE/
HELP
SHIFT
LES
ON/OFF
DIAL 00+INTL
TEL . NO . +
f
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
Serial
Data
Interface
Display
Handset
DTE
(Modem)
DTE
(Modem)
PC
Printer
Telephone
or Telefax
(TEL. 1)
Telephone
or Telefax
(TEL. 2-5)
Voltage
Regulator
90-276 VAC
47-400 Hz
11-34 VDC