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Quantum and Evolution Series Installation and Operating Handbook

13-3

13.2 Tx Modulator Specifications

Parameter

Modem

IF Output Power Level

0 to –25dBm continuously variable in 0.1dB steps

L-band Output Power
Level

-5 to –30dBm continuously variable in 0.1dB steps

Output Level Stability

±0.5dB, 0ºC to 50ºC

Transmit Filtering

Intelsat IESS compliant.

= 0.35

Occupied Bandwidth

1.2 times Symbol Rate

Recommended Channel
Spacing

1.4 times Symbol Rate

Phase Accuracy

±2º maximum

Amplitude Accuracy

±0.2dB maximum

Carrier Suppression

-30dBc minimum

Output Phase Noise

As IESS-308, nominally 3dB better.

IF Output Frequency
Stability

<1ppm/yr

L-band Output
Frequency Stability

7.5E-8/yr with high stability reference option

IF Harmonics

Better than –55dBc/ 4kHz in band

L-band Harmonics

Better than –55dBc/ 4kHz in band, no worse than
–45dBc out of band to 5GHz

IF Spurious

Better than –55dBc/ 4kHz in band

L-band Spurious

Better than –55dBc/ 4kHz in band, no worse than
–40dBc out of band 10MHz to 5GHz

Transmit On/Off Ratio

55dB minimum

External Transmit Inhibit

By external contact closure or by TTL signal
applied to rear panel Alarms & AGC connector

Содержание Evolution

Страница 1: ... Innovation Blvd Witham Essex CM8 3UJ England State College PA 16803 U S A Tel 44 0 1376 515636 Tel 1 814 238 3450 Fax 44 0 1376 533764 Fax 1 814 238 3829 http www paradisedata com Copyright 2005 2010 Paradise Datacom Ltd All rights reserved Installation and Operating Handbook for Quantum and Evolution Series Satellite Modems ...

Страница 2: ...ection 5 1 5 3 Getting Started 5 1 5 4 Power Up 5 1 Chapter 6 Introduction 6 1 6 1 Overview 6 1 6 2 Hardware Options 6 2 6 2 1 IDR Option Card 6 2 6 2 2 G 703 Option Card 6 2 6 2 3 LVDS Option Card 6 2 6 2 4 HSSI Option Card 6 2 6 2 5 Quad E1 Option Card 6 2 6 2 6 Eurocom D1 Option Card 6 3 6 2 7 IP Traffic Option Card 6 3 6 2 8 Optional L band BUC Power Supplies 6 4 6 2 9 L band FSK DC Option Car...

Страница 3: ...7 188 7 4 14 IP Static Routes 7 191 7 4 15 Header Compression 7 192 7 4 16 Fetching Web Pages from a Remote Modem 7 194 7 4 17 Adaptive Signal Pre distorter 7 194 Chapter 8 Modem Concepts 8 1 8 1 Doppler Plesiochronous Buffering and Clocking 8 1 8 1 1 Transmit Clocking 8 2 8 1 2 Receive Clocking 8 4 8 1 3 Guidelines for Clocking Configuration 8 6 8 2 Framing and Drop Insert Overview 8 10 8 2 1 IBS...

Страница 4: ... Sat ABIS 8 61 8 16 FastLink Low latency LDPC 8 64 Chapter 9 Remote Control Protocol 9 1 Chapter 10 Data Interfaces 10 1 Chapter 11 Connector Pinouts 11 1 Chapter 12 Fault Messages 12 1 12 1 Transmit Faults 12 2 12 2 Transmit Warnings 12 3 12 3 Receive Faults 12 4 12 4 Receive Warnings 12 5 12 5 Unit Faults 12 7 12 6 Unit Warnings 12 8 12 7 Start up problems 12 8 Chapter 13 Specification Summary 1...

Страница 5: ...fications 13 10 13 13 Data Rate Specifications 13 10 13 14 Traffic Log Specifications 13 12 13 15 Common Specifications 13 12 13 16 Internet Traffic 13 13 13 17 BUC LNB facilities 13 13 13 18 Performance Graphs 13 14 Chapter 14 Glossary 14 1 Chapter 15 Customer Technical Support 15 1 ...

Страница 6: ...llite bandwidth requirements compared with legacy standards DVB S2 can be used in one of two ways Firstly DVB S2 can be used as a service in its own right e g the modem could be used to provide a DVB S2 outbound service combined with an SCPC inbound service Any combination of SCPC and DVB S2 Tx and Rx services are possible including both being SCPC or both being DVB S2 Secondly SCPC features can b...

Страница 7: ... Satellite Modems Paradise Datacom Quantum Series PD20 L band Satellite Modems Paradise Datacom Quantum Series PD60 IF Satellite Modems Paradise Datacom Quantum Series PD60 L band Satellite Modems Redundancy Switch operation is documented separately see Installation and Operating Handbook for Quantum and Evolution Series Redundancy Switches The Quantum PD155i Satellite Modem IP Router is documente...

Страница 8: ...e information in this handbook this cannot be guaranteed and the information contained herein does not constitute a product warranty A product warranty statement is provided separately to this handbook Paradise Datacom maintains a programme of continuous product improvement and reserves the right to change specifications without prior notice 2 4 GNU General Public Licence This product contains sof...

Страница 9: ...te the safety compliancy Please contact Customer Technical Support for further advice Operation of the equipment in an environment other than that stated in the specifications will also invalidate the safety compliancy The equipment must not be operated in an environment in which the unit is exposed to Unpressurised altitudes greater than 2000 metres Extremes of temperature outside the stated oper...

Страница 10: ...r voltage installation The positioning of the equipment must be such that the mains supply socket outlet for the equipment should be near the equipment and easily accessible or there should be another suitable means of disconnection from the mains supply The equipment is designed to operate from a TN type power supply system as specified in EN 60950 1 i e a system that has separate earth line and ...

Страница 11: ...available hardware options To ensure that the modem maintains compliance with electromagnetic compatibility standards please observe the following points The equipment must be operated with its cover on at all times If it is necessary to remove the cover for any reason then you must ensure that the cover is correctly refitted before normal operation For the baseband data interfaces all D type conn...

Страница 12: ...cooling should be provided This must include leaving adequate clearance around the ventilation holes on the sides and the fan on the back panel Connect the appropriate cables to the Transmit IF and Receive IF connectors at the rear of the unit Output power level can be controlled using the front panel menus The optimum input level for the demodulator is 45dBm 15dB 5 4 Power Up Power the unit and w...

Страница 13: ...ed Reed Solomon RS and Bose Chaudhuri Hocquenghem BCH outer FEC model specific A full range of terrestrial interfaces including RS422 V 35 RS232 Synchronous and Asynchronous LVDS HSSI Eurocom D1 Ethernet Internet Protocol IP and G 703 T1 E1 T2 E2 and T3 E3 There is also a G 703 variant that multiplexes and demultiplexes four E1 interfaces and can be used in a MultiMux configuration which multiplex...

Страница 14: ...interface positions 1 and 2 free and makes use of either the EIA530 connector in interface position 1 or 2 for balanced signals or BNC connectors interface position 3 for unbalanced signals 6 2 3 LVDS Option Card The LVDS option card part number P3001 provides LVDS on a D25 female connector The LVDS card fits in interface position 2 lower at the rear of the modem 6 2 4 HSSI Option Card The HSSI op...

Страница 15: ...s AMI coding Eurocom G interface at 16 or 32kbps on a 25 pin D male connector The Eurocom D1 EIA530 option card part number P3713 provides Eurocom D interface data rates of 16 to 2048kbps Eurocom G interface at 16 or 32kbps as well as EIA530 signals on the same connector supporting RS422 X 21 V 35 RS232 and balanced G 703 It uses a 25 pin D female connector 6 2 7 IP Traffic Option Card An Ethernet...

Страница 16: ...Note that the IP Traffic card is dedicated to processing IP satellite traffic only remote IP based M C including SNMP and access to the modem web server continue to be supported via the base modem RJ45 M C connector only New IP features available as software upgrades are constantly in development please contact Customer Technical Support for up to date details 6 2 8 Optional L band BUC Power Suppl...

Страница 17: ...nd 5662 5663 24V 130W P3536 48V 130W P3535 NJR 1W Ku band 5015 24V 25W P3532 NJR 1W Ku band 5075 24V 18W P3532 NJR 1 5W Ku band 5035 24V 24W P3532 NJR 2W Ku band 5076 5016 24V 37 5W P3532 NJR 3W Ku band 5037 24V 30W P3532 NJR 4W Ku band 5077 5017 24V 48W P3532 NJR 8W Ku band 5018 24V 170W P3536 48V 170W P3535 Codan 5W C band 6705 24V 60W P3532 48V 60W P3531 Codan 10W C band 6710 48V 105W P3535 Cod...

Страница 18: ...e also that the feature set is being expanded all the time please contact Customer Technical Support for up to date information Note that the following are provided as standard in the modem Tx Rx DR0 DR1 IRS VIT WIF AUPC HCP and ESC Feature SAF Code Description Transmit TX Controls access to the Tx service and is therefore required for any transmission to occur Receive RX Controls access to the Rx...

Страница 19: ... Rate TPCH Enables selection of the TPC FEC scheme at all terrestrial data rates Advanced ESC ESC Enables selection of the high rate asynchronous ESC channel in IBS SMS mode and asynchronous ESC access to the IDR 8kbps synchronous ESC channel as well as enabling selection of Closed network plus ESC mode Advanced Aux AUX Enables the replacement of one or both IDR 32kbps ADPCM audio channels with Au...

Страница 20: ...acceleration of TCP data over satellite This level of acceleration is available only with the IP Traffic option card TCP acceleration to 55Mbps Evolution PD55 or 60Mbps Quantum PD60 TCP55 Enables a Performance Enhancing Proxy that provides acceleration of TCP data over satellite This level of acceleration is available only with the IP Traffic option card Quad E1 option card second E1 port 2E1 Enab...

Страница 21: ...data rate of 25Mbps LDPC FEC LDPC55 Enables LDPC FEC scheme to a maximum data rate of 55Mbps Evolution PD55 or 60Mbps Quantum PD60 Adaptive signal pre distorter ASP Allows 16QAM constellations to be adaptively predistorted to counter the effects of nonlinear distortion in the communications path Requires modem hardware above a certain revision number please contact Customer Technical Support for d...

Страница 22: ...ables Paired Carrier data rates in the given range inclusive Paired Carrier data rate 5Mbps to 10Mbps PCME Enables Paired Carrier data rates in the given range inclusive Paired Carrier data rate 10Mbps to 15Mbps PCMF Enables Paired Carrier data rates in the given range inclusive Paired Carrier data rate 15Mbps to 20Mbps PCMG Enables Paired Carrier data rates in the given range inclusive Paired Car...

Страница 23: ...nge inclusive FastLink LDPC data rate 10Mbps to 20Mbps FL5 Enables FastLink low latency LDPC data rates in the given range inclusive FastLink LDPC data rate 20Mbps to 25Mbps FL6 Enables FastLink low latency LDPC data rates in the given range inclusive FastLink LDPC data rate 25Mbps to 55Mbps Evolution PD55 or 60Mbps Quantum PD60 FL7 Enables FastLink low latency LDPC data rates in the given range i...

Страница 24: ... used Unit OK Rx Traffic Rx fault or Rx disabled Not used Not used Rx OK Tx Traffic Tx fault or Tx disabled Not used Not used Tx OK Test Mode Normal mode Not used Test mode Not used Tx Carrier Carrier muted Not used 1 for 1 standby Carrier active Front Panel LED Status 6 4 2 LCD Display The backlit LCD is a graphical display formatted to give three lines of 40 text characters and is highly legible...

Страница 25: ...d locked Help screen Numeric entry mode 123 Alphabetic entry mode Abc Modem is on a Tx Edit screen Tx Modem is on an Rx Edit screen Rx Front Panel LCD Icons 6 4 2 1 Keypad The keypad see the diagram below is based on a sealed tactile membrane and allows full alphanumeric entry and navigation using arrow keys Front Panel Keypad ...

Страница 26: ... live and neutral lines Access to the fuses is provided by a slide out tray Both fuses are standard 20mm type rated T3 15A of the slow blow time delay type ALWAYS REPLACE THE FUSE WITH ONE OF THE SAME TYPE AND RATING Chassis Ground Stud This is an M4 stud for connecting a safety earth conductor directly to the chassis of the unit Tx IF Output Option This connector is a BNC female and can be used i...

Страница 27: ...C Aux access on this async connector is disabled This connector also provides the input port for an RS422 compatible Station Clock On line LED This LED mirrors the front panel Tx Carrier LED so that from the rear of the equipment the operator can tell if the carrier is off and which unit of a 1 1 pair is the offline unit Terrestrial Interface Connectors There are two terrestrial interface connecto...

Страница 28: ...ort replaces the shared ESC Aux access via the Async ESC connector on the main unit The Aux port provides 32 or 64kbps access to the IDR overhead in place of one or both of the IDR 32kbps ADPCM audio ESC channels In IBS SMS this port may be configured to provide either the IBS low rate INTELSAT oversampled ESC facility or a higher rate synchronous channel within the IBS SMS overhead Rx IF Input Op...

Страница 29: ...so that the M C port is removed from the bridge which may benefit security in some circumstances where it is important to separate the M C and IP traffic streams An M C IP address subnet mask and default gateway may be set in the modem When using TCP acceleration and the M C interface does not form part of the Ethernet bridge then a traffic IP address must be set in addition Note that the modem is...

Страница 30: ... following sections 7 1 1 Local Mode On shipping from the factory the modem defaults to Local mode which allows control of the modem from the front panel interface only Web users can however log in and view the modem settings while the modem is in Local mode Note that SNMP is disabled by default and therefore cannot be used as an alternative method of remote control until it is enabled When SNMP i...

Страница 31: ...by locking out remote admin users Note that unless the switch back is done local front panel interface control will time out in a similar way to remote admin users and thereby control may be taken away again by a remote admin user During the period between an admin user logging out and either another admin login or a command being issued via the local front panel interface to gain control no user ...

Страница 32: ...lots to be dropped or inserted the Down arrow key is used to enter a comma The Left arrow key moves the cursor to the left On a menu this is used to navigate between menu options When entering an alphanumeric value it moves the cursor to the preceding digit The Left arrow key has a special function when viewing the system log where it is used to move backwards in the log by 100 entries The Right a...

Страница 33: ... M C control s function Pressing the 0 key and Left arrow key together for a second time removes the Help text and reverts the display back to its previous contents Keyboard Lock The keypad can be locked against inadvertent use by holding down the 0 key and pressing the MAIN key together at the same time Pressing the two keys again at the same time unlocks the keypad LCD Contrast The contrast of t...

Страница 34: ...AF and the appropriate SAF code has not been enabled Please contact Paradise Sales who can issue a SAF key to unlock the feature Alternatively all SAF features can be enabled for a limited time as described in Section 8 5 The feature is advanced and the user level setting is basic This is a mechanism that has been added to simplify the user interface by hiding options that are less frequently used...

Страница 35: ...ng sub menus Status Displays modem operational status summary information Edit Allows modification of all modem configurable properties View Displays detailed operational status and read only configurable property values Test Controls the selection of test modes A user settable Modem Identifier is shown on the bottom line of the screen and is typically used to specify the physical location of the ...

Страница 36: ...Quantum and Evolution Series Installation and Operating Handbook 7 7 7 3 2 Status Menu Front Panel Status Menus ...

Страница 37: ...t terrestrial data rate Receive terrestrial data rate Transmit symbol rate Receive symbol rate Status Traffic Screen This screen is constantly updated with the following information When there is no transmit path fault then the message Tx OK since HH MM SS on DD MM YY is displayed where HH indicates hours MM indicates minutes SS indicates seconds DD indicates the day of the month MM indicates the ...

Страница 38: ...onfiguring o Mute Off the carrier has been muted by the user Status Demodulator Screen This screen is constantly updated with the following information The receive path Eb No figure energy per bit to spectral noise density ratio This is replaced by Es No energy per symbol to spectral noise density ratio when the Down arrow is selected The receive path final bit error rate BER Please note that this...

Страница 39: ...sabled then PCMA status will be shown as PCMA disabled The frequency offset between the two interfering overlapped carriers is shown on the second line The measured delay to the satellite is shown on the third line Once this value is established then the carrier acquisition time can be reduced by setting the Paired Carrier minimum and maximum satellite delays accordingly it is recommended that the...

Страница 40: ...isplays the following screen This screen shows the receive path final bit error rate BER in large font for easy viewing It shows the user settable Modem Identifier on the bottom line of the screen Selecting the Down arrow displays the following screen This screen shows the receive signal power level in large font for easy viewing It shows the user settable Modem Identifier on the bottom line of th...

Страница 41: ... OK Selecting the Down arrow displays the following screen This screen is constantly updated with the following information Distant Eb No this is the instantaneous Eb No measured by the remote modem while AUPC is enabled Target this is the target Eb No level set for the remote modem Delta power this is the instantaneous offset that has been applied to the modem Tx power output level to maintain th...

Страница 42: ...ated with the following information Output this is the output power in dBm at the waveguide flange or Off if the BUC is not transmitting Mode in Terminal closed loop mode this presents the Terminal RF output power level i e the modem output power to the BUC and the BUC attenuation level In open loop mode Terminal RF and BUC attenuation data is not shown and instead the mode is shown as Independent...

Страница 43: ... the transmit path edit submenu which allows all of the modem Tx properties to be changed Rx This option selects the receive path edit submenu which allows all of the modem Rx properties to be changed Unit This selects the unit edit submenu This allows all of the modem properties that are independent of the Tx and Rx paths to be changed Memories This option selects the configuration memory submenu...

Страница 44: ...Quantum and Evolution Series Installation and Operating Handbook 7 15 7 3 3 1 Edit Tx Menu Front Panel Edit Tx Menus ...

Страница 45: ...e controlled Carrier This leads to a submenu that allows the carrier frequency power spectrum inversion and AUPC Automatic Power Up link Control to be controlled Interface This submenu is used to configure the Quad E1 interface card and Multimux Tx path 7 3 3 1 1 Edit Tx Service Screen Options Off The Tx service is switched off Closed network This mode adds no overhead to the data and is compatibl...

Страница 46: ...d requires the OM 73 SAF feature DVBS2 Quantum only This selects the DVB S2 service When selected a pure DVB S2 service is provided with all SCPC features such as Drop and Insert IBS ESC channel etc disabled Note that there are two ways of enabling DVB S2 and this particular option should be used only for IP which through the use of standard IP over DVB encapsulation methods is interoperable at a ...

Страница 47: ...ications to benefit from the bandwidth saving efficiencies and extra robustness of DVB S2 Edit Tx Service IDR Frame Format Screen Options Low rate T1 E1 The 12 bit overhead defined for T1 E1 operation in IESS 308 is used High rate T2 E2 The 4 bit overhead on each of three subframes defined for T2 E2 operation is used Factory default Low rate T1 E1 Description Controls what IDR frame format is used...

Страница 48: ...vel is set to Advanced this allows configuration of framing timeslots and overhead Edit Tx Baseband Mode Screen Options Continuous This selects normal continuous data interface operation Drop MUX This requires the Drop and Insert SAF features to be enabled It processes a T1 or E1 PCM bearer with Tx data being dropped from specific timeslots of the bearer on the Rx side data can be inserted back in...

Страница 49: ...00 Maximum value Modem specific see datasheet for particular modem model Step size 1 Factory default 2048000 Description Terrestrial bit rate This is used in Continuous mode but is automatically set in other baseband modes The upper data rate limit is set according to which SAF data rates have been enabled and is model specific Note that the full data range is not available in every mode of operat...

Страница 50: ...s option specifies whether Channel Associated Signalling CAS information is present in Timeslot 16 TS order This controls whether timeslot reordering is allowed Drop mode This specifies the framing format for Drop MUX operation G732 sig This option controls whether CAS information is processed and routed through the satellite T1 sig This specifies whether Robbed Bit Signalling RBS information is p...

Страница 51: ... frame insertion Edit Tx Baseband Advanced Framing CAS Screen Options CAS When CAS is selected the CAS will be conveyed from end to end of the link using the IBS overhead No CAS This indicates that a terrestrial CAS multiframe and abcd signalling nibbles for each timeslot are not present Consequently Timeslot 16 may be dropped inserted in a similar manner to other timeslots Factory default No CAS ...

Страница 52: ...eslots can be reordered within the G 732 frame prior to transmission In some applications this feature can remove the need for separate Digital Access Cross Connect DACCs equipment that is used to re arrange timeslots Edit Tx Baseband Advanced Framing Drop Mode Screen Options G 732 T1 D4 T1 ESF Factory default G 732 Description Bearer type selection for Drop MUX operation Remap timeslot order Do n...

Страница 53: ...d Framing CAS in TS16 Screen Options No CAS CAS Factory default No CAS Description Controls whether CAS information is processed and routed through the satellite Edit Tx Baseband Advanced Framing T1 RBS Screen Process CAS in TS16 No CAS 1 No CAS 2 CAS T1 signal contains RBS No RBS 1 No RBS 2 RBS ...

Страница 54: ...fault No RBS Description Specifies whether Robbed Bit Signalling information is present in the traffic source When selected drop insert data is placed into the bearer by the insert MUX in the same frames from which it came It is still possible to drop from and insert into different timeslots however the data frames containing RBS are placed in the same relative positions within the terrestrial mul...

Страница 55: ...732 frame does contain a checksum that should be checked for errors If enough errors accumulate then a Tx Drop MUX BER alarm will be raised Input BER 1E 3 Factory default Ignore CRC Description This option is applicable only with G 732 Drop Insert bearers and controls the processing of any terrestrial checksum Edit Tx Baseband Advanced Framing CRC Frame Re acquisition Screen Frame re acquisition o...

Страница 56: ...ntation of ITU G 704 is carried out forcing re acquisition of the terrestrial Drop Insert frame synchronization if CRC synchronization cannot be achieved within 8ms Edit Tx Baseband Advanced Timeslots Menu This menu contains the following options Number used This controls the number of timeslots dropped off the terrestrial bearer and sent over the satellite Timeslots This option is used to select ...

Страница 57: ...32 operation timeslot numbers 1 32 are used and for T1 D4 and T1 ESF timeslot numbers 1 24 are used Timeslots can be entered as individual numbers separated by commas or as an inclusive range denoted by the first and last timeslot numbers in the range with a hyphen between them For example 0 18 31 17 16 1 swops timeslots groups 18 to 31 with 1 to 16 and additionally reverses timeslots 1 to 16 Note...

Страница 58: ...Baseband Advanced Timeslots Number Used Screen then the new value will not be accepted and the modem will remain on this screen Note that when a valid sequence of timeslot numbers is accepted it may take several seconds for the display to update due to the level of internal processing involved ...

Страница 59: ...lots are all part of the same stream Edit Tx Baseband Advanced Timeslots Idle Code Screen Options Leave on bearer The Tx data remains on the bearer and will be accessible to downstream equipment unless Rx data is inserted over it Replace with Idle code The Tx data is replaced as follows MSB to LSB G 732 timeslots are replaced with 01010101 G 732 CAS in TS16 is replaced with 0101 if CAS signalling ...

Страница 60: ...head in IBS SMS mode allowing both the low and high rate ESC channels to be set up The different options are presented as a sequence of screens that configure all aspects of the overhead IDR This controls the overhead in IDR mode allowing the IDR 8kbps ESC channel and audio channels to be set up and the routing of multiple backward alarms in IDR mode It also allows Aux data to be allocated in plac...

Страница 61: ... interface character length 8 bits 1 7 bits 2 8 bits ESC Character Length Screen ESC interface RS485 New RS485 ESC Interface Screen ESC interface parity polarity None New None ESC Parity Screen Enable backward alarm On 1 Off 2 On ESC Backward Alarm Screen IBS SMS Aux mode Off New Off Aux Mode Screen Aux interface RS485 1 RS232 2 RS422 3 RS485 4 IP ...

Страница 62: ... baud 19200 baud 38400 baud 57600 baud 76800 baud 115200 baud Factory default 9600 baud Description Sets the baud rate of the ESC UART ESC Character Length Options 7 bits 8 bits Factory default 8 bits Description Sets the number of bits in an ESC UART character ESC Parity Options None Even Odd Factory default None Description Controls the ESC UART parity setting ...

Страница 63: ...onous Factory default Off Description Controls the operating mode of the IBS Aux channel controlling the allocation of overhead between the Aux and ESC interfaces AUX Interface See the description under Edit Unit Interface Aux Interface Screen Edit Tx Baseband Advanced Overhead IBS SMS Screens The following sequence of screens depending on what SAF options are enabled will appear consecutively whe...

Страница 64: ...erhead P230 compatible New Maximum overhead High rate ESC Usage Screen Max ESC rate 9600 Maximum ESC Baud Rate Screen ESC interface character length 8 bits 1 7 bits 2 8 bits ESC Character Length Screen ESC interface parity polarity None None New None ESC Parity Screen IBS SMS Aux mode Off New Off Aux Mode Screen ESC Interface RS485 RS485 New RS485 ESC Interface Screen ...

Страница 65: ...on base modem Factory default Off Description Controls whether the IBS high rate asynchronous ESC channel is enabled High rate ESC Usage Options P230 compatible Maximum overhead Factory default Maximum overhead Aux interface RS485 1 RS232 2 RS422 3 RS485 4 IP Aux Interface Screen ESC level ch1 0 to 38dB 0 Step 2dB New 0 ESC Audio Levels Screen Enable backward alarm On 1 Off 2 On Backward Alarm Mod...

Страница 66: ...criptions under Edit Tx Baseband Advanced Overhead Closed Network Plus ESC Screens IBS SMS Aux Mode Options Off Intelsat over sampled Synchronous Factory default Off Description Controls the operating mode of the IBS Aux channel controlling the allocation of overhead between the Aux and ESC interfaces ESC Interface See the description under Edit Unit Interface ESC Interface Screen AUX Interface Se...

Страница 67: ...rhead IDR Screens The following sequence of screens will appear consecutively when the IDR overhead option is selected IDR 8k ESC Off 1 Off 2 Asynchronous 3 Synchronous IDR 8k ESC Screen ESC interface baud rate 9600 baud New 9600 baud ESC Baud Rate Screen ESC interface character length 8 bits 1 7 bits 2 8 bits ESC Character Length Screen ESC interface parity polarity None None New None ESC Parity ...

Страница 68: ...rface Screen IDR ESC audio encoding 2x32K in V1 V2 2x32K in V1 V2 New 2x32K in V1 V2 IDR ESC Audio Encoding Screen IDR Aux data Off 1 Off 1 32K 2 64K IDR Aux Data Screen Backward alarm mode 1 4 external New 1 4 external Backward Alarm Mode Screen Aux interface RS485 1 RS232 2 RS422 3 RS485 4 IP Aux Interface Screen ...

Страница 69: ... ESC Screens ESC Interface See the description under Edit Unit Interface ESC Interface Screen IDR ESC Audio Encoding Options Off When off V1 and V2 are omitted and consequently only 32kbps overhead is transmitted or the 64kbps of V1 and V2 overhead can be reallocated to Aux data via the IDR Aux mode setting The 32kbps overhead includes FAS backward alarms and an 8kbps synchronous ESC channel 2x16k...

Страница 70: ...ted to Aux data via the Aux controls IDR Aux Data Options Off No Aux data is placed in the overhead 32K 32kbps of Aux data replaces the data in IDR audio ESC channel V2 requires the IDR audio mode setting to be 2x16k in V1 or 1x32k in V1 64K 64kbps of Aux data replaces the data in IDR audio ESC channels V1 and V2 requires the IDR audio mode to be set to Off Factory default Off Description Controls...

Страница 71: ...ly linked from Rx Fail to BA1 or BA1 4 these alarms respond similarly to the normal single backward alarm Requires Custom SAF feature 7 3 3 1 3 Edit Tx Clocks Screen Options Tx Clock In The external clock supplied on the interface Clock In line will be used Should this clock fail then the modem will switch to an internal backup clock Internal The modem outputs a clock on the Int Tx Clock Out line ...

Страница 72: ...t this point When asynchronous operation is switched on then the external RS232 clock is ignored and the data is clocked by an oversampled internal clock This can help overcome data marginal type of problems in some circumstances If the Tx clock is set to Internal a G 703 interface card is fitted but NOT currently selected and the G 703 clock extension SAF feature is enabled then the following men...

Страница 73: ...Quantum and Evolution Series Installation and Operating Handbook 7 44 T1 Factory default OFF Description Allows a high stability reference signal to be transferred across satellite ...

Страница 74: ...e to TCM TPC and FastLink LDPC 16QAM Requires 16QAM SAF feature Applicable to TPC and FastLink LDPC 8QAM Requires 8QAM SAF feature Applicable to FastLink LDPC 16APSK Requires 16APSK SAF feature Applicable to FastLink LDPC DVB S2 16APSK does not require this SAF 32APSK Requires 32APSK SAF feature Applicable to FastLink LDPC 64QAM Requires 64QAM SAF feature Applicable to FastLink LDPC Factory defaul...

Страница 75: ...preferred for bandwidth efficiency Edit Tx Modulation Advanced Menu This menu can be selected when user level is set to Advanced following the setting of the modulation type It contains the following options Symbol mapping This determines how data is mapped to signal constellations in QPSK mode Bit order This controls whether I and Q bits are swapped in BPSK mode Edit Tx Modulation Advanced I Q Sy...

Страница 76: ...ng options Inner This submenu controls the Inner FEC settings for the modem Outer This submenu controls the Outer Reed Solomon FEC settings for the modem Edit Tx FEC Inner Menu This menu contains the following options FEC This selects the Inner FEC type Rate This selects the FEC rate The next table defines normal operation with respect to FEC mode FEC rate and modulation scheme Tx swop BPSK I Q bi...

Страница 77: ...Quantum only 1 3 2 5 QPSK DVB S2 Quantum only 3 5 QPSK 8PSK DVB S2 Quantum only 2 3 4 5 5 6 8 9 9 10 QPSK 8PSK 16APSK FastLink LDPC 0 498 BPSK FastLink LDPC 0 531 QPSK FastLink LDPC 0 636 0 707 0 795 QPSK 8PSK 8QAM FastLink LDPC 0 723 0 775 0 825 0 847 16QAM 16APSK FastLink LDPC 0 775 0 825 0 882 0 935 32APSK FastLink LDPC 0 825 0 882 0 935 0 956 64QAM Table of Normal Operation with respect to FEC...

Страница 78: ...o the noise SmartLink is described in more detail in Section 8 13 However the DVB S2 standard does not directly support various features traditionally used in SCPC links such as Drop and Insert ESC channel remote M C control AUPC IDR audio channels etc SmartLink allows ALL modem features that rely on SCPC framing including IBS SMS IDR Closed Network plus ESC etc to be used in conjunction with DVB ...

Страница 79: ...s that optimize either BER performance or latency even further giving the flexibility to match FEC performance more closely to the constraints of the satellite application In many if not all applications FastLink should be able to replace TPC or conventional LDPC Note that FastLink does not suffer from the error floor flaring problem of earlier generation LDPC FECs and consequently does not requir...

Страница 80: ...DVB S2 SmartLink only 0 477 21 44 TPC only 0 493 1 2 Paradise TPC only 1 2 Viterbi Sequential DVB S2 SmartLink only 3 5 DVB S2 SmartLink only 2 3 TCM only 0 666 2 3 Paradise TPC only 3 4 Viterbi Sequential DVB S2 SmartLink only 75 3 4 de facto TPC only 4 5 DVB S2 SmartLink only 0 789 Paradise TPC only ...

Страница 81: ...VB S2 SmartLink only 7 8 Viterbi Sequential 0 875 7 8 de facto TPC only 0 875 7 8 Paradise TPC only 8 9 DVB S2 SmartLink only 9 10 DVB S2 SmartLink only 0 929 Paradise TPC only 0 498 FastLink only 0 531 FastLink only 0 636 FastLink only 0 707 FastLink only 0 723 FastLink only ...

Страница 82: ... the data stream against errors In DVB S2 IP multistreaming mode then there will be one FEC rate screen shown for each stream as each can be set independently Not all FEC rates are available for all modulations and FEC schemes please check the Table of Normal Operation with respect to FEC Mode FEC Rate and Modulation Scheme shown in the Edit Tx FEC Inner Menu section Note Paradise TPC rate 7 8 was...

Страница 83: ...the Sequential encoder decoder to be Comstream compatible at R3 4 Already compatible at R1 2 the CM701 does not have R7 8 available Edit Tx FEC Frame Type Screen The following screen may be shown at this point after the FEC has been selected in DVB S2 IP multistreaming mode then there will be one of these screens for each stream Options Short Selects a DVB S2 frame size of 16200 bits Comstream Seq...

Страница 84: ... then there will be one of these screens for each stream Options Off On Factory default Off Description Pilot tones are an optional part of DVB S2 They provide an unmodulated tone at regular intervals in the transmitted data that can help receivers to lock and stay in lock particularly when using higher order modulation schemes in noisy environments They add an overhead of around 2 5 to the transm...

Страница 85: ...Reed Solomon fails catastrophically Once the error correction threshold is passed then the codec considers it uncorrectable and passes the entire block uncorrected i e the error rate goes from 0 to no error correction in one step There is a small transitional area where due to the distribution of the errors the errors in some blocks may be just below the threshold and therefore fully correctable a...

Страница 86: ...s the Reed Solomon codeword length i e k data symbols n k parity symbols where n k 2 symbol errors per codeword can be corrected RSK This sets the number of data symbols per Reed Solomon codeword range n 2 to n 20 in steps of 2 Interleave This is used to set the Reed Solomon interleaver depth which controls resilience to burst errors larger depth gives best BER through data dispersal at the expens...

Страница 87: ...rd length i e k data symbols n k parity symbols where n k 2 symbol errors per codeword can be corrected Edit Tx FEC Outer Advanced RSK Data Length Screen Units symbols Minimum value 40 Maximum value 253 Step size 2 Factory default 112 Description Number of data symbols per Reed Solomon codeword range n 2 to n 20 in steps of 2 RS n value 60 to 255symbols 126 Step 1 symbols New 126 RS k value 40 to ...

Страница 88: ... Menu This menu contains the following options Enable This is the master control for all scramblers It can be used to switch scrambling off or on When on the choice of scrambler can be made automatically by the modem or selected manually Type This option selects the type of scrambler to apply when manual control of the scrambler type is active i e when automatic selection is switched off The follo...

Страница 89: ...nd RS mode is Off OM 73 Turbo default if FEC mode is TPC available only if FEC mode is TPC Closed Network Plus ESC IBS SMS default if terrestrial data rate is 32000 and RS mode is Off Intelsat RS default if RS mode is On V 35 OM 73 Turbo available only if FEC mode is TPC OM 73 OM 73 Table of Valid Scrambler Options in Normal Operation Edit Tx Scrambler Enable Screen Options Off Normal Other Factor...

Страница 90: ...he errors degrading performance Turbo Only available in when the TPC FEC is selected OM 73 Intelsat Reed Solomon Only available when the Reed Solomon FEC is selected Factory default V 35 Description Controls the type of scrambler to apply Only available when scrambler selection is set to Other Edit Tx Scrambler Type V 35 Screen Options Intelsat normal Scrambler type V 35 New V 35 V 35 scrambler ty...

Страница 91: ...ellite Inversion This controls whether the I and Q channel outputs are swapped to give Spectrum Inversion Roll off This controls the slope gradient of the carrier at its edges and therefore controls the occupied bandwidth Advanced This submenu provides AUPC Automatic Up link Power Control BUC Type selection and BUC control menus AUPC attempts to maintain the remote Eb No at a specified target leve...

Страница 92: ...select Ack Pwr Bre following a power outage Rx enabled When enabled then the carrier will be switched off whenever an Rx traffic fault is present in the modem RTS enabled When RTS is enabled then the carrier is controlled by the interface RTS line Factory default Off Description Tx carrier control Edit Tx Carrier Power Screen IF Modem Units dBm Minimum value 25 0 Maximum value 0 Step size 0 1 Fact...

Страница 93: ...x L band output power level Edit Tx Carrier Frequency Screen IF Modem Units MHz Minimum value 50 0000 Maximum value 180 0000 Step size 0 0001 Factory default 70 0000 Description Tx IF frequency used to transmit to satellite Note that values between 90 and 100MHz cannot be selected RF output power 30 to 5dBm 10 0 Step 0 1dBm New 10 0 IF carrier freq 50 to 90 100 to 180MHz 070 0000 Step 100Hz New 07...

Страница 94: ...e 0 0001 Factory default 950 0000 Description Tx L band frequency used to transmit to satellite Edit Tx Carrier Inversion Screen Factory default Off Description Controls whether the I and Q channel outputs are swapped Edit Tx Carrier Roll off Screen Options 35 This selects a filter roll off factor of 35 IF carrier freq 950 to 1950MHz 950 0000 Step 100Hz New 950 0000 Rx spectral inversion On 1 Off ...

Страница 95: ...nsult Customer Technical Support if in doubt Edit Tx Carrier Advanced AUPC Menu This menu contains the following options Mode This controls the ability to attempt to maintain the remote Eb No at a specified target level by varying the local modem transmit power level Target Eb No This is used to set a target Eb No for the distant modem that this modem tries to maintain by adjusting the transmit po...

Страница 96: ...t is also controlling another modem via AUPC If AUPC is switched off in the remote modem then the modem in question will not respond to requests to provide Eb No information See Section 8 3 for a full description of AUPC Edit Tx Carrier Advanced AUPC Method Screen Options Normal This should be selected when two Quantum Evolution modems are at either ends of the satellite link Self In this mode the...

Страница 97: ... set to zero so the carrier returns to its nominal power Freeze at current value The carrier power is frozen at its current value Set to max The AUPC delta power increases to the maximum power limit as set on the AUPC Max positive delta power screen Factory default Set to Nominal Description This controls the AUPC delta power action in the event of losing the incoming carrier In most cases this sh...

Страница 98: ...distant Eb No that AUPC tries to maintain by adjusting the Tx power level Edit Tx Carrier Advanced AUPC Power Offset Screen Units dBm Minimum value 0 Maximum value 25 Step size 0 1 Factory default 1 Description This is the maximum increase in Tx power level that AUPC is allowed to make to maintain distant Eb No Target remote EbNo 0 1 to 14 9dB 3 1 Step 0 1dB New 3 1 Max power offset 0 to 25dBm 1 0...

Страница 99: ...power or EIRP measured in dBm or dBW BUC type Allows the type of BUC to be selected from a list of supported BUCs with the option of either open loop control Independent mode or closed loop control Terminal mode In closed loop mode the modem attempts to maintain a constant BUC output power by adjusting the modem output power and BUC attenuation level PSU If the modem is fitted with an internal DC ...

Страница 100: ... dBm dBw Minimum value 99 Maximum value 99 Step size 0 1dB Factory default 0 Description This screen allows the modem to display and the user to edit the final SHF power instead of the IF carrier level Use the up down arrows to change the sign Once set the user is navigated to the Tx power units selection screen Edit Tx Carrier Advanced BUC Power Units Screen This allows the user to set the modem ...

Страница 101: ...s to RFT5000 LO frequency 15450 MHz User FSK enabled but user must set LO frequency of BUC C5 85 6 725 GHz CODU Uses RS485 comms to CO unit LO frequency 4900MHz Ku 14 14 5 GHz CODU Uses RS485 comms to CO unit LO frequency 13050MHz Ext Ku 13 75 14 5 GHz CODU Uses RS485 comms to CO unit LO frequency 12800MHz RFT5000 C Uses RS485 comms to RFT5000 LO frequency 4900 MHz C 5 8 6 425 GHz VSAT Only availa...

Страница 102: ...n other than None is selected then the user is taken to the following Terminal Mode screen Edit Tx Carrier Advanced BUC Terminal Mode Screen This allows the user to select either open loop control Independent mode or closed loop control Terminal mode In closed loop mode the modem attempts to maintain a constant BUC output power by adjusting the modem output power and BUC attenuation level In open ...

Страница 103: ...option to manually set the frequency shift is not presented Edit Tx Carrier Advanced BUC Power Screen Units W Minimum value 0 Maximum value 999 Step size 1W Factory default 0 000 Description This screen tells the modem what the BUC power class is However this can be ignored unless a CO has been selected with a power output greater than 170W Edit Tx Carrier Advanced BUC DC Supply Screen This screen...

Страница 104: ...modem up the coaxial site cable to the BUC Edit Tx Carrier Advanced BUC Output Screen This switches the BUC Tx carrier on and off independently of the modem s Tx carrier on off control This may be useful where one BUC carries several carriers passively combined but with one modem providing DC 10MHz Ref FSK and you wish to mute all the carriers Edit Tx Carrier Advanced BUC Attenuation Screen 10MHz ...

Страница 105: ... controls whether BUC services i e DC supply and 10MHz reference stay with the on line modem or switch to the standby modem when a 1 for 1 switchover occurs in a 1 for 1 redundant pair of modems Note that FSK communications will always be switched over 7 3 3 1 8 Edit Tx Interface Menu This menu has options for configuring the Tx side of each of the four terrestrial E1 ports on either a Quad E1 or ...

Страница 106: ... Ater The specified port on the Quad E1 card is being used between a TRAU Transcoding and Rate Adaption Unit and BTS Base Transceiver Station Other The specified port on the Quad E1 card is not being used in any of the above situations This option allows timeslots for the particular port on the Quad E1 card to be configured manually Factory default Off Description This selects the operating mode f...

Страница 107: ... size 1 Factory default 0 Description Controls which terrestrial timeslots are dropped i e multiplexed into the satellite frame Timeslots cannot be reordered when being used with the Quad E1 card Timeslots can be entered as individual numbers separated by commas or as an inclusive range denoted by the first and last timeslot numbers in the range with a hyphen between them For example 0 17 18 31 No...

Страница 108: ... Rx data is inserted over it Replace with Idle code The Tx data is replaced with Idle code Factory default Leave on bearer Description Controls whether dropped timeslots are replaced with Idle code in relation to the specific port on the Quad E1 card If the Rx data is to be inserted into the same timeslots as the Tx data has been dropped from then the Rx data will replace the Tx data and therefore...

Страница 109: ...t 64kbps Slot There are four 2 bit wide slots per channel 16kbps per slot Off This setting indicates that the particular port on the Sat Abis card is not being used Factory default Off Description Each port on the Sat ABIS card consists of 24 T1 or 32 E1 channels or timeslots we will use the term channels here There is no ABIS standard that defines how these channels are to be used in practice A B...

Страница 110: ...of the traffic can use channels or slots but not both and similarly the signal portion of the traffic can use channels or slots but not both Edit Tx Interface Slots Channels Screen Sat ABIS interface card Both of the above screens will be shown in turn Units Minimum value 0 Maximum value 31 Step size 1 Factory default 0 Description Controls which slots or channels are allocated to voice or signali...

Страница 111: ...ation between voice and signaling should not overlap Numbers can be entered as individual numbers separated by commas or as an inclusive range denoted by the first and last numbers in the range with a hyphen between them Note that on this screen the Down arrow key is used to enter a comma and the Up arrow key is used to enter a hyphen The 0 key pressed together at the same time as the Right arrow ...

Страница 112: ...Quantum and Evolution Series Installation and Operating Handbook 7 83 7 3 3 2 Edit Rx Menu Front Panel Edit Rx Menus ...

Страница 113: ... This leads to a submenu that allows the frequency and spectrum inversion to be controlled Rx Tx This option allows the receive path to be automatically configured to be the same as the transmit path thereby simplifying set up There are a number of exceptions including carrier frequency spectral inversion timeslots and clocks Interface This submenu is used to configure the Rx path of the Quad E1 i...

Страница 114: ...ing format for Drop MUX operation Bearer This controls the origination of a terrestrial bearer from the Insert MUX G732 sig This option controls whether CAS information is processed and routed through the satellite T1 sig This specifies whether Robbed Bit Signalling RBS information is present in the traffic source ABCD This determines the action to be taken with respect to the Rx CAS ABCD signalli...

Страница 115: ...Screen Options Signalling bits abcd normal Signalling bits abcd AIS Signalling bit b 1 acd normal Signalling bits ab 1 cd normal Factory default Signalling bits abcd normal Description Determines actions to be taken with respect to Rx CAS signalling block code Edit Rx Baseband Advanced Timeslots Menu This menu contains the following options Number used This indicates the number of timeslots sent o...

Страница 116: ... from the satellite are inserted into the terrestrial bearer Edit Rx Baseband Advanced Timeslots Number Used Screen See the description of the transmit path equivalent Edit Rx Baseband Advanced Timeslots Timeslots Screen See the description of the transmit path equivalent Edit Rx Baseband Advanced Timeslots Maintain ID Screen See the description of the transmit path equivalent Edit Rx Baseband Adv...

Страница 117: ...er Edit Rx Baseband Advanced Overhead Menu See the description of the transmit path equivalent Edit Rx Clocks Menu This menu contains the following options Source This selects the receive path clock source Buffer This option sets the buffer capacity for received data This provides Doppler and plesiochronous buffering see Section 8 1 for a full description of buffering Advanced This menu offers adv...

Страница 118: ...er shift whilst providing the required interval between buffer slips Internal The internal reference clock is used to clock data to the terrestrial port This requires the receive buffer to be set as per the Tx Clock In option Station If the station clock frequency is the same as the Rx data rate then the station clock is used directly If the station clock is a different frequency to the Rx data ra...

Страница 119: ...iption Allows a high stability reference signal to be transferred across satellite 7 3 3 2 4 Edit Rx Clocks Buffer Screen Units ms Minimum value 0 Maximum value 99 Step size 1 Factory default 8 Description Buffer capacity for received data This is used when the Rx clock is not set to Satellite Should the capacity be exceeded unflow or overflow and the buffer slips then it will slip by exactly half...

Страница 120: ...ial multiframes when necessary to maintain multi frame sync when the buffer slips Manual centre This allows the Rx buffer to be recentred manually Edit Rx Clocks Advanced Auto Centre Screen Factory default On Description Controls whether the Rx buffer is centred following an Rx path recovery from failure This should be disabled where minor outages occur where the errors or synchronisation losses c...

Страница 121: ...ive path modulation scheme Sweep This controls the Rx signal sweep configuration Sweep width This controls the Rx signal sweep width Advanced This controls symbol mapping in relation to how data is mapped to signal constellations in QPSK mode it also controls whether I and Q bits are swapped in BPSK mode Edit Rx Demodulation Screen See the description of the transmit path equivalent The table show...

Страница 122: ... at very low data rates by setting a sweep width that is smaller than the default Factory default Normal Description Controls the Rx signal sweep configuration Edit Rx Demodulation Sweep Width Screen Units kHz Minimum value 1 Maximum value 250 Step size 1 Factory default 32 Description Controls the Rx signal sweep width when the Sweep mode is set to Other This is a setting i e the total width is t...

Страница 123: ...ues to try to track the signal This is useful where there may be a temporary obstruction to the satellite signal such as from a helicopter as it potentially allows the demodulator to regain the carrier more quickly than would otherwise be the case Edit Rx Demodulation Advanced I Q Symbol Mapping Screen See the description of the transmit path equivalent Edit Rx Demodulation Advanced Bit Order Scre...

Страница 124: ...ath equivalent See the Edit Tx FEC Outer Advanced description for a table of Reed Solomon N K and Interleaver Depth values used in normal operation Edit Rx FEC Outer Advanced RSN Codeword Length Screen See the description of the transmit path equivalent Edit Rx FEC Outer Advanced RSK Data Length Screen See the description of the transmit path equivalent Edit Rx FEC Outer Advanced Interleaver Depth...

Страница 125: ...whether the I and Q channel outputs are swapped Roll off This controls the expected slope gradient of the received carrier at its edges this affects the occupied bandwidth Advanced This controls the Paired Carrier PCMA carrier overlap feature On L band modems it also allows control of an LNB Edit Rx Carrier Frequency Screen See the description of the transmit path equivalent Edit Rx Carrier Invers...

Страница 126: ...ncies instead of the normal L band frequencies PSU This allows the DC supply to the LNB from the modem to be turned on or off Reference This controls whether a 10MHz reference signal is supplied to the LNB from the modem 1 for 1 This controls whether LNB services i e DC supply and 10MHz reference stay with the on line modem or switch to the standby modem when a 1 for 1 switchover occurs in a 1 for...

Страница 127: ... LO IF frequency not LO IF as with most other bands This is academic as it is handled automatically by the modem which displays the correct SHF frequency Edit Rx Carrier Advanced LNB Frequency Offset Screen Units MHz Minimum value 0 Maximum value 65535 Step size 1 Factory default 0 Description Once set all Rx IF frequencies displayed or edited include the frequency shift of the LNB or downconverte...

Страница 128: ...if a DC supply or the wrong voltage DC supply is fed to a LNB not configured to be Line powered Edit Rx Carrier Advanced LNB 10MHz Reference Screen When switched on the modem s internal 10MHz reference signal is sourced from the modem up the coaxial site cable to the LNB Edit Rx Carrier Advanced LNB 1 1 Screen This controls whether LNB services i e DC supply and 10MHz reference stay with the on li...

Страница 129: ...nable Screen This is used to switch Paired Carrier off and on Access to this menu option requires the Paired Carrier feature to have been previously enabled through the modem SAF mechanism For first time use please see the Paired Carrier deployment recommendations in the information box overleaf When switched on the modem expects the received signal to consist of two overlapped carriers utilizing ...

Страница 130: ...rrier 4 Advanced 2 PCMA 1 Enable and set to OFF 2 Before starting it is strongly recommended to prepare for a BER data transparency test using data test sets connected to each modem or using the modem internal PRBS BER test feature which can be temporarily enabled if necessary 3 Configure both modems for identical services including the same Tx and Rx frequencies Different PRBS test patterns must ...

Страница 131: ...re not data transparent then Ensure there is no spectral inversion in the RF chain If there is then this must be corrected by re inverting it for Paired Carrier operation to work Check the modem satellite location information or round trip time that has been set in each modem The range entered for the round trip time must cover the actual distance to the satellite Try widening out the round trip d...

Страница 132: ...this in the Paired Carrier control process The modem automatically selects two commonly used GPS protocols namely GGA GPS Fix Data and GLL Geographic position Latitude Longtitude and will support whichever is available It uses the GPS information to calculate the minimum and maximum delays to satellite and updates these if they need to change from their existing values Factory default Set location...

Страница 133: ... displayed in sequence Units Degs Minimum value 180 00 Maximum value 180 00 Step size 0 01 Factory default 000 00 Description The longitudinal position of the modem earth station The modem front panel Up and Down arrow keys are used for setting and respectively Units Degs Minimum value 90 00 Maximum value 90 00 Step size 0 01 Factory default 00 00 Description The latitudinal position of the modem ...

Страница 134: ...set to Delay then the following screens are displayed in sequence Units ms Minimum value 000 00 Maximum value 300 00 Step size 0 01 Factory default 000 00 Description The minimum satellite round trip delay This value directly affects the modem acquisition time Once Paired Carrier is working in order to minimize the acquisition time it is recommended to use the actual measured satellite delay value...

Страница 135: ...cy spectral inversion clocking and timeslots as well as parameters that have no Tx equivalent such as buffer size and sweep control This feature can be used to simplify the configuration for duplex links When switched off the Rx configuration retains its values and does not return to the values prior to tracking being switched on 7 3 3 2 9 Edit Rx Interface Menu See the description of the transmit...

Страница 136: ...MUX It allows a choice of auto originating the bearer if the bearer fails or originating the bearer at all times Edit Rx Interface Port 3 Port 4 Screen Units bps Minimum value 0 Maximum value 2048000 Step size 64000 Factory default 0 Description Sets the terrestrial bit rate when the Quad E1 interface port three or port four is used for multiplexed data This must be configured in multiples of 64kb...

Страница 137: ...Quantum and Evolution Series Installation and Operating Handbook 7 108 7 3 3 3 Edit Unit Menu Front Panel Edit Unit Menus ...

Страница 138: ...just a subset of the most common modem controls whereas advanced mode allows the user to access all options This is not intended to be a security measure it merely removes options from view when not necessary and can therefore simplify modem use Time This allows the time and date to be set Advanced This submenu controls alarm thresholds special modes 1 for 1 standby modem switching user interface ...

Страница 139: ...back panel shared Async ESC port is disabled and the IDR card provides separate ESC and Aux ports Aux This selects the Aux port electrical interface This interface on the modem provides the IBS SMS low rate Intelsat oversampled ESC facility As stated above the ESC and Aux functions are mutually exclusive unless an IDR card is fitted If an IDR card is fitted then the Aux port can provide 32 or 64kb...

Страница 140: ...d default gateway for the IP Traffic card HSSI Available at all data rates Quad E1 Once selected the Tx and Rx paths of the Quad E1 card can be set up using the Edit Tx Interface screen Section 7 3 3 1 8 and the Edit Rx Interface screen Section 7 3 3 2 9 respectively MultiMux A derivative of the Quad E1 interface if the mux SAF is available This allows combinations of terrestrial data to be multip...

Страница 141: ...vices are located on Routing mode IP packets are forwarded based on the contents of the modem s routing table The routing table can be populated by manually entering routes and or by turning on one or more of the supported dynamic routing protocols The dynamic routing protocols enable the modem to automatically populate the routing table based on information forwarded by other routers in the netwo...

Страница 142: ...ork as a point to multipoint remote site All modems connected to a point to multipoint bridge network that are situated at remote sites i e not on the hub should be configured to this mode Header Compression This is a bridging point to point mode where UDP and IP packet headers are compressed in order to save satellite bandwidth The bandwidth savings depend on the particular packet sizes being use...

Страница 143: ...leration mode Header Compression Only applicable if an IP traffic Interface card is fitted This mode provides bridging of non TCP packets acceleration of TCP packets and header compression Remote TCP Acceleration This mode supports point to multipoint TCP acceleration The remote modems should be set to this mode and VLAN filtering should also be enabled Hub TCP Acceleration This mode supports poin...

Страница 144: ...o TCP acceleration TCP acceleration is turned off Factory default No TCP acceleration mode Description This option is available in routing mode Edit Unit Interface Terrestrial IP Bridge Filtering Screen Options Off In this mode the bridge will forward all traffic not destined for the local subnet to the default gateway if one has been specified If the default gateway is a router then this allows t...

Страница 145: ...ridge M C Screen Options Off In this mode the Remote M C Ethernet interface will not be included in the Ethernet bridge thereby keeping IP traffic and M C traffic separate When separate the two Ethernet connectors on the base modem are no longer interchangeable Note that care should be taken in selecting this mode for a remote modem if the two cables have been mixed up then M C communications with...

Страница 146: ...can be further tuned if required as specified in the TCP IP white paper at http www paradisedata com whitepapers php Disable OSPF The OSPF dynamic routing protocol is turned off Note this will overwrite any existing configuration including any modified as specified above see the TCP IP white paper at http www paradisedata com whitepapers php for more details Factory default Disable OSPF Descriptio...

Страница 147: ...rned off Note this will overwrite any existing configuration including any modified as specified above see the TCP IP white paper at http www paradisedata com whitepapers php for more details Factory default Disable RIP Description This option is available in routing mode Edit Unit Interface Terrestrial IP QOS Scheme Options Off In this mode no prioritization is made between different IP packets e...

Страница 148: ...oS priority level 7 are sent to high priority TCP IP queue Delay sensitive packets QoS levels 6 and 5 are sent to the medium priority queue The remainder QoS levels 4 to 0 are sent to the low priority TCP IP queue For strict priority queuing all packets in high priority queue are processed before any in medium priority queue which in turn are processed before any in the low priority queue For fair...

Страница 149: ...eway for the base modem IP traffic port or the IP Traffic card if this is fitted The gateway represents the next hop destination which is normally the address of a router for packets destined for somewhere other than the local network This is used with TCP acceleration brouting and header compression An address of 0 0 0 0 means that the gateway is not set In straight bridging mode it is not normal...

Страница 150: ...Quantum and Evolution Series Installation and Operating Handbook 7 121 ...

Страница 151: ... Interface Terrestrial Satellite Port IP Netmask Factory default 255 255 255 255 Description Sets the IP traffic subnet mask for the satellite interface when the modem is in routing mode Edit Unit Interface Terrestrial Satellite Port IP Gateway Factory default 0 0 0 0 Satellite port IP address 000 000 000 000 New 000 000 000 000 Satellite port IP netmask 255 255 255 255 New 255 255 255 255 Satelli...

Страница 152: ...n In this mode each remote modem can be assigned a VLAN id which is used by the Hub to tag each packet destined for any device attached to a network off that particular remote modem The tags are added by the Hub Tx modem and removed by the remote modem The remote modem uses the tag to filter out unwanted data that has been broadcast indiscriminately to all remote modems Factory default Off Descrip...

Страница 153: ...tion to the data entering the modems from the terrestrial network VLAN ids of remote modems are automatically learnt by the Hub and all traffic destined for a particular remote modem is tagged at the Hub allowing it to filter wanted traffic The VLAN tags are removed by the modems prior to onward transmission Edit Unit Interface Terrestrial IP Web Proxy Screen Options Off In this mode all HTTP requ...

Страница 154: ...o display a typical web page It is necessary to switch the Web Proxy on only at the modem at the web browser side of the satellite link Factory default Off Description Enables acceleration of HTTP requests Edit Unit Interface Terrestrial IP DNS IP Address Factory default 0 0 0 0 Description Sets the IP address of the DNS server to be used when the Web Proxy in the modem is switched on The DNS serv...

Страница 155: ...escription Sets the protocol to be used when encapsulating IP packets and Ethernet frames into MPEG2 transport packets for transmission over satellite when using DVB S2 DVB S2 satellite frames do not directly support the transmission of IP but they do support the transmission of MPEG2 packets IP packets are of potentially varying sizes and therefore when placing these into fixed 188 byte MPEG2 pac...

Страница 156: ...ckets being transmitted over satellite This mode can be used to receive and output the IP stream as a serial stream to a Cisco serial router Edit Unit Interface IP Encapsulation PID Screen Units None Minimum value 768 Maximum value 1023 Step size 1 Factory default 970 Description When encapsulating Ethernet frames or IP packets into MPEG2 packets this specifies the PID value to be entered into the...

Страница 157: ...res terrestrial data rate to be 6 312Mbps E2 Requires terrestrial data rate to be 8 448Mbps T3 Requires terrestrial data rate to be 44 736Mbps E3 Requires terrestrial data rate to be 34 368Mbps Factory default T1 Description Sets the data rate being used in relation to the G 703 interface Edit Unit Interface Terrestrial G 703 Line Format Screen G 703 data rate T1 1 T1 2 E1 3 T2 4 E2 T3 E3 G 703 li...

Страница 158: ... G 703 as with AMI a mark logic one is sent as a pulse on the line and a space logic zero is set as the absence of a pulse on the line If there are too many contiguous spaces the G 703 receiver fails to recover the clock properly as there are no incoming pulses for a while and it causes data errors HDB3 and B8ZS for example are both methods of ensuring that no more than three or eight zeroes respe...

Страница 159: ...ompensated to cope with differing lengths of standard ABAM cable If in doubt select option 1 less than 133 feet by default no compensation Screen only available when T1 or T2 is selected Edit Unit Interface RF IF Port Impedance Screen Options 50 Ohms 75 Ohms Factory default 50 Ohms Description Sets the IF port impedance G 703 line length 133m 1 133m 2 266m 3 399m 4 533m 5 655m IF port impedance 50...

Страница 160: ... hanging off the remote modem The IP mode allows IP packets to be sent over the satellite ESC channel The ESC channel forms part of an Ethernet bridge and it therefore learns which IP packets should be sent over the ESC channel The IP packets need not be destined for the remote modem they will be passed onto the remote Ethernet network if they are addressed to a device on that network The IP packe...

Страница 161: ...cal ESC Tx ESC Rx M CRx M CTx Link Remote With both of these options the physical ESC port is disabled due to being internally linked to the M C port The mode must be set according to whether the modem is at the local or remote end of the link The effect of Link Local is to transmit whatever is received over the satellite ESC channel out onto the local modem s M C bus while at the same time transm...

Страница 162: ...ion of IP wrappered RS485 messages through the ESC channel which are then transmitted as serial messages on the remote RS485 bus Edit Unit Interface Aux Interface Screen Options RS232 RS422 RS485 IP Factory default RS232 Description Specifies the Aux electrical interface Note RS485 is not available on the IDR card The relevant physical interface on the shared Async ESC Auc port on the base modem o...

Страница 163: ... address Gateway This allows a default IP gateway to be specified This acts as the next hop when forwarding IP data not destined for the modem or local subnet IP addr This option sets the IP address for the remote control interface Subnet mask This sets the remote control port IP subnet mask Edit Unit M C Control Screen Options Local Giveaway Takeaway Factory default Giveaway Description Controls ...

Страница 164: ... paradise Description Modem password for remote admin user login login name is admin The admin user can both view and control the modem Only one admin user can be logged in at a time Edit Unit M C View Only Password Screen Factory default paradise Description Modem password for remote view only user login login name is user Multiple view only users can be logged in at the same time Remote admin pa...

Страница 165: ...reen Options RS232 RS485 IP Local Only available when IP over ESC has been selected This pushes the serial M C data across to the distant end Modem via the IP ESC for use at the remote serial ports This link is a serial extension for control of distant end equipments IP Remote This allows the serial M C data received via IP from the local Modem to be used at the distant end serial ports Uses TCP p...

Страница 166: ...y available when IP over ESC has been selected This takes advantage of the local IP address and forwards M C information directly to the remote Modem Uses TCP port 6703 This link is a serial extension for control of distant end equipments Factory default RS232 The following diagrams show how the M C interfaces may be configured using the IP Local IP Remote and IP forwarding options to facilitate d...

Страница 167: ...Quantum and Evolution Series Installation and Operating Handbook 7 138 Description Specifies the remote control serial interface mode ...

Страница 168: ...P Remote Rem M C is selected Please refer to chapter 11 for full connector pinouts Pin Signal name Direction Name RS485 Paradise IP Remote Paradise IP Remote Rem M C 1 Shield Gnd Shield Gnd Shield Gnd 3 Master B to modem RX B TX B 4 Slave B from modem TX B RX B 5 Shield Gnd Shield Gnd 6 Slave A from modem TX A RX A 9 Master A to modem RX A TX A ...

Страница 169: ...50 baud 300 baud 600 baud 1200 baud 2400 baud 4800 baud 9600 baud 19200 baud 38400 baud 57600 baud 76800 baud 115200 baud Factory default 9600 baud Description Specifies the remote control serial interface baud rate Edit Unit M C RS485 Address Screen Baud rate 9600 baud New 9600 baud RS485 address 0 to 255 1 Step 1 New 1 ...

Страница 170: ...s for the remote control interface The same IP address is used by the modem for traffic purposes when configured for IP traffic Note that entering an IP address of 0 0 0 0 causes the modem to dynamically request an IP address from a DHCP Dynamic Host Control Protocol server on the network removing the need to allocate static IP addresses to each modem The allocated IP address can be seen on the Vi...

Страница 171: ...n Sets the remote control port IP subnet mask The same IP subnet mask is used by the modem for traffic purposes when configured for IP traffic Edit Unit Clocks Screen Options None BNC RS422 Factory default None Description Controls the station clock source to be used in place of either the internal 10MHz reference or to replace only the Rx reference clock Remote control port IP netmask 255 255 000...

Страница 172: ...options under Edit Tx Clocks and Edit Rx Clocks these options become available when a station clock source is selected and are independent of whether station clock replaces the internal 10MHz clock Edit Unit Clocks Station Clock Frequency Screen Units kHz Minimum value 1 Maximum value 10000 Step size 1 Factory default 10000 Description Indicates to the modem the frequency of the station clock inpu...

Страница 173: ...ifying the menu structure when the more advanced modem features are not required Edit Unit Time Screen This option allows the current time and date of the modem to be set in the format HH MM SS DD MM YYYY The time is maintained even while the modem is switched off Edit Unit Advanced Alarms Thresholds Deferred Alarm BER Threshold Screen User level Advanced 1 Basic 2 Advanced Date time 14 41 45 06 0...

Страница 174: ...e BER threshold alarm option of the Edit Unit Advanced Alarms Actions menu Edit Unit Advanced Alarms Thresholds Rx Eb No Deferred Alarm Threshold Screen Units dB Minimum value 0 0 Maximum value 99 0 Step size 0 1 Factory default 3 0 Description Sets the Eb No threshold below which a deferred alarm will be generated Edit Unit Advanced Alarms Thresholds Buffer Slip Deferred Alarm Screen EbNo thresho...

Страница 175: ...nit Advanced Alarms Thresholds BUC PSU Alarm Screen Units A Minimum value 0 1 Maximum value 6 Step size 0 01A Factory default 0 1 Description On L band modems sets the trip threshold at which a fault is declared when the current drawn by the Tx ODU is outside the limit Both a minimum and a maximum current threshold can be set Edit Unit Advanced Alarms Thresholds AUPC Deferred Distant AlarmScreen D...

Страница 176: ...BIS interface card Edit Unit Advanced Alarms Actions Screens A number of screens are available that control the following Tx Rx AIS These control the action taken with respect to Alarm Indication Signal detection AIS can be ignored or set to raise an alarm regenerate AIS and send a backward alarm where possible BER Controls whether the BER threshold alarm is enabled BUC PSU Controls whether the co...

Страница 177: ...sing an outer FEC this will remain set to ON Edit Unit Advanced Special Modes Q323 Compatibility Screens The Q323 interface card was a modified version of the standard Q302 G703 card which could be fitted to P300 series modems The following menu screens allow Quantum and Evolution series modems to be compatible with P300 series modems fitted with Q323 interface cards No additional hardware is requ...

Страница 178: ...3 1 within the Q323 definition Options Off TS0 transparent On TS0 Bit 0 overwritten with CRC4 Factory default Off Description Controls whether TS0 is transparent or whether TSO is overwritten with CRC4 multiframe Note this is the same as SW3 2 within the Q323 definition Options Off If Switch 1 is ON then TS16 inverted On TS0 bit 0 CRC4 Q323 Switch 2 Off 1 Off 2 On TS16 Transparent Q323 Switch 3 Of...

Страница 179: ...is ON then bits 1 2 5 and 6 are inverted Factory default Off Description Controls whether all bits are inverted or bits 1 2 5 and 6 are inverted Note this is the same as SW3 4 within the Q323 definition P300 equivalence is shown below Option OFF ON SW3 1 Normal operation TS1 31 modified SW3 2 TS0 transparent TS0 Bit 1 overwritten with CRC4 SW3 3 TS16 modified TS16 transparent SW3 4 TS1 31data inve...

Страница 180: ...t 1 1 1 1 TS1 15 17 31 Invert CRC4 As above with CRC4 multi frame in TS0 bit 1 1 switch on 0 switch off When transparent TS16 options are selected and the P300 Quantum Evolution are in drop and insert mode the modems must be set to maintain timeslot identities if TS16 is part of the drop and insert group Edit Unit Advanced Special Modes Spoof Screen This option allows full connectivity of a PCM be...

Страница 181: ...pical the demodulator will go in and out of lock several times during a sun outage This option allows the terrestrial output to be muted below an associated user defined Eb No threshold see next screen to prevent multiple disturbances on the terrestrial input which can potentially be a point of contention in relation to service level agreements where a single sun outage event appears as multiple d...

Страница 182: ... condition that forces a switchover to occur Switch to maintenance Allows the modem to be removed from the redundancy group therefore preventing the unit being switched on line Switch to service Allows the modem to enter a redundancy group and be available to come on line Factory default None Description Forces a switch to the standby unit and allows a modem to be removed or added to a redundancy ...

Страница 183: ...ly losing the remaining balance of demonstration time left and returning the modem to a state whereby it is using only permanent SAF features that have been set Edit Unit Advanced SAF Code Screen Factory default None Description Encrypted code for enabling Software Activated Features Enter 0 to enable a free 10 day test shot of all features Three test shots are available and may be activated singl...

Страница 184: ...ch Note the modems position within the redundancy switch system dictates the 1 N address Please see separate redundancy switch operating manual Edit Unit Advanced Adj Ref Screen Only applicable on L band modems This allows the frequency of the internal 10MHz reference to be adjusted by using the up and down arrows This can be adjusted off line by setting the modem to CW Use a calibrated spectrum a...

Страница 185: ...he memories are non volatile and will persist between successive power ups of the modem Configuration memories can be assigned any desired name using the alphanumeric keypad Recall This allows a previously stored configuration to be selected and used in place of the current configuration Erase This option allows configuration memories to be deleted Note that one configuration memory namely LOAD_DE...

Страница 186: ...points in the transmit and receive processing chain power supply levels modem internal temperature and modem loopback status Alarms This provides access to transmit receive and unit current alarm information Note that entering 0 clears any existing latched alarm Log This provides access to the system log This includes a list of all notable events that have occurred including alarms Entries are tim...

Страница 187: ...esults using the modem s internal Pseudo Random Bit Sequence PRBS Bit Error Rate BER Tester RF This provides two types of signal a CW pure carrier signal and an alternate 1 0 signal that can be used to test modem operation IDR This provides a simple tone generator at 1 KHz 0dBm level either towards the satellite or from satellite IP Allows a one way satellite delay in milliseconds to be entered Th...

Страница 188: ...sually the remote modem The other modems are more specialized and cause a loopback at various points within the Tx Rx processing chains In general it is not a good idea to loopback IP data to itself This will cause the modem to retransmit on its terrestrial port packets that it has received and this can confuse intelligent switches which conclude that the original sending device has moved and is n...

Страница 189: ...to monitor the BER of the Rx satellite path even while the main data channel of the link is carrying normal traffic It allows a test pattern to be sent and received in the main channel or in parallel with the main channel using the ESC or Aux overhead channels It can operate independently or in conjunction with external BER equipment The test patterns are Fireberd compatible For example the intern...

Страница 190: ...s the BER test pattern to be injected in either the main traffic channel of the modem or in an overhead channel Pattern This allows a choice of bit patterns to be selected for injection into the traffic stream Test BER Tx Mode Screen Options Off Switches the BER tester off On Switches the BER tester on Factory default Off Description Controls the BER test mode Tx 1 Mode 2 Channel 3 Pattern BER mod...

Страница 191: ...annel is used which can also be used in an asynchronous mode Aux channel This selects the Aux channel as the path into which the PRBS test pattern is injected This is valid in IBS SMS and IDR modes The Aux channel must be configured before it can be used In IBS SMS the overhead assigned to the mandatory Intelsat low rate oversampled Aux channel is used by the BER tester to provide a synchronous te...

Страница 192: ...t BER Tx Results Screen The BERT shows the instantaneous test pattern synchronisation status When the Rx path is synchronised to the incoming Tx test pattern then this will display Sync OK and when synchronisation is lost it will display NO SYNC The Time field indicates the elapsed time since the test was started or restarted The Loss field is a count of the number of times that pattern synchronis...

Страница 193: ...effect The Restart test option is used to restart the BER test including clearing all of the error counts Note that pressing 2 on the key pad while on the results screen has the same effect Pressing the Back key returns the display to the previous results screen Test RF CW Screen Factory default Off Description Selecting Tx CW causes a pure carrier to be transmitted rather than the normal modulate...

Страница 194: ...t Off Description Selecting the wide spectral graph prevents the Demod from locking and is therefore implemented as a test mode At four times the symbol rate it allows viewing of a wider frequency range than the standard modem web spectral graph Note a superwide graph showing 50MHz of spectrum which does not prevent the Demod from locking Test IDR Screen Options Tx tone on Rx tone on Tx tone off R...

Страница 195: ...d Operating Handbook 7 166 Selecting IDR Rx tone on enables a 1KHz 0dBm level tone to be generated towards the terrestrial equipment in both audio channels Note that these are toggle on off functions and when disabled will be shown as hashed out ...

Страница 196: ...t panel LCD display Consequently this section explains only those features of the web interface that are different 7 4 1 Logging In and Out The philosophy behind user levels login and control of the modem is explained in Section 7 1 To connect to the web server from a web browser ensure a suitable Ethernet cable is connected into the Remote M C RJ45 socket on the rear of the modem and from the mod...

Страница 197: ...and Operating Handbook 7 168 Web User Interface Login Screen On successfully logging in the user will be presented with the following screen Web Server Welcome Screen The view only access message may be displayed depending upon login conditions ...

Страница 198: ...summary section on the left of the display is always present and provides basic modem information The Help area is used to provide help on context sensitive features it is triggered by moving the cursor over an item such as a display label which is then described within the Help box The LED mimic on the left of the screen depicts the modem front panel LED indicators A typical Edit screen that demo...

Страница 199: ...l spectrum and as an oscilloscope to view the I and Q channel Rx signal constellation Other graphs provide time based logging for up to one month of key modem parameters such as Rx Power Level Eb No etc In fact all of the information presented on the graphs can be retrieved from the modem in order to for example generate monthly Quality of Service reports regarding modem availability and operation...

Страница 200: ...his can be used for checking for adjacent interfering carriers In wide mode the demodulator is reprogrammed with different values to normal operation and consequently the wide mode of operation is only available as a special test mode since it would otherwise interfere with any traffic In super wide view which can be used without interfering with traffic the spectrum width is set to 50MHz to allow...

Страница 201: ...nstellation Graph An example signal constellation graph is shown below This can be used to check for correct modem operation including issues such as distortion and phase noise A persistence mode is also available and allows the user to see the long term effects of phase noise and interference Excessive phase noise can cause cycle skips otherwise seen as unwanted rotations within the constellation...

Страница 202: ...can be retrieved from the modem perhaps for use in quality reports using one of the remote interfaces see the Remote M C Specification for Quantum and Evolution Series Satellite Modems for more details In fact remote control commands can be used to start the automatic recording of any parameter within the modem whether or not these are supported as graphs on the web interface The web interface sup...

Страница 203: ...affic information IP packets dropped packets and errors can also be displayed for both Tx and Rx These graphs are sub divided into IP traffic M C and satellite categories If an IP traffic card is fitted then these graphs automatically relate to the IP traffic card information Examples of time based and IP traffic graphs are shown below and overleaf Eb No Graph ...

Страница 204: ...recall of these later However the web interface also allows these memories to be uploaded and downloaded to and from a PC This in turn allows configurations to be shared by different modems This offers a convenient time saving method of configuring a batch of modems by generating a configuration on one downloading it to a PC and then uploading it to other modems in turn The screens for downloading...

Страница 205: ...Quantum and Evolution Series Installation and Operating Handbook 7 176 Configuration Memory Download Screen Configuration Memory Upload Screen ...

Страница 206: ...y 4 packets sent from the high priority queue 2 are sent from the medium priority queue and 1 from the low priority queue The modem supports IEEE 802 1q VLAN tagging If Ethernet frames with VLAN tags are presented to the modem when in bridge mode then these packets will be transmitted transparently along with the VLAN tags VLAN filtering can also be used with point to multipoint topology to separa...

Страница 207: ...imes the satellite delay to be displayed The Paradise web proxy examines webpage frames as they pass through the modem and pre fetches all of the content before it is requested It is therefore typically available in cache memory at the modem local to the web browser prior to the browser actually requesting the remaining content The Bridge Filtering option forms part of the Brouting traffic mode an...

Страница 208: ...olution Series Installation and Operating Handbook 7 179 Transmit Timeslot Selection Screen 7 4 6 System Log The system log can be viewed using the View Log menu tab An example log is shown overleaf System Log Screen ...

Страница 209: ...n be viewed using the View Alarms menu tab An example screen is shown overleaf System Alarms Screen 7 4 8 On line Installation and Operation Handbook This handbook is available on line via the Help button The handbook appears in a pop up window allowing it to be kept open in the background as shown overleaf ...

Страница 210: ...The features available can be seen from the View SAF menu screen This screen also allows a test shot to be started or stopped If a 10 day test shot is active the word Demo is added to the SAF label of each additional feature started by the test shot and the text colour is changed to amber Permanent features are always shown in blue ...

Страница 211: ...odem are documented in the Remote M C Specification for Quantum and Evolution Series Satellite Modems The SNMP configuration screen found under the Edit Unit M C Advanced menu tab is shown overleaf The community names represent passwords that must be present in each SNMP read or write requests in order for the commands to be executed The source identifier fields can be used to define which source ...

Страница 212: ...rocess for both operations being the same From the screen shown overleaf it is necessary only to browse to the location of the upgrade file and open the file The latest software can be found under Downloads on the Paradise company web site at http www paradisedata com The software should be downloaded from the web site to a temporary location that can be accessed by the modem Feedback on the progr...

Страница 213: ...net Files options A software upgrade cannot be performed whilst the modem is on traffic Once the modem upgrade process starts normal modem functions are suspended The modem configuration prior to upgrade is maintained and the modem will use this configuration after the upgrade 7 4 11 2 Procedure This procedure allows a Quantum or Evolution series modem to be upgraded with the latest version of sof...

Страница 214: ...k the software zip file that was downloaded The upgrade will begin automatically Leave the modem to upgrade and restart before attempting any further action This will take around 10 minutes Note 1 Prior to starting an upgrade please ensure that none of the following files appear on either the PC desktop or within the User profile directory as a result of a previous failed upgrade UImage CF img gz ...

Страница 215: ...ere is an enhanced PRBS BER Tester available via the web user interface The enhanced BER Tester additionally Allows PRBS BER data to be generated towards the terrestrial interface allowing the modem to be used as a stand alone PRBS BER tester in place of a Fireberd or similar Supports an enhanced range of test patterns namely PRBS 2 N 1 where N 6 7 9 11 15 19 20 and 23 All 0 s All 1 s Numerous spa...

Страница 216: ...t was started or restarted The Errors field indicates the total number of error bits detected since the test started The Average BER field indicates the number of bit errors in relation to the number of bits received Latency is shown in terms of both bits and time The Sync OK LED shows the instantaneous test pattern synchronisation status When the Rx path is synchronised to the incoming Tx test pa...

Страница 217: ...oteable events that have occurred Current system alarms i e all Unit Tx and Rx faults and warnings All configuration memories Instantaneous spectrum data Instantaneous constellation data Instantaneous PRBS BER test results The information is sent in CSV format which allows the data to be instantly copied into any spreadsheet from where it can be viewed in a number of formats e g as a graph or a ta...

Страница 218: ...pient s account and open it To import the constellation data into a spreadsheet program Microsoft Excel is used in this example do the following Double click on the email attachment constellation csv and open it this should automatically start Excel if not save the attachment and then open it directly from within Excel Within Excel highlight the A and B columns Select the Chart Wizard from the too...

Страница 219: ... email feature to request technical support On the web user interface select the View tab followed by Support The support configuration screen is shown over the page Complete the contact details and type your request and send the email The email is automatically sent to Paradise Datacom s technical support team Note that the SMTP email server address has to be entered on the email configuration sc...

Страница 220: ...acom Customer Technical Support Enquiry Screen 7 4 14 IP Static Routes If you wish to work with more than one subnet the web user interface allows up to 64 static routes to be added The static route configuration screen found under the Edit Unit Network menu tab is shown over the page ...

Страница 221: ...n 1 and 3 bytes Ethernet header compression is also supported in addition and this reduces 14 bytes of Ethernet frame down to typically 1 byte Overall savings from compression from both types of compression e g for a G 729 voice stream can be as high as 60 It is widely acknowledged that ROHC is the most suitable available header compression technology for use over satellite and outperforms older t...

Страница 222: ...routes The following will be compressed when the feature is enabled The Ethernet header will be compressed on every frame IP and UDP headers will be compressed when the IP payload contains a UDP packet The IP header can only be compressed when the packet contains a UDP transport layer payload IP UDP and RTP headers when the IP payload contains both a UDP and RTP packet Header Compression Configura...

Страница 223: ...g this onto to the web browser The selection of Local or Remote mode is made through the toggle switch on the right hand top corner of each web page as shown below Local Remote Modem Web Interface Toggle Switch 7 4 17 Adaptive Signal Pre distorter This feature which is controlled from the web user interface enables 16QAM constellations to be adaptively predistorted to counter the effects of AM AM ...

Страница 224: ... Configure the modem in a closed loop setup as described above 2 Ensure the modem is in 16 QAM mode for both Tx and Rx 3 Configure the modem Tx output power to the required level in the Edit Tx Rx Common tab It is recommended this level should not exceed 10dBm as some power headroom is needed for the predistorter to apply its expanding nonlinear characteristic 4 In the Edit Tx Rx Common Predistort...

Страница 225: ...if necessary some time later Note that it is necessary to go through this learning process whenever the operating point of the HPA is changed Consequently it may be convenient to generate and save the predistortion information for all HPA operating points in advance and simply select the appropriate saved configuration whenever the HPA operating point is changed 7 The predistorted Tx constellation...

Страница 226: ...Quantum and Evolution Series Installation and Operating Handbook 7 197 Predistorter Screen showing convergence after 90 iterations ...

Страница 227: ...re is more than one clock in the system and a buffer is required to absorb the difference between the two clocks Typically data is placed into the buffer with one clock and removed with another thus causing a gradual continuous filling or emptying of the buffer causing slips on a regular basis The period between buffer slips when it is totally full or empty will be constant and proportional to the...

Страница 228: ...looped back through the DTE equipment ModemTx Data Interface FIFO DDS PLL VCXO TCXO TxData TxClock TT Internal TxClock ST Internal Tx Clock Mode 8 1 1 2 Tx Clock In When Tx Clock In is selected the DTE equipment is responsible for providing the clock The modem provides a signal on ST Send Timing in this mode and requires a clock signal to be provided on TT Terminal Timing The ST signal is provided...

Страница 229: ...the DTE that is locked to the receive satellite signal The timing is actually phase locked to the Rx data rate but at the frequency of the Tx data rate This is to allow asymmetric operation The DTE then synchronises the data going into the modem SD to this clock If the external clock is missing for any reason then the modem will substitute an internal clock Modem Tx Data Interface FIFO DDS PLL VCX...

Страница 230: ... that the signal will be subject to Doppler plesiochronous offsets ModemRx Data Interface RxBuffer DDS VCXO RxData RxClock RT PLL RxClk Data from decoder deframer Satellite Rx Clock Mode 8 1 2 2 Tx Clock In When Tx Clock In is selected the Rx clock and data are phase locked to the Tx data rate frequency but at the Rx data rate The clock and data appear on RT Receive Timing and RD Receive Data resp...

Страница 231: ...er is enabled The clock and data appear on RT Receive Timing and RD Receive Data respectively The station clock input can be configured to provide a clock just for Rx path processing or it can be used to replace the modem s internal 10MHz clock used for all internal processing The station clock frequency need not equal the modem s internal 10MHz clock frequency when it is being used to provide jus...

Страница 232: ...the incoming Rx clock Tx Clock Rx or clock looped by the equipment or cables your end o If not what is the accuracy of your Tx clock The various Tx and Rx clocking modes of the modem are described in the following sections 8 1 3 1 Clock Loop At One End The end with the clock loop requires Buffer disable Rx Clock Satellite If there is either a cabled clock loop or the equipment loops the Rx clock b...

Страница 233: ...hen both ends need the buffer active to cope with the normal Doppler effect plus the plesiochronous effect i e the difference between the clocks at each end Apply the following rules to both ends 8 1 3 3 Clock from the interface terrestrial network If the modem has a station clock which also drives the network which the Rx output feeds then select Rx Clock Station If there is no station clock then...

Страница 234: ...ia a G 703 clock extension feature that propagates a high stability reference from the hub to the remote It is necessary for a high stability E1 T1 reference signal from a GPS receiver to bes fed to only the hub modem via the G 703 balanced or unbalanced connectors thereby saving the cost of multiple GPS receivers at the remote sites The remote modem can then generate a T1 E1 signal synchronized t...

Страница 235: ...te clock and the selected terrestrial interface is not G703 the user is asked a further question Generate a G703 clock reference from satellite clock Options OFF E1 T1 Factory default OFF Description Allows a high stability reference signal to be proogated over satellite Any selection on this screen will result in the generated Rx clock for the Rx data path being requested at the Rx data rate and ...

Страница 236: ...us ESC channel 1 2000th the data rate that is available on the Aux port of the modem This results in asynchronous rates of less than 110 Baud at greater than 256kbps A TS32 multiframe sequence to allow the transmission of satellite encryption control vectors and three 8 bit carrier IDs referred to as Station Channel and Spare ID Overhead channels to convey Channel Associated Signalling CAS corresp...

Страница 237: ...e TS32 Multiframe sequence M If IBS satellite link encryption is in use very very rare then it also conveys the encryption control vectors otherwise these bits are spare X as shown One bit is also forced to a logic 1 for frame alignment resulting in a content of E1BMXXXX A standard IBS frame then is 64 x 8 ie 512 bits long TS32 Multiframe A 64 bit multiframe pattern is placed one bit at a time int...

Страница 238: ...o the IBS SMS framing via the Drop Insert multiplexer Operating over satellite without TS ID maintenance is comparable to using an external Drop Insert mux interfaced in our 2 x 64kbps example to the modem at 128kbps Once demultiplexed to 128kbps the start and end boundaries of each timeslot are lost in the continuous 128kbps data stream Without the TS ID maintenance there would be 16 different wa...

Страница 239: ...0 available data timeslots N 8 24 Finally to support one further rate four frame are used 4 Frames ie 240 available data timeslots N 16 The remaining values of N cannot have Timeslot ID Maintained by groups of 1 2 or 4 frames these are collectively know as the Odd values of N Odd values of N N 7 9 11 13 14 17 18 19 21 22 23 25 26 27 28 29 31 Most previous equipment could not provide timeslot ID ma...

Страница 240: ...sub primary order satellite circuits thin routes by selecting the timeslot carrying the CCS for Drop Insert as with other data timeslots Special action is required with CCS as the equipment at both ends of the link needs to be configured for the thin route over the satellite so it does not dynamically allocate traffic to a timeslot that is not passed over satellite link Channel Associated Signalli...

Страница 241: ... signalling data timeslots are available for the high rate ESC Similar to the fitting of the main data into the 60 timeslots available for data per IBS frame the abcd signalling information has to be fitted into the 30 available nibbles in the 15 signalling data timeslots in TS16 TS48 following the CAS MF unique word in TS16 There are certain values of N for which this will work ie where 30 N give...

Страница 242: ... 13 CAS 104 CAS 104 CAS 104 CAS 104 14 CAS 56 CAS 56 CAS 56 CAS 56 15 TS 32 CAS 8 CAS 24 CAS 24 16 TS 32 CAS 64 CAS 16 CAS 32 17 CAS 136 CAS 136 CAS 136 CAS 136 18 CAS 24 CAS 24 CAS 72 CAS 72 19 CAS 152 CAS 152 CAS 152 CAS 152 20 TS 32 CAS 16 TS 32 CAS 8 21 CAS 56 CAS 56 CAS 168 CAS 168 22 CAS 88 CAS 88 CAS 88 CAS 88 23 CAS 184 CAS 184 CAS 184 CAS 184 24 TS 32 CAS 32 CAS 24 CAS 48 25 CAS 40 CAS 40...

Страница 243: ...ional carrier that there is trouble with the link in the other direction Additional Features Paradise products Where many IDR carriers exist between sites the Audio ESC on the second and subsequent carriers are not required as the mandatory station to station ESC is met with the first carrier The modem equipped with the IDR option allows 32 or 64kbps access to the bandwidth occupied by these audio...

Страница 244: ...t end Eb No can be recorded regularly in the local end traffic log To maintain the distant Eb No a target Eb No level has to be set along with a maximum transmit power level for the local end When the target Eb No is exceeded by more than a pre defined tolerance the transmit power is adjusted to bring the distant Eb No back to the target value The power will continue to be adjusted automatically u...

Страница 245: ...etermine if it is being maintained correctly under differing atmospheric conditions Optionally use the web graphing feature to record the distant Eb No and or the AUPC delta power this may be useful in ascertaining whether AUPC manages to maintain the Eb No within the parameters you have set and also in being able to specify to the satellite operator the exact power being transmitted at a particul...

Страница 246: ... as the standby unit The modem software performs internal monitoring of operational status at a rate that prevents unnecessary switching However in the case of catastrophic failures the modem hardware performs the switch immediately without waiting for the software The logic has no memory i e a unit taken off line because of a failure will operate normally once it becomes operational again with th...

Страница 247: ...one unit back to its self will not work since the standby unit output is muted and it will therefore not detect any carrier 8 5 Software Activated Features While some modem functions are available as plug in option cards the majority of additional functions are made available through Software Activated Feature SAF support As the name implies these are modem features that can be enabled by entering...

Страница 248: ... bearer This technique can be applied to lower rate carriers also For example suppose four destinations require mesh connectivity at 384kbps 6 x 64kbps although asymmetric operation up to any rate is possible Each site has a modulator transmitting 1152kbps 3 x 384kbps and three demodulators receiving the 384kbps from the other sites The satellite bandwidth requirement is for four 1152kbps carriers...

Страница 249: ...iple of 8kHz and these non optimum values make the satellite clock an 8kHz step Where maximum error correction capability is required chose t as high as possible eg 10 and choose n as low as possible eg 60 to maximise the number of bytes than can be corrected per codeword without adding too much overhead In this extreme example it can correct one byte in six t n but the overhead is 50 overhead n k...

Страница 250: ...erating Handbook 8 24 Practical values for Reed Solomon code rate will depend on the amount of overhead the circuit can tolerate For overheads between 1 6 and 30 the table below gives practical values of n k t with the error correction at its maximum ...

Страница 251: ...ction in the processing delay associated with Reed Solomon FEC is the prime goal In such circumstances use the Custom Features feature and select shorter codewords to reduce the encoder decoder interleaver de interleaver delay For example switching from Intelsat standard values of n k t 126 112 7 to 64 56 4 provides approximately the same correction ability 7 in 126 5 5 and 4 in 64 6 25 respective...

Страница 252: ...shows how the symbol rate is built up from the data rate Relationship Between Data Rate and Symbol Rate You will see that with 1 2 rate FEC and QPSK a common combination the Symbol Rate is the same as the Data Rate assuming no Framing or Reed Solomon This is a useful combination to check on any data sheet as this will give you the Symbol Rate limits of the modem from which the Data Rate limits in ...

Страница 253: ...this is unchanged unless Minimum Overhead mode is selected in which case the overhead will vary up or down from the standard 1 15th to accommodate whatever Baud rate is set on the ESC Rate screen In all IDR modes the ESC channel is an 8kbps synchronous channel and if the ESC port is set to provide an async interface the exact maximum continuous async rate is Baud Rate 8000 x Bauds per Character 9 ...

Страница 254: ... 19200 Baud n a n a 50 10 5 4 76 2 5 2 38 1 25 1 19 38400 Baud n a n a 100 20 10 5 4 76 2 5 2 38 The formula for deriving the overhead rate is moderately complex and relies on many different parameters For other mixes of data rate and async settings the simplest way to determine the overhead is to enter the parameters into a modem and then select View Config Tx Rx This screen shows the exact overh...

Страница 255: ... this same Carrier Noise ratio at the input of the demod in terms of the Energy per Symbol Noise power density which is written as Es No Because Carrier Noise is a ratio of two powers measured in the same bandwidth the resolution bandwidth of the analyser this is the same as Es No Within the demodulator each Symbol is converted back into the Transmitted Bits For BPSK each Symbol represents only 1 ...

Страница 256: ...aming are ignored as Intelsat chose to define the mandatory modem performance in terms of Eb No specifying that this relates to the Composite Information Bit Rate ie it includes framing Baseband processing has no effect on bandwidth and is totally ignored Practical Implications of Displayed Eb No Practically this means the following For a constant Tx Power you will get the same displayed Eb No wha...

Страница 257: ...ing framing to a Closed Network link would increase the bandwidth decrease the Carrier Noise decrease the displayed Eb No as it does not compensate for framing and therefore degrade the BER However when brought back to the same Eb No you do of course recover the same BER Framing therefore does not degrade the BER for a stated Eb No but it does require more power and bandwidth to achieve the same E...

Страница 258: ...Quantum and Evolution Series Installation and Operating Handbook 8 32 Eb NoExplanatory Diagram ...

Страница 259: ...0dB 3 4 Rate 1 25dB 7 8 Rate 0 58dB 2 3 Rate 1 76dB Adjust for RS Codec n k t 126 112 7 0 51dB 219 201 9 0 37dB 225 205 10 0 40dB 5 0 5 2 5 4 5 6 5 8 3 35 3 64 3 92 4 20 4 47 6 0 6 2 6 4 6 6 6 8 4 74 5 01 5 27 5 53 5 78 7 0 7 2 7 4 7 6 7 8 6 03 6 28 6 53 6 77 7 01 8 0 8 2 8 4 8 6 8 8 7 25 7 49 7 72 7 95 8 19 9 0 9 2 9 4 9 6 9 8 8 42 8 64 8 87 9 10 9 32 10 0 10 5 11 0 11 5 12 0 12 5 13 0 13 5 14 0 ...

Страница 260: ...b 0 15 5 16 0 16 5 17 0 17 5 18 0 18 5 19 0 19 5 15 38 15 89 16 40 16 91 17 42 17 93 18 44 18 94 19 45 20 C N N error 0 04dB Example 8SPK with 2 3 Rate TCM FEC RS 219 201 9 C N N 8 4dB C N 7 72dB 8PSK so subtract 4 77dB 2 3 Rate FEC so add 1 76dB RS Code 219 201 9 so add 0 37dB Measure Look up Calculate Eb No C N 2 64dB ...

Страница 261: ... C purposes an IP address and subnet mask must be set Note that settings an IP address of 0 0 0 0 causes the modem to request an IP address from a DHCP Dynamic Host Control Porotocol server on the network Typically an external router will be required to perform complex network IP routing functions such as dynamic routing Static routes are supported allowing routing decisions to be made based on a ...

Страница 262: ...hen the IP traffic port and M C port must be on different subnets because otherwise the modem does not know which of the two ports to respond out of 8 12 2 1 Gateways The key to understanding the default gateways on the modems is being aware that there is one TCP IP stack running on a processor on the base modem and if fitted one TCP IP running on a processor on the IP Traffic card and that there ...

Страница 263: ...over satellite when routing mode is used The base modem will only ever use the M C gateway If the M C port is out of the bridge with no IP traffic card fitted then the M C gateway is applied to the IP traffic port if required then an M C gateway must be set up using a static route in this case 8 12 3 Throughput Performance Actual throughput performance depends on a number of factors including one ...

Страница 264: ... to the internet When used for IP the ESC channel runs in bridge mode with the M C port being bridged to the ESC channel Since the ESC channel acts as a bridge some bandwidth may be consumed by broadcast traffic finding its way onto it and it is best to minimize this if possible The modem allocates private IP addresses to the two ends of the ESC link no user address set up is required The ESC chan...

Страница 265: ...ut this does not prevent it being used for other purposes at the same time the AUPC messages are just multiplexed in with the other data 8 12 6 IP Interoperability Over satellite the modem uses HDLC to encapsulate the Ethernet frames or IP packets unless DVB S2 is being used in which case another form of encapsulation is used such as MPE or ULE If Cisco HDLC is selected on the modem then the recei...

Страница 266: ...the modem passes IP packets transparently as if the modem is not actually there The bridge learns which interface terrestrial or satellite devices are attached to and consequently only forwards packets over satellite when required IP packet contents are unchanged going over the bridge the source Ethernet MAC address will be changed to the modem s MAC address which is normal Because the modem does ...

Страница 267: ... as being on the local terrestrial side of the network It does not matter what subnetting is used at the remotes the devices can be on one or many subnets unless o TCP acceleration or header compression is also being used in which case all the modems need to be on a single subnet o When routing is used all the modems need to be on a single satellite subnet but you can use different subnets on the ...

Страница 268: ...the PC TCP window size regardless of the actual traffic bandwidth available over satellite Because the satellite delay is taken as evidence of link congestion TCP throttles back the amount of data it sends Acceleration allows approx 90 utilisation of whatever the available traffic bandwidth is over satellite Acceleration can be used in point to point and point to multipoint bridging modes as well ...

Страница 269: ...ent pipe for data so the data that is finally received at the destination on the terrestrial network at the far end of the link is identical to that which has been supplied to the local modem for transmission over satellite This is not necessarily true for IP data Being packet based IP naturally supports multiplexing of different data streams These streams often have different inherent priority le...

Страница 270: ...er priority The priority setting also controls latency and jitter In the situation where the transmit modem has several packets in its input buffer waiting for transmission over satellite then the packets will be sent based on their priority with the highest priority being sent first Packets are buffered up to a limit after which packets may be dropped The priority value ranges from zero to seven ...

Страница 271: ...y be classified as part of the data stream if both the address and the port number match A maximum of 16 data streams are supported each of which has its own CIR BIR and priority level settings The following example shows a traffic shaping scheme based on matching on source address and source port number Note the Enable shaping checkbox which controls whether traffic shaping is enabled or not As c...

Страница 272: ...higher priority When the BIR of Class 1 is reached the remaining spare bandwidth will be allocated to Class 2 8 12 9 4 2Diffserv DSCP Class It is possible to classify data streams based on the Differentiated Services Code Point DSCP value in the IP packet header The DSCP class bits are the top three bits of the DS field in an IP header the other three bits of the field indicate drop precedence whi...

Страница 273: ...t have this field set to the appropriate value in order for the modem to recognize the different data streams Note that the modem includes support for IEEE 802 1p priority tagging as an alternative QoS scheme to traffic shaping in its own right In this case the packets must already be tagged at the point of entry to the modem It is a layer 2 feature that uses 8 classes of data 3 bit field to prior...

Страница 274: ...trict priority queuing all packets in high priority queue are processed before any in medium priority queue which in turn are processed before any in the low priority queue For Fair weighting queuing for every 4 packets sent from high priority queue 2 are sent from medium queue and 1 from low priority queue The following example shows a traffic shaping scheme based on priority tagging 8 12 9 4 4MP...

Страница 275: ...HTTP Web Acceleration HTTP web acceleration speeds up the display of web pages Web pages are made up of multiple objects Each in line image is a separate object and web browsers typically fetch each in line object sequentially one at a time once the skeleton web page has been received Some browsers will start a second TCP connection so two objects can be fetched in parallel A typical web page with...

Страница 276: ...n dynamic routing is on traffic will be automatically routed across satellite correctly by automatic exchange of routing information with other routers The routing information exchange uses satellite bandwidth and is therefore an overhead The amount of bandwidth required depends on the size of the routing tables that are exchanged and the frequency with which they are exchanged Dynamic routing is ...

Страница 277: ... bytes best case This represents more than a 60 bandwidth reduction There is support for per route configuration control where you can specify up to 32 source or destination IP addresses only packets with one of these addresses get directed through the compressor Header compression runs up to 29000 packets per second one way 22000 packets per second two way on the IP Traffic card 8 12 13 VLAN Oper...

Страница 278: ...cific VLAN stream Select TCP acceleration as normal at the hub and remote modems Set a VLAN id at the remote modem that represents the data stream to be pulled off At the hub set the VLAN id of the VLAN that you want to accelerate note this is the full 16 bit VLAN field value from the IEEE 802 1q header not just the 12 bit VLAN id portion The IP traffic addresses of the modems must be on the same ...

Страница 279: ...r Es No For example for an available Es No of 6 5dB it is better to use short block 8PSK 3 5 with pilots on spectral efficiency 1 69bits s Hz than to use the most suitable short block modcod with pilots off i e QPSK 5 6 spectral efficiency 1 6bits s Hz Note that ACM can be used with AUPC at the same time providing automatic uplink power control helps maintain the remote Eb No at the target level M...

Страница 280: ...und with an SCPC return or an SCPC outbound with a DVB S2 return DVB S2 outbound and return SCPC outbound and return SmartLink mode where SCPC features are combined with DVB S2 space segment savings All traditional SCPC features such as IBS IDR Drop and Insert ESC AUPC etc are supported DVB S2 does not directly support any of these SCPC features and therefore SmartLink was developed to allow exist...

Страница 281: ...rk as this does not add any extra framing to that provided by DVB S2 DVB S2 is provided as a Tx Rx service option whereas SmartLink is provided as an SCPC FEC option once an SCPC service has been selected Currently the only terrestrial interface that is interoperable with other vendors equipment when running a pure DVB S2 service is the IP interface IP is supported on the base modem when in SCPC a...

Страница 282: ...raming overhead DVB S2 with IP is supported directly from the Tx and Rx service menu options Once DVB S2 or SmartLink has been enabled various other configuration menu options become available including choice of modulation and FEC rate as well as DVB S2 FEC frame size choice and DVB S2 pilots DVB S2 pilots introduce a regular burst of unmodulated carrier that helps the demodulator lock onto the s...

Страница 283: ...l This is depicted in the diagrams below Frequency Re use by Overlaying Carriers The Paired Carrier processing in the modem to cancel the unwanted signal in the composite received signal to be left with only the desired signal is shown in the diagram overleaf The signal cancellation algorithm estimates and compensates for gain frequency phase and delay in matching the unwanted component of the com...

Страница 284: ...have similar antenna sizes and use similar power levels at each end of the link whereas asymmetric links wil typically use a larger antenna at one end of the link and a smaller antenna at the other end with dissimilar power levels In the asymmetric case the system can be designed to require signal cancellation at only one end of the link with the unwanted signal at the other end being reduced to a...

Страница 285: ... used if you require to cancel multiple carriers appearing within the cancellation bandwidth Q Can Paired Carrier handle asymmetric carriers that is carriers with different data rates and or different symbol rates on transmit and receive A Yes the Paired Carrier can handle asymmetric carriers The transmit and receive parameters are totally independent Q My transmit and receive carrier levels off s...

Страница 286: ...on process Also of course power is needed for the second carrier Q What prerequisites exist for using Paired Carrier A It requires a full duplex link where you must be able to receive your own uplink signal off satellite It works only with bent pipe transponders where there is no demodulation remodulation or cross strapping between transponders The transponder must do no more than filter frequency...

Страница 287: ...d Motorola The modems with Sat ABIS sit between the BTS and BSC Sat ABIS supports 1 1 redundancy with no external hardware Four Ethernet ports for future growth In relation to compression Sat ABIS Removes silence idle speech frames Removes idle data frames channels not assigned to calls Performs LAPD signalling optimization including compression of repetitive data patterns such as idle flags betwe...

Страница 288: ... Operating Handbook 8 62 Sat ABIS Web Configuration Screen Diagnostics in the form of the achieved compression ratio percentage of the available satellite bandwidth being used and the dropped TRAU count are available for Sat ABIS as shown overleaf ...

Страница 289: ... the hub The hub clock is used as a clock generator for HDLC framed data and the remote modem derives its clock from the satellite signal and generates a 2 048 MHz bearer to the BTS The bearer is looped by the BTS back into the remote for synchronised communications back to the hub As well as saving up to 50 bandwidth Sat ABIS as an embedded solution reduces box count Sat ABIS is compatible with F...

Страница 290: ... the key advantages of FastLink is its flexibility As mentioned FECs offer a trade off between BER performance and latency While the default settings for FastLink achieve this balance two other modes are also available The first mode optimises performance for particularly low latency at the cost of a slight increase in Eb No required to achieve a specific BER The second mode optimises BER performa...

Страница 291: ...nagement Protocol SNMP messages This interface can be used in several ways Firstly a generic user entry application such as Telnet can be used to automatically send or manually enter PUP commands Secondly PUP messages can be encapsulated directly into TCP packets using the message format defined in the document Remote M C Specification for Quantum and Evolution Series Satellite Modems These must b...

Страница 292: ... 09 20 2A 54 03 3 Set the transmit power to a new value 20 The response has a value of s e t T I F T x I F P w r 2 0 02 19 01 09 73 65 74 20 54 49 46 54 78 49 46 50 77 72 20 2D 32 30 2A C6 03 02 08 01 09 20 2A 54 03 4 get the transmit power to prove that the change has been accepted The response indicates a value of 20 g e t T I F T x I F P w r 02 15 01 09 67 65 74 20 54 49 46 54 78 49 46 50 77 72...

Страница 293: ...he modem A P3051 Link PCB may be required to connect to other interface cards 1 1 Operation The standard modem interfaces do not require hardware changes for 1 1 redundancy operation However the G 703 option interface needs to be configured by the front panel for 1 1 mode Normal or 1 1 The 1 1 G 703 mode control selects what happens when power is removed If the power is lost in Normal mode the G 7...

Страница 294: ...estrial then the following interface description applies Min Req Signal Description LVDS Name Circuit Number 25 pin Electrical Levels A B DATA CIRCUIT TOWARDS MODEM TX 9 Clock In TT 113 24 11 LVDS 9 Data In SD 103 2 14 LVDS Sig Valid In RS 105 4 19 LVDS Sig Accpt d Out CS 106 5 13 LVDS Int Tx Clock Out ST 114 15 12 LVDS DATA CIRCUIT FROM MODEM RX 9 Clock Out RT 115 17 9 LVDS 9 Data Out RD 104 3 16...

Страница 295: ... Marginal frequently then this is not a modem fault but an indication that you have a clocking problem external to the modem ie changing clock data phase a problem which would otherwise have caused untraceable data errors With the Tx Clocking Set to Tx Clock In the Data In signal is checked against the Clock In signal With the Tx Clocking Set to Internal or Rx the Data In signal is checked against...

Страница 296: ...e is a clocking problem external to the modem i e changing clock data phase a problem which would otherwise have caused untraceable data errors With the Tx Clocking Set to Tx Clock In the Data In signal is checked against the Clock In signal With the Tx Clocking Set to Internal or Rx the Data In signal is checked against the Int Tx Clk Out signal All signals are balanced differentially driven and ...

Страница 297: ...uality twisted pair screened cable but this rate is reduced as the connecting cables extend beyond 10m As an estimate assume the maximum rate halves as the distance doubles ie 5Mbps to 20m 2 5Mbps to 40m etc The input clock data phase is selected automatically reporting a Data Marginal warning whenever it has to switch phase If the modem reports Data Marginal frequently then this is not a modem fa...

Страница 298: ...al Ground SG 102 7 Ground B 9 Shield Protective ground FG 101 1 Screen A Device DTE Ready In DTR 108 20 RS232 H Device DCE Ready Out DSR 107 6 RS232 E Local Loop In LL 141 18 RS23 2 Remote Loop In RL 140 21 RS23 2 The maximum data rate is 10Mbps over good quality twisted pair screened cable but this rate is reduced as the connecting cables extend beyond 10m As an estimate assume the maximum rate h...

Страница 299: ...ies The interface type can be selected as Synchronous or Asynchronous Min Req Signal Description RS232 Name Circuit Number 25 pin Electrical Levels A B DATA CIRCUIT TOWARDS MODEM TX 9 Clock In DA 113 24 RS232 9 Data In BA 103 2 RS232 Sig Valid In CA 105 4 RS232 Sig Accpt d Out CB 106 5 RS232 Int Tx Clock Out DB 114 15 RS232 DATA CIRCUIT FROM MODEM RX 9 Clock Out DD 115 17 RS232 9 Data Out BB 104 3...

Страница 300: ...x carrier to be switched on and off by the Sig Valid In line CA by selecting Change Tx Modulator Carrier RTS Controlled For Asynchronous RS232 interface the Tx Rx AIS detectors and the data marginal detectors are automatically disabled to prevent any unwanted alarms The internal Tx clock output is also automatically used to provide a reference clock to the incoming Async data For best operation Pa...

Страница 301: ...r 100 110 120Ω then the following pinout applies Min Req Signal Description 25 pin Electrical Levels A B DATA CIRCUIT TOWARDS MODEM TX 9 Data In 2 14 G 703 DATA CIRCUIT FROM MODEM RX 9 Data Out 3 16 G 703 COMMON LINES Signal Ground 7 Ground 9 Shield Protective ground 1 Screen Line Code Line Length For both T1 and E1 G 703 cards the line code is set from the front panel after the electrical interfa...

Страница 302: ... supplied with the modem If IP is selected under Edit Unit Interface Terrestrial then the following interface description applies The modem supports two RJ45 Ethernet ports for IP and remote control ports The Ethernet automatically supports 10 100 data rates and uses CAT 5 Ethernet cable either straight or crossover depending upon whether the modem is connected directly to a host or hub switch The...

Страница 303: ...e source of the single clock from the modem as Satellite Internal or Station Clock Tx Clk In does not exist in X 21 and cannot be used The Tx clock should be set to Rx as the Tx data is clocked by the same clock as the Rx data The maximum data rate is 10Mbps over good quality twisted pair screened cable but this rate is reduced as the connecting cables extend beyond 10m As an estimate assume the m...

Страница 304: ... to take the single clock from the terrestrial by selecting Tx Clock In The Rx Clocks menu should also be set to return Rx data in time with the single Tx Clock by also selecting Tx Clock In No other combinations will work The maximum data rate is 10Mbps over good quality twisted pair screened cable but this rate is reduced as the connecting cables extend beyond 10m As an estimate assume the maxim...

Страница 305: ...n to 4800bps The low offset voltage Type 1 generator is not supported but as specified for use with older equipment in 1985 should not be an issue today The Type 3 is for data rates above 10Mbit s this physical interface is not currently supported Connectors pin assignments and communication protocols are not standardised in this MIL STD document FED STD 1030A may be considered equivalent to EIA R...

Страница 306: ...t 23 G I F Rx Data A output 11 G I F Tx Data B input 24 G I F Tx Data A input 12 Test Mode must be open circuit 25 Ground 13 Ground P3713 D type connector socket Pin Eurocom D1 Pin Eurocom D1 1 Ground 14 2 15 C G I F Tx Data A input 3 C G I F Tx Data B input 16 C G I F Rx Data A output 4 C G I F Rx Data B output 17 5 18 D I F Tx Clock A output modem 6 D I F Tx Clock B output modem 19 7 Ground 20 D...

Страница 307: ...5 CTS A 18 Local Loopback 6 DSR A 19 RTS B 7 Ground 20 DTR B 8 Rx Ready A 21 Remote loopback 9 Rx Clock B 22 DSR B 10 Rx Ready B 23 DTR B 11 Tx Clock B 24 Tx Clock 12 ETC B 25 Not used 13 CTS B P3713 D type connector socket This supports the P3702 G 703 card Pin G703 Balanced Pin G703 Balanced 1 Screen 14 Tx Data B 2 Tx Data A 15 3 Rx Data A 16 Rx Data B 4 17 5 18 6 19 7 Ground 20 8 21 9 22 10 23 ...

Страница 308: ...F Rx Clock A output Rx Ready B 11 3 D I F Rx Data B output Tx Clock B 12 2 Ground ETC B 13 1 Screen CTS B 14 25 Ground Tx Data B Tx Data B 15 24 G I F Tx Data A input ETC A 16 23 G I F Rx Data A output Rx Data B Rx Data B 17 22 Ground Rx clock A 18 21 D I F Tx Clock A output modem Local Loopback 19 20 G I F low rate enable RTS B 20 19 D I F Tx Clock A input DTR B 21 18 D I F Tx Data A input Remote...

Страница 309: ...r port Min Req Signal Description RJ45 Electrical Levels A B DATA CIRCUIT TOWARDS MODEM TX 9 Data In 1 2 G 703 DATA CIRCUIT FROM MODEM RX 9 Data Out 4 5 G 703 Line code is fixed as HDB3 for all ports The master clock source for all ports is the lowest active port number that is configured and connected For example if port one is being used then this provides the clock source for all other ports Th...

Страница 310: ... terrestrial multiplexed data to be aggregated onto a single satellite carrier Port 1 Port 2 Port 3 Port 4 E1 E1 E1 IP data E1 E1 E1 EIA530 data E1 E1 EIA530 data IP data Line code is fixed as HDB3 for all E1 ports Other electrical interface rates need to be a multiple of 64kbps and master timing is derived from the lowest active port number that is configured and connected Note that Quad E1 ports...

Страница 311: ...r Quantum and Evolution Series Satellite Modems Connector type 9 pin D female Pin Signal name Direction Name RS485 Name RS232 Paradise 1 Shield Gnd Shield Gnd Shield Gnd 2 3 Master B to modem RX B 4 Slave B from modem TX B 5 Shield Gnd Shield Gnd Shield Gnd 6 Slave A from modem TX A Tx data 7 8 9 Master A to modem RX A Rx data Pins 1 and 5 are both grounded on the modem ie Shield and Ground are in...

Страница 312: ...lows Unit 1 Unit 2 Pin 1 Screen Pin 1 circuit ground Pin 2 Pin 3 On Line signal 2 1 Pin 3 Pin 2 On Line signal 1 2 Pin 6 Pin 7 Fail signal 2 1 Pin 7 Pin 6 Fail signal 1 2 Keep this lead as short as practical and ensure it is screened to prevent spurious changeovers by noise induced in these high impedance signal leads Refer to the earlier section on 1 FOR 1 switching for details of 1 FOR 1 operati...

Страница 313: ...Transmit inhibit 8 Buffered direct AGC voltage This may be used as an antenna pointing signal when the demod is unlocked It responds to composite power in approximately a 2MHz bandwidth around the nominal Rx carrier frequency 14 Not connected 15 Ground To externally inhibit the Transmit carrier either apply a TTL CMOS low signal to pin 7 or short pin 7 to ground for example with an external relay ...

Страница 314: ...Output from satellite 1 1 Ground RS232 Serial port currently unused 12 Serial Input RS232 port 5 Serial Output RS232 port 13 Ground Analog Rx constellation monitor Rx signal quality 14 Rx I channel eye 7 Rx Q channel eye 15 Rx symbol clock 13 Ground RS422 Differential Station Clock Input 4 Station Clock a 11 Station Clock b 13 Ground RX Constellation Monitor Port To display the receive constellati...

Страница 315: ... Closed Net Plus ESC mode the ESC channel provides the variable rate async ESC facility the Aux channel is not used In IBS SMS modes the ESC channel provides the High Rate Async ESC facility 2400 Baud at 64kbps and the Aux channel either the Intelsat low rate ESC facility 50 Baud at 64kbps or a variable rate synchronous Aux circuit However to use the Aux channel in a synchronous mode the IDR optio...

Страница 316: ...a in 14 U U Tx ESC Data in B n c 32 U Rx ESC Clock out A Rx ESC Clock out 33 U Rx ESC Clock out B n c 15 U U Rx ESC Data out A Rx ESC Data out 16 U U Rx ESC Data out B n c 46 U Tx ESC Octet out A Tx ESC Octet out 47 U Tx ESC Octet out B n c 48 U Rx ESC Octet out A Rx ESC Octet out 49 U Rx ESC Octet out B n c 17 U U Ground Ground U indicates lines are optional In Closed Net Plus ESC mode the variab...

Страница 317: ...he aux port is not used In IBS modes the Aux port can be set to both Intelsat using TS32 bit 1 and Sync modes selectable to use any of TS16 TS32 bits 1 5 8 TS48 In both modes a clock is provided and the port can be used synchronously with the clock or asynchronously allowing the async data to be oversampled by the higher rate clock In this oversampled mode as specified by Intelsat the Baud rate is...

Страница 318: ...dBm set independently from the front panel Audio is encoded as 32kbps ADPCM or 16kbps ADPCM in some custom modes The Audio ports may be used in two applications In IBS modes if set to emulate a P1348 P1448 Audio Data mux card the ESC ports provide the equivalent of the two audio ports on the P1348 P1448 ie can transmit 64kbps 2 audio channels or 128kbps 2 audio channels plus 64 kbps data from main...

Страница 319: ...hen any backward alarm is received this does fall back to the Fail state when power is removed Backward alarm inputs float to the Good state high 5V and indicate Fail when connected to 0V The Rx summary fault is an open collector output 0V Fail open collector OK From the front panel the backward alarm inputs BA x can be set as follows E Ext A Auto Rx fail O OK Menu Opt BA 1 BA 2 BA 3 BA 4 Mode 1 E...

Страница 320: ...s the normal single IBS backward alarm status mirrored by the unit deferred alarm For multidestinational IBS carriers it is possible to operate the modem in IBS mode but use 4 separate backward alarms as per IDR From the front panel select Service as Other based on IBS and follow the screen prompts ...

Страница 321: ...y Actions To Terrestrial TA AIS in selected timeslot if the Insert MUX is active or AIS over all data if not in Insert mode If Insert mode is active and the user control thin route spoofing is on then AIS is forced over the whole PCM bearer not just the selected timeslots to spoof full bearer connectivity when passed over a Thin Route satellite circuit TB Frame Backward alarm TC AIS forced in the ...

Страница 322: ...ake the modem re seek frame synchronisation when CRC synchronisation is lost check the modem is not set to expect a CRC and is forcing frame re acquisition when CRC is lost but there is no CRC on the PCM signal T TB SA SC Tx fault Dropped data is all ones AIS indicating upstream equipment fault The specific timeslots dropped by the Drop MUX contain all ones AIS This is different to the Tx Fault Da...

Страница 323: ...UC with no input attenuator D Tx warning BUC PSU outside limits The current drawn by the BUC has exceeded the permissible upper lower limits CM Tx warning Tx Channel DPLL Unlocked Consult technical support if this alarm cannot be cleared CM Tx warning Tx exceeds 4 5Mbps limit in TPC 5 16 Configuration error data rate for FEC scheme exceeded Tx warning Tx exceeds 6 5Mbps limit in TPC 21 44 or 2 3 C...

Страница 324: ...d the IBS CAS multiframe sync on the receive data although it has found frame sync and TS32 multiframe sync CAS Multiframe sync is used to convey either 1 Channel Associated Signalling CAS in G 732 Drop Insert modes using CAS 2 To maintain the identity of a group of timeslots in some cases 3 To maintain Robbed Bit Signalling RBS in T1 D4 or T1 ESC Drop Insert modes Check as follows for each use 1 ...

Страница 325: ...interface range Configuration error data rate for terrestrial interface exceeded Rx warning The distant Eb No has fallen below the user threshold D Rx warning The receive Eb No is worse than the user threshold set for the deferred alarm D Rx warning Rx symbol rate outside range The modems current configuration exceeds the permissible symbol rate check the configuration Rx warning Selected Rx outpu...

Страница 326: ...m satellite indicating equipment downstream of Tx has failed This indicates which of the four backward alarms are active at the Rx input This indicates that equipment downstream of the transmit path ie the distant end Rx path or further downstream has failed and is returning an alarm In Multidestinational circuits this may not correspond to the Tx path of this modem The fault may be due to any rec...

Страница 327: ...d The clock used when the selected Rx clock fails has also failed Contact technical support for advice U TA TC RF Unit fault Communications with the BUC have failed Check connections Unable to communicate with the BUC check BUC type services are correctly configured U TF Unit fault BUC PLL failure The PLL in the BUC is reporting out of lock Check reference clock U TF Unit fault BUC over temperatur...

Страница 328: ... the maximum offset allowed Check AUPC settings 12 7 Start up problems Fault Text Notes Relays To Ter To Sat Other Unit fails to boot due to an invalid configuration but passes the initial built in test proceeding to the initialising screen Remove the mains input lead wait for a short period of time and then re power the unit As soon as the initialising screen is reached enter 1 3 7 and 9 using th...

Страница 329: ...ps 2Mbps Extends base operation to 5Mbps Extends 5Mbps to 10Mbps Extends 10Mbps to 20 or 25Mbps Extends 25Mbps to 55Mbps Extensions are cumulative User Traffic Data Rate Resolution 1bps Note The combination of FEC Rate Modulation scheme and Satellite Overhead limits the Traffic Data Rate Range in all modes User Data Rate Range Closed Network 4 8kbps to 10Mbps PD10 20Mbps PD20 25Mbps PD25 or 55Mbps...

Страница 330: ...ed to framing per IESS 309 up to 10 Mbps Scrambling IDR Option and Closed Network With RS Coding synchronised to RS overhead Without RS Coding and Non TPC FEC V 35 self synchronising No RS Coding with TPC FEC 212 1 up to 10 Mbps Scrambling Closed Network Plus ESC 32kbps or above synchronised to ESC overhead Less than 32kbps as per closed network V 35 Scrambler has CCITT Intelsat Fairchild and Link...

Страница 331: ... maximum Amplitude Accuracy 0 2dB maximum Carrier Suppression 30dBc minimum Output Phase Noise As IESS 308 nominally 3dB better IF Output Frequency Stability 1ppm yr L band Output Frequency Stability 7 5E 8 yr with high stability reference option IF Harmonics Better than 55dBc 4kHz in band L band Harmonics Better than 55dBc 4kHz in band no worse than 45dBc out of band to 5GHz IF Spurious Better th...

Страница 332: ...Frequency Offset 100Hz resolution Wanted signal level strength indicator centred on the middle of the Rx Input range AGC Output Buffered direct AGC output for antenna tracking etc 13 4 Clocking and Buffering Specifications Parameter Modem Clock Integrity Frequency Locked Loops give phase hit immune operation even with poor clock sources such as routers etc Tx Clocking Internal Standard options acc...

Страница 333: ...eter Modem Closed Network Format Unframed no overhead IBS SMS Option Format Intelsat IBS to IESS 309 and IESS 310 up to 10 Mbps and Eutelsat SMS to EESS501 IDR Option Format Intelsat IDR to IESS 308 and IESS 310 up to 10 Mbps Closed Network plus ESC Format Provides variable rate asynchronous ESC optional synchronous scrambler above 32kbps to replace error multiplying V 35 scrambler optional backwa...

Страница 334: ...ay on low data rate circuits Up to 10Mbps 13 7 Drop and Insert Option Specifications Parameter Modem Bearer Types T1 D4 T1 ESF and E1 G 732 Timeslot Selection Independent selection of arbitrary timeslots for both drop and insert Bearer Generation The terrestrial bearer may be looped through the Drop Mux then Insert Mux or terminated after the Drop Mux and a new blank bearer generated by the insert...

Страница 335: ...nal working Timeslot ID Maintenance The IBS SMS or Closed Net Plus ESC is extended to maintain the identity of individual timeslots for all values of N from 1 to 31 Signalling Both Channel Associated Signalling CAS and Robbed Bit Signalling RBS are fully supported For G 732 Drop Insert CAS signalling is extracted from terrestrial TS16 and carried over the satellite in IBS SMS TS16 and TS48 before ...

Страница 336: ...om 0 2 to 5 1 of the terrestrial rate e g up to 2400 baud at 64kbps Includes modes compatible with the P300 and P400 Series P230 P1300 P1361 using 20 32nd of the overhead IBS Aux Data Channel With IBS option and Advanced Aux option Intelsat low rate async ESC definition carried in bit 1 of TS32 providing a synchronous channel at 1 480th of the data rate allowing up to one quarter of this rate for ...

Страница 337: ...ck and data lines IDR Provides 32 or 64kbps access in place of one or both audio ESC channels IBS Intelsat low rate ESC mode as previously but now via Aux port on IDR card not shared ESC Aux port of base unit IDR option also adds sync IBS mode configurable to use between 1 32nd and 21 32nd of the IBS overhead providing a full sync Aux port at between 0 2 and 4 3 of the main data rate Aux port prov...

Страница 338: ...chronous ESC channel on IBS SMS IDR and Closed Network plus ESC carriers ESC from 300 baud i e overheads down to less than 1 User Parameters Target Eb No positive power offset negative power offset 13 13 Data Rate Specifications Maximum symbol rates are as follows PD10 IF 5 Msps PD10 L band 5 Msps PD20 IF 10 Msps PD20 L band 10 Msps PD25 IF 12 5Msps PD25 L band 12 5Msps PD55 IF 40Msps PD55 L band ...

Страница 339: ...7 5 15 5 BPSK TCP 1 2 4 8 10 BPSK TCP 3 4 7 2 15 BPSK TCP 7 8 8 4 17 5 O QPSK VIT 1 2 9 6 20 O QPSK VIT 3 4 14 4 30 O QPSK VIT 7 8 16 8 35 O QPSK VIT RS 1 2 8 6 17 7 O QPSK VIT RS 3 4 12 8 26 6 O QPSK VIT RS 7 8 15 31 1 O QPSK TPC 3 4 14 4 30 O QPSK TPC 7 8 16 8 35 O QPSK TPC 0 93 17 9 37 2 8PSK TCM 2 3 19 2 40 8PSK TCM RS 2 3 17 7 36 7 8PSK TPC 3 4 21 6 45 8PSK TPC 7 8 25 2 52 5 8PSK TPC 0 93 26 ...

Страница 340: ...ed software may be downloaded into FLASH memory via Ethernet port with modem remaining in equipment rack Configuration Memories 20 configurations can be stored and recalled from the front panel or remote M C Memories can be labeled with text string to aid identification User Interface Clear and intuitive operator interface with plain English dialogue other languages supported Graphic display backl...

Страница 341: ...Standard unaccelerated Throughput depends on traffic format formats such as UDP that do not require acknowledgements run at up to the maximum data rate of the modem unaccelerated TCP which requires acknowledgements will typically run at up to 128kbps per connection 80 Connections Sec 13 17 BUC LNB facilities Parameter Modem BUC Power Supply Options Mains input 48V DC 2A output 100W to BUC via Tx I...

Страница 342: ...Quantum and Evolution Series Installation and Operating Handbook 13 14 13 18 Performance Graphs ...

Страница 343: ...Quantum and Evolution Series Installation and Operating Handbook 13 15 Modem Error Probability versus Eb No Viterbi Decoding ...

Страница 344: ...Quantum and Evolution Series Installation and Operating Handbook 13 16 Modem Error Probability versus Eb No 8PSK TCM with without Reed Solomon ...

Страница 345: ...Quantum and Evolution Series Installation and Operating Handbook 13 17 Modem Error Probability versus Eb No 2nd Generation Turbo Codec Note rate 7 8 is de facto ...

Страница 346: ...Quantum and Evolution Series Installation and Operating Handbook 13 18 Modem Error Probability versus Eb No for low latency Paradise TPC rate 7 8 ...

Страница 347: ...bability versus Eb No 8PSK Turbo 1 00E 09 1 00E 08 1 00E 07 1 00E 06 1 00E 05 1 00E 04 1 00E 03 1 00E 02 0 1 2 3 4 5 6 7 8 9 10 EbNo BER Rate 7 8 Spec Limit Rate 3 4 Spec Limit Test Conditions FEC Turbo Rate 2048kHz 8PSK Tx 70 000 MHz Rx 70 000 MHz Scrambling Normal Turbo Input Level 45 ...

Страница 348: ...Quantum and Evolution Series Installation and Operating Handbook 13 20 Modem Error Probability versus Eb No 16QAM Turbo ...

Страница 349: ... 00E 06 1 00E 05 1 00E 04 1 00E 03 0 1 2 3 4 5 6 7 8 9 10 11 12 EbNo BER Paradise 16QAM Typ Paradise 16QAM Spec Paradise 8PSK Typ Paradise 8PSK Spec Paradise QPSK Typ Paradise QPSK Spec Comtech 8PSK Typ Comtech 8PSK Spec Comtech QPSK Typ Comtech QPSK Spec Modem Error Probability versus Eb No Turbo Rate 0 93 versus Comtech Turbo Rate 0 95 ...

Страница 350: ...Quantum and Evolution Series Installation and Operating Handbook 13 22 Modem Error Probability versus Eb No Sequential Decoding at 64kbps ...

Страница 351: ...Quantum and Evolution Series Installation and Operating Handbook 13 23 Modem Error Probability versus Eb No Sequential Decoding at 2048kbps ...

Страница 352: ...tion LCD Liquid Crystal Display IBS Intelsat Business Service IESS Intelsat Earth Station Standard IDR Intermediate Data Rate M C Monitor and Control MIB SNMP Management Information Base MSC Mobile Switching Centre Mux Multiplexer OQPSK Offset Quaternary Phase Shift Keying PCB Printed Circuit Board PUP Paradise Universal Protocol PLL Phase Locked Loop PRBS Pseudo Random Bit Sequence PSTN Packet Sw...

Страница 353: ...and BUC using Web User Interface EVO_AN_002 G703 Clock Extension EVO_AN_003 Software Utility Program EVO_AN_004 Software Upgrade Instructions EVO_AN_005 Kernel Recovery Instructions EVO_AN_006 Recovery Instructions EVO_AN_007 Compact Flash Programming Procedure EVO_AN_008 Software Upgrade Via Telnet Instructions EVO_AN_009 Quick Start Guide Repair Return Procedure Please refer to the equipment war...

Страница 354: ...or an RMA number 5 Generate the required import paperwork explicitly following the import export procedures stated when the RMA number was given 6 Outside of the UK fax the paperwork to us directly and return the goods to Paradise Datacom Within the UK fax the paperwork and return the goods to Paradise UK ...

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