Sat B Extended Services

148 x 195 mm

Saturn B Extended ServicesOperator`s ManualSupplement toSaturn B Operator`s Manual

• Inmarsat Lease Mode CN17

• Saturn B Enhanced Bitrate Module

• Saturn Bm Dual Antenna

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Saturn B Extended Services – Supplement to Saturn B Operator’s ManualDoc. No. 105530 Rev. 1.04 11/04

IntroductionGeneral ............................................................... 5Inmarsat Lease Mode CN17 ................................ 5Saturn B Enhanced Bitrate Module ...................... 6Saturn Bm Dual Antenna functions ..................... 9Saturn B renter/owner Level ............................... 11Installation of paid functions ............................. 12Activation of paid functions ............................... 13

Inmarsat Lease Mode CN17Operation ............................................................... 17

Call through preselected Lease Gateway LES ... 17Call from telephone ........................................... 18Terrestrial network ............................................. 19Priority calls ...................................................... 19Lease satellite positions.................................... 20Configuring Lease Gateway LES ....................... 22Selecting Ocean Region / switching mode......... 23

Appendices ............................................................ 25Lease Mode coverage map................................ 25Lease Mode azimuth map ................................. 26Lease Mode elevation map ................................ 27Normal Mode coverage map .............................. 28Normal Mode azimuth map................................ 29Normal Mode elevation map .............................. 30Distress alarm................................................... 31

Saturn B EnhancedBitrate ModuleInstallation.............................................................. 35

Interface Converter Unit - ICU ........................... 36Comtech Modem - CDM-550T ........................... 37RF installation ................................................... 37Connectors on Interface Converter Unit - ICU .... 40

Operating modes .................................................... 42Interface Converter Unit - ICU ........................... 42

Fixed...................................................................... 44Hotline call - configuration ................................. 45Hotline call - activation ...................................... 49Manual call from ICU - configuration .................. 51Manual call from ICU - activation ....................... 55Manual call from Handset - activation ................ 57

Demand Assignment Services................................ 60Variable Bandwidth System (VBS) andVariable Bitrate (CN17Ext) ................................ 60Variable Bandwidth Service (vbs) ...................... 61

Cont`d on next page

Saturn B Extended Services

© Nera SatCom AS, 2004

This manual complies with MCU software version no. 7.30

��A MEMBER OF CIRM

Variable Bandwidth Service (vbs) -hotline activation ............................................... 63Variable Bandwidth Service (vbs) -manual call setup .............................................. 68Variable Bitrate (cn17ext) .................................. 69CN17 Extension (cn17ext) -hotline activation ............................................... 69CN17 Extension (cn17ext) -manual call setup .............................................. 74

Saturn Bm Dual AntennaInstallation .............................................................. 77

Connecting up ................................................... 77Antenna switchover ........................................... 78Dual Antenna Switch power up .......................... 78Setting up cut-out zones ................................... 81Configuration ..................................................... 83

Maintenance 85

Saturn B Extended Services 5

Introduction

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Figure 1 Lease Mode communication path.

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General

In addition to regular Inmarsat-B services, Saturn B equipment withsoftware for Extended Services provides as follows:

• Inmarsat-B Lease Mode CN17

• Saturn B Enhanced Bitrate ModuleInmarsat-B Lease Mode and Saturn B Enhanced Bitrate Moduleare special services provided by some LESOs.

• Saturn Bm Dual Antenna functions

The services are generally operated through global beam ofInmarsat’s spare satellites (Inmarsat I2 and spare I3 satellites),however, Saturn B may operate on I3 Spotbeams if allocated.

Inmarsat Lease Mode CN17

Inmarsat offers operation for parties who want to establish closednetwork services. CN17 is a system for long term communication.The Inmarsat Lease Mode CN17 offers the same service (lessDistress) as with Saturn B in Inmarsat Normal Mode.

The Lease Gateway LES generally only offers 16 kbps Voice and64 kbps High Speed Data services.

Saturn B Extended Services6

Saturn B Enhanced Bitrate Module

Saturn B Enhanced Bitrate Module (EBM) requires installation ofan Interface Converter Unit (ICU) and an External Modem unit.EBM is a system for long term communication over a leased satellitechannel. Initiation of lease service is by selection of speed, type ofmodulation and channel (frequency) both at the MES and LES.The system is open for operation through Inmarsat’s lease satellitesonly.• For operation, please note that Saturn B needs to be

commissioned for this service.• If Saturn B is commissioned for Inmarsat normal mode, the IMN

Numbers registered for the terminal remain unchanged for use innormal mode.

Saturn B with Enhanced Bitrate Module (EBM) offers three differentservices:• Fixed• Variable Bandwidth System (VBS)• Variable Bit Rate (CN17Ext)

FixedThe Fixed service is a manual operation where frequency, speed etc.is agreed upon with the Lease Gateway LES and set up manuallyeach time you initiate a connection.

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• Saturn B equipment provided with software capability for InmarsatLease Mode Services.

• No extra additional hardware is needed, however, a Lease ModeOpening Key is required.

• For operation, please note that Saturn B needs to becommissioned for this service.

• If Saturn B also is commissioned for Inmarsat normal mode, theIMN Numbers registered for the terminal remain unchanged foruse in normal mode.


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Variable Bandwidth System (VBS), andVariable Bit Rate (CN17Ext)VBS is a Telenor/COMSAT LES system implementation, whereasCN17Ext is a Nera/Stratos system implementation. They provideship-to-shore and shore-to-ship dial-up service. Selection of speed,channel etc. is automatic, based on request and available service(channel/speed).The systems include frequency management at the LES for optimumuse of leased channel(s). The VBS and CN17Ext systems are basedon extended Inmarsat signalling.The services are open for operation through Inmarsat’s leasesatellites only.

Opening KeysThe opening keys required to activate the Lease Mode modules areindicated below:

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Saturn Bm Dual Antenna functions

Saturn Bm equipment with Antenna ADE Mk2 version (with electronicsensors) and CTRL SW Series 7.12 and up, may be modified forDual Antenna operation.

Opening Keys• Opening Key for Inmarsat Lease Mode is required for operation in

Inmarsat Lease Mode and Dual Antenna operation.

• No Opening Key is required for Dual Antenna Operation.

SystemA Dual Antenna system comprises two separate Saturn Bminstallations and a Dual Antenna Switch (DAS).A Rotary Joint Kit, part 101210 is required for both Saturn BmAntennas. The Dual Antenna system is only functional for InmarsatLease Mode operations.

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The Dual Antenna Switch allows the MCU-A (dedicated as MASTER)to select one of the two antennas for satellite communication.

For further details, see Dual Antenna description later in this manual.

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Saturn B renter/owner LevelThe Saturn B terminals provide the following access levels in additionto USER (1) level and OPERATOR (2) level:• RENTER (3), and• OWNER (4)The RENTER and OWNER levels are protected by passwords.The default password for both levels is 1 2 3 4 5 6.Password protection can be used to restrict operative functions todifferent parameter levels, e.g.:• level 4 (OWNER) allowed to change setup.• level 3 (RENTER) allowed to read data.• level 2 (OPERATOR) given no access to reading or setup.• level 1 (USER) has standard minimum operational functions.These restrictions can be applied according to function, e.g.:the RENTER level can be allowed to configure the ASD function, butrestricted to reading only in the access code function.An individual password may be assigned to level 3 and 4 using the "SETPASSWORD" function no.13, see the Saturn B Data Service manual.

To set access level:

1 Select SET USER LEVEL function (12):

2 Display the current level:

3 Key in operator level ref. number,e.g. 3 (RENTER):3=RENTER, 4=OWNER

4 Key in the current password for thislevel (the default passwordis 1 2 3 4 5 6):

5 The terminal is now set to RENTER LEVEL:This level is active until a new level is set or theterminal is switched off. Therefore, set the levelback to USER when finished with your operations.

and revert to IDLE:

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Installation of paid functions

When purchasing one or a set of Optional Enhanced Functions, an"Opening Key" will be provided that cause the function(s) to be in-stalled.

Proceed as under "To set access level":

1 Select SET USER LEVEL function (12)

2 Display current level

3 At the "LEVEL" prompt, key in 5 9 6.

4 At the "PASSWORD" prompt, key in the "Opening Key" provided bythe agent.The function(s) are now installed.

5 Activate the function using the ENHANCED SETUP function (89),see next page.

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Activation of paid functionsThe Inmarsat-B Lease Mode CN17, Saturn B Enhanced Bitrate Module and VariableBandwidth System must be activated to allow operation and configuration:

1 Select ENHANCED SETUPfunction (89),

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scroll down to LEASE MODE PASSIVE:

2 Select LEASE MODE status:0=passive,1=active

3 Assign operation access level:2=operator , 3=renter, 4=owner

4 Activate the LEASE MODE function:

5 Scroll down to COMSAT_VBS PASSIVE:

6 Change the COMSAT_VBS status:0=passive,1=active

7 Assign operation access level:

8 Activate the COMSAT_VBS function:

9 Scroll down to NERA_EBM PASSIVE:

10 Change the NERA_EBM status:0=passive,1=active

11 Assign operation access level:

and update level:

12 Activate the NERA_EBM function:

Revert to IDLE:

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Inmarsat Lease Mode CN17 15

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Inmarsat Lease Mode CN17Operation ............................................................ 17

Call through preselected Lease Gateway LES17Call from telephone ....................................... 18Terrestrial network ......................................... 19Priority calls ................................................... 19Lease satellite positions................................. 20Configuring Lease Gateway LES ................... 22Selecting Ocean Region / switching mode..... 23

Appendices ......................................................... 25Lease Mode coverage map ........................... 25Lease Mode azimuth map ............................. 26Lease Mode elevation map ............................ 27Normal Mode coverage map ......................... 28Normal Mode azimuth map ............................ 29Normal Mode elevation map .......................... 30Distress alarm ............................................... 31

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Call through preselected Lease Gateway LES

• Ready for operation:

1 Key in the telephonenumber, e.g.:(Closed Networks will havedifferent numbering plans)

2 Initiate the call:

Slow beeps are heard during call setup.The square indicator appears when LEShas accepted the call.Ringing tone is heard until answer.

3 Clear the call when finished:

To check the Lease Gateway LESin the current Ocean Region:

(To modify, see"Configuring Lease Gateway")

and revert:

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Call from telephone

A telephone is used for basic telephone calls. Control of functionsand other facilities must be done from the Display Handset.

Call through preselected Lease Gateway LES

0 . 8 < 9 = routes the call via the preselected Gate-way LES.For subscriber number, see the specific Closed Network numberingplan.

Last number redialing

" retransmits the last number*.

Short number dialing (prefix 23)

. 8 0 9 fetches and sends the telephone number stored

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*Also applies when dialing from Display Handset.

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Dialing through a selected terrestrial network is only possible usingthe preselected Lease Gateway LES.The selected network number may be in the range 0 to 127.

Example of call through preselected Lease Gateway, and network 1:

Priority calls

The following call priority levels are recognized by the Inmarsatsystem:

0 – Routine1 – Safety2 – Urgent

Saturn B normally transmits calls with priority 0: Routine.

Whether you are using the Display Handset or a telephone, dialing *1or *2 ahead of the ordinary call digits gives the call priority 1 or 2respectively.

Assignment of priority level is only possible using preselected LeaseGateway LES and selected network.

Example of priority 1 call through the Lease Gateway LES, e.g. 801:

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Lease satellite positions

The System Information subfunction no. 45 provides the position ofthe present Lease Mode satellites.See also Appendix, Lease Mode Satellite Coverage Map.

Note!Lease Mode users operating manually pointed or directly pointedantennas must keep themselves informed about satellite positionchanges.To update satellite position data, see next page.

Current Lease Mode satellite positions

1 Select LEASE SAT POSfunction (45):

2 ENTER list of Ocean Regions:

Scroll down through the list,as required.

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Updating satellite positions

The System Information subfunction no. 45 provides the position ofthe present Lease Mode satellites.Since satellite data are not updated automatically, new positions and/or satellites must be keyed in manually. Only required when usingdirect pointing satellite search.

Procedure:

1 Select LEASE SAT POSfunction (45):

2 Enter list of Ocean Regions:

Scroll down through the list,as required.

3 At the required satellite,key in the new data:

4 Select east or west, e.g.:0=east, 1=west

5 Enter the new satellite location:

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Configuring Lease Gateway LES

A Lease Gateway LES must be selected for the Ocean Region priorto initiate Lease Mode operation:

1 Select Lease Gatewayfunction (57):

2 Read the Lease Gateway LESfor e.g. Indian Ocean Region (3):(Scroll up/down to set the LeaseGateway LES for another Ocean Region.)

Entering Lease Gateway

3 Key in the lease LESCode, e.g. no. 20:

4 Store e.g. LES 20 as gateway:

and revert:

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If the message ILLEGAL CHOICE appears, the entered LES does notexist in the specified Ocean Region.

The existing Lease Gateway LESs may be obtained using the LESCAPABILITIES function no. 60.After selection of Lease Gateway LES, select Ocean Region(SHIFT+LES) to take the new Lease Gateway LES in use.


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Selecting Ocean Region / switching mode

A Lease Gateway LES must be preselected for the Ocean Regionprior to selecting Lease mode operation, see next page.Use the Satellite Coverage Map in the appendix to select the OceanRegion at your location:Ocean Region Ref. No.

0 Atlantic Ocean Region West: AOR-W1 Atlantic Ocean Region East: AOR-E2 Pacific Ocean Region: POR3 Indian Ocean Region: IOR

Current RegionTo display the selectedOcean Region directly:

To Modify1 Enter EDIT MODE:and scroll up/down to required region:

Note! The antenna must be connectedwhen selecting Ocean Region.For land mobile terminals, the antennamust be repointed accordingly.

The Ocean Region may also be selectedvia the CURRENT OCEAN REGIONfunction no. 20.

Switching between Lease Modeand Normal Mode operation

2 Toggle *-key to select (LEASE appears)or deselect Lease Mode operation:

3 Enter selected mode:


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Satellite search levels – Saturn Bm Marine onlyThe search level used during an Initial Search or an Auto Search isdescribed in the Saturn Bm Operator’s Manual, see "SatelliteSearch" in chapter 2. operation.

The table below describes the search level patterns when operatingin Lease Mode (0,1,2,6 and 7 are optional):

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Distress alarm

On a Saturn Bm Marine terminal with MCU lease mode software, theDistress Alarm function is not available even when operating innormal mode.

New installationsThe equipment should be installed as described in the Saturn BmInstallation manual, with the exception of mounting and setting up ofthe Distress Alarm unit.

Existing installationsFor Saturn Bm installations with Distress Alarm unit(s) already includ-ed, the unit(s) must be disconnected and removed.

A common "serial" cable connects both Distress Alarm units andMessage Indicator units to the Main Control Unit. When removing aDistress Alarm unit, the cables should be interconnected in a stand-ard 4-pole connection box as indicated below.

Appendix – Distress alarm

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Supplement to Saturn Bm Installation Manual

Saturn B Enhanced Bitrate Module 33

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Saturn B EnhancedBitrate ModuleInstallation .......................................................... 35

Interface Converter Unit - ICU ....................... 36Comtech Modem - CDM-550T....................... 37RF installation ................................................ 37Connectors on Interface Converter Unit - ICU 40

Operating modes ................................................ 42Interface Converter Unit - ICU ....................... 42

Fixed .................................................................. 44Hotline call - configuration ............................. 45Hotline call - activation ................................... 49Manual call from ICU - configuration .............. 51Manual call from ICU - activation ................... 55Manual call from Handset - activation ............ 57

Demand Assignment Services ........................... 60Variable Bandwidth System (VBS) andVariable Bitrate (CN17Ext) ............................ 60Variable Bandwidth Service (vbs) .................. 61Variable Bandwidth Service (vbs) -hotline activation ............................................ 63Variable Bandwidth Service (vbs) -manual call setup........................................... 68Variable Bitrate (cn17ext) .............................. 69CN17 Extension (cn17ext) -hotline activation ............................................ 69CN17 Extension (cn17ext) -manual call setup........................................... 74


�)��+.�+�)��+.�+�)��+.�+ Installation

Saturn B Enhanced Bitrate Module (EBM) offers three differentexternal high speed data service options. The services are onlyavailable over lease mode satellites:• Fixed• Variable Bandwidth System (VBS)

• Variable Bitrate (CN17Ext)Within each service both manual and hot-line access modes aresupported for channel activation.In addition to the standard Saturn B installation, the Enhanced BitrateModule (EBM) consists of an Interface Converter Unit (ICU), and anexternal modem unit (Comtech CDM-550T).For activation, see Introduction > Activation of paid functions.The system can be used in several different configurations to suitethe various user’s requirements and services offered by the LESGateway operators. Users will be aware that lease mode operationmeans that there is a strong binding between terminals and the LESoperator effectively resembling Closed User Groups.

Access procedures and sequences may be different from those ofthe regular Inmarsat legacy services in normal mode.

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Saturn B Enhanced Bitrate Module36

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Interface Converter Unit - ICU

The ICU is either in normal mode (regular Inmarsat-B or InmarsatCN17), or in EBM mode.In normal mode the Saturn B MCU is directly connected to the antennaRX and TX paths, and the Comtech CDM-550T Modem isdisconnected.

In EBM mode the Comtech Modem is connected to the antenna RX andTX paths while the MCU is only receiving and tracking the satellite.The user’s DTE equipment is connected to the Comtech DTE port.When a call/channel has been set up the data traffic bypasses theMCU completely. During a call the MCU will remain tuned to, andreceive, the CESAL channel of the selected Lease Gateway.

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Comtech Modem - CDM-550T

The EBM system is operated with the satellite modem typeComtech 550-T.For setup and operation, see the CDM-550T Installation and Opera-tion Manual.

RF installation

Items (see figure 9 and 10):• Saturn B terminal (marine or land mobile)• ICU• Comtech Satellite Modem

• BNC 50 ohm 0.5m coaxial cable (2 pcs)• TNC 50 ohm 1m coaxial cable (1 pcs)• TNC 50 ohm to N-connector cable.

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Basic RF procedure:

See figures 9 and 10.

From a standard Saturn B installaton:

1 Turn off the Saturn B terminal.

2 At the Saturn B MCU, disconnect the coaxial cable between theSaturn B MCU and the Antenna.

3 Connect the coaxial cable from the Saturn B Antenna to the ICUconnector marked “Saturn ADE”.

4 Connect the 1 m long TNC coaxial cable between the Saturn MCUand the ICU connector marked "Saturn BDE".

5 Connect a BNC coaxial cable between the ICU "Transmit IF" con-nector and the "Transmit IF" connector on the Comtech Modem.

6 Connect a BNC coaxial cable between the ICU “Receive IF” connec-tor and the "Receive IF" connector on the Comtech Modem.

7 Turn ON the Saturn B terminal, the ICU and the Comtech Modem.

8 Verify that the power indicators on the Saturn B MCU, the ICU andthe Comtech Modem are lit.

Note! The Saturn B Enhanced Bitrate Module (EBM) option can onlybe used with a Saturn B MCU prepared for Lease Mode operation,see Inmarsat Lease Mode CN17 earlier in this manual.

Installation cont'd

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Connectors on Interface Converter Unit - ICU

RF connectors

Saturn ADE: TNC 50 ohm, female

Saturn BDE: TNC 50 ohm, female

Receive IF: BNC 50 ohm, female

Transmit IF: BNC 50 ohm, femaleInput level: 0 dBm

Data connectors

Saturn DTE: 25-pin DSUB, male

Pin number Pin name Notes1 GND2 RXD Input3 TXD Output4 RTS Output5 CTS Input7 GND

All other pins are unconnected in the ICU.ICU acts as a DTE.

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ICU alarm connector

By connecting the Alarm connector to the corresponding connectoron the Comtech Modem the following additional features are pro-vided:1. The ICU will disable the RFtransmit signal towards the antenna if"Unit Fault" (pin no. 5) is detected from the Comtech Modem, andacknowledges by returning an "External Carrier Off" signal.

2. An "External Carrier Off" signal is also sent to the Comtech Modemif an internal error should occur in the ICU.3. An "External Carrier Off" signal is given when the ICU is in "normalmode".

All other pins are unconnected in the ICU.ICU acts as a DTE.

Installation cont'd

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Interface Converter Unit - ICU

The ICU has two main operating modes, Normal mode and EBMmode. See figure below.

Normal mode(regular Inmarsat B or Inmarsat Lease CN17 mode)

In Normal mode the ICU is transparent to the signals from the SaturnB terminal, allowing ordinary Inmarsat traffic.

EBM modeIn EBM mode, the ICU acts as a frequency conversion unit betweenthe Comtech Modem 70 MHz IF signals and the Saturn B ADE L-band signals. The TX converter frequency is 1573 MHz and the RXconverter frequency 1471.5 MHz. In this mode regular Inmarsat trafficis not possible. The ICU is in EBM mode when the indicator next tothe EXT MODEM button is lit.

When configuring the Comtech Modem, make sure that the outputlevel is set to 0 dBm. A lower output level setting will cause a distur-bance in the output of the Saturn B HPA.


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Changing modes• Remote controlled by Saturn B MCU PC port through ICU's Re-

mote Control port.• Manually by first pressing the ICU button "Manual" on the ICU

front panel and then "Ext. Modem".

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General

The Fixed service option, which is supported from software version7.12 and above, requires that the Comtech Modem ispreprogrammed with fixed channels and data rates. Since channelsand data rates are pre-defined there is no exchange of parameterinformation between the Saturn B terminal and the Gateway LES.In the Fixed service option a call is always initiated from mobile.

• Installation must include opening keys for high_speed_data (seethe Saturn B Data Service manual), lease_mode, and nera_ebm.

• For activation of Lease Mode and EBM, using the ENHANCEDSETUP function (89), see Activation of paid functions in theIntroduction section.

• Program preferred Lease Gateway in corresponding ocean regionin menu LEASE GATEWAY LES function (57).

• Select correct current ocean region and lease mode withCURRENT OCEAN REGION function (20). Terminal will tune tothe CESAL TDM channel of the selected Lease Gateway, anddisplay ‘LeaseMode’ in handset display when ready for call.

Note that the pre-defined fixed lease channels (RX/TX) apply to oneparticular ocean region only. Users should avoid activating a leasechannel in the wrong ocean region as this may disturb otherconnections.

Activating the Enhanced Bitrate Module

When purchasing the Enhanced Bitrate Module, an "Opening Key"will be provided that allows the function to be installed in the Saturn BMain Control Unit.

1 Select SET USER LEVEL function (12)

2 Display current level.

3 Key in 5 9 6 at the "LEVEL" prompt.

4 Key in the "Opening Key" provided by the agent/Nera SatCom.

The Enhanced Bitrate Module is now installed.

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Procedure:

1 Select CONFIGUREPORTS function (70):

2 ENTER the list of connectors, andscroll down to the DTE connector:

(Default)

3 Key in high speed dataservice for DTE connector:5=high speed data (HSD),6=DTE Port Expander (SWI),7=Asynchronous data (ASD)8=printer (PRN)

and revert to IDLE:

Note! Refer to the Saturn terminal’s Operator’s Manual for furtherinformation.

Hotline call - configuration

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Access mode type - Function 85

When the HIGH SPEED DATA CONFIG function (85) is set toext. modem, EBM is used for all HSD channel connections. The Saturn Bterminal remains tuned to the selected CESAL channel even for theduration of a HSD call. The Main Control Unit (MCU) controls the antennaand maintains the high-power amplifier (HPA) ON for the duration of thecall. The ICU performs frequency conversion and effectively connects theextemal modem to antenna transceiver circuits.

Procedure:

1 Select HIGH SPEEDDATA CONFIG function (85):

2 Checkcurrent settings:

3 Select access mode:0=external, 1=V25bis2=manual, 3=hotline

4 Leave the remainingparameters unchanged, e.g.:

and revert to IDLE:

Hotline call - configuration cont'd

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External High Speed Data - Function 87Only accessible when the HIGH SPEED DATA CONFIG function (85) is set to 0=external.

The function sets the parameters pertaining to the EBM services:

1 Select Extern. HSD CONFIGfunction (87) and press ENTER:


("hot" is relevant to Fixed Lease channels)

3 Select access mode:3=hotline4=AT

4 Select service:0=vbs1=fixed2=cn17Ext

5 Select Ocean Region:0=Atlantic Ocean Region West - Lease1=Atlantic Ocean East Region - Lease2=Pacific Ocean Region - Lease3=Indian Ocean Region - Lease

6 Set default levels:0=Disabled1=Enabled

7 Set Tx level, e.g. 194:Valid value: * 0 . . 200

*According to LESO directions

8 Set alarm level, e.g. 240:Valid value: * 0 . . 255

and revert to IDLE:


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Data speed Digital power setting dBW

kbps Tx level Alarm level Min Nom Max

128 194 240 31 33 34172 223 30 32 33151 198 29 31 32

64 133 176 28 30 31118 155 27 29 30104 138 26 28 29

32 91 122 25 27 2880 108 24 26 2770 90 23 25 26

16 62 85 22 24 2555 75 21 23 2449 66 20 22 23

Notes to function 87

The ‘operating ocean region’ in the Extern. HSD CONFIG function(87) must match the ocean region set in the CURRENT OCEANREGION function (20).

The DefaultTxLevel specifies the nominal radiated output power andshould be obtained from the table below depending on the operatingdata rate of the leased channel and LESO directions.

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Hotline call - activation

Figure 12a Example of Hotline interconnections.

The 107 and 108 are control circuits on the Saturn B MCU DTE portconnected to similar circuits on the DTE equipment. An adapter maybe required to convert between different electrical signal levels. The107 is split (Y-cable) and extended to pin 6 on the ICU Remote port.

The Comtech Modem provides data and timing signals, and aReceive Signal Indicator (RSI) status for the DTE (circuit 109).The RSI signal indicates that the connection is established andreceive data is delivered to the DTE equipment via circuit 104 (RD).

To set up a satellite connection:

• Verify that the MANUAL button on the ICU has not been pressed.

• Let the DTE turn the CallReq control circuit ON. Saturn B detectsa transition on its 108 input.

• If the request is accepted Saturn B turns ON circuit 107 andsignals CallAck to the DTE. The circuit 107 switches the ICU toEBM mode and connects the Comtech Modem into the RF path.

• At the same time Saturn B turns the antenna high power amplifierON establishing the satellite circuit.

• The pre-programmed Comtech Modem is now connected to asimilar modem at the Gateway LES end. Data can be transportedas soon as the modems are synchronised.

• If the call request cannot be accepted 107 will remain OFF. The DTEequipment will have to cycle the CallReq signal and try again later.

• The DTE equipment can clear a connection by turning CallReq OFF.

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Hotline call - activation cont'd

• Saturn B clears a connection by turning 107 OFF, thus switchingthe ICU back to Normal mode.

• A high-priority event (like cable rewind, radio silence) will causethe Saturn B to switch OFF the high power amplifier and turn 107OFF. The DTE equipment must then cycle the CallReq signal tore-establish the satellite connection.

Figure 12b Example of Hotline wiring.

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To enable Saturn B to decode the AT commands applied by ICU, theDTE port on the MCU must be set to Asynchronous Data service(ASD).

Selecting ASD End Terminal Service - function 70

Procedure:


2 ENTER the list of connectors, andscroll down to the DTE connector:

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3 Key in asynchronous dataservice for DTE connector:5=high speed data (HSD),6=DTE Port Expander (SWI),7=Asynchronous data (ASD)8=printer (PRN)

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Asynchronous data - function 86

To allow the ICU to communicate with the MCU the MCU DTE portmust be set to 9600 bps.

Procedure:

1 Select ASYNCH DATACONFIG function (86):


3 Select access mode:2=manual3=hotline4=AT

4 Select bit rate:1=1200 bps, 2=2400 bps3=4800 bps, 4=9600 bps, 5=19200 bps

5 Key in the Originating Idprovided by Inmarsat e.g. 33:Valid value: 0 . . 99

6 Enter settings:

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Access mode type - function 85

When the HIGH SPEED DATA CONFIG function no. 85 is set toext. modem, the EBM is used for all HSD channel connections. TheSaturn Bm terminal remains tuned to the selected CESAL channel evenfor the duration of a HSD call. The Main Control Unit (MCU) controls theantenna and maintains the high-power amplifier (HPA) ON for the durationof the call. The ICU performs frequency conversion and effectively con-nects the EBM to antenna transceiver circuits.

Procedure:




4 Leave the remainingparameters unchanged, e.g.:

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External High Speed Data - function 87Only accessible when the HIGH SPEED DATA CONFIG function (85) is set to 0=external.The function sets the parameters pertaining to the EBM services:



("hot" is relevant to Fixed Lease channels)


4 Select service:0=vbs1=fixed2=cn17Ext

5 Select Ocean Region:0=Atlantic Ocean Region West - Lease1=Atlantic Ocean East Region - Lease2=Pacific Ocean Region - Lease3=Indian Ocean Region - Lease

6 Set default levels:0=Disabled1=Enabled

7 Set Tx level, e.g. 194:Valid value: * 0 . . 200

*According to LESO directions

8 Set alarm level, e.g. 240:

Valid value: * 0 . . 255

and revert to IDLE:

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Manual call from ICU - activation

Figure 13a Manual call from ICU interconnections.

For manual call from the ICU an RS232 cable is needed to connectthe ICU Saturn DTE port to the MCU DTE port.

To set up a satellite connection:• Verify that the MANUAL button on the ICU is pressed (locking

switch). The indicator lights.• Press the EXT.MODEM button (non-locking switch) on the ICU to

make a call request.The ICU starts to transmit an AT command string to Saturn Bperiodically (the EXT.MODEM indicator flashes).

• When Saturn B acknowledges the command, the ICU switchesthe Comtech Modem into the RF path. The indicator lightssteadily.

• At the same time Saturn B turns the antenna high power amplifierON establishing the satellite circuit.

• The pre-programmed Comtech Modem is now connected to asimilar modem at the LES end. Data can be transported as soonas the modems are synchronised.

• If Saturn B rejects the call request from ICU, the AT commandfrom ICU will be repeated automatically as long as the MANUALbutton remains pressed.

• Release the MANUAL button to clear a connection.Activation of radio silence will immediately disconnect the satellitechannel. The repeat command mechanism will re-establish thechannel when the terminal is ready (radio silence disabled).

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Manual call from Handset - activation

Figure 14a Manual call from handset interconnections.

For manual call from the Display Handset or a standard telephone anRS232 cable is needed to connect the ICU Remote Control port tothe MCU DTE port.


• Set the handset/phone in data call mode by lifting the handset/phone and dialling *25*64#. Replace the handset/phone.

• The equipment will remain in this mode until the operator revertsto voice mode by dialing *25*#.

• To call lift the handset/phone, hear the data dial tone, and dial arandom number the regular way omitting the LES id, e.g.1 2 3 4 #.

• Saturn B turns ON circuit 107 (DSR) which switches the ICU toEBM mode and connects the Comtech Modem into the RF path.

• The satellite circuit is now established over the Comtech Modem.Let the handset/phone remain off-hook for the duration of the call.

• To clear the call place the handset/phone on-hook. Saturn B willclear the channel and disconnect the ICU by turning 107 OFF.

• A high-priority event (like cable rewind) will cause Saturn B toclear the assigned channel by transmitting ‘Channel Release’ tothe Lease Gateway, and turn 107 OFF.Activation of radio silence will immediately disconnect the satellitechannel. The call attempt must then be repeated to re-establishthe connection.

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Channel deactivation

• When clearing a hotline/manual call, the Saturn B MCU switchescircuit 107 to OFF.

• During a manual call from ICU, an event such as rewind forces theSaturn B terminal to clear the channel causes the MCU to issue a‘NO CARRIER’ result code to the ICU.

The ICU then immediately disconnects the Comtech Modem from theantenna and reverts back to normal mode.If the MCU is power cycled the MCU will search for a satelliteaccording to pre-selected procedures and re-aquire the CESALchannel of the selected Lease Gateway LES.

With hotline based connections the DTE equipment must cycle thehotline circuit (CallReq) to re-establish the lease channel. Withmanual activation from ICU, the ICU will attempt to re-aquire thelease channel automatically as long as the EXT.MODEM indicator isflashing. With manual activation from handset, the operator mustredial to re-establish the lease channel.

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Variable Bandwidth System (VBS) andVariable Bitrate (CN17Ext)

GeneralThe vbs and cn17ext are automatic demand assignment servicesavailable from some LES operators. The two service options havemany similarities. The Comtech Modem is programmed with a defaultconfiguration, but channels and data rates are set on a per call basis.The channels and data rates are negotiated through signallingsequences between the MES and the Lease Gateway.

The Comtech Modem setup is concluded by setting the modem inremote mode. The modem will then accept subsequent configurationcommand strings on its RS232 Remote Control port. This is achievedby connecting an RS232 cable between this port and the Saturn BPC port. The Saturn B reprograms the modem with channel numbersand data rates every time a satellite connection is being established.

With the vbs option Lease Gateway procedures can includetransferring selection information (destination address). For the hotdial access mode short number position 97 has been reserved forthis purpose. VBS users should consult Lease Gateway personell ondestination address requirements and program short number 97accordingly. Users are advised not to include an LES id and let theterminals use the default settings.Calls can initiated both from fixed and mobile.E

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Variable Bandwidth Service (vbs)

Special extensions to the Inmarsat signalling system enable theLease Gateway LES to assign a different data rate than requested bythe terminal. This introduces added flexibility in RF frequency poolmanagement. Also, the in-band signalling supports an EDMAC sub-channel in the Comtech Modem which is used for transferringselection information. Consequently a Lease Gateway can supportcircuit switching based on a destination address from the terminal.

Note! Controls the Comtech Modem setup based on informationreceived from the Lease Gateway LES (frequencies, levels etc.).

Figure 15a Demand Assignment interconnections.

The vbs option requires the following opening keys:• high_speed_data

• lease_mode• nera_ebm• comsat_vbs

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Figure 15b Example of Demand Assignment wiring.

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Variable Bandwidth Service (vbs) - hotline activation

Selecting HSD End Terminal Service - function 70

Procedure:


2 ENTER the list of connectors, andscroll down to the HSD connector:

(Default)


and revert to IDLE:


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Access mode type - function 85When the HIGH SPEED DATA CONFIG function no. 85 is set toext. modem, the EBM is used for all HSD channel connections. Theterminal remains tuned to the selected CESAL channel even for theduration of a HSD call. The Main Control Unit (MCU) controls the an-tenna and maintains the high-power amplifier (HPA) ON for the durationof the call. The ICU performs frequency conversion and effectivelyconnects the EBM to antenna transceiver circuits.

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4 Accept the remaining parameter settings:

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Disabling the Telex function - function 89

The telex function must be disabled during operation of the Saturn BEnhanced Bitrate Module:

1 Select ENHANCEDSETUP function (89):

2 ENTER list of enhanced functions,and scroll down to the required function:

Check settings (SETUP operationsrequire OPERATOR level):

If PASSWORD PROTECTED, referto "renter/owner Level".

3 Disable the Telex option:

0=passive, 1=active

4 Verify settings:

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External High Speed Data - function 87

The function no. 87 sets the parameters pertaining to the EBMservices:




4 Select service:0=vbs1=fixed2=cn17ext

5 Select bit rate:0=16 kbps1=32 kbps2=64 kbps4=128 kbps6 Select signalling mode:0=fixed symmetric1=variable symmetric2=fixed asymmetric3=variable asymmetric

7 Select required modem:0=Comtech ModemValid value: 0 . . 7

8 Select test loop:0=false1=true

9 Select loop back:0=CES digital loop 2=loop C1=loop B 3=loop D

and revert to IDLE:

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• Verify that the MANUAL button on the ICU has not been pressed• Let the DTE turn the CallReq control circuit ON. Saturn B detects

a transition on its 108 input and sends ‘Assignment Request’ tothe Lease Gateway.

• When receiving a ‘Channel Assignment’ from the Lease Gateway,Saturn B prompts the Comtech Modem to load data fromregister 1 and modify this with parameters received from theLease Gateway LES. Saturn B then turns circuit 107 ON, whichwill connect the ICU into the RF path and turn on the CallAckcircuit for the DTE.

• The reprogrammed Comtech Modem is now connected to asimilar modem at the LES end. Data can be transported as soonas the modems are synchronised.

• If the call request cannot be accepted 107 will remain OFF. TheDTE will have to cycle the CallReq signal and try again later.

• The DTE can clear a connection by turning CallReq OFF.• Saturn B clears a connection by turning 107 OFF.• A high-priority event (like cable rewind, radio silence) will cause

the Saturn B to clear the assigned channel by transmitting‘Channel Release’ to the Lease Gateway LES, and turn 107 OFF.The DTE equipment must then cycle the CallReq signal and makea new call request in order to re-establish the satellite circuit.

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Variable Bandwidth Service (vbs) - manual call setup

Manual call setup can be initiated from the handset or a standardphone on a TEL port.

To set up a satellite connection:• Verify that the MANUAL button on the ICU has not been pressed.

• Set the handset/analogue phone in data call mode by lifting thehandset/phone and dialing *25*64#. Replace the handset/phone.

• The equipment will remain in this mode until the operator revertsto voice mode by dialing *25*#.

• To call, lift the handset/phone, hear the data dial tone, and dial anumber the regular way omitting the LES id.

• Terminate number with the ‘#’ key.• If the call is made from the handset HSD RINGING and HSD

CONNECTED will in turn be displayed.• The satellite circuit is now established over the Comtech Modem.

Let the handset/phone remain off-hook for the duration of the call.

• To clear the call place the handset/phone on-hook. Saturn B willclear the channel and revert the ICU to normal mode by turning107 OFF.

• A high-priority event (like cable rewind, radio silence) will causethe Saturn B to clear the assigned channel by transmitting‘Channel Release’ to the Lease Gateway, and turn 107 OFF. Thecall attempt must then be repeated to re-establish the circuit.

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Variable Bitrate (cn17ext)

The Variable Bitrate option (cn17ext) provides a service similar to theVariable Bandwidth service option (vbs).

The Variable Bitrate (cn17ext) uses the Inmarsat signalling system toset up and clear a channel. There is no transfer of remote subscribernumber information. Calls can initiated both from fixed and mobile.

The cn17ext service option requires the following opening keys:

• high_speed_data• lease_mode• nera_ebm

Figure 16 Demand Assignment interconnections.

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Selecting HSD End Terminal Service - function 70

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Access mode type - function 85When the HIGH SPEED DATA CONFIG function no. 85 is set toext. modem, EBM is used for all HSD channel connections. The termi-nal remains tuned to the selected CESAL channel even for the durationof a HSD call. The Main Control Unit (MCU) controls the antenna andmaintains the high-power amplifier (HPA) ON for the duration of the call.The ICU performs frequency conversion and effectively connects EBMto antenna transceiver circuits.

Procedure:




4 Accept the remaining parameter settings:

and revert to IDLE:

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Disabling the Telex function - function 89

The telex function must be disabled during operation of the Saturn BEnhanced Bitrate Module:

1 Select ENHANCEDSETUP function (89):

2 ENTER list of enhanced functions,and scroll down to the required function:

Check settings (SETUP operationsrequire OPERATOR level):

If PASSWORD PROTECTED, referto "Renter/Owner Level".

3 Disable the Telex option:0=passive,1=active

4 Verify settings:

and revert to IDLE:

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External High Speed Data - function 87The function no. 87 sets the parameters regarding EBM services:




4 Select service:0=vbs1=fixed2=cn17ext

5 Select bit rate:0=16 kbps1=32 kbps2=64 kbps4=128 kbps

and revert to IDLE:

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Variable Bitrate (cn17ext) - manual call setup

Manual call setup can be initiated from the handset or a standardphone on a TEL port.


• Verify that the MANUAL button on the ICU has not been pressed.• Set the handset/analogu phone in data call mode by lifting the

handset/phone and dialing *25*64#. Replace the handset/phone.• The equipment will remain in this mode until the operator reverts

to voice mode by dialing *25*#, e.g. 1234#.• To call lift the handset/phone, hear the data dial tone, and dial a

random number the regular way omitting the LES id.

• Terminate number with the ‘#’ key.• If the call is made from the handset HSD RINGING and HSD

CONNECTED will in turn be displayed.• The satellite circuit is now established over the Comtech Modem.

Let the handset/phone remain off-hook for the duration of the call.

• To clear the call place the handset/phone on-hook. Saturn B willclear the channel and disconnect the ICU by turning 107 OFF.

• A high-priority event (like cable rewind, radio silence) will causethe Saturn B to clear the assigned channel by transmitting‘Channel Release’ to the Lease Gateway, and turn 107 OFF. Thecall attempt must then be repeated to re-establish the circuit.

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Saturn Bm Dual Antenna 75

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Saturn Bm Dual AntennaInstallation ............................................................. 77

Connecting up .................................................. 77Antenna switchover .......................................... 78Dual Antenna Switch power up ......................... 78Setting up cut-out zones ................................... 81Configuration .................................................... 83

CONTENTS


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Installation

Connecting upThe Dual Antenna Switch (DAS) is connected to the antenna portsof MCU A and MCU B. Control information from DAS is exchangedover the RS-485 bus SER1 and SER2 to the EXT_IO ports of bothMCUs. See next page.

The following is required:• Opening Key for Inmarsat Lease Mode for both Saturn B terminals.• Each MCU to be configured with:

- cut-out zones, using the Cutout Zones CONFIG function (88).- main or backup status, using the SPECIAL CONFIG function (78)

Figure 17 Outline dimensions of the Dual Antenna Switch (19" rack unit)

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Saturn Bm Dual Antenna78

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Antenna switchover

The MCU-A L-band signals (Rx/Tx) can be routed to Antenna-A or toAntenna-B. Switchover from one antenna to the other is achievedthrough the serial port of the Dual Antenna Switch. Only the L-bandsignals are switched.

The DC and control signals for tracking are always routed betweenMCU-A and Antenna-A and between MCU-B and Antenna-B.When MCU-A is using Antenna-B, MCU B will still receive L-bandsignals from Antenna-B for tracking.

Both Saturn Bm terminals can in principle be used separately whenthe Dual Antenna function is disabled.

Dual Antenna Switch power up

When the mains to the DAS is turned ON and the ACTIVE button isin its released state (ACTIVE indicator off), the DAS is set so thatMCU-A uses Antenna-A and MCU-B uses Antenna-B.

Only the ON indicator will light in this state.The two Saturn B installations will work as two separate independentsystems.When DAS is activated, the switch position is controlled through one ofthe DAS serial ports.

The two serial ports are connected in parallel when DAS is activated.The two ports are equal, so any MCU can be connected to any port.


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Figure 20a Example ofcut-out zone for antenna-A.

One setting: 10 - 45o

Figure 20b Example of cut-outzone for antenna-B combiningtwo settings: 0-8o and 302-360o

(a total cut-out zone of 68o, i.e.from 302o to 8o).

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Setting up cut-out zones

A special menu (Cut-Out Zones config function 88) on the DisplayHandset allows defining sectors in which the antenna view is blocked.There are three separate zone entries. Each zone is specified by lowazimuth, high azimuth, and elevation values along with enable/disablestatus.Azimuth values range from 0 through 360. Low azimuth value mustalways be less than the high azimuth (a zone cannot span the 360/0discontinuity). The elevation range is 0 through 90.See Setting up cut-out zones on the next page.Examples of cut-out zone combinations:

Zone entry Status Low azimuth High azimuth Elevation0 enabled 110 180 201 disabled 90 110 152 enabled 350 359 28

The azimuth values are relative to the ship’s heading (bow as 0 de-grees).The elevation cut-out zones start at 0 degrees up to the definedelevation values.

When the Antenna-A is tracking a satellite the antenna position ischecked against the defined cut-out zones. When the antenna isinside a defined cut-out zone a signal is passed from MCU-A prompt-ing the Dual Antenna Switch to shift the RF path of Antenna-B toMCU-A.MCU-A now receives channel signals through Antenna-B. MCU-Athen uses the antenna position information received from MCU-B tohold Antenna-A in position towards the satellite when inside the cut-out zone (antenna is blocked). Make sure that both MCUs have thesame and correct heading programmed in the READ/SET COMPASSfunction (29).Antenna-A will be reconnected to MCU-A when MCU-A decides thatAntenna-A again is outside the defined cut-out zone.The situation is reversed when Antenna-B enters a cut-out zone.MCU-B will now use antenna position information from MCU-A to holdAntenna-B in position for the duration of the blocking.

Installation cont`d

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The cut-out zone for each MCU is selected as follows:

1 Select CutOut ZonesCONFIG function (88):

2 Display the enabled cut-out zones:Use up/down arrow to selectzone entries.

3 Press ENTER to select mode status:

4 ENTER required status:

Pressing MORE/HELP shows choices:0=disabled,1=enabled

5 Key in the lowazimuth value:

6 Key in the highazimuth value:

7 Key in the elevation zone:

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Installation cont`d

Configuration

The DualAnt mode is set using function 78 "Special Configuration".The "main" MCU controls all communication on the EXT_IO bus.The "backup" MCU assumes a passive role on the EXT_IO busresponding only to polling signals.

Tracking must be enabled in function 73, Antenna Configuration.

The DualAnt mode function is selected as follows:

1 Select SPECIAL CONFIGfunction (78):

2 Enter SILENCE MODE

and press MORE/HELP:

3 Pressing ENTER once opensthe SILENT RADIO setup function,

and twice opens the DualAnt mode:

5 Enter the required mode no.:

0=off, normal operation.Dual Antenna option is not selected.1=main (A). The terminal is configured asMCU-A and carries all traffic.2=backup (B). The terminal is configured as MCU-B and provides analternative antenna for MCU-A.

and revert:

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Maintenance

General

No regular maintenance is required.

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Nera ASA

Nera SatCom AS

Bergerveien 12, PO Box 91

N-1375 Billingstad, Norway

Tel: +47 67 24 47 00

Fax: +47 67 24 46 21

www.nera.no

Sat B Extended Services

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Transcript of Sat B Extended Services