Nera saturn bp User manual

Saturn Bp Portable
Technical Manual
Saturn Bp Portable
Technical Manual

1 Saturn Bp Portable – Technical Manual
Contents
Introduction
IntroductionIntroduction
Saturn Bp Portable ........................................................................................ 3
Connecting Up............................................................................................... 4
Connection of Optional Equipment................................................................ 4
Technical Data ............................................................................................... 5
The INMARSAT-B System............................................................................. 6
System Description
System DescriptionSystem Description
Saturn Bp Portable Communication .............................................................. 8
Signalling & Communication Channels ........................................................11
Communication Sequences......................................................................... 12
Idle State ..................................................................................................... 14
SCPC Signalling .......................................................................................... 16
Voice............................................................................................................ 18
Clearing ....................................................................................................... 20
Diagrams
DiagramsDiagrams
Block Diagram ............................................................................................. 22
Antenna Unit Interconnection Diagram........................................................ 23
MCU Interconnection Diagram .................................................................... 24
Service
ServiceService
Exploded View – Saturn Bp Trunk............................................................... 26
Exploded View – Saturn Bp Transceiver ..................................................... 27
Replacing Trunk Parts ................................................................................. 28
List of Spare Parts ....................................................................................... 33
Service Level Functions .............................................................................. 34
List of Alarm Messages ............................................................................... 35
List of Start-up Messages............................................................................ 36
List of Terminal Status Messages................................................................ 36
List of Clear Causes .................................................................................... 37
List of Terms ................................................................................................ 40
Doc. No. QLZB911025 Rev. A Infotema 5114 11/96
Nera SatCom AS reserves the right to change the design
and specifications of the equipment without notice.

2
Saturn Bp Portable – Technical Manual

3 Saturn Bp Portable – Technical Manual
Introduction
IntroductionIntroduction Saturn Bp Portable
Saturn Bp is a portable terminal for the Inmarsat-B system. It
provides a quickly established and very reliable link to terrestrial
networks.
The complete system including the four-section antenna, Main
Control Unit and RF equipment is packed in a compact and
robust case. Main connectors and telephone handset are easily
accessed from a compartment at one end. It is equipped with
wheels for easy transportation and total weight is only 18 kg.
Saturn Bp can be connected to a wide range of AC or DC supply
voltages and has an exceptional low power consumption. It
operates over a wide temperature range, withstands rain and
snow and is ideal for tough environments.
Features
• All equipment integrated in a lockable case.
• Low weight, small size.
• Antenna and RF electronics integrated may be remoted up
to 90 m dependent on type of coax cable.
• Wide range AC and DC operation.
• Additional outlets for telephone, fax and data.
• Last number redial and short number dialing via alpha-
numeric editing and recall facilities.
• Handset with built-in display and keypad for dialling, system
control and diagnostics, short number editing and signal
strength read-out.
• Design based on proprietary custom ASICs and Digital
Signal Processors giving stable trouble-free operation.
Optional equipment
• Standard DTMF telephones (max 5)
• Telefax (for connection to telephone inlet)
• PC for telex operation
• PC for High Speed Data transfer, 56/64 kbps or 9.6 kbps
modem communication
• Printer
Basic Equipment
Optional Equipment
5 standard
telephones
Telefax
(replacing a
telephone) PC (Data) PC (Telex)
Printer
Display Handset
External
connector
panel
External
connector
panel
Antenna sections
Transceiver
Supporting
legs
Display Handset
Internal
connector
panel
Main Parts

4
Saturn Bp Portable – Technical Manual
Connecting Up Introduction IntroductionIntroduction
External connector panel
+ RED
- BLACK
TEL.
2-5
2W
DC
12V/24V
DTE AC
100-250V
50-60 Hz
ON
OFF
ANTENNA
AC FUSE
6.3A SLOW
CONNECT AC TO EARTHED OUTLET ONLY!
Power consumption:
- receive: 28 W
- transmit: 110 W (total)
Power
ON/OFF
11 - 34 VDC
90 - 276 VAC
(47 - 400 Hz)
w/ground
Caution! The DC supply must be connected with correct polarity.
Display
Handset
Connection of Optional Equipment
External
connector
panel
Alternative external
connection to DTE
port.
Connection of additional
telephones/telefaxes
through special cable.
Internal
connector
panel
DTE
AUX TEL.1
2W
PC
PRINTER
Telex
Centronics
Telephone
Telefax
with keypad Telefax
without keypad
DATA TLF.
UNADAPTER 401
Telefax adapter
TEL.
2-5
2W
DC
12V/24V
DTE AC
100-250V
50-60 Hz
ON
OFF
ANTENNA
AC FUSE
6.3A SLOW
CONNECT AC TO EARTHED OUTLET ONLY!
Printer
w/RS232
Interface Card
RS232

5 Saturn Bp Portable – Technical Manual
Interfaces
MCU – AU: Coaxial cable with TNC-connectors
Display Handset: 7-pin circular (AMP) connector (female)
External connector panel: • coaxial antenna connector
• 3-pin circular (AMP) coded connector (male) for external DC supply
• 3-pin circular (AMP) coded connector (male) for AC power
• 10-pin circular (AMP) connector (female) for standard telephones or
telefax (TEL. 2-5)
• 14-pin circular (AMP) RS232 Data Terminal Equipment connector (female)
Internal connector panel: • 4-pin RJ11 connector for standard telephone (TEL.1)
• 25-pin RS232 Data Terminal Equipment connector (female)
• 9-pin PC connector (female)
• 9-pin printer connector (male)
Display Handset
LCD display: 2 x 12 characters
Weight: 0.35 kg
Dimensions in milimetres: W: 56, H: 214, D:47
Environmental Conditions
Operating temperature: -25°C to +55°C
Storage temperature: -50°C to +80°C
Rain: 100 mm/hour
Shock: 90 cm drop
Electromagnetic Compatibility
Radiated: EN55022
Conducted: EC 801
General
Saturn Bp Portable complies with the INMARSAT-B System Definition Manual for a Land
Mobile Earth Station.
Operational Characteristics
• Assembly time < 60 seconds
• Antenna separation up to 90 meters
• 99 short numbers with alphanumeric names
• Last number redial
• Voice coding at 16 kbps
• Group III telefax at 9.6 kbps
• High Speed Data transfer at 64 kbps or 56 kbps
• Data modem transfer up to 9.6 kbps
Power Supply
AC power: 90 VAC - 276 VAC / 47-400 Hz
(operative when connected to both AC an DC supply)
DC power: 11 - 34 VDC
Power consumption: Typically 28 W receive, 110 W transmit (total)
Carrying Case
Material Moulded polyethylene case
Contents: • Main Control Unit (MCU)
• Antenna and RF units (integrated)
• Display Handset
• Compass, and
• Cables
Weight : 18 kg
Dimensions in millimetres: W: 630, H: 210, D: 480
System Specifications
Transmit frequencies: 1626.5 MHz - 1646.5 MHz
EIRP: 33/25 dBW
RF channel spacing: 20 kHz
Antenna: Four-section plane
Antenna size: 0.6 m2
Polarization: Right-hand circular (RHC)
G/T: - 4 dB/K
Controls: On/off switch
Technical Data
Introduction
IntroductionIntroduction

6
Saturn Bp Portable – Technical Manual
Inmarsat
The INMARSAT-B system offers high quality 16 kbps
voice communication, and 9.6 kbps telefax and data
transmission.
The benefit of the INMARSAT system is its high
capacity, and the rapid and reliable connection
between the land based (fixed) users and the Mobile
Earth Stations (MESs).
The large number of Land Earth Stations (LESs) in
operation allows the operator to select the one giving
the lowest cost to a particular land based subscriber.
Each satellite region is under the control of a Net-
work Coordinating Station (NCS), which controls
and monitors the traffic between the MESs and the
LESs.
See figure 1.
Services
• Duplex telephone calls – basic telephony services
• Simplex telephone calls – LES-to-mobile only
• Duplex telefax – CCITT Group 3 facsimile servic-
es, 9.6 kbps
• Simplex telefax calls – LES-to-mobile only
• Simplex group ID addressing – to a selected
group of mobiles
• Simplex area addressing – to all mobiles within a
specific geographic area
• Duplex data communication – Hayes compatible
9.6 kbps data service
Figure 1.
Overview of the Inmarsat-B system. Figure 2.
Four satellites in a geostationary orbit above the
equator at approx. 35700 km altitude.
E
Q
U
A
T
O
R
EARTH
12000 km
35700 km
Pacific Ocean Region
Indian Ocean Region
55.5°W
63°E
179°E
18.5°W
Atlantic Ocean Region (West)
Atlantic Ocean Region (East)
The INMARSAT-B System System Description System DescriptionSystem Description
System Satellites
The satellites are positioned in a geostationary orbit
above the equator at approximately 35700 km alti-
tude.
In geostationary orbit, each satellite moves at the
same rate as the earth, and so remains in the same
relative position to the earth, above equator, allowing
the antenna to have line-of-sight communication with
the satellite.
The Saturn Bp Portable can communicate via the
four satellites covering one Ocean Region each.
The positions of the system satellites are shown in
figure 2.
Transmission frequencies
The INMARSAT-B MESs operate in the following
frequency bands:
Calls from Saturn B terminals 1626.5 MHz — 1646.5 MHz
Calls to Saturn B terminals 1530.0 MHz — 1559.0 MHz
A large number of channels are available (20 kHz
channel separation), offering either 16 kbps voice
communication, or 9.6 kbps duplex data communica-
tion.
Duplex communication uses two channel frequen-
cies, one in each direction.
The LESs provide interface to the international
networks for telephony and data: PSTN (Public
Switched Telephone Networks) and PSDN (Packet
Switched Data Networks).
LES
NCS
MES
TELEPHONE
NETWORKS
NCS: Network Coordinating Station
LES: Land Earth Station
MES: Mobile Earth Station
(Saturn B terminal)
MES
DATA
NETWORKS
TELEX
NETWORKS
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7 Saturn Bp Portable – Technical Manual
Channel numbers
All radio frequency channels used by the MES are
assigned a particular hexadecimal number which is
translated into frequencies on L-band between MES
and satellite, and to C-band between LES and satel-
lite.
Channel no. 32C8 for an MES always designates:
1660.5000 MHz transmitting frequency
1542.5000 receiving frequency
Channel Types
The Inmarsat-B System differs between physical and
functional channels. A physical channel refers to one
frequency, one carrier. Every frequency can have
several functional channels muliplexed on it. Each
functional channel is named after the originating unit.
The NCS TDM will in the initial system multiplex the
NCSC for Bulletin Boards and Call Announcement,
the NCSA for Channel Assignments and NCSI for
Interstation information to the LES on the same
physical channel. When the system expands, spot
beams and Ocean Region Registration will be intro-
duced using the functional channels NCSS and
NCRA multiplexed on the NCS TDM. The traffic on
one TDM may then be to heavy and some of the
functional channels may be moved to another NCS
TDM frequency.
The physical SCPC channels are always divided into
three functional channels. During call set up and
release the whole bandwith is used for signalling and
the functional channel is called MES-SIG/LES-SIG.
During speech or data phase, the signalling part of
the channel is called VSUB or DSUB and the service
carrying part is called MESV/LESV or MESD/LESD.
Requests and assignments
The Network Coordinating Station in each Ocean
Region continually transmits to the MESs within its
region on the NCS Common Signalling Channel
(NCSC).
When selecting a particular Ocean Region, the MES
automatically tunes its receiver to the NCSC fre-
quency, and awaits System Information from the
NCS.
The System Information (Bulletin Board) includes
available NCS/LES channel frequencies, location of
satellites, operational status, etc.
When the NCS sends a Call Announcement, detail-
ing the channel to which the MES should tune to
receive the call.
When the MES user dials a subscriber’s international
telephone number, the MES transmits an Access
Request to the NCS via the LES, and awaits a Chan-
nel Assignment from the NCS.
Telephone communication
For telephone communication a Frequency Division
Multiple Access (FDMA) is used, in a Single Channel
Per Carrier (SCPC) system. The voice communica-
tion occupies two (unpaired) channel frequencies.
Figure 3.
Communication path.
The telephone channels are controlled by NCS which
assigns a free channel upon request. When a chan-
nel has been assigned it is controlled by LES until
end of call.
Facsimile communication
The Saturn Bp telephone ports may be configured for
telefax communication. The transmission is telefax
only, and is performed at a rate of 9.6 kbps.
Telefaxes without keypad may be connected via an
adapter.
Data communication
The data service allows the Saturn Bp user to com-
municate at up to 56/64 kbps, via the public switched
network, to fixed modems and data terminals.
The INMARSAT-B System Cont’d
System Description
System DescriptionSystem Description
Saturn Bp
Portable Land Earth
Station
LES
Display handset
Path established by
Saturn Bp terminal
via satellite. PC
w/modem
Standard telephones
Telefax
Data/modem communication (option)
Public
Telephone
Network
Telefax
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8
Saturn Bp Portable – Technical Manual
System Description
System DescriptionSystem DescriptionSaturn Bp Portable Communication
Calls from Mobiles
To initiate a call, the user dials the international call prefix 00
prior to the telephone number for the required destination.
The LES code is also included, either automatically when
using the default LES, or manually selected from the Display
Handset.
The mobile automatically includes information to identify the
MES and the particular end terminal that originates the call.
Saturn Bp Portable has six voice connections: the Display
Handset and five connectors (one internal and four external)
that are normally configured for standard telephone and a
telefax.
The LES uses the end terminal identifying information (OI)
for billing purposes.
The mobile transmits the dialling information on a channel
specially assigned by the NCS, to the LES, which also has
been instructed to tune to the same channel.
On receiving the call, LES routes it over the public telecom-
munications networks to the intended destination. When the
destination responds, for example by the dialled subscriber
lifting the handset, the call proceeds.
The illustration of the call initiation is simplified.
PSTN
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
00 47 66 8447 00 f
Calls from Mobiles
Forward/return ID
123456/ABCDEF OI
1Type Voice
Commissioned
Yes
6684 47 00
LES
Return ID
Type
2
ABCDEF
Voice
Access Request
When the MES originates a call it starts
by sending a request to the LES. This
initial request for service contains the
MES Return ID and type of service.
Saturn Bp incorporates a configuration
table for originating information,
accessible through the “Configure Ports”
function (70). This table contains one
entry for every physical connector with
the Originating Id and type of service for
that specific connector.
LES Translation Table
MES Translation Table
123
456
789
0 #
P S Re
Fwd ID
Rx ch.
Tx ch.
123456
8192
12000
ChannelAssignment
Connector
Service/
Originating Id
Phone/OI=1
Phone/OI=2
Fax/OI=17
Default=no OI
Default=no OI
Default=no OI
HANDSET
TEL.1 (int.)
TEL.2 (ext.)
TEL.3 (ext.)
TEL.4 (ext.)
TEL.5 (ext.)
LES=2
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9 Saturn Bp Portable – Technical Manual
Saturn Bp Portable Communication Cont’d
System Description
System DescriptionSystem Description
Calls to Mobiles
Calls are made as ordinary international (Satellite) calls
where each Ocean Region has an international country
code. If an area is covered by more than one satellite, it is
necessary that the caller knows which satellite (Ocean
Region) the mobile is tuned to.
The international codes to the four Ocean Regions are as
follows:
Atlantic Ocean East Region: 871
Pacific Ocean Region: 872
Indian Ocean Region: 873
Atlantic Ocean West Region: 874
The illustration of the call initiation is simplified.
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6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
Calls to Mobiles
00871 681234567
When requested to call a specific IMN, LES translates
the IMN to a Forward ID and a Destination Id (DI). The
request is then sent to the MES which translates the
Forward ID and the DI to a physical line to call.
To "connect" a Destination Id to a physical line,
SaturnBp incorporates a translation table accessible
through the “Incoming call route” function (71).
This table can contain up to 100 DI translations, and
each DI in use is programmed with type of call and
destination.
A call is not allowed to be routed to a connector that is
configured to another type than the DI specifies.
A telephone DI can only be routed to a phone type
connector type. A facsimile DI can only be routed to a
fax type connector.
Forward/return ID
123456/ABCDEF
123456/ABCDEF
123456/ABCDEF
DI
01
02
17
Type
Voice
Voice
Fax
IMN
681234567
681234789
681234890
LES Translation Table
MES Translation Table
☞
123
456
789
0 #
P S Re
Connector
Service/
Originating Id
Phone/OI=1
Phone/OI=2
Fax/OI=17
Default=no OI
Default=no OI
Default=no OI
HANDSET
TEL.1 (int.)
TEL.2 (ext.)
TEL.3 (ext.)
TEL.4 (ext.)
TEL.5 (ext.)
LES
Return ID
Type
2
ABCDEF
Voice
Response
LES
Fwd ID
Type
DI
2
123456
Voice
1
Call announcement
LES=2

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Saturn Bp Portable – Technical Manual
System Description
System DescriptionSystem Description

11 Saturn Bp Portable – Technical Manual
NCS Common Ch (NCSC)
NCS Assignment Ch (NCSA)
NCS Registration (NCRA)
NCS Spot beam (NCSS)
MES
Saturn Bp
Portable
terminal.
MES Request Ch (MESRQ)
MES Region Registration Ch (MESRR)
MES Call Acknowledge Ch (MESCA)
SCPC In-band Signalling (MESSIG)
SCPC In-band Signalling (LESSIG)
SCPC Voice (MESV/VSUB)
SCPC Voice (LESV/VSUB)
SCPC Data (MESD/DSUB)
SCPC Data (LESD/DSUB)
LES
The Land Earth Station
routes messages to/from
the MESs within the
coverage area of one of
the four Inmarsat
satellites.
NCS/NCS
Signalling Links
NCS
The Network Coordinating
Station controls the satellite
resources to LESs and
MESs within a single
satellite coverage area.
MES Region Registration Ch (MESRR)
MES Response Ch (MESRP)
MES Request Ch (MESRQ)
NCS Interstation Ch (NCSI)
LES Interstation Ch (LESI)
Signalling Channels
Communication Channels
(SCPC = Single Channel Per Carrier)
Public Switched
Telephone
Networks
ISDN
Packet Switched
Data Networks
Communication Channels
Designation Transmission Type of information
LESV
MESV
LESD
MESD
SCPC with Duplex 16 kbps voice
VSUB sub-band communication
signalling
SCPC with Duplex 9.6 kbps data
VSUB sub-band communication
signalling
Signalling & Communication Channels
System Description
System DescriptionSystem Description
Signalling Channels
Designation Transmission Type of information
NCSI
LESI
NCSC
MESRP
NCSA
MESRQ
MESCA
NCSS
MESRR
NCRA
MESSIG
LESSIG
Continuous TDM Bi-directional signalling information
between LES and NCS
TDM Bulletin Board announcements.
TDMA MES responses
Continuous TDM Assigns SPCS channels
Slotted Aloha Request from MES to LES
Slotted Aloha Acknowledges shore-originated
simplex calls.
Continuous TDM One frequency per spot beam;
enables an MES to identify beam
serving location.
Slotted Aloha Registration signal to LES/NCS.
Continuous TDM Acknowledgement from NCS to
MES
SCPC In-band signalling

12
Saturn Bp Portable – Technical Manual
System Description
System DescriptionSystem DescriptionCommunication Sequences
Set-up
SCPC In-band Signalling
SCPC Voice Mode
Listens to NCS common
channel.
NCS Common Channel
MES number from
telephone network.
Validates MES
authorization.
Adds MES to LES
busy list. "Request
for Call
Announcement" SU.
NCSI
NCSA
LESI
NCSC
Transmits "Channel
Assignment" SU.
NSCA: Once for
maritime MES. Three
times for Land
mobile MES.
MESRP
Transmits "MES
Response" SU on the
TDMA channel.
Adds MES to NCS
busy list.
"Call Announcement"
SU. Repeated once if
no response from
Land Mobile MES.
MES
Mobile Earth Station
LES
Land Earth Station
NCS
Network
Coordination
Station
For call release, see
separate diagram
Sets SCPC channel in "In-
band Signalling" mode.
Transmits "Scrambling
Vector Advice" SU
repeatedly.
MES-SIG
Returns
"Scrambling Vector
Acknowledge" SUs
repeatedly.
LES-SIG
RINGING
Ringing tone
(generated by LES)
MES-SIG
Transmits "Return Carrier
Identifier" SUs.
Switches to MESV/SUB
mode
OFF-HOOK
Transmits "Connect" SUs
"Fill-in" SUs when
quiet.
Maintains burst SU
every 5 secs to
prevent clearing by
LES.
Transmits speech
and "MES Connect"
SUs continuously.
SUB
SUB
INMARSAT-B
Fixed-originated Duplex Telephone Call
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
ESC
☞
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Listens to NCS common
channel.
LES
Land Earth Station
NCS
Network
Coordination
Station
NCS Common Channel
OFF-HOOK
MES operator dials
subscriber’s international
telephone number.
Transmits "Access Request"
SU.
MES
Mobile Earth Station
MESRQ
Adds MES to NCS
busy list.
Transmits "Channel
Assignment" SU.
NCSA:
Once for maritime
MES. Three times for
Land mobile MES.
Adds MES to LES
busy list.
"Request for Channel
Assignment" SU
NCSI
NCSA
Sets SCPC channel in "In-
band Signalling" mode.
Transmits "Service Address"
SUs and "Scrambling Vector
Advice" SU alternately.
MES-SIG
LESI
For call release, see
separate diagram
Returns "Scrambling
Vector Acknowledge"
SU.
LES-SIG
MES-SIG
Changes to
LESV/SUB mode.
"Return Carrier Identifier"
SUs
Changes to MESV/SUB
mode
Transmits "Ringing
Tone" & "Fill-in" SUs.
"Ringing tones"
Sends answer signal
& "LES Connect" SUss
"Fill-in" SUs when
quiet.
Maintains burst SU
every 5 secs to
prevent clearing by
MES.
Transmits "MES
Connect" SUs.
Transmits speech
and "MES Connect"
SUs continuously.
LESV & SUB
SUB
LES Voice Channel
and sub-band
signalling
Terrestrial call set-up
procedure.
SUB
INMARSAT-B
MES-originated Duplex Telephone Call
Set-up
SCPC In-band Signalling Mode
SCPC Voice Mode
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
ESC
☞
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
SUB
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13 Saturn Bp Portable – Technical Manual
System Description
System DescriptionSystem Description Communication Sequences Cont’d
LES
Land Earth Station
NCS
Network
Coordination
Station
MES
Mobile Earth Station
Switches to "In-band
signalling" mode and
sends channel
release SUs.
(Delay up to 2 min if
called party)
Terrestrial side
ON-HOOK
ON-HOOK.
MES switches to "In-band
signalling" mode and sends
6 frames of "Channel
Release" SUs,
then turns off carrier.
MES-SIG
Clear forward.
Observes MES
carrier off, then turns
off LES carrier and
sends "Notification of
Channel Release"
SU to NCS.
Removes MES from
LES busy list.
LESI
Removes MES from
NCS busy list, and
updates channel
status table.
LES-SIG
LESI
Removes MES from
NCS busy list, and
updates channel
status table.
ON-HOOK.
MES switches to "In-band
signalling" mode and
sends 6 frames of
channel release SUs,
then turns carrier off.
MES-SIG
Observes MES
carrier off, then turns
off LES carrier and
sends "Notification of
Channel Release"
SU to NCS.
Removes MES from
LES busy list.
INMARSAT-B
MES or Fixed Call Release
Voice Mode
Signalling Mode
Voice Mode
Signalling Mode
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
ESC
☞
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL00+INTL
TEL. NO . + f
ESC
☞
Re
P
–
7
8
9
4
5
6
1
2
3
✳
0
#
R

14
Saturn Bp Portable – Technical Manual
BDE
MAIN CONTROL BOARD
Digital Signal Processor Sub-system
Telephony
Interface Computer
Codec
RXIF
12 MHz
Transmitter
Combiner/
splitter
Local
Oscillator
Synthesizer
Receiver
RF Sub-system
RX Channel
1525 -
1559 MHz
TXIF
2.5 MHz
TX Channel
1626.5 -
1660.5 MHz
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL 00+INTL
TEL . NO . + f
Idle State System Description System DescriptionSystem Description

15 Saturn Bp Portable – Technical Manual
NCS Common Channel (NCSC)
ADE
MULTI
FRAME
TIMESLOT
7
FRAMING
BITS
32
RATE - 1/2 FEC CODED BITSTREAM
1552 bits
FRAMING
BITS
32
RATE - 1/2 FEC CODED BITSTREAM
1552 bits
Approx. 264 ms
FRAMING
BITS
32 RATE - 1/2 FEC CODED BITSTREAM
1552 bits
8 bits96 bits
TIMESLOT
6
96 bits
TIMESLOT
5
96 bits
TIMESLOT
4
96 bits
TIMESLOT
3
96 bits
TIMESLOT
2
96 bits
TIMESLOT
1
96 bits
TIMESLOT
0
96 bits
Approx. 264 ms
OCTET No.
1
2
3
4
5
6
7
8
9
10
11
12
8 7 6 5 4 3 2 1
BIT No.
SIGNALLING UNIT – SU
CCITT CRC
(CYCLIC REDUNDENCY CHECK)
MES ID LES ID
SPARE
PRIORITY
SPARE
CHANNEL
PARAMETERS
MESSAGE
TYPE
Octet No. 1 Octet No. 2 Octet No. 3 Octet No. 4 Octet No. 5 Octet No. 6 Octet No. 7 Octet No. 8 Octet No. 9 Octet No. 10 Octet No. 11 Octet No. 12
SIGNALLING UNIT = 12 "OCTETS" = 96 BITS
EXAMPLE: CALL ANNOUNCEMENT (TYPE 81
H
)
81H
SERVICE
NATURE
SRVICE
TYPE
ECHDDH18H09H00H01H01H
DESTINATION
TERMINAL ID
01H
SPARE
MESSAGE
NUMBER
00H54H26H
100000011110110011011101000110000000100100000000000000010000000100000001000000000101010000100110
Message type
MES ID
LES ID
channel parameters
destination terminal ID
CCITT CRC
priorityspare spare
service nature service type
spare message number
81
M1
CALLANNOUNCEMENT
shift shift
shiftshift
shift
t
BPSK Encoded Signal
(BPSK = Binary Phase Shift Keying)
Duplexer
RF Units
HPA
Combiner/splitter
LNA
Right Hand Circular
polarized RF signal
f = 1525 - 1559 MHz
Forward Direction
MES NCS
System Description
System DescriptionSystem Description Idle State

16
Saturn Bp Portable – Technical Manual
MAIN CONTROL BOARD
Digital Signal Processor Sub-system
Telephony
Interface Computer
Codec
RXIF
12 MHz
Transmitter
Combiner/
splitter
Local
Oscillator
Synthesizer
Receiver
RF Sub-system
RX Channel
1525 -
1559 MHz
TXIF
2.5 MHz
TX Channel
1626.5 -
1660.5 MHz
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL 00+INTL
TEL . NO . + f
BDE
SCPC Signalling System Description System DescriptionSystem Description

17 Saturn Bp Portable – Technical Manual
O-QPSK Encoded Signal
(O-QPSK = Offset Quadrature Phase Shift Keying)
t
0°+90°+270°+180°0°+90°+270°+180°
Duplexer
RF Units
HPA
Combiner/splitter
LNA
Right Hand Circular
polarized RF signal
f = 1525 - 1559 MHz
SCPC Channel (Single Carrier Per Channel)
In-band Signalling Mode
Forward Direction
MES LES
ADE
* Unique Word:
0111 1000 1001
for 1st subframe, and
1000 0111 0110
for 2nd, 3rd and 4th
subframe (compliment)
DUMMY
CW
24 bits
SUB
32 bits SU1
60 ms
* UW
24 bits
FLUSH
8
bits
FLUSH
DUMMY
6 bits
Before FEC
coding
6 bits
SU1SU1
96 BIT
SIGNALLING UNIT
384 bits
8
bits
SU
SUBFRAME - 4
SU
SUBFRAME - 3
SU
SUBFRAME - 2
SU
SUBFRAME - 1
60 ms 60 ms 60 ms 60 ms
n x 240 ms
END OF
DATA
192 bits
CONTIN.
WAVE
96 bits
BIT
TIMING
64 bits IN-BAND SIGNALLING FRAME
1920 bits IN-BAND SIGNALLING FRAME 1920 bits
240 ms240 ms 24 ms
OCTET No.
1
2
3
4
5
6
7
8
9
10
11
12
8 7 6 5 4 3 2 1
BIT No.
SIGNALLING UNIT – SU
CCITT CRC
(CYCLIC REDUNDENCY CHECK)
SPARE
(Random binary bits)
MES IDMESSAGE
TYPE
Octet No. 1 Octet No. 2 Octet No. 3 Octet No. 4 Octet No. 5 Octet No. 6 Octet No. 7 Octet No. 8 Octet No. 9 Octet No. 10 Octet No. 11 Octet No. 12
SIGNAL UNITS = 12 "OCTETS" = 96 BIT SIGNALLING UNIT.
EXAMPLE: SCRAMBLING VECTOR ACKNOWLEDGE
95
H
4A
H
09
H
EC
H
DD
H
18
H
09
H
F1
H
BC
H
06
H
79
H
D5
H
LES ID
LES_SIG
SIGNALLING
CHANNEL
100101011110110011011101000110000000100111110001101111000000011001111001110101010100101000001001
Message type
MES ID
LES ID
CCITT CRC
spare
95
M21
SCRAMBLING VECTOR ACKNOWLEDGE
System Description
System DescriptionSystem Description SCPC Signalling

18
Saturn Bp Portable – Technical Manual
BDE
MAIN CONTROL BOARD
Digital Signal Processor Sub-system
Telephony
Interface Computer Codec
Transmitter
Combiner/
splitter
Local
Oscillator
Synthesizer
Receiver
RF Sub-system
TX Channel
1626.5 -
1660.5 MHz
RXIF
12 MHz
RX Channel
1525 -
1559 MHz
TXIF
2.5 MHz
6
123
45
#
789
*
0
DEL
FUNC ALPHA ENTER
MORE/
HELP SHIFT LES
ON/OFF
DIAL 00+INTL
TEL . NO . + f
Voice System Description System DescriptionSystem Description