Page 1 Fax 814-466-3341 http://www.paradisedata.com IMPORTANT NOTE: THE INFORMATION AND SPECIFICATIONS CONTAINED IN THIS DOCUMENT SUPERSEDE ALL PREVIOUSLY PUBLISHED INFORMATION CONCERNING THIS PRODUCT PARADISE DATACOM maintains a continuing programme of product improvement and therefore reserves the right to change specifications without notice...
Page 2: Table Of Contents
Table of Contents 1 EMC (ELECTROMAGNETIC COMPATIBILITY) AND SAFETY NOTICES ..7 EMC ..............7 SAFETY .
Page 3 CHANGE, TX MENU ............52 6.6.1 Change, Tx/Rx, SERVICE Menu .
Page 4 6.7.16 Change, Rx, ESC/AUX/BA Menu ........93 6.7.17 Change, Rx, RX=TX Menu .
Page 5 7 MENU SCREENS FOR SPECIALIST OPTIONS ......123 CUSTOM FRAMING MENUS ..........123 7.1.1 Change, Tx/Rx, Service, CUSTOM Menu .
Page 6 APPENDIX A: DATA INTERFACE INFORMATION ......156 GENERAL ..............156 P1440 IN RS422 MODE .
Page 7: Emc (Electromagnetic Compatibility) And Safety Notices
EMC (ELECTROMAGNETIC COMPATIBILITY) AND SAFETY NOTICES IMPORTANT - PLEASE READ THIS INFORMATION BEFORE INSTALLATION AND USE (ELECTROMAGNETIC COMPATIBILITY) The P300 Modem Satellite Modems have been shown to comply with the following standards: Emissions: EN 55022 Class B; Limits and methods of measurement of radio interference characteristics of Information Technology Equipment.
Page 8: Safety
SAFETY To ensure operator safety the P300 Modems have been designed to comply with the following safety standard: EN 60950 Safety of Information Technology Equipment, including electrical business machines. Prior to installation and operation, please ensure that the following points are observed: Environmental The equipment is designed to operate in a static 19 inch rack system conforming to IEC 297-2.
Page 9: Introduction
(such as Drop/Insert, IDR framing etc) may be tailored to suit any user requirement, however typically they are grouped into one of four standard configurations as follows: P300-VSAT Features for use in VSAT applications. P300-IBS Features for IBS/SMS use (or thin route IDR below T1) services.
Page 10: P300 Features
The P300 has been designed to make field upgrades as easy as possible, and many features may be added by front panel entry of a “Feature Code” which can be issued by Paradise Datacom. Some Options however may require extra hardware to be added (eg extra boards or just IC’s) but this is easily performed by a competent technician.
Page 11: Feature Summary
FEATURE SUMMARY P300 Configuration Feature Description * means h/w option VSAT IBS TCM USER & & & & Base Modem BPSK/QPSK/OQPSK, 4.8kbps to 512 kbps modem RS422 / V.35 / RS232 interface with 25 & 37 pin connectors 50MHz - 90MHz IF interface with 100Hz resolution &...
Page 12: Feature Highlight
FEATURE HIGHLIGHT This list highlights some of the notable features about the P300 Modems: All P300 Modems (ie base modem features) Variable data rate in 1 bps steps with fast acquisition even at low data rates BPSK, QPSK, and Offset QPSK (OQPSK) Viterbi FEC (to IESS 308/309), rate 1/2, 3/4 &...
Page 13 P300-IBS Additional Features INTELSAT Reed-Solomon Feature A fully INTELSAT compliant Reed-Solomon Codec providing Automatic selection of appropriate INTELSAT values of `n, k & t` and interleaving depth for data rate & service selected (n, k, t = 126, 112, 7 by default, switching to 225, 205, 10 or 219, 201, 9 with 4/8 deep interleaving as required for IDR &...
Page 14 P300-IDR Additional Features IDR Option Satellite Framing in accordance with the IDR specification (to IESS 308), including: Standard IDR framing with 2 x 32 kbps ADPCM audio ESC, a synchronous 8kbps ESC data channel, and four backward alarms Enhanced features with the ‘Custom Features’ feature (see later) Independent ESC &...
Page 15 P300-TCM Additional Features 8PSK with rate TCM (50% bandwidth of QPSK ½ rate Viterbi) Extended D/I Feature The extended Drop/Insert provides significant extra features compared to the basic Drop/Insert feature set: Arbitrary & independent timeslot re-ordering for Drop & Insert Full support for G.732 Channel Associated Signalling (CAS) over IBS/SMS links T1-D4 &...
Page 16: Description
IF frequencies, or different services if required. Like all Paradise Datacom products, the P300 includes a traffic log which stores the last 1000 events, suitably time-stamped. It can automatically add several measured parameters to the log at operator set intervals, including average &...
Page 17: Front Panel Features
FRONT PANEL FEATURES STATUS YES / P A R A D I S E ENTER RX OK D A T A C O M Tx path OK for 3.7days NO / TX OK Rx path OK for 2.1days BER < 1E-12 PREV MAIN TEST...
Page 18: Rear Panel Description
At the rear of unit are all of the connectors necessary for the user to interface the Modem to the outside world; IF input and output to frequency conversion equipment, terrestrial data connection, station clock, alarms & AGC output, remote M&C, AC power and so on. MULTI STANDARD INTERFACE PARADISE DATACOM 100-240Vac ESC, AUX & 0.3-0.1A...
Page 19 Rx IF input This connector is a BNC female and can be used as either a 50 or 75 input. The allowable signal level of the desired carrier at the input of the modem is from -60 dBm to -30 dBm. A level of -45 dBm is recommended.
Page 20 of the most popular modes of the P1348/P1448 voice/data mux card used often in SNG applications. An RS232/RS422/RS485 Port for sync/async ESC traffic, this port replaces the shared ESC/Aux access via the Async ESC connector on the main unit. Used to provide access to the 8kbps synchronous IDR ESC channel.
Page 21: Block Diagram
BLOCK DIAGRAM P300H P300 Modem Installation and Operating Handbook Page 21...
Page 22 P300H P300 Modem Installation and Operating Handbook Page 22...
Page 23: Summary Of Specifications
SUMMARY OF SPECIFICATIONS Common Main Specifications Optional features are shown in [square brackets] BPSK, QPSK, OQPSK, [8PSK] Modulation Frequency/Resolution 50 MHZ - 90 MHZ, 100Hz resolution. [50 MHZ - 180 MHZ Wideband IF feature] Traffic Interface Electrical RS422, V.35 and RS232 software selectable (clocking can provide X.21 DCE or DTE mode) Mechanical Both EIA530 DCE and RS449 DCE connectors (25 pin and 37 pin `D`...
Page 24 Reed-Solomon outer FEC [ C oncatenated Reed Solomon outer codec to IESS 308/310] [Optional variable code rate] Reed-Solomon, Turbo, TCM, Viterbi, & Sequential are independent FEC options, all may be fitted simultaneously. Scrambling IBS/SMS Synchronised to framing, per IESS 309 IDR &...
Page 25 External Transmit Inhibit By external contact closure or by TTL signal applied to rear panel connector. Hardware function overrides processor control Demodulator Specifications IF Input Range -45dBm nominal, ±15dB (desired carrier) 30 dB above level of desired input up to a maximum of 0 dBm Maximum Composite Signal Frequency Acquisition Selectable from ±...
Page 26 Monitor Functions Measured FEC input BER (raw channel, not TCM) Estimated FEC output BER (not TCM) Measured Reed-Solomon input BER Estimated Reed-Solomon output BER Measured deframer FAW BER Measured Eb/No ( not based on channel BER, range: 3.0-15.0 dB, accuracy ±0.2 dB). Measured frequency offset (±...
Page 27 Timeslot ID Maintenance when used with Drop/Insert, all in minimum possible overhead down to <0.5%. INTELSAT IBS & Eutelsat SMS [IBS/SMS Feature]. Framing to IESS 309 & IESS 310 INTELSAT IDR [IDR Option]. Framing to IESS 308 & IESS 310 Custom Framing [`Custom Features` feature].
Page 28 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 mux. The bearer generated within the Insert mux provides full multiframe and CRC support and may be generated from the Tx Clock, Station Reference, Satellite Clock or Internal reference.
Page 29 Electrical Interface RS232, RS422, or RS485 external interfaces or internal link to Remote M&C port (software selected). No external cabling required between the ESC and M&C ports for M&C via ESC channel within overhead. Other devices externally wired in parallel with M&C port can also be accessed remotely.
Page 30 Provides 32 or 64 kbps access in place of one or both Audio ESC channels. 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 main data rate.
Page 31 Automatic Entries Average & minimum Eb/No (user defined Average & minimum estimated user BER interval) Buffer fill status Average & 1 minute minimum measured BER from PRBS tester (may run continuously through ESC or Aux channel for continuous traffic quality monitoring) Interrogation method View on front panel LCD, Print to rear panel serial port (`D` type) either...
Page 32 Embedded Software Revised embedded software may be downloaded to FLASH memory with modem still in equipment racks. No EPROMs, no opening of the case. Configuration Memories Up to 10 different configurations can be stored & recalled from the front panel or remote M&C User Interface Clear &...
Page 33 1E-1 Test Conditions: FEC: Viterbi Rate: 128 kbps QPSK Ideal BPSK/QPSK TX: 140.0000 MHz 1E-2 RX: 140.0000 MHz V.35 Scrambling Input Level: -60 dBm 1E-3 1E-4 1E-5 1E-6 1E-7 Rate 7/8 1E-8 Rate 3/4 Spec limit R1/2 Coding 1E-9 Eb/No in dB P300 Modem Series, Error Probability versus Eb/No - Viterbi Decoding P300H P300 Modem Installation and Operating Handbook...
Page 34 1E-1 Test Conditions: FEC: Sequential Rate: 64 kbps QPSK Ideal BPSK/QPSK TX: 140.0000 MHz 1E-2 RX: 140.0000 MHz V.35 Scrambling Input Level: -40 dBm 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 Rate 7/8 Spec limit R1/2 Coding Rate 3/4 1E-9 Eb/No in dB P300 Modem Series, Error Probability versus Eb/No - Sequential Decoding at 64kbps P300H P300 Modem Installation and Operating Handbook...
Page 35 1E-1 Test Conditions: FEC: Sequential Rate: 2048kbps QPSK Ideal BPSK/QPSK TX: 140.0000 MHz 1E-2 RX: 140.0000 MHz V.35 Scrambling Input Level: -50 dBm 1E-3 1E-4 1E-5 1E-6 1E-7 Spec limit 1E-8 R1/2 Coding Rate 7/8 Rate 3/4 1E-9 Eb/No in dB P300 Modem Series, Error Probability versus Eb/No - Sequential Decoding at 2048kbps P300H P300 Modem Installation and Operating Handbook...
Page 36 1E-1 Test Conditions: FEC: Rate 2/3 Pragmatic TCM Ideal BPSK/QPSK Rate: 2048 kbps 8PSK 1E-2 TX: 70.0000 MHz RX: 70.0000 MHz V.35 Scrambling 1E-3 Input Level: -45 dBm 1E-4 1E-5 1E-6 1E-7 RS = Concatenated Reed-Solomon Outer Coding (219,201) 1E-8 TCM no RS TCM plus RS 1E-9...
Page 37 P300 Modem Series, Error Probability versus Eb/No - Turbo Codec P300H P300 Modem Installation and Operating Handbook Page 37...
Page 38: Installation And Configuration
Carrier immediately and submit a damage report. Carefully unpack all items, taking care not to discard packing materials, particularly the moulded foam inserts. Should the unit need to be returned to Paradise Datacom, USE THE ORIGINAL PACKING CARTON. This is the only approved shipping container that Paradise recognises.
Page 39: Menu System
MENU SYSTEM INTRODUCTION All configuration & monitoring features are accessed from the front panel via the menu system. Provided an operator has an understanding of how the menu system works, there is no need to try and memorise the menu structure itself, as selecting a single option (SETUP, INITIAL-CONFIG, explained later) will make the unit prompt for all needed configuration parameters.
Page 40: Menu Structure Diagrams
TO COMPLETELY SETUP INITIALLY YES / ENTER 1:Status 2:Change 3:Monitor NO / MAIN 4:Info 5:Log 6:Test 7:Setup 8:Action PREV MAIN Main Menu 1:Initial config 2:Config check Memories: 3:Store 4:Recall 5:Erase Full Keyboard Detail 7:Setup Tx Service: [?] 1=Off 2=Closed Network 3=IBS/SMS 1:Initial config Modem prompts for Set Tx terrestrial rate: [0000000bps]...
Page 41: Full Menu Structure Page 1/6 (Main: Status, Change)
6.2.1 Full Menu Structure Page 1/6 (Main: Status, Change) CONFIGURATION SUMMARY Choice of default status display selected with Change,User-Opt,Display,Status TRAFFIC STATUS SUMMARY RX TRAFFIC DETAILED STATUS TX TRAFFIC DETAILED STATUS DEMOD STATUS DETAILED SEE PAGE 5 ELECTRICAL INTFC G.703 LINE CODE V.35 RS422 [B8ZS] / [HDB3]...
Page 42: Full Menu Structure Page 2/6 (Main: Monitor, Info)
6.2.2 Full Menu Structure Page 2/6 (Main: Monitor, Info) DEMOD PERFORMANCE SEE PAGE 1 Display of: Eb/No [BER into inner FEC] [BER into RS decoder] [BER on FAW] [Final user BER] TERRESTRIAL BER Display of: [BER into Tx/Drop Mux] [BER of Insert Mux bearer] MONITOR Demod performance [Terrestrial BER]...
Page 43: Full Menu Structure Page 3/6 (Main: Log, Test, Setup, Action, Help)
6.2.3 Full Menu Structure Page 3/6 (Main: Log, Test, Setup, Action, Help) SEE PAGE 1 SEE PAGE 2 LOG VIEW Interactive log scroll/view LOG PRINT TRAFFIC LOG All entries View Unprinted entries Print Cancel Clear AUTOLOG PARAMETERS Autolog Buffer fill state Demod Eb/No LOG CLEAR Final user BER...
Page 44: Full Menu Structure Page 4/6 (Main, Change, User-Opt, Operation)
6.2.4 Full Menu Structure Page 4/6 (Main, Change, User-Opt, Operation) DEFAULT ALL Sets all user options to factory defaults BUFFER AUTO CENTRE BER>1E-3 ACTION ACTIONS Ignore Buffer auto centre Force AIS, raise prompt BER>1E-3 detected alarm and backward alarm AIS detected [Backward Alarm from Sat] AIS ACTION No action...
Page 45: Full Menu Structure Page 5/6 (Change, Tx)
6.2.5 Full Menu Structure Page 5/6 (Change, Tx) SERVICE [CLOSED NET MODE]- BACKWARD ALARM Option:Async ESC Normal (backward alarm) Closed Network No backward alarm No ESC (normal) [IBS] Plus ESC (min o/h) [IDR] [Custom] IBS: MULTIFRAME BACKWARD ALARM [IBS BACKWARD ALARM] OVERHEAD MODE [CUSTOM: BASED ON]- Normal (with)
Page 46: Full Menu Structure Page 6/6 (Change, Rx)
6.2.6 Full Menu Structure Page 6/6 (Change, Rx) SERVICE Change Rx Service exactly as Change Tx Service, see page 5/6 CONTINUOUS DATA Interactive entry of data rate BASEBAND Continuous data INSERT BEARER [DATA FOR THIS DEST']- TOTAL DATA FROM SAT' DATA FOR THIS DESTINATION [Insert mux] [Other function]...
Page 47: Status Screen Display
Status SCREEN DISPLAY When Status is selected the LCD switches to a display of the current modem status. This is a series of screens which are accessible from each other with the Up and Down keys. The available status screens are summarised in the following diagram: STATUS YES /...
Page 48 CONFIGURATION SUMMARY Tx:70.0000MHz 2048k Rx:70.0000MHz 2048k CARR:Normal Eb/No>15.0dB LOCAL Info Configuration Summary Screen This screen displays a summary of the configuration on the top line. The lower line provides carrier unit and traffic messages such as "Carr:On", "Unit Fault" or "Traffic Warn", and the operator has to press the Down key to display the Tx &...
Page 49 TRAFFIC SUMMARY SCREEN Tx Fault: Data input is all ones (AIS) Rx path OK for 36.8 hrs, BER <1 E12 Info Traffic Summary Screen (Tx top line, Rx bottom line) When there are no faults this screen shows how long since the last interruption for both paths (as for the lower line of the example shown), together with the carrier status for the transmit path and the Eb/No (discussed later) for the receive path.
Page 50 DETAILED TRANSMIT TRAFFIC STATUS Tx OK since 08:25 4/6/97 Carr:Normal Demod Detailed Transmit Traffic Status As with the Rx screen, this shows the date of the last interruption to the Transmit path, replaced with a more detailed two line description of any traffic fault/warning condition if it exists. Pressing down again selects the Demodulator Detailed Status.
Page 51: Setup - Initial Configuration Menu
SETUP - INITIAL CONFIGURATION MENU When delivered, or if the non-volatile memory should ever be cleared, the unit must be completely configured using the SETUP, INITIAL CONFIG option. This takes the operator through all the sections of the CHANGE procedure described below to ensure all parameters are set. Only when 'SETUP, INITIAL- CONFIG' has been performed once can STATUS be selected from the main menu.
Page 52: Change, Tx Menu
CHANGE, TX MENU The Change, Tx menu is shown below. Note that options 2-5 are only displayed when the SERVICE option is set to something other than `Off`, and so initially, the screen may only show the SERVICE option. Tx: 1:Service 2:Baseband 3:Clocking 4:Modulator 5:ESC/Aux/BA Change, Tx Menu Taking each of these possible selections in turn:...
Page 53: Change, Tx/Rx, Service, Closed Network
Custom This allows the operator to select a framing format based on the standard IBS/SMS or IDR definitions, but with non-standard or extra features such as Minimum overhead framing, or Multidestinational IBS. A description of the features and menus which follow this choice are in section 7.1.1 "Change, Tx/Rx, Service, Custom Menu"...
Page 54 If No ESC is chosen then the dialogue ends here, otherwise it proceeds with the Backward alarm option as follows: Backward Alarm facility:[?] 1=Normal (Back' Alm) 2=No Backward Alarm Change, Tx/Rx, Service, Closed Net, Plus ESC, BA Menu NORMAL A Backward alarm facility is provided causing a deferred alarm to be raised on this local equipment if the distant end Rx fails for any reason (eg local Tx failure, or distant Rx failure).
Page 55: Change, Tx/Rx, Baseband Menu
6.6.3 Change, Tx/Rx, BASEBAND Menu This menu allows selection of the Baseband mode of the Modem Tx BB: [?] 1=Continuous data 2=Drop Mux 3=Other function Change, Tx/Rx, Baseband Menu Continuous Data Selects normal continuous data interface operation, the menu dialogue for this continues in the next section.
Page 56: Change, Tx/Rx, Baseband, Drop/Insert Menu
Finally for data rate of 48kbps or 56 kbps, in IBS modes the Modem automatically activates the X.50 `bit stuffing` to convert to/from 64kbps (as defined for IBS operation). However in Custom IBS modes the operator is offered the option of not using this facility. In Normal IBS modes then with 48 or 56kbps data the satellite rate is 64kbps x 16/15, but in custom modes this can be reduced to just 48 or 56 kbps x 16/15 (or less if Minimum overhead mode is selected).
Page 57 The Modem hardware is capable of duplication and omission of timeslots, although the operator interface (described above) does not allow such selections. If this is a requirement, please contact the factory to discuss your needs. After the timeslot selection the following prompt appears: Dropped TS: [?] 1=Leave 2=Replace with idle code Change, Tx/Rx, Baseband, Drop/Insert, Idle Menu...
Page 58 For T1-D4 & T1-ESF bearer operation (with the Extended D/I feature available): T1 RBS over satellite: [?] 1=Normal (or no RBS) 2=Maintain RBS Change, Tx/Rx, Baseband, Drop/Insert, RBS Menu NORMAL (OR NO RBS) Robbed Bit Signalling (RBS) is not in operation, or can be ignored. MAINTAIN RBS Robbed Bit Signalling (RBS) is in use with the least significant bit of each timeslot being used for signalling in frames 6 &...
Page 59 Following either of these selections, the Modem counts how many timeslots are being accessed and determines how to maintain the Timeslot identity. Refer to the section on "Timeslot Identity Maintenance" in Appendix F on page 197. Wherever possible the Modem resolves the issues itself, but where there might be a compatibility issue between different modem vendors the modem prompts the operator for input.
Page 60: Change, Tx/Rx, Baseband, Other Menu
If the Modem is in CUSTOM IDR mode (low rate format) then it is possible to maintain the Timeslot ID even with an IDR overhead structure. Refer to the section "Timeslot identity maintenance" in Appendix F on page 197 if a refresh is required. Note that this is only offered under Custom IDR to simplify normal IDR menu operation, but Custom IDR can be selected with all the possible custom features set to `Normal` to allow normal IDR operation, but with timeslot ID maintenance.
Page 61: Change, Tx, Clocking Menu
6.6.7 Change, Tx, CLOCKING Menu Paradise Datacom products have always provided a `Data Marginal` warning where the incoming data phase is monitored with respect to the clock. The Modem shows a `Data Marginal` warning on the front panel if the data changes at the instant where it should be stable (and is sampled by the modem) which would otherwise cause data errors with no fault indication.
Page 62 selected by the Rx Clocking fails, then the backup receive clocks (as defined in the Rx Clock section) also source the Tx Clock as it is slaved to the Rx clock whatever the source. Note the P300 provides as standard the facility for Asymmetric Loop Timing (a $1000 option from some vendors).
Page 63: Change, Tx, Modulator Menu
6.6.8 Change, Tx, MODULATOR Menu Mod: 1:Freq 2:Mod’n 3:FEC 4:RS 5:Scr 6:Carr 7:Pwr 8:Spect Inv 9:AUPC Change, Tx, Modulator Menu Each option leads to the following menus: 6.6.9 Change, Tx/Rx, Modulator, IF FREQUENCY Menu Set IF Frequency: [70.0000MHz] 50-180MHz (100Hz) ???????? (YES) Change, Tx/Rx, Mod/Demod, IF Frequency Menu The operator is be prompted to enter the desired transmit frequency.
Page 64: Offset Qpsk (Oqpsk) Primer
OFFSET QPSK (OQPSK) PRIMER When using Offset QPSK (OQPSK) modulation, the in phase and quadrature components of each symbol do not change together (as with QPSK), but instead one component is delayed by half a symbol compared to the other. Looking at a constellation (vector) diagram this effectively limits the instantaneous change of phase to either +/-90 degrees, excluding the 180 degree phase change which takes the vector transition through the zero amplitude point (equating to an instantaneous null in the RF envelope).
Page 65 For Turbo FEC the FEC rate selection screen is as follows: Select Turbo Mode/Code rate, then (YES) [0.750 Industry de-facto 3/4 rate] Change, Tx/Rx, Mod/Demod, FEC Rate Menu (Turbo) The Turbo FEC code rate may be selected from the scroll list of preset rates dispayed on the screen. pressing YES will accept the current FEC rate and return to the Change, Tx, Modulator menu.
Page 66: Change, Tx/Rx, Mod/Demod, Reed-Solomon Menu
6.6.12 Change, Tx/Rx, Mod/Demod, REED-SOLOMON Menu This option is only available if the INTELSAT Reed-Solomon feature is available (standard P300-IBS and above). INTRODUCTION TO REED-SOLOMON Reed-Solomon FEC is a powerful scheme `wrapped around` the normal inner FEC which may be used to correct the remaining errors from the normal Turbo, Viterbi, Sequential, or TCM inner FEC.
Page 67: Change, Tx/Rx, Mod/Demod, Scrambler Menu
The Reed-Solomon menu appears as follows: Tx RS outer codec: [?] 1=Off 2=INTELSAT n,k,t & depth 3=Other Change, Tx/Rx, Mod/Demod, Reed-Solomon Menu The Reed-Solomon outer FEC codec may be configured as follows: The Reed-Solomon out FEC is disabled. Note that for testing the effectiveness of the RS codec, a test mode allows you to disable the RS decoder error corrections without removing the RS overhead (which changes the satellite data rate and therefore to a small extent the Rx Eb/No).
Page 68 NORMAL Selects the appropriate scrambler based on the current configuration, and enables it (see table below). FEC: No Reed-Solomon Reed-Solomon Active Service type: Non Turbo Turbo Non Turbo Turbo Closed Net (No ESC), Closed Net + ESC (<32kbps), V.35 Scr Turbo Scr RS Scr RS Scr...
Page 69: Change, Tx, Modulator, Carrier Menu
6.6.14 Change, Tx, Modulator, CARRIER Menu Carrier: [?] 1=Off 2=On 3=Muted after pwr brk 4=Intfc RTS Controlled Change, Tx, Modulator, Carrier Menu The state of the Transmit Carrier is selected as follows: The carrier is off. The carrier will remain on, and after a power break it will automatically return to POWER BREAK MUTE The carrier is switched on BUT after a power cut the carrier will be switched off...
Page 70: Change, Tx/Rx, Modulator, Spectrum Invert Menu
6.6.16 Change, Tx/Rx, Modulator, SPECTRUM INVERT Menu Spectrum Invert [?] 1=Normal 2=Invert Change, Tx/Rx, Spectrum Invert Menu This menu allows the Tx Spectrum to be inverted, to cope with satellites or frequency conversion equipment which also inverts the spectrum. Note that apart from the fact that the modem will not lock onto an inverted spectrum, on a spectrum analyser the carrier is to all appearances unchanged.
Page 71: Change, Tx, Modulator, Aupc Mode Menu
6.6.18 Change, Tx, Modulator, AUPC, MODE Menu Set AUPC Mode: [Off] 1=Off 2=Mon dist' 3=Maint' EbNo 4=Self mon Change, Tx, Modulator, AUPC Mode Menu NOTE: You probably need permission from the satellite operators to use AUPC unless you have a blanket power budget which you may use as you see fit.
Page 72: Change, Tx, Modulator, Aupc, Max Menu
6.6.19 Change, Tx, Modulator, AUPC, MAX Menu Set AUPC max positive delta power [3.5dB] (0-25.0dB) ??.?dB (Yes) Change, Tx, Modulator, AUPC, Max Menu This allows the maximum additional power that the AUPC can use to maintain the distant Eb/No to be set. Set this so that the total maximum power (ie the nominal power set with Change, Tx, Mod, Power PLUS the AUPC Max positive delta power) It is within the constraints put upon your carrier by the satellite operators.
Page 73: Change, Tx, Modulator, Aupc, Target Eb/No Menu
6.6.22 Change, Tx, Modulator, AUPC, TARGET EB/NO Menu Set target Eb/No to maintain: [8.5]dB (0 to 25.0dB) ??.?dB (Yes) Change, Tx, Modulator, AUPC, Target Eb/No Menu This screen allows the target Eb/No to be set. This It is the distant Eb/No when the AUPC mode It is set to Maint' Eb/No, and the local Eb/No when set to Self Mon.
Page 74: Change, Tx/Rx, Esc/Aux/Ba Menu
6.6.25 Change, Tx/Rx, ESC/AUX/BA Menu This dialogue is not available when the service is set at Normal Closed Network, and differs between Closed Net Plus ESC, IBS/SMS and IDR services. The IBS/SMS and IDR menu appears below, but some options may not be displayed depending on how the modem Service is defined: ESC/Aux: 1:Define 2:Async ESC 3:Interfaces 4:Audio levels 5:Back’...
Page 75: Change, Tx/Rx, Esc/Aux/Ba, Define (Idr) Menu
IDR MODE ESC & AUX PORT DEFINITIONS 6.6.26 Change, Tx/Rx, ESC/Aux/BA, DEFINE (IDR) Menu When operating in IDR or Custom IDR modes, the Define selection is as follows: IDR 8k ESC: [?] 1=Off 2=Sync 3=Async Change, Tx/Rx, ESC/Aux/BA, Define (IDR), ESC Menu The ESC port is disabled (and all ones is sent in the 8k ESC channel) SYNC Normal 8k synchronous access is provided on the ESC port.
Page 76: Change, Tx/Rx, Esc/Aux/Ba, Define (Ibs) Menu
IBS MODE ESC & AUX PORT DEFINITIONS 6.6.27 Change, Tx/Rx, ESC/Aux/BA, DEFINE (IBS) Menu When operating in IBS or Custom IBS modes, the Define selection is as follows: Tx Aux Port: [?] 1=Off 2=INTELSAT low rate channel 3=Sync Channel Change, Tx/Rx, ESC/Aux/BA, Define (IBS), Aux Menu The Aux port is disabled.
Page 77 The following menu's depend on the selections made for the Aux & ESC channels If the ESC port is OFF and the Aux port is set to Sync Channel then the following menu selects the overhead assigned to the Aux port: Sync Aux circuit o/h usage: [?] 1=Maximum 2:Custom Change, Tx/Rx, ESC/Aux/BA Define (IBS) Aux usage Menu...
Page 78: Custom Ibs Overhead Allocation
6.6.28 Custom IBS Overhead Allocation Several of the above paths lead to the following screen where the available overhead can be allocated between the Aux port (if set to Sync Channel) and the ESC port (if set to Custom). This option is only available of the `Custom Features` feature is available (standard P300-TCM).
Page 79: Change, Tx/Rx, Esc/Aux/Ba, Async Esc Menu
Note 1: Spare unless the unit is configured for 2048kbps, IBS G.732 mode, with spare bits of TS0 set to transparent (when these bits carry the spare bits). To summarise: In standard IBS modes up to (8+8+2+2+1+1) bits = 22/32nd of the overhead may be allocated to the ESC port, and up to (8+8+2+2+1) bits = 21/32nds of the overhead may be allocated to the Aux port.
Page 80: Change, Tx/Rx, Esc/Aux/Ba, Config Async, Baud Rate Menu
6.6.30 Change, Tx/Rx, ESC/Aux/BA, Config Async, BAUD RATE Menu ESC Baud rate: [2400] (YES) (Max continuous rate is 2962) Change, Tx/Rx, ESC/Aux/BA, Cfg. Async, Baud Rate Menu This menu allows the Baud rate for the external interface to the ESC channel to be set. Any rate can be set, although the maximum continuous rate supported is stated (calculated from the terrestrial rate, and async character format).
Page 81: Change, Tx/Rx, Esc/Aux/Ba, Interfaces Menu
6.6.33 Change, Tx/Rx, ESC/Aux/BA, INTERFACES Menu This leads to the selection of the ESC and Aux interfaces. The interface selection screens are only shown for active ports, and so either or both may show in turn depending on how the ports are defined for use. If both are active then the ESC interface is selected first.
Page 82: Change, Tx/Rx, Esc/Aux/Ba, Audio Levels Menu
6.6.34 Change, Tx/Rx, ESC/Aux/BA, AUDIO LEVELS Menu Audio levels: V1=-12.3dBm V2= 5.6dBm Press 1 or 2 then level , YES to fix Change, Tx/Rx, ESC/Aux/BA, Audio Levels Menu This screen is used to set the levels for the Audio ESC ports. These are typical used in IDR modes for the Audio ESC channels, but may also be used when generating a 64kbps IBS carrier (comprising of 2 x 32kbps ADPCM audio channels only), or a 128kbps (comprising of 2 x 32kbps ADPCM audio channels plus 64kbps from the main data port.
Page 83: Change, Tx/Rx, Esc/Aux/Ba, Backward Alarms Menu
6.6.35 Change, Tx/Rx, ESC/Aux/BA, BACKWARD ALARMS Menu This screen is used to configure the four backward alarm inputs used in multi-destinational IDR or for lower rate multi-destinational operation in some of the Custom IBS modes. Back’ Alm 1234: [?] E=Ext A=Auto O=OK 1=EEEE 2=AEEE 3=AOOO 4=AAAA Change, Tx/Rx, ESC/Aux/BA, Backward Alarm Menu This screen is at first difficult to understand, but is relatively simple.
Page 84: Change, Rx Menu
CHANGE, RX MENU Many of the Change Rx Menus are identical to the Change Tx menus, and a reference is made back to the Change Tx description rather than repeat the text unnecessarily. NOTE ON RX=TX FUNCTION The Change, Rx Menu has an extra feature over the Change Tx, namely the ability for the Rx path to track the majority of the Tx configuration parameters (Rx=Tx) to simplify the configuration in symmetrical links (ie the majority).
Page 85: Change, Rx, Service Menu
6.7.1 Change, Rx, SERVICE Menu See "Change, Tx/Rx, Service Menu" on page 52 6.7.2 Change, Rx, BASEBAND Menu The Continuous & Other menu options are identical to the Tx selections, see "Change, Tx/Rx, Baseband Menu" on page 55 The Insert Mux selection is the same as the Drop Mux selection except the prior to the same dialogue as on the Tx path two other questions are asked: Bearer routing (Loop Terr or Generate) &...
Page 86 If Partial Insert is selected the following screen is displayed: Total data rate for ALL dest' from satellite: [1152000] ??????? (YES) Change, Rx, Baseband, Insert Mux, Partial, Total Rate Menu Normally, when using Drop / Insert, the modem determines the expected data rate from the satellite from the number of timeslots specified.
Page 87: Change, Rx, Buffer / Clocking Menu
6.7.3 Change, Rx, BUFFER / CLOCKING Menu Refer also to the following applications sections for helpful notes: 8.1 "Doppler & Plesiochronous Buffering" on page 130 8.2 "Determining Clocking Schemes & Buffer Size" on page 131 and "P1440 in X.21 Mode" on page 162 Buffer/Clocking: 1:Station clock input 2:Rx clock source 3:Buffer Size Change, Rx, Buffer/Clocking Menu...
Page 88: Change, Rx, Buffer / Clocking, Rx Clock Menu
IF spectrum purity is entirely dependent upon the quality (phase noise performance) of the supplied reference. If the external 10MHz reference fails totally then it will be automatically replaced with the internal reference. If however it degrades (level, frequency or phase noise), then until it fails totally the modem will continue to use it as the synthesiser reference .
Page 89 backup the Station Clock if defined as available, or if the Station Clock is defined as not available then recovered Satellite Clock (while demodulator remains locked). Should this first backup fail it finally falls back to the internal 1PPM reference in order to maintain the Rx traffic. If the modem is operating with asymmetric data rates, then the Rx PLL converts the Tx clock to the correct rate for the Rx data.
Page 90: Change, Rx, Buffer / Clocking, Buffer Size Menu
6.7.6 Change, Rx, Buffer / Clocking, BUFFER SIZE Menu This menu is only available of the Rx Clk is not set to Satellite (ie Buffer Disable) ! Refer also to the following applications sections for helpful notes: 8.1 "Doppler & Plesiochronous Buffering" on page 130 8.2 "Determining Clocking Schemes &...
Page 91: Change, Rx, Demod' Menu
6.7.7 Change, Rx, DEMOD’ Menu The options available on this menu change if the Rx=Tx function (on the Change, Rx Menu) is active. Tx=Rx Not active Demod: 1:Freq 2:Mod’n 3:FEC 4:RS 5:Scr 6:Spect Inv 7:Sweep 8:AUPC Change, Rx, Demod Menu (Rx=Tx not active) Rx=Tx Active If the Rx=Tx function is active, only those parameters which vary between Rx &...
Page 92: Change, Rx, Demod' Sweep Menu
6.7.15 Change, Rx, Demod’ SWEEP Menu Demod sweep range: [Normal=±25kHz] 1=Normal 2=User Change, Rx, Demod’ Sweep Menu The operator has control of the sweep range of the Demodulator, but under normal circumstances `Normal` should be selected. Normal is defined as: BPSK, QPSK &...
Page 93: Change, Rx, Esc/Aux/Ba Menu
When operating in this unusual situation without FEC AND without Framing, if the Rx carrier is not exactly on frequency, then it is possible for the Demod to lock onto a `false lock` (and not be able to detect it as false as there is no FEC or framing). In this situation you can either: 1.
Page 94: Change, Terr-Intfc Menu
CHANGE, TERR-INTFC MENU The Change Terr-Interface Menu brings up one of two screens depending on the interface card fitted: Terr interface: 1:Electrical 2:Control Lines 3:Card specific Change, Terr-Intfc Menu Terr-Interface: Nothing to configure with card fitted (YES) Change, Terr-Intfc, Alternate Menu If there are parameters to configure with the interface card fitted, then the options are: ELECTRICAL For interface cards which support multiple electrical interfaces (eg currently...
Page 95 For the first three options the dialogue terminates here, for G.703 it proceeds to the line code selection: Set G.703 line code: [?] 1=AMI 2=HDB3 (Normal) Change, Terr-Intfc, Electrical Menu, Line Code (if G.703) For E1 G.703 the line code selection is as shown above (AMI=Alternate Mark Inversion or HDB3=High Density Bipolar 3).
Page 96: Change, Terr-Intfc, Control Lines
6.8.2 Change, Terr-intfc, CONTROL LINES This screen allows the operator to select whether the modem implements or ignores the interface handshake control lines: Interface control lines:[?] 1=Ignore all 2:Active-configure Change, Terr-Intfc, Control Lines Menu IGNORE ALL All the control lines are ignored, the dialogue ends here ACTIVE- CONFIGURE The three following screens are presented in turn allowing each line to be...
Page 97: Change, Rem-M&C Menu
CHANGE, REM-M&C MENU Remote M&C: [Local] 1:Configure 2=Remote 3=Local (Rem M&C timeout=120s) Change, Rem-M&C Menu This menu allows the remote M&C port to be configured, and control of the unit switched between local and remote. There are many different thoughts on how local / remote switching should be provided ! The text "(Rem M&C timeout=120s)"...
Page 98: Change, Rem-M&C, Configure Menu
6.9.2 Change, Rem-M&C, CONFIGURE Menu Remote M&C: 1:Protocol [Paradise] 2:Intfc [RS485] 3:Baud rate[2400] 4:Addr[123] Change, Rem-M&C, Configure Menu This menu configures the remote M&C port: The options are: PROTOCOL This allows selection between OFF, PARADISE/FDC, and SA-bus. Full details of the remote M&C protocols and messages is provided in the Remote M&C section in Appendix D.
Page 99: Change, User-Opt Menu
6.10 CHANGE, USER-OPT MENU User options: 1:Alarm thresholds 2:Operation 3:Display 4:Analog o/p Change, User-Opt Menu This screen allows access to all the user options, which are described in the following paragraphs. 6.10.1 Change, User-Opt, THRESHOLDS Menu Thresholds: 1:Final BER [1.0E-5] 2:Demod Eb/No [6.0]dB 3:Buffer slip [24]hrs 4:DISTANT Eb/No[8.5]dB Change, User-Opt, Thresholds Menu This screen allows the operator to set thresholds at which a deferred alarm is raised, to allow action to be...
Page 100: Change, User-Opt, Operation, Actions Menu
6.10.3 Change, User-Opt, Operation, ACTIONS Menu Actions: 1:Buffer auto centre 2:BER 3:AIS 4:Back’ Alarm Change, User-Opt, Operation, Actions Menu BUFFER AUTOCENTRE This selects if the receive buffer is automatically centred when the Rx traffic returns to OK from the fail state. This takes advantage of any outage, and ensures the buffer is centred every time normal operation begins.
Page 101: Change, User-Opt, Operation, Terrestrial Menu
6.10.4 Change, User-Opt, Operation, TERRESTRIAL Menu Terrestrial: 1:PCM Bearer CRC BER monitors: 2:Tx/Drop mux 3:Insert mux Change, User-Opt, Operation, Terrestrial Menu PCM BEARER CRC This option is only applicable when the unit is configured for Drop/Insert operation with a PCM bearer which supports CRC (T1-ESF or G.732). When appropriate this accesses a sub menu which is discussed in the following section.
Page 102: Change, User-Opt, Operation, Satellite Menu
6.10.6 Change, User-Opt, Operation, SATELLITE Menu Satellite: 1:BER est’ 2:IBS MF period 3:Carrier ID’s 4:Back alm map 5:IF-50/75 Change, User-Opt, Operation, Satellite Menu BER ESTIMATE This selects the source for the USER BER estimate displayed on the Receive Status Screens, and compared to both the Deferred USER BER alarm, and BER >...
Page 103: Change, User-Opt, Operation, Terr/Sat Menu
three ID's to be set (0-255 for each), and also displays the corresponding ID's from the incoming Rx carrier. Default: all 255 BACK ALM In Custom IBS Modes it is possible to operate an IBS style service, and allow the use of four independent backward alarms (as for IDR) for use on multidestinational services.
Page 104: Change, User-Opt, Operation, Alarms Menu
6.10.8 Change, User-Opt, Operation, ALARMS Menu Customer specific requirements: 1:Relay mode [0] 2:Fault mode [0] Change, User-Opt, Operation, Alarms Menu The two options under this menu are to enable Paradise to add customer specific features to the standard software and avoid having special versions of software for specific customers. As most special requests relate to either alarm handling or relay operation, we have defined two user variables which we can test in the main code, and if necessary perform special functions.
Page 105: Change Time/Date Menu
6.11 CHANGE TIME/DATE MENU Now: 11:29:35 on 12/06/97 - OK (yes) 1 Time adjust, 2 Date Adjust Change, Time/Date Menu This menu is self explanatory, and allows the user to set the correct time and date so that events added to the traffic log are correctly time stamped.
Page 106: Monitor Menu
6.12 MONITOR MENU Monitor: 1:Demod performance 2:Terrestrial BER 3:Carrier ID’s 4:Distant Eb/No & BER 5:AUPC Monitor Menu Each of these options is now discussed in turn. 6.12.1 Monitor, DEMOD PERFORMANCE Menu Eb/No:10.3dB, To FEC:6.8E-4, To RS:7.8E-7 FAW BER:<1.0E-12, Final BER:<1.0E-12 (RS) Monitor, Demod Performance Menu This screen which is regularly updated provides the following information: Demod Eb/No...
Page 107: Monitor, Carrier Id's Menu
6.12.3 Monitor, CARRIER ID's Menu This screen is only available if the receive service supports the transmission of the three identity bytes in the TS32 Multiframe. This includes IBS/SMS modes, Closed Net Plus ESC modes above 32kbps and Custom IBS modes with a TS32 multiframe. Rx ID's carried in IBS MF word TS32bit4 Channel=173 Station=041 Spare=255 Monitor, Carrier ID's Menu...
Page 108: Monitor, Aupc Menu
6.12.5 Monitor, AUPC Menu This screen is only available when the AUPC feature is set to `Maintain Eb/No` or `Self Monitor` (refer to AUPC in section 8.11.1 on page 143) when the AUPC is controlling the Tx power. The first line displays either `Distant Eb/No` or `Self monitor` respectively, the lower line shows the target Eb/No along with its tolerance window, and the current AUPC delta power.
Page 109: Info Menu
6.13 INFO MENU Info: 1:This unit 2:Supplier 3:View Config 4:Terr-Intfc 5:Features Info Menu The options are as follows: THIS UNIT This screen displays the modem number, serial number and software version. Pressing Down Arrow leads to further screens which give the identity of the sub- boards and interfaces fitted to the equipment.
Page 110: Log Menu
6.14 LOG MENU Traffic Log: [43]entries 1:View 2:Print 3:Clear 4:Autolog Log Menu The Log menu allows the operator to view, print or clear the internal 1000 event traffic log. The Autolog option allows the operator to have certain parameters added to the traffic log at regular intervals. The traffic log is a circular store of 1000 locations, events not viewed or printed are lost after 1000 subsequent events.
Page 111 Each option is as follows: BUFFER % The buffer fill state is logged every period this allows fill trends to be monitored Eb/No The average AND worst case Eb/No for the period are logged at the end of the period. USER BER The average AND worst case estimated USER BER are logged at the end of the period.
Page 112: Test Menu
6.15 TEST MENU The test menu is as shown below, and leads on to the menu’s described in the following few paragraphs. When either a loopback or test mode are active, the TEST LED on the front of the equipment illuminates. Test: 1:Loopbacks [Off] 2:RF &...
Page 113 processing is not active, this loops the data at the output of the baseband block (ie it works even if Drop/Insert is not active). ESC & Aux channel data is NOT looped. FRM (L) The data is looped after the Framer back into the Deframer providing a local loop only.
Page 114: Test, Rf & Fec Menu
6.15.2 Test, RF & FEC Menu Test modes: [Off] 1=Off 2:Tx CW 3:Tx Alt 1,0 4=RS corrections disable Test, RF & FEC Menu The test modes available are: All test modes are cancelled. TX CW Selecting TX CW causes a pure carrier to be transmitted. This is useful for evaluating phase noise and spurious, but should not be used over a live satellite link.
Page 115: Test, Int' Bert Menu
6.15.4 Test, INT' BERT Menu (Software>V2.34) Internal BERT: 1=Off 2:Channel [ESC] 3:Pattern[2^15-1] 4:Mode[Manual] 5:Results Test, Internal BERT Menu The internal Bit Error Rate Tester (BERT) is only available if the `PRBS Tester` feature is available (standard on P300-IDR and above). It is a powerful feature capable of monitoring and Auto-Logging the BER of the receive satellite path, even while the main data channel of the link is carrying normal traffic.
Page 116: Test, Int' Bert, Off/Channel Menu
6.15.5 Test, Int' BERT, OFF/CHANNEL Menu Channel for BER Test: [ESC] 1:Main data 2=ESC 3=Aux Test, Internal BERT, Channel Menu The test may run through the Main, ESC or Aux channels. MAIN This first generates an `are you sure` screen before substituting the PRBS in place of the Tx main traffic channel and monitoring for errors on the Rx Main traffic channel.
Page 117 Aux port, then the Aux channel may be set for sync channel and to use all the available overhead not already in use by the ESC channel. This can provide a channel of up to 4.4% of the main data rate. If the `Custom Features` feature is available (standard on P300-TCM), then the overhead may be user assigned between the ESC &...
Page 118: Test, Int' Bert, Pattern Menu
6.15.6 Test, Int' BERT, PATTERN Menu BERT Pattern: [2^15-1] 1:2^11-1(2047) 2:2^15-1 3:2^20-1 Test, Internal BERT, Pattern Menu The test pattern may be selected to be one of three standard patterns as 2 -1(2047), 2 -1, or 2 -1. 6.15.7 Test, Int' BERT, MODE Menu BER Test mode [1 Min] 1=One minute sliding window 2=Manual Test, Internal BERT, Mode Menu...
Page 119: Test, Int' Bert, Results Menu
6.15.8 Test, Int' BERT, RESULTS Menu BERT:Sync OK Loss#:0 Rate:32000bps Errors:328 Time:1.0min BER:1.7E-04 Test, Internal BERT, Results Menu Note in this screen the following keys are active: Press 1 Inject single error (buffered for up to 10 rapid key presses) Press 2 Start a test / Restart the current test (manual mode only) Press 3...
Page 120: Setup Menu
BER is 100% accurate because as well as counting Errors, the BERT also counts PRBS bits received, and calculates the BER as <Errors> / <Count of bits received> (ie both are in proportion). This would not be the case if we did not count the bits received, and simply assumed that the error rate was <Errors>...
Page 121: Help Menu
6.18 HELP MENU Help: 1:Emergency Tx Carrier Off 2:Menu operation 3:Glossary Action Menu The options on this menu are as follows: EMERGENCY TX CARRIER OFF This provides a short route to switch off the Tx carrier in an emergency. It is operational even when under Remote M&C and normal access to the carrier on/off control is disabled (along with most other local control).
Page 122: Service, User Parameters Menu
6.19.1 Service, USER PARAMETERS Menu User: 1:Lock Kbd 2:Clr Cfg 3:Clr All+Reset 4:Fan [Auto] Service, User Parameters Menu The options are: LOCK KBD This locks the keyboard after displaying a screen showing the unlock code. As with all Paradise equipment the unlock code is simply the product number (eg 300).
Page 123: Menu Screens For Specialist Options
MENU SCREENS FOR SPECIALIST OPTIONS The following sets of menu definitions are shown in this separate section in order not to complicate the earlier section dealing with basic menu operation. CUSTOM FRAMING MENUS These features are only available if the `Custom Features` feature is available together with the corresponding IBS or IDR options (standard on P300-TCM).
Page 124 The disadvantage of operating without a TS32 Multiframe is that the synchronous IBS scrambler cannot be used, and the `Normal` scrambler option selects INTELSAT V.35. This results in an increase in the error rate, as the V.35 scrambler multiplies any errors on the channel by a factor of three. Both options lead on to the following question: Backward Alarm:[?] 1=Normal 2=No Backward Alarm facility...
Page 125: Change, Tx/Rx, Service, Custom, Idr Menu
At 2048 kbps with a 9600 Baud ESC channel the overhead can reduce to less than 1% whilst still maintaining the IBS/SMS benefits (namely a factor of three error rate improvement due to using the IBS/SMS scrambler instead of the V.35 scrambler, the ESC channel and the backward alarm facility). The operator can set the ESC channel Baud rate to 9600 Baud even at low data rates.
Page 126 IDR o/h: [?] 1=96k:2x16k-Audio+32k-BER 2=64k:2x16k-Audio only Change, Tx/Rx, Service, Custom, IDR, O/H 16k Menu The modes selected by these two menu's are as follows: NORMAL:96K The normal IDR overhead is used 1XAUDIO:64K The overhead is reduced to 64kbps, the 32kbps defined for Audio ESC channel 2 is not transmitted.
Page 127: Ibs/Sms Operation With 2048Kbps Continuous Data
IBS/SMS OPERATION WITH 2048KBPS CONTINUOUS DATA 7.2.1 Change, Tx/Rx, Baseband, Continuous, 2048k G.732 Menu (IBS) 2048kbps IBS/SMS operation is a special case, in which there are two modes of operation. These modes are confusingly referred to as 1920/1984kbps and 2048kbps mode in the IBS/SMS service definitions, but both operate with a 2048kbps terrestrial data rate ! 2048K IBS mode: [?] 1=Normal (6.7% overhead) 2=G.732 (0% overhead)
Page 128 Whether CAS or NO CAS is selected, the following prompt appears: Timeslot re-order option: [?] 1=Normal (linear) 2=Re-order Change, Tx/Rx, Baseband, Cont', 2048k IBS, G.732, TS Menu The Modem can re-order the timeslot data in the G.732 frame prior to transmission along with the CAS signalling if CAS was selected (although this feature is only available if the Extended D/I feature is available, standard on P300-TCM).
Page 129: Custom Idr Operation With 2048Kbps Continuous Data
CUSTOM IDR OPERATION WITH 2048KBPS CONTINUOUS DATA 7.3.1 Change, Tx/Rx, Baseband, Continuous, 2048k Menu (IDR) If Custom IDR operation based on the Low (T1/E1) IDR format has been selected and the continuous data rate is 2048kbps, then the Modem can offer Timeslot Identity Maintenance and Timeslot Re-ordering features (see the section on "Timeslot Identity Maintenance"...
Page 130: Application Notes
APPLICATION NOTES DOPPLER & PLESIOCHRONOUS BUFFERING There are two terms commonly used when referring to the receive buffering, namely Doppler and Plesiochronous. Doppler: Receive Doppler buffering is required because the incoming data from the satellite is subject to Doppler shift, which occurs in an approximately 24 hour cycle.
Page 131: Determining Clocking Schemes And Buffer Size
DETERMINING CLOCKING SCHEMES AND BUFFER SIZE Please note that unless the clocking scheme has been discussed and agreed by both ends of the link, it is unlikely to work reliably ! You need to know the following things: Incoming Rx carrier : 1.
Page 132: Determining Buffer Size
These require careful consideration based on the exact situation. If you have questions relating to this subject, and are willing to at least draw a diagram of the system you are implementing then you are welcome to contact us by fax for advice for your exact application. 8.2.3 Determining Buffer Size Use the following calculation to determine the buffer size required for any application:...
Page 133: Partial Insert And Multidestinational Working
PARTIAL INSERT AND MULTIDESTINATIONAL WORKING Partial Insert is only available if the Extended D/I feature is available (standard on P300-TCM). In a typical scenario, there may be a 2048kbps incoming carrier, containing say 8 timeslots (512kbps) for this destination. When set to All the full 2048kbps has to be received and passed to the terrestrial. When set to Partial, only the 8 timeslots for this destination are selected and inserted onto the insert mux bearer avoiding overwriting all the data on the bearer.
Page 134: Choosing Optimum Custom Values Of Rs N&K
CHOOSING OPTIMUM CUSTOM VALUES OF RS N&K Complete variable code rate Reed-Solomon is available if both the INTELSAT Reed-Solomon and `Custom Features` features are both available. Note that there is nothing magic about the INTELSAT values, except that they were approved by INTELSAT ! They were chosen because one modem manufacturer could not generate clocks which were not a multiple of 8kHz, and these non-optimum values make the satellite clock an 8kHz step.
Page 135: Notes On Data Rates & Symbol Rates
For other values of overhead (o/h expressed as 1.xx), maximise `t` then: n = Round( (2 x o/h x t) / (o/h - 1) ) k = n - 2t If `n` is greater than 255, reduce `t`. For some applications, particularly when operating with lower data rates, a reduction in the processing delay associated with Reed-Solomon FEC is the prime goal.
Page 136: Determining Exact Maximum Esc Baud Rates
DETERMINING EXACT MAXIMUM ESC BAUD RATES Should you wish to determine the exact maximum ESC Baud rates, in order to change the overhead allocation to achieve specific ESC rates with specific overheads, then the following section may be useful. For Standard IBS the exact maximum continuous rate is: Baud Rate = (Main data rate/15) x (O/H bits allocated/32) x (Bauds per Character/9) Where: Main data rate:...
Page 137: Closed Network Plus Esc
CLOSED NETWORK PLUS ESC 8.7.1 Overhead Rates The following table shows example overhead rates for different async ESC Baud rates at a variety of main channel data rates. The table was generated (using a modem) with the async character format set for 8 bits no parity, the overhead percentages will vary slightly for async character formats different from this.
Page 138: Closed Network Plus Esc Via The Custom Service Menu
8.7.2 Closed Network Plus ESC via the Custom Service menu Early versions of the embedded code for the P400 Series of satellite modems did not directly provide a Closed Net Plus ESC option, although the feature is still available (under a different name) from the Custom Service menu dialogue.
Page 139: Cross Reference To Sdm300 D/I & Framing Modes
CROSS REFERENCE TO SDM300 D/I & FRAMING MODES. The P300 Modem equipped with the Drop/Insert and possibly the Extended Drop/Insert features can provide all the Drop/Insert functions of competing equipment such as the SDM300. If you are familiar with the modes the SDM300 offers then here is a cross reference, along with the menu entries to configure the P300 similarly (unlike the SDM300 however, you don't have learn what the cryptic abbreviations mean, you just answer the questions !) E1_CCS: 2048kbps G.732 with common Channel Signalling...
Page 140 T1_ESF & T1_ESF_S: 1544kbps Extended Super Frame (_S Special) The P300 Modems do not require the _S `Special` mode to support N=9 and N=18, as the P300 Modem equipped with the Extended D/I feature (standard on P300-TCM) can support any value of N. Simply configure as follows: 1.
Page 141: Scramblers
V.35 SCRAMBLERS In all cases, setting the P300 Modem scramblers to Normal will implement the correct scrambling to match the configuration you have the modem in (ie Closed network, IBS, or IDR, with or without Reed-Solomon). Only read this section if you are having trouble interworking two manufacturers equipment which you think is scrambler related (or just for interest !).
Page 142: Interworking Different Manufacturers Equipment
The following table defines what happens when differing scramblers are interworked Scrambler CCITT INTELSAT Linkabit Descrambler CCITT 1x10 error rate* Hopeless Data invert and 1x10 error rate* INTELSAT 1x10 error rate* Hopeless Data invert Hopeless Hopeless Hopeless Linkabit Data invert and Data Invert Hopeless 1x10 error rate*...
Page 143: Introduction To Aupc (Automatic Uplink Power Control)
8.11 INTRODUCTION TO AUPC (AUTOMATIC UPLINK POWER CONTROL) Note: Authorisation from the satellite operator is probably required before AUPC is activated. 8.11.1 Introduction AUPC provides a mechanism to counteract changes in atmospheric conditions (eg rain), which in turn affects the attenuation of the atmosphere and can degrade the performance of a satellite link. It does this by monitoring the distant end Eb/No and automatically adjusting the local Tx power of a satellite link to try and maintain the specified distant end Eb/No figure.
Page 144 In Maint' Eb/No mode the Target Eb/No has to be set as well as a Tolerance window. Only when the target Eb/No tolerance is exceeded is the Tx power adjusted to bring the distant Eb/No back to the target value. The Tx power will only continue to be adjusted automatically until the Eb/No settles on the target value.
Page 145 The AUPC can also be set in self monitor mode (Self Mon). This is used when a single Tx carrier is used to broadcast information to multiple Rx sites. Provided the local modem Rx path is locked to this broadcast carrier then the local Eb/No indicates any atmospheric changes on the local end satellite uplink and down link.
Page 146: Configuring Aupc For Operation
requests for the distant Eb/No and distant end Eb/No responses between M&C messages using the ESC channel. If the ESC interface is set to RS485, then the external RS485 interface will be disabled and the AUPC will use 100% of the ESC channel bandwidth to achieve as high an Eb/No reporting rate as possible. If the ESC interface is set to RS232 or RS422, AUPC cannot be used.
Page 147 Start the AUPC in a passive mode (distant end monitoring only mode) to ensure the system is working: Switch on REMOTE REPORTING (Change, Rx, Demod, AUPC) to respond to the Eb/No requests at the distant modem . Set the local AUPC for Mon Dist, to determine if it is working correctly. If it is then the distant Eb/No should be available on the Monitor, Distant screens.
Page 148: Tutorial On Carrier/Noise & Eb/No Measurements
8.12 TUTORIAL ON CARRIER/NOISE & Eb/No MEASUREMENTS 8.12.1 Introduction This is the source of much confusion and `Specmanship`. This brief tutorial explains what the terms mean and how to measure and interpret the figures you see. The diagram on the following page attempts to summarise this as clearly as possible visually with the text below adding detail for which there is no room on the diagram.
Page 149: Practical Implications Of Displayed Eb/No
( RS Code Rate 10 log It is this E / N that is typically displayed on the front panel of Modem equipment. Finally, after the RS Decoder comes Deframing and baseband processing such as Drop/Insert. IBS/SMS or IDR deframing does decrease the bandwidth, but the bandwidth reducion effects of deframing are ignored as INTELSAT chose to define the mandatory modem performance in terms of E / N , specifying that this relates to the Composite Information Bit Rate (ie it includes framing).
Page 150: Eb/No Explanatory Diagram
8.12.4 Eb/No Explanatory Diagram Spectrum Analyser Measure: (C+N) / N dB Carrier + Noise Noise Carrier+Noise Noise Symbol Transmitted FEC Decoded Composite From Satellite Rx Data Rate Bit Rate Data Rate Information Rate DEMOD DEFRAMING DECODER DECODER Signal / noise expressed Signal / noise expressed E DE Signal / noise expressed at...
Page 151: Tables To Convert (C+N)/N To Eb/No
8.12.5 Tables to Convert (C+N)/N to Eb/No 2.75 3.05 3.35 3.64 3.92 4.20 4.47 4.74 5.01 5.27 5.53 5.78 6.03 6.28 6.53 6.77 7.01 7.25 7.49 7.72 Adjust for Adjust for Adjust for 7.95 modulation: FEC Rate: RS Codec: 8.19 8.42 BPSK: -0dB ½...
Page 152: 1 For 1 Operation
1 FOR 1 OPERATION THEORY Any two Modem's will operate as a 1 FOR 1 redundant pair, with no other equipment except for a single interconnecting lead, two power splitter/combiners and cable forms to parallel up the interfaces of both units.
Page 153: Practical 1 For 1 Implementation
Detected failures A failure is defined as either a detected failure of the unit, or a catastrophic (power) failure. The Modems will changeover if one fails, and if the other unit indicates that it is still operational. If both units fail simultaneously (which is likely to be caused by external circumstances), then no changeover takes place.
Page 154: Boot Code Operation
BOOT CODE OPERATION 10.1 FLASH SOFTWARE UPDATE The Modem software is contained in a FLASH EPROM, and can be updated without opening the equipment through the serial port on the Async ESC connector. It is not even necessary to remove the equipment from the rack BUT it is necessary to route the traffic via another modem, as loading the software requires a processor reset and will affect the traffic.
Page 155: Other Boot Code Options
The following options allow a fully equipped P300 to act as a model with fewer options to enable testing of a lower specified product to see if it provides the facilities required. Reduce the functionality to P300-VSAT level (from a higher level only) Reduce the functionality to P300-IBS level (from a higher level only)
Page 156: Appendix A: Data Interface Information
APPENDIX A: DATA INTERFACE INFORMATION GENERAL Unlike previous Paradise Datacom products, the standard interface of the P300 Modem DOES NOT SIMPLY UNPLUG. Instead to reduce the cost of the modem the interface is built as a standard part of the main PCB and includes RS422, V.35, and RS232 modes.
Page 157: P1440 In Rs422 Mode
P1440 IN RS422 MODE The P1440 is the standard interface supplied with the P300 Modem. If RS422 is selected under Change, Terr-Intfc, Electrical then the following interface description applies. 25 pin 37 pin RS422 Circuit Electrical Signal Description Name Number Levels DATA CIRCUIT TOWARDS MODEM (TX) &...
Page 158: P1440 In V.35 Mode
P1440 IN V.35 MODE The P1440 is the standard interface supplied with the P300 Modem. If V.35 is selected under Change, Terr-Intfc, Electrical then the following interface description applies. 25 pin 37 pin V.35 Circuit Electrical Old Style Signal Description Name Number Levels...
Page 159: P1440 In Rs232 Mode
P1440 IN RS232 MODE The P1440 is the standard interface supplied with the P300 Modem. If RS232 is selected under Change, Terr-Intfc, Electrical then the following interface description applies. 25 pin 37 pin RS232 Circuit Electrical Signal Description Name Number Levels DATA CIRCUIT TOWARDS MODEM (TX) &...
Page 160: P1440 In G.703 Mode
P1440 IN G.703 MODE If the G.703 option is fitted to the P300 modem, then G.703 becomes a front panel / software selectable interface in addition to the standard RS422, V.35 and RS232 interfaces. If G.703 is selected under Change, Terr-Intfc, Electrical then the following interface description applies. Note on E1 G.703 cards you must set switch 2 on the G.703 option to select either 75 G.703 (on the BNC connectors) or 120...
Page 161 Sw1 position 2 1:1 Operation, the G.703 output goes high impedance if power is removed allowing the units 1:1 partner to carry the traffic. The normal input impedance switches to whichever one is on-line (with the standby input at high impedance) Installation note: If installing the G.703 card, the BNC labelled `IN` connects to J3 on the card, and the BNC labelled `OUT` to J2 on the card.
Page 162: P1440 In X.21 Mode
P1440 IN X.21 MODE The P300 along with its standard P1440 RS422/V.35/RS232 interface can provide both X.21 DCE and X.21 DTE operation. For X.21 operation the card must be set to RS422 mode, and the Tx & Rx Clocking modes must be set correctly.
Page 163 X.21 DTE OPERATION This only has a clock to the modem from the terrestrial equipment. Configure a cable with a 15 pin `D` male at one end (X.21 DTE) and either a 25 pin or 37 pin `D` male (not both) at the other end as follows: X.21 DTE 25 pin 37 pin...
Page 164: P1451 Eurocom D/1 `D` & `G` Plus Multi-Standard Interface
P1451 EUROCOM D/1 `D` & `G` PLUS MULTI-STANDARD INTERFACE The P1451 interface provides support for the Eurocom D/1 interface often used in military or government applications, it includes both the Eurocom `D` and `G` interfaces as defined for the Eurocom Tactical Communications systems.
Page 165 Eurocom D/1 interface `D` operation The Eurocom `D` interface uses transformer coupled differential clock and data signals. The data signal is AMI coded, and the amplitude of both clock and data signals is ±0.5V (ie 1.0 V peak to peak). The differential lines are of 130 impedance, and the centre tap of the line coupling transformers may either be grounded, or left floating.
Page 166 Eurocom D/1 interface `G` operation The Eurocom `G` interface uses transformer coupled differential combined clock and data signal which is diphase coded. The amplitude is ±1.0V (ie 2.0 V peak to peak). The lines are of 130 impedance, and the centre tap of the line coupling transformers may either be grounded, or left floating.
Page 167: Appendix B: Modem Connector Pinouts
APPENDIX B: MODEM CONNECTOR PINOUTS REMOTE M&C (RS485/RS232) CONNECTOR The selection of RS232 or RS485 must be made via the front panel. Refer to Appendix D for an overview of the Remote M&C protocol. Connector type: 9 Pin `D' Female, pin compatible with `SA-bus` Name-RS485 Signal Name-...
Page 168: Interconnecting Devices Using Rs485
Interconnecting Devices Using RS485 This page summarises the RS485 M&C ports of many different equipments from multiple vendors and explains how to interconnect them all for M&C operation. Connect any of the following devices in parallel on a daisy chain cable for multi-device operation: Product: Paradise Paradise...
Page 169: For 1 Interface
Refer to the earlier section on 1 FOR 1 switching for details of 1 FOR 1 operation. A standard 1 FOR 1 lead is available from Paradise Datacom, part number P1391. The lead is 10cm long, and is designed for use when two Modem are mounted vertically adjacent to each other in the rack.
Page 170: Alarms & Agc Connector
ALARMS & AGC CONNECTOR Connector type : 15 pin `D' male ALARMS CONNECTOR 2, 12 Fault Relay - Common Prompt Unit fault - N/O Prompt Unit fault - N/C Prompt Traffic fault (prompt) - N/O (c/o pair a) Prompt Traffic fault (prompt) - N/C (c/o pair a) Prompt Traffic fault (prompt) - N/O (c/o pair b) Prompt Traffic fault (prompt) - N/C (c/o pair b) Deferred alarm - N/O...
Page 171: Async Esc Connector
ASYNC ESC CONNECTOR This connector carries: An RS232/RS422/RS485 async port for use on either the ESC or Aux channels An RS232 serial port for log printing & embedded M&C update An RS422 Station Clock input The Receive constellation monitor points (if the Monitor/AGC option is fitted) ASYNC ESC CONNECTOR RS232 RS422/...
Page 172 Modem pin 5 to PC pin 3 [2], and Modem pin 13 to PC pin 7 [5]. See `STANDARD LEAD` below. STANDARD LEAD A constellation monitor / serial lead is available from Paradise Datacom, part number M1479. This lead provides the required connections to a 25 pin D type for a PC connection (for printing/capturing a log or updating the modems embedded software), and three BNC’s for connecting to a scope for the...
Page 173: Esc/Aux & Backward Alarms Connector
ESC/AUX & BACKWARD ALARMS CONNECTOR This connector is fitted as part of the IDR option (standard on P300-IDR and above). Note that when this option is fitted the ESC and Aux ports on this connector replace the shared ESC/Aux port on the Async ESC connector.
Page 174 Aux Port Pin Number Sync Async RS422 usage RS 232 usage & Tx Aux Clock out A Tx Aux Clock out & Tx Aux Clock out B & & Tx Aux Data in A Tx Aux Data in & & Tx Aux Data in B &...
Page 175 Audio Ports Pin Number Description Tx Audio Channel 1 in A Tx Audio Channel 1 in B Tx Audio Channel 2 in A Tx Audio Channel 2 in B Rx Audio Channel 1 out A Rx Audio Channel 1 out B Rx Audio Channel 2 out A Rx Audio Channel 2 out B Ground...
Page 176 Backward Alarms Pin Number Description BA 1-4 Common BA1 N/O BA1 N/C BA2 N/O BA2 N/C BA3 N/O BA3 N/C BA4 N/O BA4 N/C BA1 Input BA2 Input BA3 Input BA4 Input Rx Summary fault output (link to BA in) Ground N/O indicates normal open in the normal, non-alarm state &...
Page 177: Appendix C: Upgrade Information
ASIC to provide many of its features. To provide the cost reduction on the base unit (ie the P300-VSAT), wherever a feature required significant hardware the hardware has been made optional. However as most of the processing is provided by the...
Page 178: Appendix C1: Modem Capabilities & Upgrades
APPENDIX C1: MODEM CAPABILITIES & UPGRADES DETERMINING THE HARDWARE CAPABILITY OF A MODEM Normally where a Feature Code upgrade is available (ie one that does not require a physical hardware upgrade) then the screens show " Note" at locations where extra features would appear. These notes can however be turned on and off by selecting Change, User-Opt, Display, Upgrade Messages, Display or Inhibit on recent software, so if no message is shown do not assume an upgrade is not available.
Page 179 The modem will cease to be able to provide these features when the period expires unless a Feature Code issued by Paradise Datacom is entered. If you have no means to get a feature code from Paradise Datacom (eg lack of comms, public holiday etc), use one of the 5 day user activated Feature Test periods to provide cover until you can contact us.
Page 180 If you contact Paradise Datacom directly we will supply within a few minutes by fax a Feature Code to provide the extra features you require (eg addition of Reed-Solomon etc). This will be a temporary code valid for probably 30 days to enable you to raise and place a purchase order on your supplier. When you place a formal order on the supplier for the features, a Feature Code will be provided to make the features permanent.
Page 181 ALPHABETIC FEATURE LIST Included as standard Feature P300 P300 P300 P300 Letter Description of Feature P300 VSAT User Tx path: without this the modem can be Rx only Rx path: without this the modem can be Tx only Variable rate: Variable data rate if enabled (see `R`), fixed if not (See `Q`) &...
Page 182: Appendix C3: Features On Demo Expire Soon
APPENDIX C3: FEATURES ON DEMO EXPIRE SOON ** IF YOU HAVE BEEN REFERRED TO THIS SECTION BY A MESSAGE ** ** ON THE EQUIPMENT DISPLAY, THEN THIS IS VERY IMPORTANT ** The modem is warning you that at least one of the features the modem is using in order to operate as configured is due to expire soon.
Page 183: Appendix D: Remote M&C
ASCII characters. Whilst this is not specified for the Paradise / FDC protocol, Paradise Datacom have attempted to achieve this wherever possible. For this reason, only 6 bits of each character of the `Body` are utilised (bits 0 to 5). Bit 6 is fixed at a one for both protocols, and for the Paradise / FDC protocol (where the character has 8 bits, 0-7), bit 7 is fixed at a zero.
Page 184: Message Structure
(low) is defined as a positive voltage. This means that a RS232 character will appear as the RS485 `A` line shown previously, except it will transition from <-3V to >+3V as opposed to 0V & 5V. Message Structure All messages are transmitted in a defined message format. The formats are as follows: Paradise / FDC The same format is used for message from Master to Slaves, and Slaves to Master.
Page 185: Message Categories
Messages to read the traffic log Administrative messages The following table summarises all messages, including the message categories listed above. A detailed list of the content of each message is available on request from Paradise Datacom. P300H P300 Modem Installation and Operating Handbook...
Page 186: List Of All Remote M&C Messages
List of All Remote M&C Messages Cat' Message First Direction Instr' Body Partner Function Mnemonic Avail' Code Length (optional) RxBBQry V0.61 to unit RxBBRd Query Configuration of the Rx Baseband section, ie Insert Mux, Deframer, Clocking, Buffer, ESC functions, Descramblers, Station clock (current config or config RxBBRd V0.61 from unit...
Page 187 Cat' Message First Direction Instr' Body Partner Function Mnemonic Avail' Code Length (optional) UnitTestWr V0.61 to unit (ack) Change RxCalcQry V1.49* to unit RxCalcRd Query Calculated Rx parameters, eg intermediate data rates (ie with each overhead as added), Min overhead frame lengths, ESC rates available (current config only) RxCalcRd V1.49* from unit...
Page 188 Cat' Message First Direction Instr' Body Partner Function Mnemonic Avail' Code Length (optional) TimeDateQry V0.88 to unit TimeDateRd Query The time & date of the internal real time clock. The timeDateWr will probably be used in broadcast mode (address 0), and the TimeDateRd probably used on TimeDateRd V0.88 from unit...
Page 189: Appendix E: Customer Specific Features
APPENDIX E: CUSTOMER SPECIFIC FEATURES This appendix lists the customer specific options available on the P300 Modems: Refer to the Change, User-Opt, Operation menu, section 6.10.8 on page 104 for explanations of how to use these parameters: RELAY MODE SETTING Default (normal) relay operation.
Page 190: Fault Mode Setting
FAULT MODE SETTING Default (normal) fault detection ISDN Backup (<V2.14) / ISDN backup AND OQPSK Compatibility (>=V2.14) Software <V2.14: Exactly as defined for Fault Mode 13 (but available in earlier versions). Software >=V2.14: A combination of Fault Mode 13 (ISDN backup) AND Fault Mode 12 (OQPSK Compatibility).
Page 191 Disable the Upper Temperature Limit The specified upper internal temperature limit of the modem is 60C. Within three degrees of this the unit will raise a Unit Warning (& deferred alarm relay) “Warning: Int' temp 57C, Tx CARRIER WILL MUTE outside operating range 0-60C”. Above an internal temperature of 60C the carrier mutes and a Unit Fault is raised (&...
Page 192 In order to be in accordance with general industry practises Paradise Datacom has changed which of the two components is delayed with respect to the other between the earliest of the P400 series modems and ongoing P400/P300 production. If you experience difficulty interworking in OQPSK mode between equipments, switch on this mode at the transmit end of the link which fails.
Page 193: Uncommitted Dac Output Control
UNCOMMITTED DAC OUTPUT CONTROL The output controlled by this selection in only available of the Monitor/AGC option is fitted. Refer to the Change, User-Opt, AGC Output menu, section 6.10.10 on page 104 for an explanation of this parameter. This output is updated 10 times per second. Note: For antenna pointing AGC whilst demod unlocked, see definition of pin 8 on alarms and AGC connector.
Page 194 Distant end Eb/No (Software versions >=2.12) Valid only when the AUPC feature is active, this provides an output of the distant end Eb/No. Scaling is as for option 1 (Local Rx Eb/No). AUPC Delta Power (Software versions >=2.12) Valid only when the AUPC feature is active, this provides an output of the local power adjustments in made in order to maintain the distant Eb/No.
Page 195: Appendix F: Framing And Drop/Insert Overview
APPENDIX F: FRAMING AND DROP/INSERT OVERVIEW IBS/SMS FRAMING IBS/SMS Service Features The INTELSAT definition of IBS framing (IESS 309) is intentionally very similar to Eutelsats SMS framing (EESS 501 "SMS QPSK/FDMA System Specification"), as they are both designed to allow common equipment to provide for both services.
Page 196 point and instead of having even & odd frames of 32 timeslots, it defined one longer frame equivalent to an even then an odd G.732 frame. An IBS frame therefore has 64 timeslots, with special functions for TS0, TS16, TS32 (same as G.732 TS0 odd), and TS48 (same as G.732 TS16 odd), which leaves 60 timeslots available for normal data.
Page 197: Implementation Of Timeslot Id Maintenance
Timeslot ID Maintenance Timeslot identity maintenance is the facility to maintain the identity of individual data streams when multiplexed together into one aggregate rate carrier (eg in its simplest form two independent 64kbps circuits in one 128kbps carrier). Typically such individual data streams comprise of 64kbps data channels from `N` timeslots of terrestrial PCM bearers, interfaced to the IBS/SMS framing via the Drop/Insert multiplexer.
Page 198: Signalling Systems Introduction: Ccs, Cas & Rbs
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 maintenance for these `odd values of N`, however the P300 when equipped with the Extended D/I feature uses a derivative of the IBS CAS Multiframe (see later section "CAS Multiframe") to provide timeslot ID maintenance for even these remaining values of N.
Page 199: Cas Multiframe
Channel Associated Signalling The IBS specification includes an option for equipment to support CAS, and defines a mechanism whereby the CAS (the 2kbps signalling channel per timeslot) can be carried within the 6.7% IBS satellite overhead. This option is fully implemented within the P300 equipped with the Extended D/I feature (standard on P300 TCM), and is further explained in the following section on "CAS Multiframe".
Page 200 The CAS Multiframe structure is of variable length (in multiples of 8 frames), and this feature lends itself to providing timeslot ID Maintenance for `Odd value of N`, ie values which the fixed length TS32 multiframe cannot accommodate. This is an efficient use of the overhead as when not sending signalling information 15 out of every 16 TS16/TS48 locations are still available for high rate ESC, even when the CAS multiframe is required to support `Odd values of N` or Robbed Bit Signalling.
Page 201: Idr Framing
IDR FRAMING IDR Service Features The INTELSAT definition of IDR framing is in IESS 308. Eutelsat have a similar system defined in EESS 203 "Intermediate Rate Digital Carriers (IDC), Earth Station Standard" which simply cross refers back to the INTELSAT IESS 308 standard for the Channel Unit Characteristics, and so the Modem equipment required for these services is identical.
Page 202: Appendix G: Fault Messages And Action Table
APPENDIX G: FAULT MESSAGES AND ACTION TABLE The table on the following pages lists the faults which can be shown on the modem display, along with a description of what the fault means, and the actions the modem will take if such a fault occurs. It also shows relevant checks the operator might make to try to eliminate the fault condition.
Page 203 Actions (see notes at end of table) Text on Display Description / Cause / Notes Relays To Terr To Sat Other UNIT FAULTS Unit Faults: Status LED=Red, & Unit Fault (prompt) relay (Top+Bottom lines of display) Software Initialising please wait Unit executing power up sequence (<5 secs) U,T,D Unit Fault: Tx carrier muted, unit temp...
Page 204 Text on Display Description / Cause / Notes Relays To Terr To Sat Other UNIT WARNINGS Unit Warnings: Deferred alarm relay only (Top+Bottom lines of disp’) Warning: TX CARRIER IS MUTED as power The Tx carrier is set to mute after a power fail. The power has failed and returned and the operator It is the carrier mute outage, CARRIER: 1=Restore 2=Mute is offered the option to restore the Tx carrier status to ON.
Page 205 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Tx Fault: Frame sync lost on Tx input The modem only detects frame sync when the Drop mux is active (or 2048k IBS G.732 0% SA,SC overhead mode is enabled).
Page 206 Text on Display Description / Cause / Notes Relays To Terr To Sat Other TX WARNINGS Tx Traffic warnings: Deferred alarm relay only (Top line of display) Tx Warn: Reconfiguring Tx path The modem is reconfiguring the Tx path (after a user parameter change). Tx Warn: Data marginal, clock inv ? The phase of the input Clock and Data is checked to ensure the data is stable when it is actually latched into the modem.
Page 207 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Tx Warn: Framer Sig' FIFO slip The FIFO which carries the CAS signalling from the Drop Mux to the Framer has slipped (full or empty). This should never occur in operation (contact factory). Tx Warn: RS Encoder FIFO slip The FIFO which interfaces the Framer to the Reed-Solomon encoder has slipped (full or empty).
Page 208 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Fault: CAS Multiframe sync lost The modem cannot find the IBS CAS Multiframe sync on the receive data although it has found TA,TC Frame sync and TS32 Multiframe sync (otherwise the Frame/Multiframe sync messages above would display).
Page 209 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Fault: <line> off, <DTE/DCE> not ready <line> depends on the interface in use (eg RS422 DCE=”TR”, V.35=”DTR”). This is a DC control line which is used to indicate the terrestrial equipment is functioning properly. The <line> switching off may be user set to cause this fault or be ignored (Change, Terr-Int, Control Lines).
Page 210 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Fault: Clk PLL lock fail to <source> The PLL which generates the Rx output clock (or backup Rx clock) has failed to lock to the TA,TC specified reference.
Page 211 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Warn: Back' alm 1234 from satellite The display may show numbers or dashes (eg “-2-4") corresponding to 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.
Page 212 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Warn: MF Back' alm Rx'd at ins' mux This fault will only be displayed if the modem if fitted with an interface which provides four ports for separate input and output of separate Tx/Drop and Rx/Insert PCM bearers.
Page 213 Text on Display Description / Cause / Notes Relays To Terr To Sat Other Rx Warn: Buffer overflow & recentre The Doppler / Plesiochronous buffer has filled, and automatically slipped to position itself back in mid position. Half the buffer capacity will have been discarded, but for framed data (eg T1/E1 only) frame sync will not be lost if the user option (Change, User-Opt, Operation, Terr/Sat, Buffer MF Slip) is set to “Adjust”, to ensure buffer slips are an integer multiple of the multiframe length.
Page 214 Actions: To Satellite SA = AIS (all ones), framed and scrambled ad subject to RS coding if active. [Equivalent to SMS/IBS/IDR AK1/AD1/AD1] SB = Frame Backward Alarm (in IBS/SMS this is direct, in IDR or when multiple backward alarms are active it corresponds to the “Rx Summary Fault Output” which is externally patched back into the Backward Alarm inputs).
Page 215 You might try to clear the units non-volatile memory, then reconfigure the unit from scratch. From the main menu select 0, then User Parameters, Clr All + Reset. If this fails contact the factory for an RMA number then return the unit for repair. If the unit will not boot to allow you to select from the screens, you can also clear the memory by powering up the unit while holding in the `NO` key (but you have to hold the key in until the unit gives its normal three beeps).

This manual is also suitable for:

P300-tcm P300-ibs P300-idr

Paradise Datacom P300-VSAT Installation & Operating Handbook

1 Emc (Electromagnetic Compatibility) and Safety Notices

2 Introduction

3 Description

4 Summary of Specifications

5 Installation and Configuration

6 Menu System

7 Menu Screens for Specialist Options

8 Application Notes

1 For 1 Operation

10 Boot Code Operation

Appendix A: Data Interface Information

Appendix B: Modem Connector Pinouts

Appendix C: Upgrade Information

Appendix C1: Modem Capabilities & Upgrades

Appendix C2: Feature Screens

Appendix C3: Features on Demo Expire Soon

Appendix C4: Asymmetric Loop Timing

Appendix C5: Upgrade Available

Appendix C6: Features Not Available

Appendix D: Remote M&C

Appendix E: Customer Specific Features

Appendix F: Framing and Drop/Insert Overview

Appendix G: Fault Messages and Action Table

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Summary of Contents for Paradise Datacom P300-VSAT