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
P300 SERIES FEATURES ........
Page 3 OFFSET QPSK (OQPSK) PRIMER ..........66 6.6.11 Change, Tx/Rx, Modulator, FEC Menu .
Page 4 6.10.4 Change, User-Opt, Operation, TERRESTRIAL Menu ..... 103 6.10.5 Change, User-Opt, Operation, Terrestrial, PCM BEARER CRC Menu ..103 6.10.6 Change, User-Opt, Operation, SATELLITE Menu .
Page 5 8 APPLICATION NOTES ............140 DOPPLER &...
Page 6 APPENDIX A: DATA INTERFACE INFORMATION ......167 GENERAL ..............167 P1440 IN RS422 MODE .
Page 7: Emc (Electromagnetic Compatibility) And Safety Notices
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: P300H P300 Series Modem Installation and Operating Handbook Page 7...
Page 8 The equipment is not designed to operate with an IT power system which has no direct connection to earth. CAUTION: This unit has DOUBLE POLE / NEUTRAL FUSING. P300H P300 Series Modem Installation and Operating Handbook Page 8...
Page 9: Introduction
P300, the P300 Turbo, P310 L-Band and P311 mixed L-Band/IF Modems. Where ever reference is made to the P300 or P300 Series modem it applies to all products unless specifically noted. The P300 Series may be supplied equipped with different feature sets to suit different applications. This...
Page 10: P300 Series Features
P300-IBS, P300-IDR and the P300-TCM. The P300 Series 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...
Page 11: Feature Summary
Options marked with an asterisk will require boards or single IC’s to be added to the unit in order to add the option at a later date. Features without an asterisk can be added by entering a “Feature Code” into the front panel of the equipment. P300H P300 Series Modem Installation and Operating Handbook Page 11...
Page 12: Feature Highlight
FEATURE HIGHLIGHT This list highlights some of the notable features about the P300 Series Modems: All P300 Series 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 ½, 3/4 &...
Page 13 Insert mux to pick up Rx data Timeslot ID maintenance even with Closed Net Plus ESC carriers Enhanced features with the Extended D/I Feature (see later) P300H P300 Series Modem Installation and Operating Handbook Page 13...
Page 14 BERT results can be logged in the traffic log at user set intervals, providing continuous traffic quality monitoring and recording when operating through the overhead in parallel with the main data. Compatible with patterns used by test equipment such as the Firebird etc. P300H P300 Series Modem Installation and Operating Handbook Page 14...
Page 15 Monitor only option for distant end Eb/No & BER monitoring without power control. Adds optional automatic regular logging of AUPC delta power and distant end Eb/No. Uni-directional, bi-directional and broadcast (Tx only / self monitor) modes. P300H P300 Series Modem Installation and Operating Handbook Page 15...
Page 16: Description
DESCRIPTION OPERATION The P300 Series modem are fully software controlled and with the exception of the optional G.703 interface option there are no links or switches used to configure the unit. This enables all control and configuration to be performed either locally from the front panel, or by remote M&C. Local control is by front panel keyboard, and a large, easy to read, 80 character LCD display, with clear, intuitive menus for configuration and control.
Page 17: Front Panel Features
If the STANDBY LED is Amber, the Tx carrier is off. It may be intentionally switched off, or it may be muted due to either a fault, an external mute signal, or if in a 1-FOR-1 redundant pair it may be the standby unit. P300H P300 Series Modem Installation and Operating Handbook Page 17...
Page 18: Rear Panel Description
This is a 9 pin female 'D' type connector whose pinout and interface levels are `SA-bus` compliant. The Modem can be set to operate with either Paradise/FDC or SA-bus protocols. The electrical interface can be selected between RS232 (for direct to PC applications) & RS485 (for multidrop applications). The Remote M&C port may be internally linked (ie no cables) to the Async ESC port for over the satellite distant...
Page 19 32kbps ADPCM audio channels, or a 128kbps IBS carrier comprising 64kbps data (from the main data interface of the modem) plus the two 32kbps ADPCM audio channels. This is an emulation P300H P300 Series Modem Installation and Operating Handbook Page 19...
Page 20 This LED mirrors the front panel standby LED, so that from the rear of the equipment the operator can tell if the carrier is off, or more importantly which unit of a 1:1 pair is the offline unit. P300H P300 Series Modem Installation and Operating Handbook Page 20...
Page 21: Block Diagram
BLOCK DIAGRAM P300H P300 Series Modem Installation and Operating Handbook Page 21...
Page 22 P300H P300 Series Modem Installation and Operating Handbook Page 22...
Page 23: Summary Of Specifications
* Note: Maximum data rate is 512kbps in all modes before overheads unless the High Data Rate option is fitted. Forward Error [Turbo Product Codec (TPC), Preset rates inc rate ½, ¾, , & 0.789] Correction [TCM rate to IESS 310] P300H P300 Series Modem Installation and Operating Handbook Page 23...
Page 24 -30dBc, min. Output Phase Noise <1.0 degrees RMS double sided, 100Hz to 100kHz Output Frequency Stability As per internal reference from 0 C to 50 C (See Internal Reference below) P300H P300 Series Modem Installation and Operating Handbook Page 24...
Page 25 1 x 10 3.7dB 4.5dB 8.3dB 1 x 10 6.3dB 8PSK/TCM (all rates) 1 x 10 10.4dB 8PSK/TCM + Reed- 1 x 10 6.1dB Solomon 1 x 10 7.3dB (all rates) P300H P300 Series Modem Installation and Operating Handbook Page 25...
Page 26 (T1/E1). Buffer storage is 32kBytes, so above 2.6 Mbps max buffer size reduces linearly from 99 ms to 52ms at 5.0Mbps P300H P300 Series Modem Installation and Operating Handbook Page 26...
Page 27 (7 in 126 = 5.5% and 4 in 64 = 6.25% respectively), with similar overheads (126/112=12.5%, 64/56=14.3%), but with interleaving & decoder delays reduced from 5632 to 3104 bits (156 ms to 85 ms at 32 kbps). P300H P300 Series Modem Installation and Operating Handbook Page 27...
Page 28 RBS. [Async ESC Feature] & Aux Data Channel P300H P300 Series Modem Installation and Operating Handbook Page 28...
Page 29 Synchronous access to 8 kbps IDR ESC. With the Async ESC feature (standard on P300-IBS and above) async ESC access to the 8kbps IDR ESC is provided, giving up to a 9600 Baud async channel P300H P300 Series Modem Installation and Operating Handbook Page 29...
Page 30 Demodulator Rx carrier signal monitoring & level display (±5dB) 0 -10 V Analog output (Signal level, Eb/No or Rx offset frequency) Buffered constellation monitor port Sounder for audible feedback from keyboard Traffic Log Capacity Total 1000 entries P300H P300 Series Modem Installation and Operating Handbook Page 30...
Page 31 Disable Reed-Solomon decoder corrections Alarm Relays 3 independent changeover contacts: Prompt Unit fault Prompt Traffic fault (Tx or Rx) Deferred Alarm (backward alarm, BER or Eb/No below user set threshold) P300H P300 Series Modem Installation and Operating Handbook Page 31...
Page 32 Rx: 15V or 24V at 500mA FSK Communications P310: Option for duplex FSK Communication with Paradise BUCs (P314). Provides control of BUC from modem front panel or by remote M&C via normal modem M&C ports. Includes control and monitoring of all BUC parameters available over FSK, and option to provide closed loop power control to BUC flange.
Page 33 Environmental Operating temperature range 0 to 50C Supporting Products The P300 Series are supported by the following products: P500 series 1:8 redundancy controller, which includes the facility to mix electrical interfaces within a redundancy group Alphawave CAM Monitor & Control software allows monitor and control of many different products (including non-Paradise products).
Page 34 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 Series Modem Installation and Operating Handbook Page 34...
Page 35 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 Series Modem Installation and Operating Handbook Page 35...
Page 36 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 Series Modem Installation and Operating Handbook Page 36...
Page 37 1E-7 RS = Concatenated Reed-Solomon Outer Coding (219,201) 1E-8 TCM no RS TCM plus RS 1E-9 Eb/No in dB P300 Modem Series, Error Probability versus Eb/No - 8PSK/TCM with/without Reed-Solomon P300H P300 Series Modem Installation and Operating Handbook Page 37...
Page 38 P300 Modem Series, Error Probability versus Eb/No - Turbo Codec P300H P300 Series Modem Installation and Operating Handbook Page 38...
Page 39: Installation And Configuration
Once unpacked, visually inspect the unit for damage. The shipping carton in which the Modem is shipped has been used by Paradise to ship our products worldwide for a number of years. It has shown, through experience, that it can withstand very rough handling. Therefore, if the equipment received is damaged, there can be no doubt that it has been subjected to abnormal or abusive treatment - please file a claim with the Carrier immediately and then contact Paradise Datacom.
Page 40: Menu System
Make use of the Rx=Tx option, it’s great, it cuts down configuration errors, and generally makes life easy. At least read the note on Rx=Tx in section 6.7 on page 86 so you know what you are missing ! P300H P300 Series Modem Installation and Operating Handbook Page 40...
Page 41: Menu Structure Diagrams
For example the option to raise a deferred alarm if the distant Eb/No falls below a certain level (shown on the diagrams as [DISTANT Eb/No]-Option:AUPC) requires the AUPC feature to be available and switched on before the menu option is shown. P300H P300 Series Modem Installation and Operating Handbook Page 41...
Page 42: Menu Structure Sheet 1 / 7 (Main: Status, Change)
6.2.1 Menu Structure Sheet 1 / 7 (Main: Status, Change) P300H P300 Series Modem Installation and Operating Handbook Page 42...
Page 43: Full Menu Structure Sheet 2 / 7 (Main: Monitor, Info)
6.2.2 Full Menu Structure Sheet 2 / 7 (Main: Monitor, Info) P300H P300 Series Modem Installation and Operating Handbook Page 43...
Page 44: Full Menu Structure Sheet 3 / 7 (Main: Log, Test, Setup, Action, Help)
6.2.3 Full Menu Structure Sheet 3 / 7 (Main: Log, Test, Setup, Action, Help) P300H P300 Series Modem Installation and Operating Handbook Page 44...
Page 45: Full Menu Structure Sheet 4 / 7 (Main, Change, User-Opt, Operation)
6.2.4 Full Menu Structure Sheet 4 / 7 (Main, Change, User-Opt, Operation) P300H P300 Series Modem Installation and Operating Handbook Page 45...
Page 46: Full Menu Structure Sheet 5 / 7 (Change, Tx)
6.2.5 Full Menu Structure Sheet 5 / 7 (Change, Tx) P300H P300 Series Modem Installation and Operating Handbook Page 46...
Page 47: Full Menu Structure Sheet 6 / 6 (Change, Rx)
6.2.6 Full Menu Structure Sheet 6 / 6 (Change, Rx) P300H P300 Series Modem Installation and Operating Handbook Page 47...
Page 48: Full Menu Structure Sheet 7 / 7 (Change, Buc/Lnb)
6.2.7 Full Menu Structure Sheet 7 / 7 (Change, BUC/LNB) P300H P300 Series Modem Installation and Operating Handbook Page 48...
Page 49: Status Screen Display
Traffic Status Summary Screen (shown second above) when Status is selected from the main menu. The selection between screens is made under Change, User-Opt, Display. These screens are now each discussed in turn: P300H P300 Series Modem Installation and Operating Handbook Page 49...
Page 50 Check) Traf-Fault A Traffic Fault exists Traf-Warn A Traffic Warning exists Remote Remote M&C mode, no warnings or test modes active. Local Local mode, no warnings or test modes active. P300H P300 Series Modem Installation and Operating Handbook Page 50...
Page 51 If there is a receive traffic fault, then a more detailed two line description of the fault/warning replaces the status information (as opposed to the one line message on the Status Traffic Summary Screen). Pressing down again selects the Transmit Detailed Traffic Status. P300H P300 Series Modem Installation and Operating Handbook Page 51...
Page 52 Monitor/AGC option is fitted. From this screen the Down Arrow leads back to the selected Status screen. (Back to the selected Status Screen, `Config Summary` or `Tx & Rx Traffic Summary`) P300H P300 Series Modem Installation and Operating Handbook Page 52...
Page 53: Setup - Initial Configuration Menu
Change Screen (Remote M&C): Change limited as Remote M&C active ! Change: 1:Rem M&C 2:Time/Date Change Menu (remote M&C) Each of these options will be described in the following sections: P300H P300 Series Modem Installation and Operating Handbook Page 53...
Page 54: Change, Tx Menu
Closed Network, or whether Closed Net Plus ESC is required. Normal Closed Network adds no overhead to the data and is compatible with other closed network equipment such as the Paradise P200, and closed network equipment from other vendors.
Page 55: Change, Tx/Rx, Service, Closed Network
The modem operates without adding any overhead to the data, this is `normal` Closed Network mode. Normal Closed Network adds no overhead to the data and is compatible with other closed network equipment such as the Paradise P200, and closed network equipment from other vendors.
Page 56 ESC, lowering the total overhead marginally. See "Overhead Rates" in section 8.7.1 on page 147 for details of the overhead percentage requirements for differing mixes of main data and async ESC data rates. P300H P300 Series Modem Installation and Operating Handbook Page 56...
Page 57: Change, Tx/Rx, Baseband Menu
IDR frame, so that the distant receive equipment may arbitrarily re-order the timeslots. Refer to section 7.3.1 "Change, Tx/Rx, Baseband, Continuous, 2048k Menu (IDR)" on page 139 for the description of the dialogue in this case. P300H P300 Series Modem Installation and Operating Handbook Page 57...
Page 58: Change, Tx/Rx, Baseband, Drop/Insert Menu
17-11 means send in order 17, 16, 15, ...11 NOTE: In G.732 mode whilst TS0 can be dropped, it must always be replaced in TS0 at the distant end (otherwise there is the possibility of frame alignment ambiguity). P300H P300 Series Modem Installation and Operating Handbook Page 58...
Page 59 CAS. If selected, the terrestrial multiframe will be acquired, and CAS removed from/replaced into the Drop/Insert bearer. The CAS will be conveyed transparently from end to end of the link within IBS (or custom IBS) overheads. P300H P300 Series Modem Installation and Operating Handbook Page 59...
Page 60 RBS are replaced into the same relative positions within the terrestrial multiframe by the insert mux, in order to preserve the RBS. P300H P300 Series Modem Installation and Operating Handbook Page 60...
Page 61 Timeslot ID will not be maintained and the Modem will be compatible with other manufacturers equipment for these `Odd values of N`. This is the end of the Drop/Insert dialogue when in Closed Net Plus ESC, IBS or CUSTOM IBS modes P300H P300 Series Modem Installation and Operating Handbook Page 61...
Page 62: Change, Tx/Rx, Baseband, Other Menu
Closed Net Plus ESC, IBS or Custom IBS overhead is required in order to maintain the timeslot ID and hence keep the channels separate in order for this to function. Normal clocking selections are available. P300H P300 Series Modem Installation and Operating Handbook Page 62...
Page 63: 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 64 Clock again if there is one or the Internal 1PPM ref if not. So this option really is only of any practical use when the Rx Clocking is set to Satellite or Station Clock. P300H P300 Series Modem Installation and Operating Handbook Page 64...
Page 65: Change, Tx, Modulator Menu
None, Viterbi or Sequential at rate ½, ¾, or 8PSK: TCM only at rate See the OQPSK primer below, and also refer to Appendix E “Fault Mode 12" for interworking OQPSK between early and later P400 series modems. P300H P300 Series Modem Installation and Operating Handbook Page 65...
Page 66: Offset Qpsk (Oqpsk) Primer
¾ rate FEC (increasing the data rate by factors of 2 and 4/3 respectively). The operator is warned of unusual combinations of Modulation and FEC type/code rate when SETUP- CHECK is requested. P300H P300 Series Modem Installation and Operating Handbook Page 66...
Page 67 (which offer a better 7/8 rate performance at the cost of significant latency). If you’re stuck with a channel that can only accommodate 7/8 Rate FEC, then this will give you an extra dB over using Viterbi. P300H P300 Series Modem Installation and Operating Handbook Page 67...
Page 68: Change, Tx/Rx, Mod/Demod, Reed-Solomon Menu
Interleaving is usually of depth 4 or depth 8. The configuration menus are described in the following paragraphs. See also the applications section, para 8.4 "Choosing Optimum Custom RS N&k Values" on page 144 P300H P300 Series Modem Installation and Operating Handbook Page 68...
Page 69: Change, Tx/Rx, Mod/Demod, Scrambler Menu
The Scrambler selection is made from OFF, NORMAL, and CUSTOM. Turns off all scrambling, and whilst this may be used for testing or carrier line up, it is not normally used over satellite. P300H P300 Series Modem Installation and Operating Handbook Page 69...
Page 70 Refer also to section 8.9 on page 152 which describes in more detail the different scramblers, and interworking between manufacturers. The operator is warned of unusual scrambler settings when SETUP-CHECK is requested. P300H P300 Series Modem Installation and Operating Handbook Page 70...
Page 71: Change, Tx, Modulator, Carrier Menu
Change, Tx, Modulator, Power Menu (Terminal with BUC) If a Paradise BUC & FSK are fitted, but the modem / BUC are set in independent mode, then a third screen is displayed (similar to the 1st) from which the setting of the BUC attenuator may also be accessed by pressing the down key from the power level menu.
Page 72: Change, Tx/Rx, Modulator, Spectrum Invert Menu
FEC encoder to the modulator. The `Normal` option is compatible with other manufacturers BPSK equipment. The Invert option (ie reverse pairs of Tx symbols) is compatible with earlier Paradise products such as the P200 (which we consider to have the `correct` symbol pairing !). On the Rx path the symbol pairing is automatically determined, and so the Rx Spectrum Invert feature has no effect in BPSK.
Page 73: Change, Tx, Modulator, Aupc Mode Menu
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. P300H P300 Series Modem Installation and Operating Handbook Page 73...
Page 74: Change, Tx, Modulator, Aupc, Min Menu
6.6.23 Change, Tx, Modulator, AUPC, TOLERANCE Menu Set Eb/No tolerance before AUPC action: [±0.5dB] (0.1-25.0dB) ±??.?dB (Yes) Change, Tx, Modulator, AUPC, Tolerance Menu P300H P300 Series Modem Installation and Operating Handbook Page 74...
Page 75: Change, Tx, Modulator, Aupc, Carrier Lost Action Menu
The AUPC delta power It is reset to zero so the carrier returns to its nominal power. MAXIMUM The AUPC delta power increases to the maximum power limit as set on the AUPC Max positive delta power screen. P300H P300 Series Modem Installation and Operating Handbook Page 75...
Page 76: Change, Tx/Rx, Esc/Aux/Ba Menu
Rx fault status of this modem (saves external patching in non-multidestinational carriers). This option is on the Tx menu only and again is not shown in Closed Net Plus ESC mode. P300H P300 Series Modem Installation and Operating Handbook Page 76...
Page 77: Change, Tx/Rx, Esc/Aux/Ba, Define (Idr) Menu
Audio ESC V2 operates as normal, and the Aux port provides a 32kbps channel in V1. 32K IN V2 Audio ESC V1 operates as normal, and the Aux port provides a 32kbps channel in V2. P300H P300 Series Modem Installation and Operating Handbook Page 77...
Page 78: Change, Tx/Rx, Esc/Aux/Ba, Define (Ibs) Menu
HIGH RATE ASYNC The ESC Channel provides the `Paradise High Rate ESC`, which in a later menu may be configured to be compatible with earlier products such as the P230, P230D/I, and P1300/P1361 combination. This provides an async channel with maximum Baud rate approximately the terrestrial rate / 23 (eg usable rates of 2400 Baud at 64 kbps and 9600 Baud at 256 kbps).
Page 79 ESC Baud rate defined, then setting the ESC to All Avail maximises the proportion of the overhead available to the ESC, and lowers the overhead addition to the minimum possible. P300H P300 Series Modem Installation and Operating Handbook Page 79...
Page 80: Custom Ibs Overhead Allocation
TS32 bit 4 is 1/32nd of the overhead and is normally used for the Satellite TS32 Multiframe but is spare if Custom IBS mode without a TS32 multiframe is selected. This bit can only be allocated to the ESC. P300H P300 Series Modem Installation and Operating Handbook Page 80...
Page 81: Change, Tx/Rx, Esc/Aux/Ba, Async Esc Menu
M&C configuration. When the ESC port is configured as the remote M&C port, [=] appears, when not equal ] appears. … P300H P300 Series Modem Installation and Operating Handbook Page 81...
Page 82: Change, Tx/Rx, Esc/Aux/Ba, Config Async, Baud Rate Menu
If the remote M&C Baud rate exceeds the maximum continuous ESC rate, then the following warning will be issued, although the copying of the parameters will go ahead. NOTE: ESC channel not guaranteed above 2962 Baud (YES) Change, Tx/Rx, ESC/Aux/BA, Set as Remote Warning Menu P300H P300 Series Modem Installation and Operating Handbook Page 82...
Page 83: Change, Tx/Rx, Esc/Aux/Ba, Interfaces Menu
Tx ESC channel and back via the satellite link. Aux Interface Following the ESC interface selection the Aux port may be configured (self explanatory): Aux Interface: [RS232] 1=RS232 2=RS422 Change, Tx/Rx, ESC/Aux/BA, Cfg Interfaces, Aux Menu P300H P300 Series Modem Installation and Operating Handbook Page 83...
Page 84: Change, Tx/Rx, Esc/Aux/Ba, Audio Levels Menu
0.1dB steps, rapidly in 0.5dB steps. YES must be pressed to exit the screen otherwise the previous values will be restored. P300H P300 Series Modem Installation and Operating Handbook Page 84...
Page 85: Change, Tx/Rx, Esc/Aux/Ba, Backward Alarms Menu
All four alarms represent the internal Rx Fail signal. Used in non multidestinational working, external backward alarm inputs are ignored. In non multidestinational operation, the choice between the third and fourth options is down to operator preference or station policy. P300H P300 Series Modem Installation and Operating Handbook Page 85...
Page 86: Change, Rx Menu
The Demod menu provides access to the independent selection of IF Frequency, and demod Sweep Width control Note: If Rx=Tx is enabled, and the Tx Service is set to Off, then only the Rx=Tx selection will be the only one displayed. P300H P300 Series Modem Installation and Operating Handbook Page 86...
Page 87: Change, Rx, Service Menu
See the applications section, para 8.3 "Partial Insert and Multidestinational Working" on page 143 for a discussion of this facility. If All is selected, the dialogue continues as with the Drop Mux on the Tx path. P300H P300 Series Modem Installation and Operating Handbook Page 87...
Page 88 Baseband menu continues as with the Drop Mux option on the Change, Tx, Baseband menu. The total number of timeslots inserted must match the number of 64kbps channels selected for this destination on the `Sat TS` screen above. P300H P300 Series Modem Installation and Operating Handbook Page 88...
Page 89: Change, Rx, Buffer / Clocking Menu
IF is tuned to 180MHz. However if this option is used please be aware that the transmit IF spectrum purity is entirely dependent upon the quality (phase noise performance) of the supplied reference. P300H P300 Series Modem Installation and Operating Handbook Page 89...
Page 90: Change, Rx, Buffer / Clocking, Rx Clock Menu
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 P300H P300 Series Modem Installation and Operating Handbook Page 90...
Page 91 `Ext Tx Clock In` fail the PLL sources the clock, locked first to the Station Clock (if available) or the recovered satellite clock (while the demodulator remains locked), and finally the internal frequency reference in order to maintain the Rx traffic. P300H P300 Series Modem Installation and Operating Handbook Page 91...
Page 92: Change, Rx, Buffer / Clocking, Buffer Size Menu
With typical earth station clock accuracies, buffers never need be larger than approximately 16ms. The buffer can be manually centred by selecting ACTIONS, BUFFER CENTRE. P300H P300 Series Modem Installation and Operating Handbook Page 92...
Page 93: Change, Rx, Demod' Menu
6.7.12 Change, Rx, Demod’ SCRAMBLER Menu See Change, Tx/Rx, Modulator, Scrambler Menu on page 69 6.7.13 Change, Rx, Demod’ SPECTRUM INVERT Menu See Change, Tx/Rx, Modulator, Spectrum Invert Menu on page 72 P300H P300 Series Modem Installation and Operating Handbook Page 93...
Page 94: Change, Rx, Demod' Sweep Menu
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: P300H P300 Series Modem Installation and Operating Handbook Page 94...
Page 95: Change, Rx, Demod' Aupc Menu
Note: Temporarily setting Rx=Tx is a convenient way of copying the Tx configuration to the Rx as when disabled again the Rx path keeps the Tx values, and does not return to the old Rx values. P300H P300 Series Modem Installation and Operating Handbook Page 95...
Page 96: Change, Terr-Intfc Menu
G.703 unless it is an E1 G.703 option where the switch on the option card is set for 75 in which case the interface is on the BNC connectors fitted as part of this option. P300H P300 Series Modem Installation and Operating Handbook Page 96...
Page 97 This screen allows the signal to be pre-compensated to cope with differing lengths of standard `ABAM` cable. We would suggest you select option 1, less than 133 feet by default (no compensation). P300H P300 Series Modem Installation and Operating Handbook Page 97...
Page 98: Change, Terr-Intfc, Control Lines
These screens are used for interfaces which have interface specific requirements such as the 64kbps G.703 interface. With the standard P1440 interface this option is not shown on the Change, Terr-Intfc menu. P300H P300 Series Modem Installation and Operating Handbook Page 98...
Page 99: Change, Rem-M&C Menu
The subsequent timeout menu is as follows, its function is described above: Rem M&C timeout before user can take local control: [120s] (1-255secs) ???s (YES) Service, Factory Parameters, Remote M&C Timeout Menu P300H P300 Series Modem Installation and Operating Handbook Page 99...
Page 100: Change, Rem-M&C, Configure Menu
Baud Rates for each protocol. ADDRESS The bus address must be specified. The valid range for the Paradise / FDC protocol is 1-255, for the SA-bus protocol the valid range of address is 49 to 111 (31H to 6FH).
Page 101: Change, User-Opt Menu
The operator has control over may parameters which are the subject of either personal or company preference. A single menu choice DEFAULT ALL resets these to the Paradise Defaults which are listed in the following paragraphs along with each parameter.
Page 102: Change, User-Opt, Operation, Actions Menu
(Eutelsat EESS 501, SMS). ab=11 The `a` and `b` bits of the `abcd` signalling nibbles for the inserted timeslots are forced to a one. P300H P300 Series Modem Installation and Operating Handbook Page 102...
Page 103: Change, User-Opt, Operation, Terrestrial Menu
ITU G.704, and force a re-acquisition of the terrestrial Drop/Insert frame sync if CRC sync cannot be achieved within 8ms. Options available are Normal or Reacquire frame if CRC sync lost. Default: Normal. P300H P300 Series Modem Installation and Operating Handbook Page 103...
Page 104: Change, User-Opt, Operation, Satellite Menu
TS32 multiframe to identify the carrier and the earth station. These were named Station ID, Carrier ID & Spare ID. More recent issues just say "reserved for uses such as..". This options allows these P300H P300 Series Modem Installation and Operating Handbook Page 104...
Page 105: Change, User-Opt, Operation, Terr/Sat Menu
Refer to section 7.2.1 "Change, Tx/Rx, Baseband, Continuous, 2048k Menu (IBS)" on page 137 for further information on operation in this mode. Options are Transparent or Fix High. Default: Fix High. P300H P300 Series Modem Installation and Operating Handbook Page 105...
Page 106: Change, User-Opt, Operation, Alarms Menu
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 107: 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. The product is Year 2000 compliant ! P300H P300 Series Modem Installation and Operating Handbook Page 107...
Page 108: Change, Buc/Lnb Menu
Options for BUC Type, DC & References, & BUC Control are only offered on L-Band modems. BUC Control is offered subject to the BUC Type and the Modem/BUC control mode selected. Each option is defined in the following paragraphs. P300H P300 Series Modem Installation and Operating Handbook Page 108...
Page 109: Change, Buc/Lnb, Tx/Buc, Buc Type Menu
Options other than None or Other are only displayed if the FSK communications option is present within the P310, and refer to standard Paradise BUC’s (with which the modem can communicate by FSK). If you are using a non Paradise BUC, then please select Other and manually configure the BUC parameters.
Page 110: Change, Buc/Lnb, Tx/Buc, Dc & References Menu
Two subsequent screens allow the user to independently set the low and high current alarm thresholds. The current being drawn by the BUC can be monitored from the Monitor, BUC menu’s P300H P300 Series Modem Installation and Operating Handbook Page 110...
Page 111: Change, Buc/Lnb, Tx/Buc, Shf Frequency Menu
This screen is not available on the L-Band modem with FSK when the Tx BUC Type has been set to a known Paradise BUC and the modem / BUC configured to operate as a Terminal, as here the modem / BUC work in a closed loop mode and compensate for whatever the system gain varies to be, in order to keep the power measured at the BUC constant.
Page 112: Change, Buc/Lnb, Tx/Buc, Buc Control Menu
This screen is only available on the P310 L-Band modem if the BUC Type has been set to a known Paradise BUC, the modem has the FSK communications option, and the Modem/BUC are set in Independent mode. In the alternative Terminal mode (with Closed loop power control to the BUC flange) the BUC is kept On and the BUC attenuator automatically controlled.
Page 113: Change, Buc/Lnb, Rx/Lnb Menu
SHF frequency. Note however that with the LNB Type set to None or Other, there is no way to manually enter a SHF offset which uses a High Side P300H P300 Series Modem Installation and Operating Handbook Page 113...
Page 114: Change, Buc/Lnb, Rx/Lnb, Dc & References Menu
SHF frequency received would be LO - IF Frequency (unlike the situation where the modem is told it has a Std C band LNB, and knows that a high side LO is used). P300H P300 Series Modem Installation and Operating Handbook Page 114...
Page 115: Change, Buc/Lnb, Tune Ref Menu
Needless to say. Ensure whatever you are measuring the frequency with is itself calibrated, warmed up, and significantly exceeds the stability of the reference option fitted to the modem (viewable under Info, This Unit) P300H P300 Series Modem Installation and Operating Handbook Page 115...
Page 116: Monitor Menu
Drop/Insert bearers is in use. The display shows BER (source), and the source may be changed by pressing 1 or 2. The dialogue is exactly the same as described in section 6.10.4 on page 103 P300H P300 Series Modem Installation and Operating Handbook Page 116...
Page 117: Monitor, Carrier Id's Menu
Monitor, Distant Eb/No & BER Menu If the link is broken, or the AUPC cannot communicate with the distant end via the ESC channel, then both figures are replaced with `Unavail`. P300H P300 Series Modem Installation and Operating Handbook Page 117...
Page 118: Monitor, Aupc Menu
This may be either: None, Other, Std Ku, Ext Ku, Std C, INSAT C, or PALAPA C If the BUC is from Paradise Datacom and the modem is fitted with the FSK communication option, then significantly more information is available on this and subsequent screens. On this screen:...
Page 119: Info Menu
This may be either: None, Other, Std Ku, Ext Ku, Std C, INSAT C, or PALAPA C If the BUC is from Paradise Datacom and the modem is fitted with the FSK communication option, then more information is available on this and subsequent screens. On this screen: Software Ver: The version of software in the BUC.
Page 120: Log Menu
Finally, if AUPC is active (see AUPC in section 8.11.1 on page 154), another subsequent screen is offered: Autolog (Y/N): 1:AUPC Delta Power (Y) 2:Distant end Eb/No (N) Back Log Autolog, Measurements Menu (3:AUPC) P300H P300 Series Modem Installation and Operating Handbook Page 120...
Page 121 Please note that each data type logged uses up one log entry every Autolog period (ie the log capacity can be consumed quickly with multiple events logged at very regular intervals). P300H P300 Series Modem Installation and Operating Handbook Page 121...
Page 122: Test Menu
The Tx IF Level needs to be set to above -10dBm for the loopback to function reliably. Do NOT change the Tx IF Level for a loopback if the modem is still on satellite ! Cont’d..P300H P300 Series Modem Installation and Operating Handbook Page 122...
Page 123 This provides a loop of the Rx data after the deframer back into the framer. Tx input data is ignored, Rx traffic continues as normal. Incoming ESC & Aux channel data is not looped back to the remote site. P300H P300 Series Modem Installation and Operating Handbook Page 123...
Page 124: Test, Rf & Fec Menu
Should the internal temperature exceed the limits of 0C and 60C, then a Unit Fault / Prompt Alarm is activated. The Tx carrier is muted outside the operating temperature range. P300H P300 Series Modem Installation and Operating Handbook Page 124...
Page 125: Test, Int' Bert Menu
This disables the internal BER Tester, removing it from the channel in use, ie the Main, ESC, or Aux channel, restoring normal operation. P300H P300 Series Modem Installation and Operating Handbook Page 125...
Page 126: Test, Int' Bert, Off/Channel Menu
0.2% the main data channel rate. If the IDR Option is fitted (standard on P300-IDR and above) which provide a synchronous external Aux port, then the Aux channel may be set for sync channel and to use all P300H P300 Series Modem Installation and Operating Handbook Page 126...
Page 127 96kbps together with 16kbps ADPCM for the audio ESC's, it may provide all the normal IDR features, but with the second 32kbps audio slot free to configure as a 32kbps Aux channel for continuous BER testing. P300H P300 Series Modem Installation and Operating Handbook Page 127...
Page 128: Test, Int' Bert, Pattern Menu
MANUAL Manual mode allows the operator to manually start, stop & restart tests which may run for up to 27 hours (99,999 seconds), at which point the results are frozen. P300H P300 Series Modem Installation and Operating Handbook Page 128...
Page 129: Test, Int' Bert, Results Menu
BERT is `blind` for a small proportion of the time and some individual errors may not be counted. However the BER is 100% accurate because as well as counting Errors, the BERT also counts PRBS bits received, and calculates the BER as <Errors> / P300H P300 Series Modem Installation and Operating Handbook Page 129...
Page 130: Setup Menu
This resets the counts of underflows and overflows on the Status status screens 1:1 GIVE AWAY When two Modem's are configured as a 1:1 pair, this can be selected on the on- line unit, to handover control to the off-line unit. P300H P300 Series Modem Installation and Operating Handbook Page 130...
Page 131: Help Menu
SERVICE MENU The service menu is available by selecting 0 from the main menu. It provides options not normally required when configuring the Modem. Service: 1:User Parameters 2:Factory parameters Service Menu P300H P300 Series Modem Installation and Operating Handbook Page 131...
Page 132: Service, User Parameters Menu
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). The unlock code is displayed before the keyboard is locked on the Modem, as we had quite a few calls to the technical support line which start off “I’ve just...
Page 133: Menu Screens For Specialist Options
(TS32 bit 4) to carry ESC information. The disadvantage of operating without a TS32 Multiframe is that the synchronous IBS scrambler cannot be used, and the `Normal` scrambler option selects P300H P300 Series Modem Installation and Operating Handbook Page 133...
Page 134 The following two examples explain typical scenarios: 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 P300H P300 Series Modem Installation and Operating Handbook Page 134...
Page 135: Change, Tx/Rx, Service, Custom, Idr Menu
Change, Tx/Rx, Service, Custom, IDR, Overhead Menu If 16k ADPCM MODES are selected the following further prompt appears IDR o/h: [?] 1=96k:2x16k-Audio+32k-BER 2=64k:2x16k-Audio only Change, Tx/Rx, Service, Custom, IDR, O/H 16k Menu P300H P300 Series Modem Installation and Operating Handbook Page 135...
Page 136 64kbps comprising 32kbps for [FAS + Back Alarms + 8K sync ESC channel] plus 32kbps containing the two 16kbps ADPCM audio channels. The final 32kbps defined for Audio ESC channel 2 is not transmitted. P300H P300 Series Modem Installation and Operating Handbook Page 136...
Page 137: Ibs/Sms Operation With 2048Kbps Continuous Data
If selected, the terrestrial multiframe will be acquired, and CAS removed from/replaced into the Drop/Insert bearer. The CAS will be conveyed transparently from end to end of the link within IBS (or Custom IBS) overheads. P300H P300 Series Modem Installation and Operating Handbook Page 137...
Page 138 The Modem hardware is capable of duplication and omission of timeslots, although for simplicity the operator interface (described above) does not allow such selections. If this is a requirement, please contact the factory to discuss your needs. P300H P300 Series Modem Installation and Operating Handbook Page 138...
Page 139: Custom Idr Operation With 2048Kbps Continuous Data
IBS G.732 re-ordering (as described in the previous section for IBS G.732 operation on page 138) which allows the timeslots to be arbitrarily re-ordered prior feeding to the terrestrial output. P300H P300 Series Modem Installation and Operating Handbook Page 139...
Page 140: Application Notes
With typical earth station clock accuracies, buffers never need be larger than approximately 16ms. P300H P300 Series Modem Installation and Operating Handbook Page 140...
Page 141: Determining Clocking Schemes And Buffer Size
Rx Clock = Station. If there is no station clock then set Rx Clock = Tx Clk In (which as the Tx clock comes from the network, is presumably derived from the same master clock which clocks the network). Set the Tx Clock = Tx Clk In. Other clock modes P300H P300 Series Modem Installation and Operating Handbook Page 141...
Page 142: Determining Buffer Size
So using the example figures above gives 0.00898 seconds, so 9ms is required to absorb the plesiochronous effects. To this you must add any Doppler requirement (ie 2ms for each satellite hop). P300H P300 Series Modem Installation and Operating Handbook Page 142...
Page 143: Partial Insert And Multidestinational Working
Partial Insert becomes mandatory for multidestinational working when the total receive data at any one destination exceeds the capacity of the PCM bearers. One final note: The P300 Series can provide multidestinational operation at aggregate carrier rates below 1544 kbps using the IBS overhead, but with four backward alarms. So multidestinational working down to 64kbps between nodes become practical (ie you don't have to use the 96kbps IDR overhead on the links to get multidestinational backward alarm facilities).
Page 144: Choosing Optimum Custom Values Of Rs N&K
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`. P300H P300 Series Modem Installation and Operating Handbook Page 144...
Page 145: Notes On Data Rates & Symbol Rates
Data Rate is 64kbps times the number of timeslots dropped/Inserted. As the P300 Series Modem use PSK (Phase Shift Keying) the Symbol Rate is the rate of phase changes on the I.F. signal. Each phase change represents a new symbol to the demodulator, and depending on the modulation scheme that symbol may convey one (BPSK), two (QPSK), or three (8PSK) bits of information.
Page 146: Determining Exact Maximum Esc Baud Rates
+ 8 + parity + stop), and 8888Baud with 10 Baud periods per character (eg start + 8 + stop), as used with Paradise & SA-bus M&C protocols (SA-bus is start + 7 + parity + stop = 10 Baud periods per character).
Page 147: Closed Network Plus Esc
1/Nth increments (eg 1/1=100%, ½=50%, 1/3=33%, 1/4=25% etc up to 1/256=0.39%) and so the modem must pick the appropriate value of N which provides at least the required async ESC Baud rate. P300H P300 Series Modem Installation and Operating Handbook Page 147...
Page 148: Closed Network Plus Esc Via The Custom Service Menu
ESC channel to cause a delay in transmission of up to 3 characters (as if they were `stuck in the pipe`), which only appear out of the ESC channel when `pushed through` by subsequent characters. This P300H P300 Series Modem Installation and Operating Handbook Page 148...
Page 149 `Delayed Character Mode` is generally not a show stopper, but can cause issues with packet based communications. At Paradise we have only been able to make the ESC channel enter this `delayed character mode` by setting up a pair of modems in intentionally mis-matched configurations. However, now we have investigated and understood the mechanism, we feel it is feasible that under repeated changes of configuration the ESC channel might enter this `delayed character mode` (although we can’t get it into this...
Page 150: Cross Reference To Sdm300 D/I & Framing Modes
(maintain), 2=Don't maintain". If you select Normal (maintain) the unit will provide TS identity maintenance for any value of N by using a CAS multiframe (Paradise proprietary). If you select Don't Maintain then the Modem will not use a CAS multiframe, and will be compatible with other manufacturer equipment with the same number of timeslots selected.
Page 151 T1_IBS: 1544kbps in the same bandwidth as Normal 1536kbps IBS This is the standard INTELSAT definition for non Drop/Insert 1544kbps over IBS. 1. Select Change, Tx, Service, IBS/SMS 2. Select Change, Tx, Baseband, Continuous, 1544000bps P300H P300 Series Modem Installation and Operating Handbook Page 151...
Page 152: Scramblers
INTELSAT V.35 implementations, but in order to maintain backwards compatibility they support their original V.35 attempts as well. To maximise compatibility with other manufactures equipment, in addition to both INTELSAT and CCITT, Paradise modems implement two of these other V.35 schemes, these modes are referred to as "FDC" and "Linkabit".
Page 153: Interworking Different Manufacturers Equipment
Sequential requires P300 Rx spectrum invert in BPSK and both Tx & Rx spectrum invert in QPSK. See Appendix E: FaultMode=11 A `compatibility document` which describes interworking tests between the Paradise P300/P400 Modems and other manufacturers modems is available on request. P300H...
Page 154: Introduction To Aupc (Automatic Uplink Power Control)
(which is carried over the satellite multiplexed with the main data channel). For AUPC to operate an async ESC channel must be defined, and on the P300 Series this is available in Closed Network (Closed Net Plus ESC), IBS/SMS and IDR modes.
Page 155 - Limit only: Power economy: The power will not increase, but it will reduce if there are any especially good atmospheric conditions that allow less power to achieve the target Eb/No. P300H P300 Series Modem Installation and Operating Handbook Page 155...
Page 156 33% of the ESC channel bandwidth, then it uses only the proportion of bandwidth required for a 1Hz update rate. The 33% bandwidth is used by interleaving the requests P300H P300 Series Modem Installation and Operating Handbook Page 156...
Page 157: Configuring Aupc For Operation
Setting the ESC for 19200 Baud will provide a very high update rate for the Eb/No monitoring, by having enough bandwidth so that the maximum 33% it uses in this mode can provide at least a 1Hz update rate. P300H P300 Series Modem Installation and Operating Handbook Page 157...
Page 158 Eb/No within the parameters you have set. Logging the AUPC delta power allow you to, if questioned, be able to specify to the satellite operator the exact power you were transmitting throughout the day (or at a specific time in question). P300H P300 Series Modem Installation and Operating Handbook Page 158...
Page 159: Tutorial On Carrier/Noise & Eb/No Measurements
RS Decoder E / N is higher than E / N as the same power is referenced to a lower bit rate. Allowing for the change in bit rate in the RS Decoder gives: P300H P300 Series Modem Installation and Operating Handbook Page 159...
Page 160: Practical Implications Of Displayed Eb/No
E / N you do of course recover the same BER. Framing therefore does not degrade the BER for a stated E / N , but it does require more power (and bandwidth) to achieve the same E / N . P300H P300 Series Modem Installation and Operating Handbook Page 160...
Page 162: Tables To Convert (C+N)/N To Eb/No
Rate TCM FEC, & RS=(219,201,9) (C+N)/N= C/N= 8PSK so 2/3 Rate FEC, so RS Code (219,201,9) so 8.4dB 7.72dB subtract 4.77dB add 1.76dB add 0.37dB Measure Look up Calculate Eb/No = C/N - 2.64dB P300H P300 Series Modem Installation and Operating Handbook Page 162...
Page 163: 1 For 1 Operation
OK, (but only if the on-line unit has now failed, otherwise it would be an unnecessary changeover). P300H P300 Series Modem Installation and Operating Handbook Page 163...
Page 164: Practical 1 For 1 Implementation
5. Connect the data interfaces in parallel, and configure the two units alike. Suitable adapter cables are available from Paradise for all the standard interfaces. 6. Connect the two transmit IF ports to the input ports of a suitable power splitter/combiner, of the...
Page 165: Boot Code Operation
Waiting for flash memory to Erase / Boot, Erase Wait screen When the Flash has erased (which takes approximately 30 seconds) the screen changes to: P300H P300 Series Modem Installation and Operating Handbook Page 165...
Page 166: Other Boot Code Options
Reduce the functionality to P300-VSAT level (from a higher level only) Reduce the functionality to P300-IBS level (from a higher level only) Reduce the functionality to P300-IDR level (from a higher level only) P300H P300 Series Modem Installation and Operating Handbook Page 166...
Page 167: Appendix A: Data Interface Information
RS422, V.35, RS232 and G.703. IT IS POSSIBLE TO FIT OTHER INTERFACES, and in fact the whole Paradise P14xx range can be utilised in the P300 series modem. However, prior to fitting another interface the case must be opened, the standard interface `snapped off` from the main PCB, and a 48 pin connector fitted to the main PCB to accept the plug in cards.
Page 168: P1440 In Rs422 Mode
P1440 IN RS422 MODE The P1440 is the standard interface supplied with the P300 Series 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...
Page 169: P1440 In V.35 Mode
P1440 IN V.35 MODE The P1440 is the standard interface supplied with the P300 Series 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...
Page 170: P1440 In Rs232 Mode
P1440 IN RS232 MODE The P1440 is the standard interface supplied with the P300 Series 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...
Page 171: P1440 In G.703 Mode
P1440 IN G.703 MODE If the G.703 option is fitted to the P300 Series 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.
Page 172 (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. P300H P300 Series Modem Installation and Operating Handbook Page 172...
Page 173: P1440 In X.21 Mode
P1440 IN X.21 MODE The P300 Series 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. With the use of the appropriate adaptor lead (to convert to the X.21 standard 15 pin D connector), a full X.21 DCE or DTE interface is available.
Page 174 `Device (DTE) Ready In` line (TR), set this to Ignore. It is also possible to configure the Tx carrier to be switched on and off by the `Sig’ Valid In` line (I) by selecting Change, Tx, Modulator, Carrier, RTS- Controlled. P300H P300 Series Modem Installation and Operating Handbook Page 174...
Page 175: Mil-Std-188-114A Interface
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 beyond the P300 Series operating range, and also is not supported. A few notes from MIL-STD-188-114A “Connectors, pin assignments and communication protocols are not standardised in this MIL-STD...
Page 176: P1451 Eurocom D/1 `D` & `G` Plus Multi-Standard Interface
J4 (exactly as per the P1440) in order for RS422, V.35 and RS232 modes to work. Equipment is supplied with the header fitted, but be aware of this if ever removing a G.703 option card. P300H P300 Series Modem Installation and Operating Handbook Page 176...
Page 177 If repeated `Data Marginal` alarms occur then it is likely the Tx clock and data are not from the same clock course and are `slipping past` each other. P300H P300 Series Modem Installation and Operating Handbook Page 177...
Page 178 This provides protection by ensuring the signal levels remain close to ground potential (as might happen if both inputs and outputs were floating), but avoid any ground currents between distant locations (as might happen if both inputs and outputs were grounded). P300H P300 Series Modem Installation and Operating Handbook Page 178...
Page 179: Appendix B: Modem Connector Pinouts
- to modem RX-A Rx. data * Pins 1 & 5 are both grounded on the modem (ie Shield and Ground are interchangeable). See also the “M&C Appnote” available from www.paradisedata.com. P300H P300 Series Modem Installation and Operating Handbook Page 179...
Page 180: Interconnecting Devices Using Rs485
`L`). The 10 connector `local RS485 bus` daisy-chain cable used in a 1:N switch to connect a backup P300, the P500 `RS485 Out` port, and a further 8 P300's could be specified as: “A + 50cm + E + 8 x (30cm + A)”. P300H P300 Series Modem Installation and Operating Handbook Page 180...
Page 181: 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 182: Alarms & Agc Connector
(ie non-energised) alarm state. Note: The function of these relays can be changed. See “Relay Mode” in Appendix E: Customer Specific Features on page 201 for a description. P300H P300 Series Modem Installation and Operating Handbook Page 182...
Page 183: Async Esc Connector
This provides a RS422 compatible station clock in addition to the unbalanced 75 station clock BNC connector. See the menu dialogue in section 6.7.4 on page 89 For a full description of this port. P300H P300 Series Modem Installation and Operating Handbook Page 183...
Page 184 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 185: Esc/Aux & Backward Alarms Connector
In IDR modes this port provides access to the 8kbps IDR ESC channel. This can either by synchronous at 8kbps, or (if the Async ESC feature is available) asynchronous at up to 4800 or 9600 Baud. P300H P300 Series Modem Installation and Operating Handbook Page 185...
Page 186 32kbps ADPCM audio channels. Typically this would be used synchronously, but if required it could be used asynchronously & oversampled giving maximum baud rates of approx 9600 Baud (in place of one audio channel) or 19200 Baud (in place of both Audio channels). P300H P300 Series Modem Installation and Operating Handbook Page 186...
Page 187 In IDR modes these are used to access the IDR Audio ESC channels. One or both Audio ESC's may be dropped in favour of 32 or 64kbps access to the channel by the Aux port. P300H P300 Series Modem Installation and Operating Handbook Page 187...
Page 188 For multidestinational IBS carriers it is possible to operate the P300 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. P300H P300 Series Modem Installation and Operating Handbook Page 188...
Page 189: Appendix C: Upgrade Information
Upgrading a P300 Series modem may then involve the entering of a `Feature Code` into the front panel, or the addition of one of more of the optional hardware items listed above in addition to entering of a `Feature Code` into the front panel.
Page 190: Appendix C1: Modem Capabilities & Upgrades
Inhibit on recent software, so if no message is shown do not assume an upgrade is not available. To determine the hardware capability of any P300 Series Modem see “Features: Hardware” in Appendix C2 which follows immediately. Any feature for which the modem Hardware is already present can be added by a simple `Feature Code` upgrade from the front panel.
Page 191 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 192 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 193 A * in the `Letter` column indicates these features require additional hardware to be fitted (eg small PCB or `Chip`). All Other features may be added simply by entering a `Feature Code`. P300H P300 Series Modem Installation and Operating Handbook Page 193...
Page 194: Appendix C3: Features On Demo Expire Soon
All P300 Series modems have this asymmetric loop timing facility. APPENDIX C5: UPGRADE AVAILABLE Again this section is not applicable to the P300 series modems. APPENDIX C6: FEATURES NOT AVAILABLE You have been directed to this appendix by a message on the equipment display, as the unit has detected it has been configured to use features which it cannot provide.
Page 195: Appendix D: Remote M&C
`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. Note that this applies on to `Body` characters, there are no such constraints on the other characters in the message.
Page 196: Message Structure
ETX: The fixed character 03H The Paradise / FDC protocol supported by the P4xx series of Modems is a slightly enhanced version, which is backwards compatible with the previous version. The enhancement is to add an `extended ACK` message (which the Master specifically requests instead of the original `ACK`), that includes the instruction code of the message it is ACKing.
Page 197: 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 Series Modem Installation and Operating Handbook...
Page 198: List Of All Remote M&C Messages
The test configuration of the unit, loopbacks, PRBS tester configuration, test functions (CW, alt 1,0, RS decoder disable) UnitTestRd V0.61 from unit UnitTestQry Status UnitTestWr V0.61 to unit (ack) Change P300H P300 Series Modem Installation and Operating Handbook Page 198...
Page 199 (address 0), and the TimeDateRd probably used on TimeDateRd V0.88 from unit TimeDateQry Status status screens to display the current unit time to compare log entries to etc. TimeDateWr V0.88 to unit (ack) Change P300H P300 Series Modem Installation and Operating Handbook Page 199...
Page 200 Build applicable to all Q480 boards (ID_Dig=1, all of which have 8M code storage) with any IFU, OR a Q460 board (ID_Dig=0) modified to have 8M code storage (Boot_Code will be V2.x for 8M) fitted with any IFU P300 build P300vxxx Build applicable to all P300's P300H P300 Series Modem Installation and Operating Handbook Page 200...
Page 201: Appendix E: Customer Specific Features
APPENDIX E: CUSTOMER SPECIFIC FEATURES This appendix lists the customer specific options available on the P300 Series Modems: Refer to the Change, User-Opt, Operation menu, section 6.10.8 on page 106 for explanations of how to use these parameters: RELAY MODE SETTING Default (normal) relay operation.
Page 202: Fault Mode Setting
INTELSAT mask (DC - 1kHz), although at the cost of a degraded BER in normal operating conditions (BER is degraded by up to 1dB compared to `Normal` mode). P300H P300 Series Modem Installation and Operating Handbook Page 202...
Page 203 1 for 1 and data `Y` cables along the entire ships length. Instead co-locate the modems, keep the 1 for 1 cable and data `Y` cable short, and run the modem IF along the length of the ship. If the P300H P300 Series Modem Installation and Operating Handbook Page 203...
Page 204 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 205: Uncommitted Dac Output Control
In response to customer requests for a finer resolution signal level indicator. Scaled at 3.33V per 10dB, with extremes of 0V=--60dBm and 10V=-30dBm and a 0.1dB resolution. This signal is forced to 0V when the demod is unlocked. P300H P300 Series Modem Installation and Operating Handbook Page 205...
Page 206 Practically it limits to between the upper and lower AUPC delta limits set by the operator (ie although scaled to ±25dB, it may practically vary only to +3 -1dB if those are the upper and lower AUPC delta limits set). 6-15 Undefined at present P300H P300 Series Modem Installation and Operating Handbook Page 206...
Page 207: Appendix F: Framing And Drop/Insert Overview
& 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, P300H P300 Series Modem Installation and Operating Handbook Page 207...
Page 208 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. P300H P300 Series Modem Installation and Operating Handbook Page 208...
Page 209: Implementation Of Timeslot Id Maintenance
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. P300H P300 Series Modem Installation and Operating Handbook Page 209...
Page 210: Signalling Systems Introduction: Ccs, Cas & Rbs
(so in T1-D4 for example the timeslots containing the RBS are placed in frames 6 & 12 of the terrestrial multiframe). P300H P300 Series Modem Installation and Operating Handbook Page 210...
Page 211: Cas Multiframe
TS 32 CAS = 8 TS 32 TS 32 TS 32 CAS = 8 CAS = 24 CAS = 24 TS 32 CAS = 16 TS 32 CAS = 8 P300H P300 Series Modem Installation and Operating Handbook Page 211...
Page 212 * These are the `Odd values of N` for which the Timeslot ID cannot be maintained by the TS 32 Multiframe. + N=32 is a special case normally handled as unframed 2048kbps (ie no Drop/Insert) or 1920/1984kbps (D/I with N=30/31) P300H P300 Series Modem Installation and Operating Handbook Page 212...
Page 213: Idr Framing
All normal IDR facilities plus a 32kbps Aux channel in the normal 96kbps overhead (which allows an internal or external PRBS test to run in parallel with the traffic to monitor the service quality) Reduced IDR facilities with 64kbps or 32kbps overhead. P300H P300 Series Modem Installation and Operating Handbook Page 213...
Page 214: Appendix G: Fault Messages And Action Table
WRITE DOWN the EXACT TEXT and call us for support. Finally, many messages also show “ R EAD” or “ N ote” and display further information if the down arrow is pressed, this is usually worth reading ! P300H P300 Series Modem Installation and Operating Handbook Page 214...
Page 215 BUC set for a different address has been installed BUC Fault: Outside operating temperature The Modem is configured to operate with a Paradise BUC. When the Modem reads the BUC range (now xx) temperature by FSK and the BUC is outside it’s operating temperature.
Page 216 Other BUC Fault: PLL in Block UpConverter lock fail The Modem is configured to operate with a Paradise BUCand the PLL generating the SHFcarrier in (10M ref' to BUC: On) the BUC has failed. The state of the reference feed to the BUC is also reported.
Page 217 G.732 mode and CAS signalling has been selected (or 2048k IBS G.732 0% overhead mode with Note 1 CAS is enabled). Check that a CAS multiframe is present on the PCM signal applied to the modem (ie terrestrial TS16 contains the 16 frame multiframe sequence). P300H P300 Series Installation and Operating Handbook Page 217...
Page 218 The Modem is configured to operate with a BUC and the modems DC supply to the BUC has been activated, but the DC switch indicates either an open or short circuit. P300H P300 Series Installation and Operating Handbook Page 218...
Page 219 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). P300H P300 Series Installation and Operating Handbook Page 219...
Page 220 Tx Warn: BUC Mute as Ref settles <2Min The Modem is configured to operate with a Paradise BUC and to supply a 10MHz reference `up the coax`. From a cold start the modem will switch of the BUC Tx output for 2 minutes until the internal reference has settled to avoid bringing up carriers off frequency.
Page 221 Reed-Solomon De-interleaver cannot find sync with the decoded data. Check the RS de-interleaving depth, then the values of `n` and `k`(use Info, View Config, Rx). On Non-Paradise Tx modems, check the V.35 scrambler is not enabled in addition to the Reed-Solomon scrambler.
Page 222 The <line> switching off may be user set to cause this fault or be ignored (Change, Terr-Int, Control Lines). See note 5. P300H P300 Series Installation and Operating Handbook Page 222...
Page 223 1PPM clock, if it is has been told a station clock is available. (Change, Rx, Clock/Buff, Station Clock Input). P300H P300 Series Installation and Operating Handbook Page 223...
Page 224 Refer also to the description of the dialogue under (Change, Rx, Buff/Clk, Rx Clock) to determine which signal the PLL uses as a backup clock. P300H P300 Series Installation and Operating Handbook Page 224...
Page 225 The Receive Eb/No (derived from the Carrier to noise ratio) is worse than the user threshold set for a deferred alarm (Change, User-Opt, Thresholds, Eb/No). This may be used as an advance warning of service degradation. P300H P300 Series Installation and Operating Handbook Page 225...
Page 226 Rx Warn: Insert mux sig' FIFO slip The FIFO which carries the CAS signalling from the Doppler Buffer to the Insert Mux has slipped (full or empty). This should never occur in operation (contact factory). P300H P300 Series Installation and Operating Handbook Page 226...
Page 227 Insert Mux, either when the Insert Mux is generating the bearer, or when the Rx path is receiving an independent 2M stream which contain a CAS multiframe. In these two circumstances the CAS-MF backward alarm is sent (TE), in all other circumstance the TS0 backward alarm is sent (TB). P300H P300 Series Installation and Operating Handbook Page 227...
Page 228 Baseband, Insert dialogue), and selecting Rx Clock as “Satellite” (Change, Rx, Buff/Clock, Gen’ Bearer Clock ). If the downstream equipment requires a terrestrial TS16 Multiframe, you must configure the modem to use CAS, so the generated bearer has a TS16 multiframe. P300H P300 Series Installation and Operating Handbook Page 228...

This manual is also suitable for:

P310 P310-vsat P310-ibs P310-idr P310-tcm P300-ibs ... Show all

Paradise Datacom P300 Series 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

Quick Links

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Summary of Contents for Paradise Datacom P300 Series