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OM20 Universal Outdoor Modem

OM20 Theory of Operation

MN-OM20– Revision 5

4–4

4.2

OM20 Functional Block Diagram

Figure 4-3 represents the OM20 Functional Blocks. The modem is shown in a typical application
with customer data, TX/RX RF equipment, and antenna I/O.

Figure 4-3. OM20 Outdoor Modem Functional Block Diagram

4.2.1

Baseband Processing

The Baseband Processor performs all of the functions required for an IBS/IDR Framing Unit, a
Reed-Solomon Codec, and an E1/T1 Drop and Insert System. In addition, the Baseband
Processing Section provides for transmit clock selection and rate adaptation as well as a rate
adapter and Plesiochronous/Doppler (PD) Buffer in the receive direction. A multiplexer is also
provided for the SCT Clock Source for Loop Timing Applications. The transmit and receive
paths may be configured independently under processor control.

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Содержание OM20

Страница 1: ...ANT NOTE The information contained in this document supersedes all previously published information regarding this product This manual is subject to change without prior notice OM20 Universal Outdoor Modem Installation and Operation Manual ...

Страница 2: ......

Страница 3: ... rights reserved Printed in the USA Comtech EF Data 2114 West 7th Street Tempe Arizona 85281 USA 480 333 2200 FAX 480 333 2161 OM20 Universal Outdoor Modem Installation and Operation Manual Part Number MN OM20 Revision 5 October 27 2009 ...

Страница 4: ...This page is intentionally blank ...

Страница 5: ...agrams 2 10 CHAPTER 3 OM20 INITIAL CONFIGURATION 3 1 3 1 OM20 INITIAL CONFIGURATION CHECK 3 1 3 2 INITIAL CONFIGURATION AND SETUP PROCESS 3 3 3 2 1 Initial Power Up and Configuration Verification 3 3 3 2 2 M C Setup IP Configuration RS232 Interface 3 3 3 3 OM20 VERIFICATION TESTING 3 4 3 3 1 TX Output Verification Test 3 4 3 3 2 RX Input Verification Test 3 5 3 4 STORAGE AND RESHIPMENT 3 5 CHAPTER...

Страница 6: ...4 18 4 12 ASYNCHRONOUS OVERHEAD OPERATION J3 FRAMING MULTIPLEXER CAPABILITY 4 18 4 13 STANDARD IBS MODE 4 19 4 14 ASYNCHRONOUS MULTIPLEXER MODE 4 20 4 15 ESC BACKWARD ALARMS 4 21 4 15 1 To Disable the ESC Backward Alarms 4 22 4 16 SATELLITE CONTROL CHANNEL SCC 4 22 4 16 1 SCC Framing Structure 4 22 4 16 2 Aggregate Data Rate 4 23 4 16 3 Overhead Rate Comparison 4 24 4 16 4 Actual Overhead Rate Cal...

Страница 7: ... 4 4 Monitor Menu 6 44 6 3 4 5 Alarms Menu 6 49 6 3 4 6 System Menu 6 56 6 3 4 7 Test Menu 6 59 6 4 CONFIGURING THE OM20 TO USE THE ETHERNET DATA INTERFACE OPTIONAL 6 60 6 4 1 Ethernet Flow Control 6 60 6 4 1 1 Half Duplex Flow Control 6 60 6 4 1 2 Full Duplex Flow Control 6 61 6 4 2 Packet Statistics 6 61 6 5 TERMINAL MODE CONTROL 6 62 6 5 1 Modem Terminal Mode Control 6 63 6 6 MODEM REMOTE COMMU...

Страница 8: ...ER Performance 16QAM Viterbi 8 11 8 13 6 BER Performance 16QAM Viterbi with Reed Solomon 8 12 8 13 7 BER Performance O QPSK Turbo 8 13 8 13 8 BER Performance 8PSK Turbo 8 14 8 13 9 BER Performance 16QAM Turbo 8 15 8 13 10 Input Level 8 19 APPENDIX A PRODUCT OPTIONS A 1 A 1 HARDWARE OPTIONS A 1 A 1 1 G 703 IDR ESC Interface A 1 A 1 2 Turbo Card A 1 A 1 3 Internal High Stability A 1 A 1 4 DC Input P...

Страница 9: ...T1 ESF T1 ESF S E 4 E 5 MULTIDESTINATIONAL SYSTEMS E 4 E 6 DROP AND INSERT MAPPING E 5 E 7 CONFIGURING THE OM20 FOR DROP AND INSERT E 7 E 7 1 Data Rate E 7 E 7 2 Operational Network Specification E 8 E 7 3 Terrestrial Framing Drop Mode Insert Mode E 8 E 7 3 1 Insert Terrestrial Frame Source E 9 E 7 4 D I Sample Configurations and D I Clock Setup Options E 9 E 8 D I MAPS AND MAP EDITING E 12 APPEND...

Страница 10: ...Table of Contents Revision 5 OM20 Universal Outdoor Modem MN OM20 viii H 1 1 Radyne AUPC H 1 H 1 2 EF AUPC H 2 H 1 3 Near Side AUPC H 2 ...

Страница 11: ...garding the content and design of this manual are appreciated To submit comments please contact the Comtech EF Data Technical Publications department Conventions and References TechnicalPublications comtechefdata com Related Documents The following documents are referenced in this manual EN300 421 and EN301 210 ETSI ETSI EN302 307 Metric Conversion Metric conversion information is located on the i...

Страница 12: ...ndicates a statement associated with the task being performed or information critical for proper equipment function CAUTION CAUTION indicates a hazardous situation that if not avoided may result in minor or moderate injury CAUTION may also be used to indicate other unsafe practices or risks of property damage WARNING WARNING indicates a potentially hazardous situation that if not avoided could res...

Страница 13: ...cation as defined in EN60950 Low Voltage Directive LVD The following information is applicable for the European Low Voltage Directive EN60950 HAR Type of power cord required for use in the European Community CAUTION Double pole Neutral Fusing ACHTUNG Zweipolige bzw Neutralleiter Sicherung International Symbols Symbol Definition Symbol Definition Alternating Current Protective Earth Safety Ground F...

Страница 14: ...tech EF Data Corporation s obligations under this warranty are limited to repair or replacement of failed parts and the return shipment to the buyer of the repaired or replaced parts Limitations of Warranty The warranty does not apply to any part of a product that has been installed altered repaired or misused in any way that in the opinion of Comtech EF Data Corporation would affect the reliabili...

Страница 15: ...stated is in lieu of all other warranties expressed implied or statutory including those of merchantability and fitness for a particular purpose The buyer shall pass on to any purchaser lessee or other user of Comtech EF Data Corporation s products the aforementioned warranty and shall indemnify and hold harmless Comtech EF Data Corporation from any claims or liability of such purchaser lessee or ...

Страница 16: ...ber serial number and a description of the problem Request a Return Material Authorization RMA number from the Comtech EF Data Customer Support representative Pack the product in its original shipping carton packaging to ensure that the product is not damaged during shipping Ship the product back to Comtech EF Data Shipping charges should be prepaid Online Customer Support An RMA number request ca...

Страница 17: ...put and Receive IF input frequencies of the OM20 are 950 to 2050 MHz The modem operates over a data rate range of 2 4 Kbps to 20 Mbps in 1 bps steps including at all standard IBS and IDR Data rates up to 8 448 Mbps A full range of Industry Standard Data Interfaces is available for the OM20 Interface types are selectable from EIA 530 J3 Ethernet J4 optional ITU G 703 Unbalanced on J10 11 Balanced o...

Страница 18: ...mation refer to TM133 OMS11 Operational Manual Radyne s OM20 Ethernet Graphical User Interface GUI offers browser based control of the OM20 BUC and LNB with numerous user friendly GUI programmable functions see Figure 1 2 The OM20 GUI provides selectable functions for different services Intelsat IDR and IBS as well as closed networks All of the configuration and Monitor and Control M C functions a...

Страница 19: ...ec Optional Custom Reed Solomon Optional IBS IDR Drop and Insert Optional External Reference Input Connector Modulation BPSK QPSK OQPSK standard Optional 8PSK 16 QAM Optional Turbo 5Mbps 20Mbps Sequential Codec and custom programmable Reed Solomon Optional OM73 Optional DVB Optional Cable Waveguide Mounting Kits M C Interface SNMP Ethernet Web Browser RS485 RS232 1 1 2 Software Feature Upgrades So...

Страница 20: ...OM20 Universal Outdoor Modem Introduction MN OM20 Revision 5 1 4 Notes ...

Страница 21: ...g requirements Mating Connectors for Power J1 Remote RS232 485 Fault J2 EIA 530 G703 Balanced data J3 and Ethernet J4 interface connections are supplied standard with the unit Use of an extended temperature CAT 5 cable such as Belden 7923A is recommended for the Ethernet Data M C interface WARNING There are no user serviceable parts or configuration settings located inside the OM20 Chassis There i...

Страница 22: ...rdance with local and national regulations 2 2 Unpacking 2 2 1 Outdoor Modem OM20 The OM20 Universal Outdoor Modem is carefully packaged at the factory to avoid damage and should arrive complete with the following items for proper installation OM20 Universal Outdoor Modem Power Mating connector J1 Mating Ethernet connector J4 Mating connectors for 18 pin J2 M C 38 pin J3 EIA 530 connectors Install...

Страница 23: ...0 power supply is designed for universal AC 95 250VAC 50 60 Hz application and is capable of supplying DC power to the BUC and LNB See the specification section of this document for appropriate voltages and currents Optionally a 48VDC power supply may be specified for the unit CAUTION Always ensure that power is removed from the OM20 before removing or installing the BUC or LNB Failure to do so ma...

Страница 24: ...hould not be placed immediately above a high heat or EMI Electro Magnetic Interference source to ensure the output signal integrity and proper receive operation Figures 2 3 through 2 11 illustrate the different interconnect and data interface configurations for the OM20 J1 AC POWER J10 SD DDI J3 EIA 530 INTERFACE J4 ETHERNET DATA M C TX OUTPUT J 8 J2 232 485 M C TERMINAL J11 RD IDO 3P 18P 38P RJ45...

Страница 25: ...20 Revision 5 2 5 2 4 1 OM20 Mounting Bracket Instructions Mount the OM20 to the desired location at the antenna using the supplied brackets Each brackets has two threaded holes 3 8 x 16 as shown in Figure 2 4 below Figure 2 4 OM20 Mounting Brackets ...

Страница 26: ... antenna systems where sufficient support of the feed boom arm is not available AC PWR DATA M C INTERFACE M C I O EIA 530 DATA M C I O ENET DATA M C I O G 703 DATA TX G 703 DATA RX IFL INDOOR OUTDOOR RJ45 OM 20 J7 RX INPUT TX OUT AC PWR J1 J2 M C I O J3 DATA I O J4 ENET I O G 703 DATA I O J10 J11 N 38P BNC 3P BNC 18P BUC SSPA TX RF OUT TX IF IN TX RF RXIF L BAND 950 2050MHz 18VDC T X RF RX IF L N ...

Страница 27: ... allowing for Data and M C functions AC PWR DATA M C INTERFACE ENET DATA M C I O IFL INDOOR OUTDOOR RJ 45 OM 20 J 7 RX INPUT J 8 TX OUT AC PWR J 1 J 2 M C I O J 3 DATA I O J 4 ENET I O G 703 DATA I O J 10 J 11 SMA N 3 P TXIF L BAND 950 2050 MHz 10 MHz 24 VDC RXIF L BAND 950 2050 MHz 18 VDC TX RF RX IF E NET DATA E NET M C L N B OMT BUC SS PA T X I F IN TX R F O UT Figure 2 6 OM20 Antenna Post Moun...

Страница 28: ...d method of mounting on larger diameter antenna systems where sufficient support and weight handling characteristics of the antenna offset feed arm is available Figure 2 7 OM20 Feed Arm Mount Ethernet Interface L N B OMT AC PWR DATA M C INTERFACE ENET DATA M C I O IFL INDOOR OUTDOOR RX E NET DATA E NET M C RXI FL BAND 950 2050 M H z 18VDC RJ45 TXRF E NETI N TX O UT ACIN BU C SSPA R XI N ...

Страница 29: ...igher output RF Power Levels AC PWR DATA M C INTERFACE ENET DATA M C I O IFL INDOOR OUTDOOR RJ 45 OM 20 J 7 RX INPUT TX OUT AC PWR J 1 J 2 M C I O J 3 DATA I O J 4 ENET I O G 703 DATA I O J 10 J 11 N 3 P BUC SSPA TX RF OUT TX IF IN OM 20 TX RF RXIF L BAND 950 2050 MHz 18 VDC TX RF RX IF TW T A TX IN T X O U T A C IN E NET DATA E NET M C L N B OMT Figure 2 8 OM20 with High Power Amplifier Ethernet ...

Страница 30: ... C I O J3 DATA I O J4 ENET I O G 703 DATA I O J10 J11 SMA N BNC 3P BNC 18P TXIF L BAND 950 2050 MHz 10 MHz 24VDC RXIF L BAND 950 2050 MHz 18VDC TX RF RX IF M C G 703 DATA IN G 703 DATA OUT B UC SSPA TX I FI N TX RF OUT 18P L N B OMT AC PWR DATA M C INTERFACE EIA 530 DATA M C I O IFL INDOOR OUTDOOR OM 20 J7 RX INPUT J8 TX OUT AC PWR J1 J2 M C I O J3 DATA I O J4 ENET I O G 703 DATA I O J10 J11 SMA N...

Страница 31: ...I O EIA 530 DATA M C I O ENET DATA M C I O ASI DATA TX ASI DATA RX IFL INDOOR OUTDOOR OM 20 J7 RX INPUT J8 TX OUT AC PWR J1 J2 M C I O J3 DATA I O J4 ENET I O ASI DATA I O J10 J11 SMA N BNC 3P BNC 18P TXIF L BAND 950 2050 MHz 10 MHz 24VDC RXIF L BAND 950 2050 MHz 18VDC TXRF RX IF M C ASI DATA IN ASI DATA OUT BUC SSPA T X I FI N TX RF OUT ...

Страница 32: ...OM20 Universal Outdoor Modem Installation MN OM20 Revision 5 2 12 Notes ...

Страница 33: ... Type V 35 RS 422 RS 232 G 703 etc MUST be selected BEFORE the mating connectors are installed Failure to do so may cause damage to the OM20 Power up the OM20 select the appropriate interface type and then install the data mating connector IMPORTANT Implementing Strap Code 26 can set the following modem configuration Refer to Table G 1 in Appendix G for an explanation and tabular listing of availa...

Страница 34: ... FEC Disabled Modulation QPSK Frequency 1350 MHz Interface The default will vary depending on the interface type Ethernet IP Address Mask 255 000 000 000 Modem IP Address 010 000 000 001 Server IP Address 010 001 001 001 Router IP Address 010 000 001 001 IMPORTANT IP M C Default Reset If the unit should lockup or lose communication during the initialization process the unit remote interface can be...

Страница 35: ...ning its Main Monitor Control Prog Upon successful completion of the powerup the LED s on the front of the unit will be Green If a failure is detected the Fault LED will illuminate on the web browser interface and on the front Status LED 3 2 2 M C Setup IP Configuration RS232 Interface Connect an Ethernet cable between the unit and a computer that has web browser capability Access the browser and ...

Страница 36: ...guidelines Precautions should be taken as to not damage the OM20 and or test operational equipment that are connected together The brief testing described below is to verify the OM20 operation and does not constitute operational testing over the Satellite Refer to the Satellite Providers system requirements and contact the Satellite Provider prior to radiating the system on any satellite Ensure th...

Страница 37: ...M20 are correct Remove the LNB coax cable from the Bias T and connect to the RX L Band input port J7 on the OM20 Enable the correct DC Bias Voltage for the LNB from the OM20 Browser Verify that the OM20 receiver locks to the carrier of interest CAUTION DC Voltage may be present on the output connector 3 4 Storage and Reshipment It is recommended that the unit be stored or reshipped in its original...

Страница 38: ...OM20 Universal Outdoor Modem OM20 Initial Configuration MN OM20 Revision 5 3 6 Notes ...

Страница 39: ...ign with additional optioned printed circuit cards available for additional features The minimum configuration consists of an L Band IF Assembly and a Digital Baseband Assembly The optional printed circuit cards include a Turbo Codec printed circuit card and one of several types of Interface printed circuit card Refer to Appendix A A block diagram of the OM20 is shown in Figure 4 1 Figure 4 1 OM20...

Страница 40: ... frequency The L Band modulated signal is then passed through a microprocessor controlled variable attenuator providing gain control of the output signal In the complex downconverter the signal for demodulation is amplified and sent through a variable wideband attenuator for AGC The gain controlled signal is then passed through a complex downconverter to a low IF Quadrature Demodulator IF Board Co...

Страница 41: ...Baseband Printed Circuit Card are three synchronous interfaces on a 25 pin interface supporting RS 422 V 35 and RS 232 data All three interfaces are provided on the same connector J3 and are selectable from the terminal or Ethernet ports Additionally data may be passed through the Ethernet port J4 Ensure that the correct interface is selected in the unit prior to connecting to the data interface R...

Страница 42: ...band Processing The Baseband Processor performs all of the functions required for an IBS IDR Framing Unit a Reed Solomon Codec and an E1 T1 Drop and Insert System In addition the Baseband Processing Section provides for transmit clock selection and rate adaptation as well as a rate adapter and Plesiochronous Doppler PD Buffer in the receive direction A multiplexer is also provided for the SCT Cloc...

Страница 43: ...e blocks are then interleaved and synchronized to the frame pattern as defined by the selected specification IESS 308 IESS 309 DVB etc After Reed Solomon Encoding the composite data and clock are applied to the Baseband Loopback Circuit 4 2 3 Rx Baseband Processing The Receive Processor performs the inverse function of the Tx Processor Data received from the satellite passes through the Baseband L...

Страница 44: ... on the RS422 Data interface The M C contains a high performance microprocessor and is responsible for overall command and control of modem functions The M C is constantly monitoring all subsystems of the modem by performing a periodic poll routine and configures the modem by responding to commands input to the system During each poll cycle the status of each of the subsystems is collected and rep...

Страница 45: ...screens and protocols 4 3 2 Modem Remote Communications RLLP The Remote Port located on J20 allows for control and monitoring of parameters and functions via an RS 232 Serial Interface or RS 485 for RLLP Protocol Equipment Remote Mode setup can be entered from the front panel or the Web Browser interface under the System menu This requires the user to first set the Remote Port Control to Remote th...

Страница 46: ... sink up to 20 ma maximum until a transmit or common fault is detected Will not sink current if a fault is detected Demod Fault Will sink up to 20 ma maximum until a receive or common fault is detected Will not sink current if a fault is detected The open collector faults are intended for use in redundancy switch applications in order to provide quick status indications 4 4 Async Port ES ES Commun...

Страница 47: ...e Data from the satellite is looped back for retransmission to the satellite providing a far end loopback after to framing unit TX RX Terrestrial Loopback provides both Terrestrial loopbacks simultaneously TX RX Baseband Loopback provides both Baseband loopbacks simultaneously Usage of the modems loopback capabilities in conjunction with the Ethernet data interface can produce undesirable network ...

Страница 48: ...OM20 Universal Outdoor Modem OM20 Theory of Operation MN OM20 Revision 5 4 10 Figure 4 4 Loopback Functional Block Diagram ...

Страница 49: ...OM20 Universal Outdoor Modem OM20 Theory of Operation MN OM20 Revision 5 4 11 Figure 4 5 Loopback Functional Block Diagram Figure 4 6 Loopback Functional Block Diagram ...

Страница 50: ...RC SCT SCTE TRANSMIT RECEIVE CLOCK DATA RECOVERY SCT SCTE RX SAT RT RD SCR BUFFER CLK SRC CLOCK RECOVERY IDI MODULATION HIGH STABILITY DEMODULATION J3 J3 CLK POL DATA POLARITY NORMAL INVERTED AUTO INV TERR BASE INVERT NONE INV BASEBAND INV TERR DATA DATA POLARITY BUFFER CLK POL NORMAL INVERTED INV TERR BASE INVERT NONE INV BASEBAND INV TERR DATA Figure 4 7 Clocking and Polarity Diagram 4 7 1 TX Cl...

Страница 51: ... SCR SCR is also referred to as Receive Clock Satellite Clock or Receive Timing RT When SCT clock is configured as Internal the frequency of the clock is set the same as the Transmit Terrestrial Clock rate If SCT clock is configured as SCR the internal clock is set to the same rate as the incoming receive satellite clock SCT is sometimes referred to as Internal Timing or Send Timing ST In the even...

Страница 52: ...overed from the satellite that is received from the distant end If selected the Buffer Clock is lock to the RX sat clock 4 7 2 2 SCTE Serial Clock Transmit External When SCTE is selected as the Rx Buffer clock the modem receives the clock from the Transmit Terrestrial interface 4 7 2 3 SCT Serial Clock Transmit If SCT clock is selected as the RX Buffer clock source then it should be configured for...

Страница 53: ...with this source SCT should be used if SCTE has excessive jitter 4 8 1 G 703 Interface Optional G7103 is an optional interface option The G703 option supports both balanced and unbalanced interface types he modem support If the G 703 Interface is selected then the Tx Clock Source will default to SCTE and the Clock Polarity will default to Auto Loop timing with a G 703 Interface or Asymmetrical Dat...

Страница 54: ...odem it is fed to a Viterbi Decoder for the first layer of error correction After error correction is performed by the Viterbi Decoder the unique words are located and the data is de interleaved and reformed into blocks The R S Decoder then corrects the leftover errors in each block The data is then descrambled and output from the R S Section 4 9 2 Reed Solomon Code Rate The R S Code Rate is defin...

Страница 55: ...112 7 126 112 7 126 112 7 126 112 7 126 112 7 126 112 7 126 112 7 0 125 0 125 0 125 0 125 0 125 0 125 0 125 0 125 4 4 4 4 4 4 4 4 115 58 29 19 15 10 8 5 IDR With 96 Kbps O H 1544 2048 6312 8448 225 205 10 219 201 9 194 178 8 194 178 8 0 0976 0 0896 0 0899 0 0899 4 4 4 4 9 7 2 2 8PSK 1544 2048 6312 8448 219 201 9 219 201 9 219 201 9 219 201 9 0 0896 0 0896 0 0896 0 0896 8 8 8 8 18 13 4 3 DVB All 20...

Страница 56: ...nc Standard IBS the Baud Rate is approximately 1 2000 of the Data Rate listed in Table 4 2 For Enhanced Async IBS Async the Baud Rate is selectable but Data Rate is limited The maximum Baud Rate is 19 200 bps for IBS Async Two software controlled modes are designed into the card to best utilize the available bits Standard IBS and IBS Async The characteristics of the Channel Interface are also dete...

Страница 57: ...9200 1664 19200 1728 19200 1792 19200 1856 19200 1920 19200 1984 19200 2048 19200 4 13 Standard IBS Mode In the first or Normal mode all bit assignments are per the IBS standard The bits of Overhead Housekeeping byte 32 are implemented as shown in Table 4 3 below Table 4 3 Bit 1 ES to ES Data Channel This bit is routed directly to the ES to ES Data Channel Its data rate is 1 512th of the aggregate...

Страница 58: ...no clocks are provided with this channel Since it would be rare that the data rate provided was exactly that required for a standard rate device the only method of communicating using this channel is to allow it to super sample the user data 4 14 Asynchronous Multiplexer Mode Since many of the frame bits in the standard IBS mode are not used an Enhanced Multiplexer Mode has been implemented that c...

Страница 59: ...applied to the Common Input Connection of one of these relays that relay and associated backward alarm will then be in a no fault state When the ground is removed the relay and the associated Tx Backward Alarm will toggle to the faulted state When in the faulted state the receive end of the link will receive that backward alarm that is initiated at the transmit end of the link The user can connect...

Страница 60: ...lved The maximum in band rate supported is 115200bps The Asynchronous Data Interface J17 is a 9 Pin Female D Connector The data interface is either RS232 or RS485 via a front panel selection Refer to Table 5 7 for pinouts 4 16 1 SCC Framing Structure Each SCC frame consists of the following A 10 bit synchronization pattern called the Synchronizing Word Multiple variable length slots filled with us...

Страница 61: ...atio can approximate it The following equation shows the basic calculation of this rate Aggregate Date Rate User Data Rate In Band Rate In Band Rate Control Ratio User Data Rate In Band Rate Synchronizing Overhead Aggregate Data Rate As an example given the following parameters User Data Rate 1 024 000 bps In Band Rate 19 200 bps Control Ratio 1 to 7 Aggregate data rate 1 024 000 19 200 19 200 7 o...

Страница 62: ...2 048 000 19 200 1 7 2 069 951 1 011 3 072 000 19 200 1 7 3 093 943 1 007 4 096 000 19 200 1 7 4 117 951 1 005 6 312 000 19 200 1 7 6 337 248 1 004 6 312 000 19 200 1 3 6 337 606 1 004 6 312 000 19 200 1 1 6 350 418 1 006 4 16 4 Actual Overhead Rate Calculation The following is the actual calculation the modem does to calculate the overhead ratio 1 The modem calculates the minimum in band rate to ...

Страница 63: ...ATIO 1 1 1 2 1 3 1 4 1 5 1 6 1 7 ii This allows the user to simulate the framing used by the Satellite Control Channel Option Pass Thru Mode only The SCC CTL RATIO is the ratio of overhead in band data to synchronizing words 3 Set the desired SCC in band rate i SCC INBAND RATE 300 to 115200 ii This allows the user to request the rate of in band data for the overhead channel This sets the overhead ...

Страница 64: ...to the overhead channel will be the DB 9 Female Port labeled ASYNC J17 SCC Overhead Chart Examples Viterbi 3 4 w V 35 Scrambler Modem Data Rate Kbps SCC Control Channel Rate In Band Overhead Rate Setting Symbol Rate 9 6 1 1 300 6800 9 6 1 2 300 6700 9 6 1 3 300 6667 9 6 1 4 300 6650 9 6 1 5 300 6641 9 6 1 6 300 6634 9 6 1 7 300 6629 9 6 1 1 9600 19200 9 6 1 2 9600 17067 9 6 1 3 9600 15543 9 6 1 4 ...

Страница 65: ...o the factory Users are required to identify these ID codes when they want additional features added to their unit Radyne will supply a new ID code that is required to be entered in the ID code field Once the new ID code is entered the modem will activate the new features Refer to Appendix B for upgrade procedures 4 19 Strap Codes The Strap Code is a quick set key that sets many of the modem param...

Страница 66: ...OM20 Universal Outdoor Modem OM20 Theory of Operation MN OM20 Revision 5 4 28 Notes ...

Страница 67: ...e OM20 must utilize the appropriate mating connector supplied Refer to Table 5 1 and Figure 5 1 for the standard unit Reference throughout this section will be identified as the OM20 LABELS J1 Power J2 232 485 M C Terminal J3 EIA 530 Data I O ES ES Data Balanced G 703 J4 Ethernet Data M C J6 Ground J7 RX L Band Input J8 TX L Band Output J9 Compact Flash Card J10 SD G 703 DDI Unbalanced Optional AS...

Страница 68: ...OM20 Universal Outdoor Modem Rear Panel Interfaces MN OM20 Revision 5 5 2 Figure 5 1 OM20 Front panel ports Figure 5 1A OM20 Rear panel ports ...

Страница 69: ... one end Refer to Table 5 2 for the connector Pinout Table 5 2 AC Power A Line L1 B Neutral L2 C Ground 5 1 1 2 DC Power Input Switch Optional An Optional DC Power Input is available for the OM20 The unit may be powered from a 44 56 VDC source with a maximum unit power consumption of 5 2 A This port is a 4 pin D38999 24FC4PN connector mating connector supplied with the unit Refer to Table 5 2A for...

Страница 70: ...when necessary Detailed status information is available via the GUI Remote port and the Form C fault connections available on this connector This summary information can be connected to external equipment switches or alarms Refer to Table 5 3 for the Form C connector pin outs Table 5 3 Remote Terminal Fault Connector J2 Pin No Signal Name Signal Direction A Receive Data RS 232 RXD 232 Input B Tran...

Страница 71: ...ata Connector J3 J3 Pin No Signal Name Signal Direction EIA 530 Std 25 Pin Connector Reference 1 Shield 1 2 Send Data B SD B Input 14 3 Send Data A SD A Input 2 4 Send Timing A ST A Output 15 5 Receive Data RD A Output 3 6 Receive Data B RD B Output 16 7 Request To Send A RS A Input 4 8 Receive Timing A RT A Output 17 9 Clear To Send A CS A Output 5 10 Modulator Fault Open Collector MF Output 18 1...

Страница 72: ...ound GND 4 33 Send Data SD B Input 9 36 Receive Data B RD B Output 11 37 Mod Fault MOD FLT Open Collector Output 14 29 Demod Fault DMD FLT Open Collector Output 15 5 1 4 ETHERNET DATA M C J4 The Ethernet Data M C Port J4 is dedicated for Ethernet communications This port is configured for 10 100 Base T communication protocols and can be used to Monitor Control the unit with the GUI interface funct...

Страница 73: ... be used where EMI issues are a concern 5 1 5 Ground Lug J6 An external chassis ground post is located on the OM20 J6 GND requires a 10 32 threaded stud Note this is for external grounding and should not be used to ground the AC power Source on J1 5 1 6 RX L Band IF J7 The Receive L Band Input Port is a 50 Ohm N Type Female Connector that is used for the L Band IF DC Reference connection to from t...

Страница 74: ...arm Whenever proper AC Power is supplied to the unit and the power supply is functioning normally this LED will be Green If a Fault condition exists within the Power subsystem this LED will be RED indicating that service is required 5 1 12 G 703 Balanced Connections are available via the J3 connector Refer to Table 5 4a 5 1 13 EXT Reference J12 The External Clock connector is optional and must be ...

Страница 75: ...ccessed utilizing Microsoft Internet Explorer 6 or greater 6 2 Configuring Your PC An example of a GUI layout is shown in Figure 6 1 showing the location and labeling of the Interface The graphical user interface is designed to replicate the front panel For users familiar with the front panel interface adjusting to the GUI interface should be seamless The GUI Interface is divided into four functio...

Страница 76: ...20 Revision 5 6 2 Figure 6 1 Web User Interface 6 2 1 Appearance This site is a monitor and control of an individual complete satellite terminal With a front panel look and feel and an appearance that resembles the DMD20 layout the product features a familiar look ...

Страница 77: ...igation link causes the corresponding subglobal division to be revealed and all other subglobal divisions to be hidden Mousing off a subglobal menu link outside a specified region x and y pixels from the top of the page causes all subglobal divisions to be hidden The position of the mouse is continuously being monitored Thus we have a show hide layer submenu effect Table 6 1 Item Number Descriptio...

Страница 78: ...ates a hardware fault for the unit Event Yellow Indicates that a condition or event has occurred that the modem has stored in memory The events may be viewed from the GUI or in the Terminal Mode Remote Green Indicates that the unit is in the process of updating firmware with FTP Modulator LED Indicators Transmit On Green Indicates that the Modulator transmitter is on Major Alarm Red Indicates that...

Страница 79: ...on startup of the web browser This screen will give a brief overview of the product and contains no configurable items The four main menus and with submenus are Introduction Password Setup o Access o Preferences IP Administration o Modem Addressing o Configure Apps o Configure PC Monitor and Control o Transmit o Receive o Interface o Monitor o Alarms o System o Test ...

Страница 80: ...the web browser This page lists the general features of the unit and lists a brief description of the unit Notice on the bottom of the page that there are selections for Technical Specifications Product Options Troubleshooting About Us and Contact us Access these areas for further detailed description of the selection Figure 6 2 Introduction Screen ...

Страница 81: ...itor Control configuration menu tabs a login prompt will appear In order to gain access to any of the configuration menus log in with the correct user name and password The factory default login name is admin and the default password is admin For further information on setting user profiles see Section 6 2 3 IP and Application Administration Menu Figure 6 3 Login Screen ...

Страница 82: ... USER 3 Allows the operator to assign the applicable user group User Access Group Guest Operator Admin Allows the operator to assign the applicable user Access Level group Enter User Name Allows the operator to assign the applicable user name used for login Enter a New Password Allows the operator to assign the applicable user name password used for login Confirm New Password Allows the operator t...

Страница 83: ...eferences Menu Figure 6 5 Modem Preferences menu User Confirmation DISABLED ENABLED The user confirmation preference allows the user to force disable confirmation of all changes through the web interface This does not override bandwidth confirmations However these are always enabled ...

Страница 84: ... applications and PC 6 3 3 1 Modem Addressing Figure 6 6 Modem Addressing Server Boot Mode DEFAULT NON VOL BOOTP IP TEST Default All of the following parameters as shown in Table 6 3 through 6 8 will be set and will not change until the boot mode is changed IP IPMASK 255 000 000 000 MODEM IPADDR 010 000 000 001 SERVER IP ADDR 010 001 001 001 ROUTER IP ADDR 010 000 001 001 Table 6 3 IP Parameters ...

Страница 85: ...ould be consistent for the mask defined This address is expressed in decimal format Broadcast and loop back addresses will not be allowed These are addresses with all subnet bits set to 0 s or 1 s Server IP Address XXX XXX XXX XXX The IP Address of the Boot Server and the address of the SNMP Trap Server when SNMP is active If a server is used and there is no local router this address must be consi...

Страница 86: ...onfiguring Applications Figure 6 7 Configuring Applications SNMP Setup SNMP Version V1 2 V3 Default V1 V2 Trap Version V1 2 Default V1 Authorization TRAPS ON TRAPS OFF Default TRAPS OFF Read Community Public Default Read Write Community Public Default FTP Setup UserID User Password Password ...

Страница 87: ... AUTH PASSWORD Viewer AUTH PASSWORD Oper AUTH PASSWORD Oper PRIV PASSWORD Viewer PRIV PASSWORD Viewer PRIV PASSWORD Oper PRIV PASSWORD Oper AUTHENTICATION MD5 AUTHENTICATION SHA AUTHENTICATION MD5 AUTHENTICATION SHA PRIVACY DES PRIVACY DES PRIVACY DES PRIVACY DES Table 6 5 SNMP Parameters FTP USER ID USER PASSWORD PASSWORD Table 6 6 FTP Parameters WEB Confirmation disabled USER 1 guest USER 2 oper...

Страница 88: ...MOTE PORT Type VT100 baud rate 19200 interface rs232 remote control terminal Table 6 8 Terminal and Remote Port Parameters NON VOL Stores and uses IP Mask and addresses as provided by the user BOOTP At boot time use Bootp Protocol to get names masks and IP Addresses of the modem router and server ...

Страница 89: ...OM20 Universal Outdoor Modem Web Browser Remote Protocol MN OM20 Revision 5 6 15 Configuring the PC Figure 6 8 Configuring the PC ...

Страница 90: ...own and then across to the desired function Select the desired sub menu function and the data entry menu will appear in the data entry section allowing for adjustments to the parameters displayed 6 3 4 1 Transmit Menu The Transmit menu contains sub menus General IF Data Reed Solomon ODU BUC and AUPC General IF Menu Figure 6 9 General IF Menu Network Spec CLOSED NET IDR IBS DROP INSERT DVB SAT Used...

Страница 91: ...pe V 35 Spectrum Mask Intelsat For Data Rates 1 544 Framing Type 1 15 IBS Scrambler Type IESS 309 Spectrum Mask Intelsat IBS IESS 309 For Data Rates 2048 Framing Type 1 15 IBS Scrambler Type IESS 309 Spectrum Mask Intelsat Drop Insert Data Rates n x 64 n 1 2 3 4 5 6 8 10 12 15 16 20 24 30 Framing Type 1 15 IBS Scrambler Type IESS 309 Spectrum Mask Intelsat DVB Data Rates All Rates Framing Type DVB...

Страница 92: ...cy from this menu Power dBm 20 to 45 dBm Allows the user to enter the Transmitter Power Level Carrier Control ON OFF AUTO VSAT RTS Allows the user to select the carrier type Refer to Appendix C for further information Spectrum Normal Inverted Allows the user to invert the direction of rotation for PSK Modulation Normal meets IESS Specification Spectral inversion may be required if the BUC LO is hi...

Страница 93: ...lows the user to view the Symbol Rate INNER FEC Viterbi 1 2 3 4 7 8 None Optional FEC Rates Sequential 1 2 3 4 7 8 Trellis 8PSK 2 3 Turbo 5 Mbps 793 495 Turbo 20Mbps 1 2 3 4 7 8 Comstream Seq 3 4 DVB VIT 1 2 2 3 3 4 5 6 7 8 DVB Trellis 2 3 5 6 8 9 Allows the user to select the Tx Code Rate and Type TPC Interleaver DISABLE ENABLE Allows user to disable or enable the TPC Interleaver Valid only for R...

Страница 94: ...Used with IDR IBS or Asynchronous Interface Only Allows the user to select the framing type Terrestrial Framing NONE 188 204 DVB Only Data Polarity INV TERR BASE INV BASEBAND INV TERR DATA NONE Allows the user to invert the Tx Data polarity Symbol Pair NONE SWAPPED Allows the user to swap the I Q Channels BPSK Mode Only ESC Overhead VOICE X2 DATA 64KBPS IDR ESC Channel used for Voice or 64 K data ...

Страница 95: ...ese selections are active only when the Reed Solomon Option is installed Figure 6 11 Reed Solomon Menu Reed Solomon Control ENABLED DISABLE Allows the user to Enable Disable the Reed Solomon Encoder Reed Solomon Rate N Value K Value Refer to Table 3 1 for valid N K values Displays the currently used n k Reed Solomon Codes In Closed Net Mode the user may select custom R S Codes Interleaver Depth 4 ...

Страница 96: ...utilizing BUC that supports FSK the modem will display LO frequency as stated by the BUC Carrier Delay sec 0 to 255 Allows the user to select the time delay after power up before the Tx Carrier may be enabled This allows time for the BUC to stabilize OSC Side Band LOW SIDEBAND HIGH SIDEBAND Allows the user to select the location of the BUC LO The user must enter the location of the BUC LO in order...

Страница 97: ...e lower Amp current threshold limit of the BUC If current falls below this limit an alarm will flash High Alarm Thrsh Amps This menu allows the user to establish the upper Amp current threshold limit of the BUC If current exceeds the upper limit an alarm will flash BUC Voltage ENABLED DISABLED Allows the user to enable or disable the BUC supply voltage IMPORTANT The following menus are for BUCs th...

Страница 98: ... the user to enter the BUCs address for FSK communications Modem may be able to retrieve address through the FSK Query for Address Test menu BUC OUTPUT ENABLED DISABLED Allows the modem to enable and disable the output of the BUC via FSK command FSK TEST NONE LOOPBACK CYCLE TX ENABLE QUERY FOR ADDRESS PASS THRU Only available when the FSK Comm is Enabled NONE This is the none FSK operational mode ...

Страница 99: ...nicate with the BUC utilizing the BUCs message protocol AUPC Menu These selections are visible only when the AUPC Option is installed Figure 6 13 Aupc Menu Local Mode The LOCAL AUPC CONFIGURATION Menu contains the local configuration parameters for the AUPC Function MODE DISABLED NEAR SIDE RADYNE EFDATA DISABLED Allows the user to enable or disable the Local AUPC Function of the local modem ...

Страница 100: ...the default output power level MINIMUM TX POWER 20 to 45 dB This allows the user to set the minimum Transmit Power EFDATA AUPC When configured for EFDATA AUPC the minimum Transmit Power is the lowest power setting that will be used when the local modem commands a decrease of the Transmit Power from the Remote modem RADYNE When configured for Radyne AUPC the minimum Transmit Power is the lowest pow...

Страница 101: ... the commands to increase or decrease Transmit Power are sent Each command will result in a 0 5 dB increase or decrease in Transmit Power from the remote transmitter The tracking rate is adjustable from 0 5 dB per minute to 6 0 dB per minute in 0 5 dB steps Only available when EFAUPC is selected as the framing LOCAL CL ACTION HOLD NOMINAL MAXIMUM This allows the user to set the Remote Transmit Pow...

Страница 102: ...te modem upon receiver loss of lock LOOPBACK DISABLE ENABLE Allows the user to enable or disable the Baseband Loopback Test Mode of the remote modem TX 2047 TEST DISABLE ENABLE Allows the user to enable or disable the Transmit 2047 Pattern Test Mode of the remote modem RX 2047 BER Reports the BER measurement of the receiver 2047 Pattern Test Mode of the remote modem BER is reported from the 1x10 5...

Страница 103: ...the modem to meet a set specification The purpose is to eliminate keystrokes and potential compatibility problems Additionally data rates not covered by the given mode of operation will not be allowed If the mode of operation is selected after the data rate has been entered then the data rate must be compatible with the desired mode of operation or the mode will not be allowed The following parame...

Страница 104: ...bler Type IESS 309 Spectrum Mask Intelsat DVB Data Rates All Rates Framing Type DVB Scrambler Type DVB Spectrum Mask DVB 0 25 0 35 Closed Net All possible combinations allowed however DVB settings requires the DVB network spec Strap Code The Strap Code is a quick set key that sets many modem parameters Consult the strap code guide for available strap codes Parameters set by strap code Data Rate In...

Страница 105: ... frequency than the LNB input frequency this creates a spectral inversion and the IF Spectrum must be inverted to compensate Demodulation QPSK BPSK OQPSK 8PSK 16QAM Allows the user to select the demodulation type Spectral Mask Intelsat 0 35 DVB 0 35 DVB 0 25 Allows the user to invert the direction of rotation for PSK Modulation Normal meets the IESS Specification Sweep Range kHz 0 to 255 kHz Allow...

Страница 106: ...ectral inversion applications Carrier Input Level Limit 30 to 90 dBm Allows the user to adjust the low level threshold limit for input power Input power level below the threshold limit will trigger a major alarm on the demodulator EB NO Alarm Thrsh 0 0 to 9 90 dB Allows the user to set the desired Eb No for the local receiver This setting is compared against the receive Eb No and commands to the r...

Страница 107: ...llows the user to enable or disable the Differential Decoder Having the decoder enabled ensures proper phase lock May not be adjustable in some modes Scrambler Selection NONE V 35 IESS V 35 CITT V 35 EF IBS w Optional Framing and optional Reed Solomon Reed Solomon Scrambler w Optional Framing CCITT V 35FC OM 73 V 35EF_RS TPC DVB EDMAC Allows the user to select the descrambler type Scrambler Contro...

Страница 108: ...o simulate the framing used by the Satellite Control Channel Option Pass Thru Mode only The SCC CTL RATIO is the ratio of overhead in band data to synchronizing words SCC Inband Rate 300 to 115200 NOTE Only available visible when SCC is selected for the Rx Satellite Framing Allows the user to request the rate of in band data for the overhead channel Async Inband Rate 75 150 300 600 1200 2400 4800 ...

Страница 109: ...f optional Reed Solomon Card is installed RS K Value Refer to Table 3 1 for valid n k values Displays the currently used K value Reed Solomon Codes In Closed Net Mode the user may select custom R S Codes if optional Reed Solomon Card is installed Rx Interleaver Depth 4 8 12 ODU LNB Menu Figure 6 17 ODU LNB Menu LO Frequency MHz Allows the user to enter the Local Oscillator frequency in MHz in orde...

Страница 110: ...ED Allows the user to enable disable LNB supply voltage Low Alarm Thrsh Volts This menu allows the user to establish the lower voltage threshold limit of the LNB If voltage falls below this limit an alarm will flash High Alarm Thrsh Volts This menu allows the user to establish the upper voltage threshold limit of the LNB If voltage exceeds this limit an alarm will flash Low Alarm Thrsh Amps This m...

Страница 111: ...ce RS422 SERIAL G 703 E2 G 703 T2 BAL G 703 T2 UNBAL G 703 E1 BAL G 703 E1 UNBAL G 703 T1 AMI G 703 T1 B8ZS V 35 ASI ETHERNET Allows the user to select the Transmit Type Terr Clock Source SCTE SCT Allows the user to select the Transmit Clock Source Tx Clock Polarity AUTO NORMAL INVERTED Allows the user to select the Clock Polarity for the Tx Terrestrial Clock relative to the Tx Data Auto detects w...

Страница 112: ... Chaining or enable it on Port 4 Only visible when Ethernet is selected as the interface type ETH QOS Type NORMAL PORT BASED Selects the standard DMD20 priority hierarchy of processing an IEEE 803 3ac Tag Ipv4 Type of Service Field Differentiated Services Field or Ipv6 Traffic Class Field The Port Based priority overrides any standard priority When operating in this mode Port 1 JS1 has the highest...

Страница 113: ...urrent programmed Tx drop map for the modem Refer to Section 3 13 Drop and Insert Mapping in this manual Drop Mode NONE T1 D4 T1 ESF PCM 30 PCM 30C PCM 31 PCM 31C T1 D4 S T1 ESF S Drop mode may only be changed from none when the drop and insert specified is in use Terrestrial Time Slot 1 31 Allows the user to edit the Tx Edit map to specify the terrestrial slots that will be dropped into the assig...

Страница 114: ...INK1 Terrestrial Streaming BYTE OUTPUT PACKET OUTPUT ASI only Byte output continuous Packet output burst Terrestrial Interface RS422 SERIAL G 703 T2 UNBAL G 703 E1 BAL G 703 E1 UNBAL G 703 T1 AMI G 703 T1 B8ZS V 35 ETHERNET Allows the user to select the Receive Type Esc Ch 1 Gain Provides gain in channel 1of engineering service channel in 96K framing mode Esc Ch 2 Gain Provides gain in channel 2 o...

Страница 115: ...ER CLOCK SOURCES Source 1 of 1 SCTE SCE RX SAT EXT BNC EXT IDI Source 2 SCTE SCE RX SAT EXT BNC EXT IDI Source 3 SCTE SCE RX SAT EXT BNC EXT IDI Source 4 SCTE SCE RX SAT EXT BNC EXT IDI Source 5 SCTE SCE RX SAT EXT BNC EXT IDI RX ASYNC Async Mode ES ES ESC ENHANCED ES ES is displayed when IBS Network Spec is selected ESC Enhanced can be selected in Closed Net and uses the Overhead Signaling bytes ...

Страница 116: ...pping in this manual Insert Mode NONE T1 D4 T1 ESF PCM 30 PCM 30C PCM 31 PCM 31C T1 D4 S T1 ESF S Insert mode may only be changed from none when the drop and insert specified is in use Submit Map Allows the user to Submit the Rx D I Map Time Slots Reset Map Allows the user to reset the Rx D I Map Time Slots T1 E1 Frame Src T1 E1 FRAME SRC INTERNAL EXTERNAL Selects the frame source for T1 or E1 fra...

Страница 117: ...ision 5 6 43 General Menu Figure 6 20 General Menu External Frequency MHz Variable Through Data Rate Allows the user to select the external clock frequency in MHz Reference Frequency Source INTERNAL EXTERNAL HIGH STABILITY Reference Frequency MHz EXTERNAL HIGH STABILITY ...

Страница 118: ...rrier frequency offset as measured by the modem Rx Input Level dBm Displays the estimated receive signal level as seen by the Demodulator This window is active continuously and is above the Gel Tab area Eb No dB Displays the estimated Eb No as seen by the demodulator This window is active continuously and is above the Gel Tab area Raw BER Displays the estimated channel error rate before decoding m...

Страница 119: ...5V TX Supply Displays the measured voltage of the 1 5 Volt Tx power bus located inside the modem 1 5V RX Supply Displays the measured voltage of the 1 5 Volt Rx power bus located inside the modem 3 3V Supply Displays the measured voltage of the 3 3 Volt power bus located inside the modem 5V Supply Displays the measured voltage of the 5 Volt power bus located inside the modem 12V Supply Displays th...

Страница 120: ...elected as the interface type Error Packets Displays the number of erred Ethernet packets received from the satellite Only visible when Ethernet is selected as the interface type PKT Error Rate Displays the satellite Packet Error Rate Only visible when Ethernet is selected as the interface type Reset Ethernet Packet Stats Allows the user to reset the Ethernet packet statistics by pressing this but...

Страница 121: ... 10 Base T Full Duplex 100 Mbps Half Connected at 100 Base T Half Duplex 100 Mbps Full Connected at 100 Base T Full Duplex PORT 1 STATUS See the note above Displays the current status of LAN Port 1 PORT 2 STATUS See the note above Displays the current status of LAN Port 2 PORT 3 STATUS See the note above Displays the current status of LAN Port 3 PORT 4 STATUS See the note above Displays the curren...

Страница 122: ...he entire event buffer Event Type I Informational Y Yellow alarm Indicates a transmit or receive warning condition R Red alarm Indicates a transmit or receive failure losing traffic IMPORTANT The Event Buffer may be sorted by warning level time date or event description This feature may be used to further investigate event occurrences ...

Страница 123: ...s Fail Unmasked Masked Indicates a transmit DSP configuration failure Sct Clock PLL Pass Fail Unmasked Masked Indicates that the Tx SCT Clock PLL is not locked This alarm will flash on during certain modem parameter changes A solid indication points toward a configuration failure within the modem Sym Clock PLL Pass Fail Unmasked Masked Indicates that the Tx Symbol Clock PLL is not locked This alar...

Страница 124: ... when the Ethernet Card is installed and the Ethernet Interface is selected MINOR ALARMS Terr Clock Act Pass Fail Unmasked Masked Indicates no Terrestrial Clock activity Terr Data Act Pass Fail Unmasked Masked Indicates no Tx Data activity Terr AIS Pass Fail Unmasked Masked Indicates that AIS has been detected in the Tx Data Stream DnI Frame Lock Pass Fail Unmasked Masked Indicates that the TX Ove...

Страница 125: ... receive FPGA hardware failure DSP Config Pass Fail Unmasked Masked Indicates a receive DSP failure Signal Lock Pass Fail Unmasked Masked Indicates that the demod is unable to lock to a signal Input Level Pass Fail Unmasked Masked Indicates Rx signal level has fallen below input threshold Frame Lock Pass Fail Unmasked Masked Indicates that the Framing Unit is unable to find the expected framing pa...

Страница 126: ...asked Masked Indicates that the interface card is faulted and will not pass data displays only when the Ethernet Card is installed and the Ethernet Interface is selected MINOR ALARMS Buffer Underflow Pass Fail Unmasked Masked Indicates that a Doppler Buffer underflow has occurred Buff Near Empty Pass Fail Unmasked Masked Indicates that the Doppler Buffer is about to underflow Buff Near Full Pass F...

Страница 127: ...er Pass Fail Unmasked Masked Indicates that the Reed Solomon Interleaver is not synchronized RS Uncorr Word Pass Fail Unmasked Masked Indicates status of the Reed Solomon uncoded word fault Ebno Pass Fail Unmasked Masked Indicates that the Eb No is outside of limits Rx Level Pass Fail Unmasked Masked Indicates if Rx level is below allowable limits IBS BER Pass Fail Unmasked Masked Indicates that t...

Страница 128: ...ration failure Codec FPGA Cfg Pass Fail Unmasked Masked Indicates Turbo Codec Card FPGA configuration failure Codec Dev Cfg Pass Fail Unmasked Masked Indicates Turbo Codec Card ASIC configuration failure ExtClk Activity Pass Fail Unmasked Masked Indicates External Clock Activity failure ExtRef Activity Pass Fail Unmasked Masked Indicates External Reference Activity failure ExtRef Lock Pass Fail Un...

Страница 129: ... voltage of the 3 3 Volt power bus located inside the modem 5V Supply Pass Fail Unmasked Masked Displays the measured voltage of the 5 Volt power bus located inside the modem 12V Supply Pass Fail Unmasked Masked Displays the measured voltage of the 12 Volt power bus located inside the modem 12V Supply Pass Fail Unmasked Masked Displays the measured voltage of the 20 Volt power bus located inside t...

Страница 130: ...to select the emulation type Terminal Baud Rate 150 300 600 1200 2400 4800 9600 19200 38400 57600 115200 Allows the user to enter the terminal baud rate Multidrop Address 32 255 Allows the user to enter the Remote Port Multidrop Address Remote Interface RS 232 RS 485 Allows the user to enter the Remote Port interface type Remote Baud Rate 150 300 600 1200 2400 4800 9600 19200 38 400 57 600 115200 ...

Страница 131: ... firmware revision M C Revision Displays the installed Monitor and Control revision Main Board Indicates the Radyne part number for the Baseband Board Assembly IF Board Indicates the Radyne part number for the IF Board Assembly Terr Intf Board Indicates the Radyne assembly number for the Terrestrial Interface Assembly Codec Board Indicates the Radyne part number for the Codec Board ...

Страница 132: ...lays a series of symbols that describe feature status The following symbols indicate Installed No hardware available Requires hardware for upgrade Feature is in Demo Mode and will expire Key Code Required Call customer service Feature is enabled for customer use but the OM20 hardware required has not been detected or has failed Features upgrades can also be implemented through the Web Browser inte...

Страница 133: ...r to enable the transmit test patterns listed above Rx Test Pattern NONE 2047 2 15 1 2 23 1 Allows the user to enable the receive test pattern listed above Rx Pattern Sync YES NO Yes indicates that the received test pattern is in sync Loopback Type NONE TERR RX BASEBAND RX TERR TX BASEBAND TX IFEC TX IF BASEBAND RX TX Pattern Ber NO SYNC nnnn x 10 n Displays the measured Bit Error Rate for the rec...

Страница 134: ...Polarity to Normal Under Drop Insert Set the Drop Mode to None Under the Interface Menu Under the Rx Setup Menu Set the Terrestrial Interface to Ethernet Set the Buffer Size to Zero Set the Buffer Clock to Rx Sat Set the Buffer Clock Polarity to Normal Under Drop Insert Set the Insert Mode to None 6 4 1 Ethernet Flow Control When disabled if a packet is received for transmission and no packet buff...

Страница 135: ...a pause frame with the maximum pause time to stop the remote nodes from transmitting The OM20 sends out another pause frame with the pause time set to zero as soon as free buffer space becomes available 6 4 2 Packet Statistics The following statistics are available under the Monitor Menu when the Ethernet Data Interface is selected Total Packets This Counter displays the total number of Ethernet p...

Страница 136: ... Alarm will be generated If the WAN Port is down a Tx and Rx Ethernet WAN Major Alarm will be generated 6 5 Terminal Mode Control The OM20 Terminal Mode Control allows the use of an external terminal or computer to monitor and control the modem from a full screen interactive presentation operated by the modem itself No external software is required other than VT 100 Terminal Emulation Software e g...

Страница 137: ...0 2400 4800 9600 19200 and 38400 The connection must be set for 8 data bits 1 stop bit and no parity 8 N 1 Three terminal emulations are supported VT 100 WYSE 50 and ADDS VP is used for setting the screen when the terminal is used for the first time the non volatile memory is reset 6 6 Modem Remote Communications 6 6 1 Host Computer Remote Communications The Remote Port J2 of the OM20 allows for c...

Страница 138: ...OM20 Universal Outdoor Modem Web Browser Remote Protocol MN OM20 Revision 5 6 64 ...

Страница 139: ... replacement is not intended in the field 7 1 1 Clock Adjustment The OM20 allows for internal VCO speed adjustment from the GUI Clock adjustment should be performed only when an internal clock source has insufficient accuracy for the custom modem application 7 2 Troubleshooting Should a unit be suspected of a defect in field operations after all interface signals are verified the correct procedure...

Страница 140: ...the Tx SCT Clock PLL is not locked This alarm will flash on during certain modem parameter changes A solid indication points toward a configuration problem within the modem SYM Clock PLL Indicates that the Tx Symbol Clock PLL is not locked This alarm will flash on during certain modem parameter changes A solid indication points toward a problem with the incoming clock to the modem SCTE LB Synth PL...

Страница 141: ...cation points toward a configuration problem within the modem Ethernet WAN Indicates that the WAN Port is down 7 2 1 3 Minor Tx Alarms Alarm Possible Cause TERR CLK ACT Indicates no Terrestrial Clock activity TERR DATA ACT Indicates no Tx Data activity TX TERR AIS Indicates that AIS has been detected in the Tx Data Stream DnI FRAME LOCK When running Drop Mode indicates that the framing unit is una...

Страница 142: ...is frame locked DnI M FRAME LOCK Indicates if drop insert data has multiframe lock INSERT CRC Indicates if the Circular Redundancy Check is passing in PCM 30C and PCM 31C Modes T1 E1 SIGNALING Indicates that the T1 E1 Signal is not locked IFEC LOCK Indicates that the Inner Codec is not locked OFEC LOCK Indicates that the Reed Solomon Decoder is not locked INTERLEAVER Indicates that the Reed Solomo...

Страница 143: ...issing or wrong file CODEC FPGA CFG Indicates Turbo Codec Card FPGA configuration failure probably caused by a missing or wrong file 1 5V RX SUPPLY Displays the measured voltage of the 1 5 Volt Rx power bus located inside the modem 1 5V TX SUPPLY Displays the measured voltage of the 1 5 Volt Tx power bus located inside the modem 3 3V SUPPLY Displays the measured voltage of the 3 3 Volt power bus l...

Страница 144: ...Transmit and Receive are completely independent 7 2 2 1 2 Minor Alarms Minor Alarms indicate that a problem may persist outside the modem such as loss of Terrestrial Clock loss of terrestrial data activity or a detected transmit or receive AIS condition Alarms are grouped into Transmit and Receive Alarms Transmit and Receive are completely independent 7 2 2 1 3 Common Equipment Faults Common equip...

Страница 145: ...B Over Time and Temperature Output Spectrum Meets IESS 308 309 310 Power Spectral Mask Spurious 60 dBc In Band 950 to 2050 MHz 45 dBc Out of Band On Off Power Ratio 60 dB Scrambler TT V 35 or IBS Others Optional FEC Viterbi K 7 at 1 2 3 4 and 7 8 2 3 Rate Trellis Radyne Turbo Optional BPSK 21 44 8PSK 16QAM 3 4 7 8 QPSK 1 2 3 4 7 8 Turbo Supported at all Modulation Types Outer Encoder Options Reed ...

Страница 146: ...on INTELSAT DVB Optional Descrambler CCITT V 35 or IBS Others Optional Acquisition Range Programmable 1 kHz to 255 kHz Sweep Delay Value 100 msec to 6000 sec in 100 msec Steps 8 4 Plesiochronous Buffer Size 0 msec to 64 msec Centering Automatic on Underflow Overflow Centering Modes IBS Integral Number of Frames IDR Integral Number of Multi Frames Clock Transmit Rx Recovered or SCT Internal 8 5 Mon...

Страница 147: ...Complies with IEEE 802 3 and IEEE 802 3u 8 10 Environmental Prime Power 100 to 240 VAC 50 to 60 Hz 250 Watts Maximum with 10 W BVC 48 VDC Optional Operating Temperature 40 to 50 C 95 Humidity Non Condensing Storage Temperature 50 to 60 C 99 humidity Non Condensing 8 11 Physical Size 10 W x 14 L x 4 5 T 25 4 x 35 6 x 11 45 cm Weight 15 Pounds 6 8 Kg Approximate modem only 8 12 OM20 Data Rate Limits...

Страница 148: ...K NONE 9600 20000000 OQPSK VIT 1 2 4800 10000000 OQPSK VIT 3 4 7200 15000000 OQPSK VIT 7 8 8400 17500000 OQPSK SEQ 1 2 4800 2048000 OQPSK SEQ 3 4 7200 2048000 OQPSK SEQ 7 8 8400 2048000 OQPSK TPC 1 2 4582 9545454 OQPSK TPC 3 4 7200 15000000 OQPSK TPC 7 8 8400 17500000 8PSK TRE 2 3 9600 20000000 8PSK TPC 3 4 10800 20000000 8PSK TPC 7 8 12600 20000000 8PSK TPC 495 9504 6312000 8PSK TPC 793 15225 631...

Страница 149: ...77777 QPSK VIT 7 8 7700 16041666 8PSK TRE 2 3 8800 18333333 8PSK TRE 5 6 11000 20000000 8PSK TRE 8 9 11734 20000000 16QAM TRE 3 4 13200 20000000 16QAM TRE 7 8 15400 20000000 188 Mode Modulation Code Rate Min Data Rate Max Data Rate BPSK VIT 1 2 2400 4607843 BPSK VIT 2 3 2950 6143790 BPSK VIT 3 4 3318 6911764 BPSK VIT 5 6 3687 7679738 BPSK VIT 7 8 3871 8063725 QPSK VIT 1 2 4424 9215686 QPSK VIT 2 3...

Страница 150: ...VIT 1 2 2400 5000000 BPSK VIT 2 3 3200 6666666 BPSK VIT 3 4 3600 7500000 BPSK VIT 5 6 4000 8333333 BPSK VIT 7 8 4200 8750000 QPSK VIT 1 2 4800 10000000 QPSK VIT 2 3 6400 13333333 QPSK VIT 3 4 7200 15000000 QPSK VIT 5 6 8000 16666666 QPSK VIT 7 8 8400 17500000 8PSK TRE 2 3 9600 20000000 8PSK TRE 5 6 12000 20000000 8PSK TRE 8 9 12800 20000000 16QAM TRE 3 4 14400 20000000 16QAM TRE 7 8 16800 20000000...

Страница 151: ... 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Viterbi Decoder Specification 1 2 Rate Specification 3 4 Rate Specification 7 8 Rate Typical Performance B O QPSK Uncoded Theory Note Eb No values include the effect of using Differential Decoding and V 35 descrambling Figure 8 1 OM20 B O QPSK BER Performance Viterbi ...

Страница 152: ...1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Sequential Decoder Specification 1 2 Rate Specification 3 4 Rate Specification 7 8 Rate Typical Performance B O QPSK Uncoded Theory Note Eb No values include the effect of using Differential Decoding and V 35 descrambling Figure 8 2 OM20 B O QPSK BER Performance Sequential ...

Страница 153: ... 9 1E 8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Viterbi Decoder Reed Solomon Specification 1 2 Rate Specification 3 4 Rate Typical Performance B O QPSK Uncoded Theory Note Eb No values include the effect of using Differential Decoding Figure 8 3 OM20 B O QPSK BER Performance Viterbi w R S ...

Страница 154: ...8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Trellis Decoder Specification 2 3 Rate Specification 2 3 Rate w RS Typical Performance 8PSK Uncoded Theory Note Eb No values include the effect of using Differential Decoding and V 35 Descrambling Figure 8 4 OM20 8PSK BER Performance Trellis ...

Страница 155: ...1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb No in dB BER Viterbi Decoder Specification 3 4 Rate Specification 7 8 Rate Typical Performance 16QAM Uncoded Theory Note Eb No values include the effect of using Differential Decoding and V 35 Descrambling Figure 8 5 OM20 16QAM BER Performance Viterbi ...

Страница 156: ...1E 8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb No in dB BER Viterbi Decoder Reed Solomon Specification 3 4 Rate w RS Specification 7 8 Rate w RS Typical Performance 16QAM Uncoded Theory Note Eb No values include the effect of using Differential Decoding Figure 8 6 OM20 16QAM BER Performance Viterbi w R S ...

Страница 157: ... Performance O QPSK Turbo 1E 9 1E 8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Turbo Decoder Specification Turbo 1 2 Specification Turbo 3 4 Typical Performance B O QPSK Uncoded Theory Specification Turbo 7 8 Figure 8 7 OM20 O QPSK BER Performance Turbo ...

Страница 158: ... 8 14 8 13 8 BER Performance 8PSK Turbo 1E 9 1E 8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb No in dB BER Turbo Decoder Specification Turbo 3 4 Typical Performance 8PSK Uncoded Theory Specification Turbo 7 8 Figure 8 8 OM20 8PSK BER Performance Turbo ...

Страница 159: ...8 13 9 BER Performance 16QAM Turbo 1E 9 1E 8 1E 7 1E 6 1E 5 1E 4 1E 3 1E 2 1E 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb No in dB BER Turbo Decoder Specification Turbo 3 4 Typical Performance 16QAM Uncoded Theory Specification Turbo 7 8 Figure 8 9 OM20 16QAM BER Performance Turbo ...

Страница 160: ...E 4 5 2 dB 5 7 dB 6 4 dB 4 7 dB 5 2 dB 5 9 dB 1E 5 5 6 dB 6 1 dB 6 9 dB 5 1 dB 5 6 dB 6 4 dB 1E 6 5 9 dB 6 5 dB 7 4 dB 5 4 dB 6 1 dB 6 9 dB 1E 7 6 3 dB 7 dB 7 9 dB 5 8 dB 6 5 dB 7 4 dB 1E 8 6 7 dB 7 4 dB 8 4 dB 6 2 dB 6 9 dB 7 9 dB 1E 9 7 1 dB 7 8 dB 8 9 dB 6 6 dB 7 4 dB 8 4 dB 1E 10 7 4 dB 8 3 dB 9 4 dB 6 9 dB 7 8 dB 8 9 dB BER Specification Typical Table 8 2 B O QPSK BER Performance Sequential 1...

Страница 161: ... 3 dB 8 1 dB 9 5 dB 1E 4 9 8 dB 11 1 dB 9 dB 10 3 dB 1E 5 10 7 dB 11 9 dB 9 9 dB 11 1 dB 1E 6 11 5 dB 12 7 dB 10 7 dB 11 9 dB 1E 7 12 4 dB 13 5 dB 11 6 dB 12 7 dB 1E 8 13 3 dB 14 3 dB 12 5 dB 13 5 dB 1E 9 14 2 dB 15 1 dB 13 4 dB 14 3 dB 1E 10 15 dB 15 9 dB 14 2 dB 15 1 dB Typical BER Specification Table 8 5 16QAM BER Performance Viterbi 3 4 Rate 7 8 Rate 3 4 Rate 7 8 Rate 1E 3 8 4 dB 9 8 dB 7 8 dB...

Страница 162: ...8 dB 7 2 dB 6 3 dB 6 8 dB Table 8 8 8PSK BER Performance Turbo BER Specification Typical Turbo 3 4Turbo 7 8Turbo 3 4Turbo 7 8 1E 3 6 3 dB 7 8 dB 6 dB 7 4 dB 1E 4 6 7 dB 7 9 dB 6 4 dB 7 5 dB 1E 5 7 dB 8 dB 6 7 dB 7 6 dB 1E 6 7 4 dB 8 1 dB 7 1 dB 7 7 dB 1E 7 7 8 dB 8 2 dB 7 5 dB 7 8 dB 1E 8 8 2 dB 8 3 dB 7 9 dB 7 9 dB Table 8 9 16QAM BER Performance Turbo BER Specification Typical Table 8 10 Open Ne...

Страница 163: ...M20 Universal Outdoor Modem Technical Specifications MN OM20 Revision 5 8 19 8 13 10 Input Level Refer to Figure 8 10 for the OM20 power threshold limits Figure 8 10 Demodulator Input Level Specification ...

Страница 164: ...OM20 Universal Outdoor Modem Technical Specifications MN OM20 Revision 5 8 20 Notes ...

Страница 165: ... factory and may require other options Factory upgrade only A 1 3 Internal High Stability The OM20 is equipped with a 5x10 8 or better Stability Frequency Reference Standard option A 1 4 DC Input Prime Power Allows for an optional DC Input Power Source Factory installed option A 1 5 Ethernet Data Interface The Ethernet interface is supported by an RJ 45 Auto Crossover Auto Sensing 10 100 Ethernet ...

Страница 166: ...omplished by means of firmware software modifications The following are examples of the types of customization available to the user Customized Data Rates Customized Scrambler Descramblers Customized Overhead Framing Structures Customized Modulation Formats Customized Uses for the ES ES Overhead Channel Contact Comtech EF Data Customer Serve or Sales Department at 480 333 4357 for all requests ...

Страница 167: ...or this procedure B 3 Upgrade Procedure The following paragraphs describe the procedure for permanently updating the feature set of the OM20 Universal Satellite Modem 1 The following steps allow users to quickly determine from the GUI Interface whether or not the desired feature s are supported by the hardware currently installed in the modem Using the GUI interface navigate to the Features menu u...

Страница 168: ... set upgrade code This code is only good on the modem for which it was ordered To enter this code from the terminal port perform the following a From the Enter Selection Number line type in 45 b Press Enter c Enter the new code and press Enter d Your system is now up graded If the code entered is correct the display will display CODE ACCEPTED otherwise the display will display INVALID CODE Care sh...

Страница 169: ... operator intervention may be required to restore the data paths In order to avoid this interruption in service the user can cancel the demonstration at any time by following the instructions outlined in the section on Canceling Demonstration Mode 1 The following steps allow users to quickly determine from the GUI Interface whether or not the desired feature s are supported by the hardware current...

Страница 170: ...CODE Care should be taken to insure that the demonstration code is entered properly After three unsuccessful attempts to enter a code the upgrade and demonstration capability will be locked out and it will be necessary to cycle power on the modem in order to continue B 5 Canceling Demonstration Mode At any time a demonstration may be canceled and have the modem return to its normal operation Once ...

Страница 171: ...olled through the browser based on the user access rights The goal is an easy to use navigation scheme that would enable users to view current modem status and easily access the modem s controls 1 From the modem introduction page click the MONITOR CONTROL tab 2 If not already logged on enter your username and password on the logon popup and then press the Enter key ...

Страница 172: ... describe feature status The following symbols indicate Installed No hardware available Requires hardware for upgrade Feature is in Demo Mode and will expire Key Code Required Call customer service Feature is enabled for customer use but the OM20 hardware required has not been detected or has failed Features upgrades can also be implemented through the Web Browser interface ...

Страница 173: ...ectrum transmitting even when the fault occurs The following Carrier Control states are available Carrier OFF Carrier ON Carrier AUTO Carrier VSAT Carrier RTS C 2 Carrier Off Modulator output is disabled C 3 Carrier On Modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel and the user is required to enter Yes to re enable...

Страница 174: ...pectrum and the user is required to manually turn on the output after the reprogramming same as Carrier On Additionally VSat mode disables the modulators output when the modems demodulator does not have signal lock When signal lock returns to the demodulator the modems modulator turns the carrier back on C 6 Carrier RTS Modulator output is turned off before reprogramming modulator functions that m...

Страница 175: ...2 Required Items Modem RJ45 to RJ45 cable Computer Default Plug J2 IMPORTANT The Web Browser menus for the OM20 can only be accessed utilizing Microsoft Internet Explorer 6 or greater D 3 Web Interface Setup Guidelines D 3 1 Preparing the OM 20 for Web Setup The unit is shipped from the factory with specific IP defaults The factory defaults are set to an unreachable state to minimize any adverse e...

Страница 176: ...rder for the computer to recognize the modem the computers subnet Mask must match the Subnet Mask of the modem The IP Address Mask is 255 255 255 000 To ensure the safety of the network it may be necessary to contact the network administrator 7 Turn on the unit The unit is now ready to connect to the computer Connect the RJ45 cable from the OM 20 to the computer router bridge as illustrated in Fig...

Страница 177: ... field then press the Enter key per Figure 2 Figure 2 Internet Browser Address 10 The Web Browser should be displayed on your computer screen The modem index page will be displayed per Figure 3 No special access is required General information on the modem features capabilities and available options are listed Complete technical specifications and product options are also available in a PDF format...

Страница 178: ... for additional information This concludes the initial set up that will allow the user full access to the modem In the event that the user needs to change the IP Addressing to support a different network then proceed to section 3 1 D 4 IP Network Change from the Initial Web Setup D 4 1 Configuring the modem This section is a continuation from the initial setup or can be used on an existing system ...

Страница 179: ...2 2 for Boot Mode descriptions NOTE NON VOL Stores and uses IP Mask and addresses as provided by the user 4 Click on the Cancel button at any time to abort and reload the current modem IP network settings Figure 5 Modem Addressing Screen D 4 2 Configuring the Computer This section is a continuation from the initial setup or can be used on an existing system that requires a network setup change The...

Страница 180: ...ptions We use authentication and authorization together with a user database and a Security Realm to design a secure site This makes use of users and groups where users are generally people that may access the system and groups represent the position that users can hold The web user database consists of three users with initial default names of guest oper and admin Access rights and authentication...

Страница 181: ...tings Access Screen ACCESS rights represent the following GUEST Users are able to navigate most of the site and view modem parameter settings OPER Users can monitor and control modem parameter settings and change their own authentication passwords ADMIN At this highest access right the users can monitor and control the modems parameters change any user s name and authentication password and modify...

Страница 182: ...on boot up the modem will restore the web setting to the standard IP Mask and addresses supplied by the modem The modem will be taken off the network and will not be accessible The Default settings are IP Address Mask 255 000 000 000 FF 00 00 00 hex Modem IP Address 010 000 000 001 C0 A8 00 EE hex Server IP Address 010 001 001 001 0A 01 01 01 hex Router IP Address 010 000 001 001 0A 00 01 01 hex B...

Страница 183: ...ted The two functions are completely independent allowing maximum flexibility in choosing configurations The Transmit Data Trunk is brought into the modem via the Drop Data In DDI SD Port J10 From there the TX Baseband Processor extracts the selected timeslots from the G 704 Frame and prepares them for transmission The Receive Data Trunk is looped internally to the OM20 by a connection between the...

Страница 184: ...rnally looped with the Terrestrial Data buffered inside the Modem In this mode the modulator should be disabled The RX Baseband Processor inserts satellite data into the selected timeslots in the looped G 704 Frame and the modified terrestrial data is then output via the Insert Data Out Port J11 refer to Figure 3 10 If framed terrestrial data is not available selection of the Internal T1 E1 frame ...

Страница 185: ...hem in timeslot 16 of the appropriate terrestrial frame This transmission and reception of ABCD signaling based upon the drop and insert timeslots is performed automatically and is transparent to the user In PCM 30 mode the user may not select timeslot 16 as a Drop or Insert Timeslot E 4 2 PCM 30C The PCM 30C Mode of Operation supports an E1 Interface with Multiframe Alignment MFAS and Channel Ass...

Страница 186: ...n 1 2 3 4 5 6 8 10 12 15 16 20 24 or 30 In the DMD20 Robbed Bit Signaling RBS is handled without any need for operator intervention and is transparent to the user E 4 6 T1 ESF T1 ESF S The T1 ESF Mode of Operation supports a T1 Interface with 24 frames per multiframe The CRC 6 checksum is automatically checked by the Drop Function and generated by the Insert Function and placed in the appropriate ...

Страница 187: ...ert Mapping The following displays under Interface D I Setup both Tx and Rx are editing displays only SATCh TS Enter to Edit Any changes made in these displays are made on the screen but are not entered into the modem Once these menus are configured the Mapping Menu must be used to actually enter the settings into the modem ...

Страница 188: ...Interface can be configured refer to Figure 3 13 Use these menus to set up the interface and then point and click the cursor on the channel time slot to be changed When finished changing the time slots press the Submit Map gel tab Repeat these steps for the Rx Interface configuration Assign the timeslots that are to be used to the 4 channels CH1 is assigned to TS1 Timeslot 1 CH2 to TS 2 CH3 to TS3...

Страница 189: ... selection process Trying to select a T1 type Drop Mode such as T1 ESF with the mod data rate set to 1920000 bps a valid E1 D I rate but not a valid T1 rate will result in the error message INVALID DROP MODE and the selection will not be allowed Trying to select a T1 type Insert Mode such as T1 D4 with the demod data rate set to 1920000 bps will result in the error message INVALID INSERT MODE and ...

Страница 190: ... the D I specific menus will automatically disappear E 7 3 Terrestrial Framing Drop Mode Insert Mode The Drop Mode Selection and the Insert Mode Selection identify the Terrestrial Data Framing Format As previously mentioned their selection is influenced by the Modulator and Demodulator Data Rates and trying to select a T1 Type Framing Format with a data rate of 1920000 bps will result in an error ...

Страница 191: ... the error message INVALID BUFFER CLOCK and the selection will not be allowed When the Insert Terrestrial Frame Source selection is set to Internal the operator needs to specify how data should be clocked out of the Doppler Buffer In this case the operator will be able to select SCTE SCT RX SAT or EXT EXC as the source for the Buffer Clock Therefore the Insert Terrestrial Frame Source selection sh...

Страница 192: ... desired depth Under Rx D I Set Insert Mode T1 D4 Set T1 E1 Frm Src External Use SATCh TS edit capability to define proper mapping of Satellite Channels to insert Terrestrial Slots Use Map Copy to copy Rx Edit to Rx Active Under Demodulator Under Demod IF Set Frequency to desired value Example 2 Multidestinational Remote Site Programming Drop 512 Kbps from a T1 trunk 3 4 Rate Viterbi Extract 512 K...

Страница 193: ...Under RX Setup Set Buff Size to desired depth Under Rx D I Set Insert Mode T1 D4 Set T1 E1 Frm Src External Use SATCh TS edit capability to define proper mapping of Satellite Channels to insert Terrestrial Slots For Satellite Channels that are not to be inserted enter NI No Insert for the Terrestrial Slot Use Map Copy to copy Rx Edit to Rx Active Under Demodulator Under Demod IF Set Frequency to d...

Страница 194: ...ure Maps that are created are stored in non volatile memory within the modem and remain unchanged after a power down Table E 1 D I Multiplexer Map Locations Used Data Rate Kbps Map Locations Used n 1 2 4 8 16 24 30 64 1 128 1 2 256 1 4 384 1 6 512 1 8 768 1 12 1024 1 16 1536 1 24 1920 1 30 It is important to understand that each map contains up to 30 usable entries In many cases a smaller number o...

Страница 195: ...D I Multiplexer Operation These are the Tx transmit Active Map for Drop Mapping and the Rx receive Active Map for Insert Mapping Each map entry consists of an IBS Time Slot assignment and the Terrestrial T1 or E1 Channel Number to which it is assigned Drop Mapping and Insert Mapping are completely separate and independent The map that is actually used for the Drop Function is the Tx Active Map the...

Страница 196: ...ert Multiplexer would know to look only at the first two entries in the Active Receive table and would ignore the other 28 entries If the first two entries were modified to contain a 27 and 28 the data would be inserted into the 27th and 28th time slots of the E1 frame ROM Map 3 could be used as the template for an Active Transmit Drop Map with a modulator and or demodulator configured for 256 Kbp...

Страница 197: ...Drop and or Active Receive Insert Map with a modulator and or demodulator configured for 1920 Kbps operation This would be used with E1 frames where time slot 16 is not used for the multiframe alignment signal and therefore channels 1 through 30 are mapped directly with time slots 1 through 30 ROM Map 7 could also be used as the template for an Active Transmit Drop and or Active Receive Insert Map...

Страница 198: ...OM20 Universal Outdoor Modem Appendix E MN OM20 Revision 5 E 16 Notes ...

Страница 199: ...s not have the required hardware and or feature set enabled you will need to contact your Radyne salesperson to order the appropriate hardware and or feature set upgrade If your modem has the appropriate hardware but the software revision is prior to AY you will need to download the latest modem firmware from the Radyne FTP website The following menus illustrate how to determine whether or not you...

Страница 200: ... to the appropriate section of the User s manual The following menu selections are utilized for controlling the additional functionality available with efficient Drop and Insert MODULATOR or DEMODULATOR NETWORK SPEC CLOSED NET Efficient Drop Insert is a Closed Network selection SAT FRAMING EFFICIENT D I The satellite frame type is Efficient Drop Insert DATA DATA RATE bps N x 64000 The data rate ca...

Страница 201: ...ient D I Rate as well as the two cases that alter the basic rate F 3 2 Calculating the Basic Efficient D I Rate When E1 signaling is not required all T1 and PCM31 cases and Enhanced Async is not enabled the Earth Station to Earth station link is the standard ES ES the Efficient D I Rate for N timeslots is as follows Efficient D I Rate Data Rate N 250 bps In other words the basic Efficient Drop Ins...

Страница 202: ... and Examples The following examples further illustrate how to calculate the Efficient D I rate which can be summarized for N timeslots as Efficient D I Rate Data Rate N 250 bps With E1 signaling add N 2000 bps With Enhanced Async add Truncation In Band Baud N 125 N 125 bps Example 1a 5 Drop Slots with T1 D4 framing standard ES to ES overhead For 5 Drop Slots the Data Rate would be 5 64000 or 3200...

Страница 203: ...cient D I Rate would be 640000 10 250 bps 642500 bps The Open Network rate is over 40 000 bps higher at 682667 bps Example 2b Change to E1 PCM30 framing E1 Signaling standard ES to ES overhead Add 10 2000 bps to our previous calculation gives 662500 bps Still saving over 20 000 bps compared to the open network standard Example 2c Change to Enhanced Async with In Band Baud Rate of 1200 X Truncation...

Страница 204: ...OM20 Universal Outdoor Modem Appendix F MN OM20 Revision 5 F 6 Notes ...

Страница 205: ...tomatically configured to the parameters shown below in the highlighted row Strap Code 16 Use the Strap Code Guide Table G 1 for available strap codes Table G 1 Strap Codes Dis Disable Strap Code Decimal Data Rate Kbps Overhead Code Rate Type Framing Type Scrambler Type Drop and Insert Reed Solomon Modulation Mode 1 64 16 15 1 2 VIT IBS IBS Dis Dis QPSK IBS 2 128 16 15 1 2 VIT IBS IBS Dis Dis QPSK...

Страница 206: ...E V 35 IESS Dis Dis QPSK CNT 129 512 1 1 2 VIT NONE V 35 IESS Dis Dis QPSK CNT 130 512 1 3 4 VIT NONE V 35 IESS Dis Dis QPSK CNT 132 768 1 1 2 VIT NONE V 35 IESS Dis Dis QPSK CNT 136 768 1 3 4 VIT NONE V 35 IESS Dis Dis QPSK CNT 144 896 1 1 2 VIT NONE V 35 IESS Dis Dis QPSK CNT 44 896 1 3 4 VIT NONE V 35 IESS Dis Dis QPSK CNT 7 1344 1 1 2 VIT NONE V 35 IESS Dis Dis QPSK CNT 11 1344 1 3 4 VIT NONE ...

Страница 207: ...T 145 384 16 15 3 4 VIT IBS IBS Dis Dis QPSK IBS 100 448 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 146 448 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 104 576 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 148 576 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 152 640 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 161 640 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 162 704 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 164 704 16 15 3 4 VIT ...

Страница 208: ... IBS IBS Dis Dis QPSK CNT 86 1664 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 89 1728 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 90 1728 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 92 1792 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 99 1792 16 15 3 4 VIT IBS IBS Dis Dis QPSK CNT 101 2048 16 15 3 4 VIT IBS IBS Dis Dis QPSK IBS 102 1856 16 15 1 2 VIT IBS IBS Dis Dis QPSK CNT 105 1856 16 15 3 4 VIT IBS IBS Dis Dis QPSK...

Страница 209: ...4 Mbps or Below 1 2 3 4 7 8 Rate FEC IBS 2 048 Mbps or below 1 2 3 4 7 8 Rate Closed Network 8 448 96 Kb Framing or No Framing 3 4 7 8 Rate FEC 6 312 96 Kb Framing or No Framing 1 2 3 4 7 8 Rate FEC 2 048 96 Kb Framing or 1 15 Framing or No Framing 1 2 3 4 7 8 Rate FEC 1 544 96 Kb Framing or 1 15 Framing or No Framing 1 2 3 4 7 8 Rate FEC Any Rate 2 048 lower 1 15 Framing or No Framing 1 2 3 4 7 8...

Страница 210: ... IF ON Method 2 Under Interface Menu Set Interface type Set Tx clock selection Set Mod strap code to 128 Under Mod IF Menu Set desired Tx frequency and power level Turn IF on Demodulator Method 1 Under Interface Menu Set Interface type Set Buff clock selection Set Buffer Size Set mode to IDR Under Demod IF Menu Set desired Rx frequency Under Demod data Menu Set code rate to 3 4 VIT Set data rate f...

Страница 211: ...Interface type Set Tx clock selection Set Mod strap code to 120 Under Mod IF Menu Set desired Tx frequency and power level Turn IF on Demodulator Method 1 Under Interface Menu Set Interface type Set Buff clock selection Set Buffer Size Set Framing to 1 15 Set mode to IBS Under Demod IF Menu Set desired Rx frequency Under Demod Data Menu Set code rate to 3 4 VIT Set data rate for 1544000 Under Inte...

Страница 212: ...urn IF ON Method 2 Under Interface Menu Set Interface type Set Tx clock selection Set Mod strap code to 101 Under Mod IF Menu Set desired Tx frequency and power level Turn IF on Demodulator Method 1 Under Interface Menu Set Interface type Set Buff clock selection Set Buffer Size Set mode to Closed Net Under Demod IF Menu Set desired Rx frequency Under Demod data Menu Set code rate to 3 4 VIT Set F...

Страница 213: ...Timing Example Method 1 Under Interface Menu Under Tx Setup Menu Set INTF to RS 422 Set SCT Source to SCR Set Tx Clock to SCTE Set mode to IBS Method 2 Under Interface Menu Under Tx Setup Menu Set INTF to RS 422 Set SCT Source to SCR Set Tx Clock to SCTE Set mode to Closed Net ...

Страница 214: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 G 10 Notes ...

Страница 215: ... be set to operate on either or both directions of a link but always require a bi directional channel Enabling AUPC on one side of the link will activate AUPC on the distant end of the link It is necessary that both the Modulator and Demodulator be set to the appropriate framing for AUPC options to be editable and for the AUPC function to operate properly Examples of the basic Radyne AUPC Operatio...

Страница 216: ...unctions could be occurring in both directions simultaneously The local modem is transmitting to modem at a remote locale under normal conditions The remote modem has a receive Eb No of 7 5 dB The local modem has been set with a Target Eb No of 7 5 dB and has a current power output of 30 dBm It begins to rain at the local site and the Eb No drops to 7 0 then 6 8 dB The local modem is constantly se...

Страница 217: ...O 45 dB Sets maximum output power to be TARGET Eb No 4 0 TO 16 dB Desired Eb N0 of remote modem TRACKING RATE 6 0 to 0 5 dB MIN Adjustable in 5dB increments LOCAL CL ACTION HOLD MAXIMUM NOMINAL Allows user to determine what power setting the remote modem will use in the event of a carrier loss at the local side REMOTE CL ACTION HOLD MAXIMUM NOMINAL This setting allows users to determine what local...

Страница 218: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 H 4 Notes ...

Страница 219: ...03 1 760 x 103 1 609 x 103 1 609 1 mm 0 03937 1 kilometer 0 621 Temperature Conversions Units of Weight Unit Gram Ounce Avoirdupois Ounce Troy Pound Avoirdupois Pound Troy Kilogram 1 gram 0 03527 0 03215 0 002205 0 002679 0 001 1 oz avoir 28 35 0 9115 0 0625 0 07595 0 02835 1 oz troy 31 10 1 097 0 06857 0 08333 0 03110 1 lb avoir 453 6 16 0 14 58 1 215 0 4536 1 lb Troy 373 2 13 17 12 0 0 8229 0 37...

Страница 220: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX ...

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